CN117643793B - Dust removal denitrification facility - Google Patents
Dust removal denitrification facility Download PDFInfo
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- CN117643793B CN117643793B CN202311274855.9A CN202311274855A CN117643793B CN 117643793 B CN117643793 B CN 117643793B CN 202311274855 A CN202311274855 A CN 202311274855A CN 117643793 B CN117643793 B CN 117643793B
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- fixedly connected
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- dust removal
- subassembly
- plate
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- 239000000428 dust Substances 0.000 title claims abstract description 113
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 123
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 238000002347 injection Methods 0.000 claims abstract description 24
- 239000007924 injection Substances 0.000 claims abstract description 24
- 230000005284 excitation Effects 0.000 claims abstract description 23
- 230000003197 catalytic effect Effects 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000009827 uniform distribution Methods 0.000 claims abstract description 10
- 239000012212 insulator Substances 0.000 claims description 22
- 239000000779 smoke Substances 0.000 claims description 15
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 8
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 8
- 241001330002 Bambuseae Species 0.000 claims description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 8
- 239000011425 bamboo Substances 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 41
- 239000003546 flue gas Substances 0.000 abstract description 41
- 239000003054 catalyst Substances 0.000 abstract description 15
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 230000000295 complement effect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000005684 electric field Effects 0.000 description 14
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 230000009471 action Effects 0.000 description 11
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/30—Controlling by gas-analysis apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8696—Controlling the catalytic process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a dust removal and denitration device, which relates to the technical field of environmental protection and comprises a flue, wherein the left end of the flue is fixedly connected with a data detection assembly, the left end of the flue is fixedly connected with an ammonia injection assembly, the right end of the flue is fixedly connected with a steel structure assembly, the left side of the steel structure assembly is provided with an inlet air flow uniform distribution assembly, the middle part of the steel structure assembly is fixedly connected with a dust collection electrode, the middle part of the steel structure assembly is fixedly connected with a discharge electrode, the discharge electrode is fixedly connected with a dust removal power supply body, the right side of the steel structure assembly is fixedly connected with a catalytic electrode, the right side of the steel structure assembly is fixedly connected with an excitation electrode, the excitation electrode is fixedly connected with a denitration and dedusting power supply, and the excitation electrode is fixedly connected with a compressed air assembly. By adopting plasma jet catalytic denitration, the catalyst and the plasma jet complement each other, so that the reaction rate and the reaction efficiency of the whole assembly are improved; the form and arrangement of the catalytic electrode are beneficial to removing pollutants in the flue gas, are not easy to block and are also beneficial to ash removal.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a dust removal and denitration device.
Background
The glass kiln can produce particulate matters, NOx, SO2, halide and other atmospheric pollutants in the production process. The dust content in the flue gas is low but the flue gas has certain viscosity, the concentration is generally not more than 800mg/m < 3 >, the NOx is mainly thermal nitrogen, and the concentration is generally more than 2000mg/m < 3 >. And during the fire change process, the concentration of pollutants can be fluctuated severely.
At present, the main flow dedusting and denitration process of the glass kiln is two processes of high-temperature electric dedusting and SCR, and metal filter bags/ceramic filter cartridges and SCR. When the two processes are used for treatment, the flue gas changes greatly, the flue gas temperature cannot be stabilized at the optimal use temperature of SCR, the catalyst activity is unstable, the NOx emission exceeds standard, and ammonia escape is easy to cause; the metal filter bag/ceramic filter cartridge has high running resistance and high running cost; the dust has viscosity, and the metal filter bag or the ceramic filter cylinder is adopted, so that the spraying difficulty is high, and the blockage is easy to cause.
Disclosure of Invention
In order to solve the technical problems, the technical scheme provides a dust removal and denitration device, which solves the problems in the background technology.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The utility model provides a dust removal denitrification facility, includes the flue, flue left end fixedly connected with data detection subassembly, flue left end fixedly connected with annotates the ammonia subassembly, flue right-hand member fixedly connected with steel structure subassembly, inlet air flow equipartition subassembly is installed in steel structure subassembly left side, steel structure subassembly middle part fixedly connected with dust collecting electrode, steel structure subassembly middle part fixedly connected with discharge electrode, discharge electrode fixedly connected with power body for dust removal, steel structure subassembly right side fixedly connected with catalytic electrode, steel structure subassembly right side fixedly connected with excitation electrode, excitation electrode fixedly connected with power for denitrification and dust removal, excitation electrode fixedly connected with compressed air subassembly, steel structure subassembly right side fixedly connected with export air flow equipartition subassembly;
the dust collection pole (4) comprises a dust pole plate (402), at least one curved line (401) is fixedly connected to the front surface of the dust pole plate (402), and windproof ditch plates (403) are fixedly connected to two sides of the dust pole plate (402);
The discharging electrode (5) comprises an electrode plate (504), the top of the electrode plate (504) is fixedly connected with an inserting plate (502), at least one inserting opening (503) is formed in the top of the inserting plate (502), a wiring plug (501) is inserted into the inserting opening (503), and at least one electrode head (505) is fixedly connected to the front face of the electrode plate (504).
The power supply body (6) for dust removal comprises a primary cabinet I (601), wherein the right end of the primary cabinet I (601) is fixedly connected with a transformer I (602), and the right end of the transformer I (602) is fixedly connected with an output insulator I (603);
The power supply (9) for denitration and dust removal comprises a tail junction box (906) and a second transformer (903), wherein an absorption insulator (905) is fixedly connected to the bottom of the tail junction box (906), denitration and dust removal equipment (14) is arranged between the tail junction box (906) and the second transformer (903), an output insulator (904) is fixedly connected to the bottom of the second transformer (903), a charger (902) is fixedly connected to the top of the second transformer (903), and a second primary cabinet (901) is fixedly connected to the right end of the second transformer (903);
Annotate ammonia subassembly (10) including fixed plate (1005), fixed plate (1005) upper surface left side fixedly connected with bracing piece (1009), bracing piece (1009) top fixedly connected with crossbeam (1001), crossbeam (1001) front end fixedly connected with annotates ammonia cylinder (1002), annotate the output fixedly connected with ripple section of thick bamboo (1003) of ammonia cylinder (1002), ripple section of thick bamboo (1003) fixedly connected with annotates ammonia mouth (1004) in fixed plate (1005) upper surface left side, fixed plate (1005) bottom fixedly connected with annotates ammonia mouth (1004), annotate ammonia mouth (1004) and ripple section of thick bamboo (1003) are linked together, ripple section of thick bamboo (1003) right side fixedly connected with communicating pipe (1006), communicating pipe (1006) mid-mounting has solenoid valve (1008), fixed plate (1005) upper surface right side fixedly connected with storage tank (1007), storage tank (1007) and communicating pipe (1006) fixedly connected with.
Preferably, the steel structure component comprises a shell, the left end of the shell is fixedly connected with an air inlet bell mouth, the inlet air flow uniform distribution component is arranged in the air inlet bell mouth, the air inlet bell mouth is fixedly connected with a flue, the bottom of the shell is fixedly connected with two ash hoppers, the right end of the shell is fixedly connected with an air outlet bell mouth, the outlet air flow uniform distribution component is fixedly connected in the air outlet bell mouth, and at least one smoke blocking and guiding component is fixedly connected in the shell.
Preferably, the inlet air flow uniformly-distributed component comprises a uniform plate, at least one uniform hole is formed in the surface of the uniform plate in a penetrating manner, the aperture of the uniform hole is gradually increased from inside to outside, the upper surface of the uniform plate is fixedly connected with a main semi-spherical shell, the top of the main semi-spherical shell is fixedly connected with a main circular ring, the upper surface of the uniform plate is fixedly connected with at least one auxiliary semi-circular shell, the top of the auxiliary semi-circular shell is fixedly connected with an auxiliary circular ring, the main semi-spherical shell and a plurality of auxiliary semi-circular shells are concentrically arranged, and the radius of the auxiliary semi-circular shells is increased at equal intervals.
Preferably, the data detection assembly, the ammonia injection assembly, the power body for dust removal, the power source for denitration and dust removal and the compressed air assembly are all in control connection with a centralized control center.
Compared with the prior art, the invention has the beneficial effects that:
By arranging the inlet airflow uniformly-distributing components, the flue gas is uniformly distributed, plasma jet catalytic denitration is adopted, and the catalyst and the plasma jet complement each other, so that the reaction rate and the reaction efficiency of the whole component are improved; the form and arrangement of the catalytic electrode are beneficial to removing pollutants in the flue gas, are not easy to block, and are also beneficial to ash removal; the arrangement form of the catalytic electrode and the excitation electrode can exert the maximum effect of the plasma jet, and activate, modify and regenerate the catalyst in a larger area; the power supply for denitration and dust removal is arranged in a split mode; the ammonia injection amount and the power supply operation parameters for dust removal are controlled by using the inlet flue gas parameters, so that the reaction is quicker, and the addition amount is more accurate; controlling the operation parameters of a power supply for denitration and dust removal by using the parameters of the outlet flue gas, and ensuring that the emission reaches the standard; the ammonia injection amount is controlled by using the NH3 data of the outlet in an interlocking way, so that ammonia escape is prevented from exceeding the standard; by adopting the control mode, the operation of the assembly is more reasonable under the condition of ensuring the standard, and the operation cost is saved; the service life of the catalyst is longer under the action of the plasma jet; the ammonia is added to realize tempering of the flue gas and improve the dust removal efficiency of the flue gas; the plasma jet catalytic denitration is adopted, so that the catalyst usage amount is greatly reduced, and the running resistance is low; the power supply for denitration and dust removal is arranged in a split mode, so that energy transmission and use are facilitated; the power supply for denitration and dust removal adopts a bottom outlet mode, so that the energy transmission distance is effectively shortened, the pulse width is reduced, and the transmission efficiency is improved; higher nitrogen oxides react with NH3 more easily and more rapidly than NO with the catalyst.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a steel structure assembly according to the present invention;
FIG. 3 is a schematic view of the structure of the power source for dust removal of the present invention;
FIG. 4 is a schematic cross-sectional view of a catalytic electrode according to the present invention;
FIG. 5 is a schematic diagram of the power supply structure for denitration and dust removal of the present invention;
FIG. 6 is a schematic diagram of the installation of the power supply for denitration and dust removal of the present invention;
FIG. 7 is a schematic diagram of the catalytic electrode and excitation electrode mounting arrangement of the present invention;
FIG. 8 is a schematic diagram of an inlet flow distribution assembly of the present invention;
FIG. 9 is a schematic view of the internal structure of the inlet air flow distribution assembly of the present invention;
FIG. 10 is a schematic diagram of an ammonia injection assembly according to the present invention;
FIG. 11 is a schematic view of the dust collector of the present invention;
FIG. 12 is a schematic view of the structure of the discharge electrode of the present invention.
The reference numerals in the figures are:
1. a steel structure component; 101. an air inlet horn mouth; 102. a housing; 103. a gas outlet bell mouth; 104. an ash bucket; 105. a smoke blocking and guiding component; 2. an inlet airflow uniform distribution assembly; 201. a secondary ring; 202. an auxiliary semicircular shell; 203. a uniformity plate; 204. a main ring; 205. a main hemispherical shell; 206. a uniform hole; 3. the outlet airflow uniform distribution assembly; 4. a dust collecting electrode; 401. curved lines; 402. a dust plate; 403. a windbreak ditch plate; 5. a discharge electrode; 501. a wiring plug; 502. inserting plate; 503. a socket; 504. an electrode plate; 505. an electrode head; 6. a dust-removing power source; 601. a primary cabinet I; 602. a first transformer; 603. outputting an insulator I; 7. a catalytic electrode; 8. an excitation electrode; 9. a power supply for denitration and dust removal; 901. a first cabinet II; 902. a charger; 903. a second transformer; 904. outputting a second insulator; 905. an absorption insulator; 906. a tail box; 10. an ammonia injection assembly; 1001. a cross beam; 1002. an ammonia injection cylinder; 1003. a corrugated tube; 1004. an ammonia injection nozzle; 1005. a fixing plate; 1006. a communicating pipe; 1007. a storage tank; 1008. an electromagnetic valve; 1009. a support rod; 11. a compressed air assembly; 12. a data detection component; 13. a centralized control center; 14. denitration dust removal equipment; 15. and (5) a flue.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
Referring to fig. 1-12, a dust removal and denitration device comprises a flue 15, the left end fixedly connected with data detection subassembly 12 of flue 15, flue 15 left end fixedly connected with annotates ammonia subassembly 10, flue 15 right-hand member fixedly connected with steel constructs subassembly 1, inlet air flow equipartition subassembly 2 is installed in steel constructs subassembly 1 left side, steel constructs subassembly 1 middle part fixedly connected with utmost point 4 that gathers dust, steel constructs subassembly 1 middle part fixedly connected with discharge electrode 5, discharge electrode 5 fixedly connected with power source 6 for dust removal, steel constructs subassembly 1 right side fixedly connected with catalytic electrode 7, steel constructs subassembly 1 right side fixedly connected with excitation electrode 8, excitation electrode 8 fixedly connected with denitration power source 9, excitation electrode 8 fixedly connected with compressed air subassembly 11, steel constructs subassembly 1 right side fixedly connected with export air flow equipartition subassembly 3.
Referring to fig. 1 and 2, the steel structure assembly 1 comprises a shell 102, wherein the left end of the shell 102 is fixedly connected with an air inlet bell mouth 101, an inlet air flow uniform distribution assembly 2 is installed in the air inlet bell mouth 101, the air inlet bell mouth 101 is fixedly connected with a flue 15, the bottom of the shell 102 is fixedly connected with two ash hoppers 104, the right end of the shell 102 is fixedly connected with an air outlet bell mouth 103, an outlet air flow uniform distribution assembly 3 is fixedly connected in the air outlet bell mouth 103, and at least one flue gas blocking and guiding assembly 105 is fixedly connected in the shell 102;
The air inlet horn mouth 101 is in a flaring structure, a small mouth of the horn mouth is connected with the flue 15, and a large mouth of the horn mouth is connected with the shell 102, so that the flow rate of smoke can be effectively reduced, and the smoke can be uniformly diffused to the whole section of the assembly; the shell 102 adopts a structure of a steel section combined reinforced steel plate and is respectively connected with the air inlet bell mouth 101, the air outlet bell mouth 103 and the ash bucket 104. The air outlet horn mouth 103 is of a necking structure, a small mouth of the horn mouth is connected with the flue 15, and a large mouth of the horn mouth is connected with the shell 102 to serve as a transition between the assembly and the flue 15; the upper part of the ash bucket 104 is connected with the shell 102 and is used for collecting and storing dust; the smoke blocking and guiding assembly 105 consists of a supporting beam and a steel plate, and is used for blocking and guiding smoke and avoiding the escape of the smoke from a working blind area.
Referring to fig. 1, 8 and 9, the inlet airflow uniformly-distributing assembly 2 includes a uniform plate 203, at least one uniform hole 206 is formed on the surface of the uniform plate 203 in a penetrating manner, the hole diameter of the uniform hole 206 is gradually increased from inside to outside, a main semi-spherical shell 205 is fixedly connected to the upper surface of the uniform plate 203, a main circular ring 204 is fixedly connected to the top of the main semi-spherical shell 205, at least one auxiliary semi-spherical shell 202 is fixedly connected to the upper surface of the uniform plate 203, an auxiliary circular ring 201 is fixedly connected to the top of the auxiliary semi-spherical shell 202, the main semi-spherical shell 205 and a plurality of auxiliary semi-spherical shells 202 are concentrically arranged, and the radius of the auxiliary semi-spherical shells 202 is increased at equal intervals.
When the flue gas enters the main ring 204 and the auxiliary ring 201 and is dispersed by the main hemispherical shell 205 and the auxiliary hemispherical shell 202 and is dispersed into the uniform holes 206, the flue gas can be dispersed, but because the flue gas has different rates of passing through the uniform holes 206, the aperture of the uniform holes 206 needs to be adjusted according to the flue gas rate, the auxiliary ring 201 is smaller, the flue gas difference entering the auxiliary ring 201 is ensured to be negligible, but the flue gas enters the main hemispherical shell 205 and the auxiliary hemispherical shell 202, the flue gas is dispersed, the density of the flue gas is reduced as the flue gas more outside is dispersed, and the quantity of the uniform holes 206 arranged between the adjacent auxiliary hemispherical shells 202 is consistent, so that the aperture of the uniform holes 206 needs to be gradually increased from inside to outside in order to ensure that the passing flue gas components are consistent.
Referring to fig. 1, the outlet air flow uniformly-distributing assembly 3 has various forms such as a pore plate, a trough plate, a V-shaped plate and the like, and is reasonably selected according to different needs, and the function of the outlet air flow uniformly-distributing assembly is to enable the flue gas flow to uniformly flow in the electric field through local blocking.
Referring to fig. 1 and 11, the dust collecting electrode 4 comprises a dust electrode plate 402, at least one curved line 401 is fixedly connected to the front surface of the dust electrode plate 402, and windproof ditch plates 403 are fixedly connected to two sides of the dust electrode plate 402;
The dust collecting electrode 4 is of a plate structure, is formed by rolling a plate, presents an insoluble grain in the middle, is folded into windproof grooves on two sides, is arranged in the shell 102 and is communicated with a ground net.
Referring to fig. 1 and 12, the discharge electrode 5 includes an electrode plate 504, a plugboard 502 is fixedly connected to the top of the electrode plate 504, at least one jack 503 is formed on the top of the plugboard 502, a wiring plug 501 is inserted into the jack 503, and at least one electrode head 505 is fixedly connected to the front of the electrode plate 504;
The discharge electrode 5 is of a frame structure, the discharge wire is connected to the corresponding wiring plug 501, different wire types are selected according to the difference of the smoke property, and the discharge wire mainly comprises RSB barbed wires, spiral wires, fishbone needle wires and the like, is suspended in the shell 102 through an insulating support piece, and is connected with the dust removal power supply body 6 through a wall bushing.
The dust collecting electrode 4 and the discharge electrode 5 form a dust collecting high-voltage electric field together, wherein the dust collecting electrode 4 is a grounding electrode and is arranged in parallel along the flue gas flow direction, when the dust collecting power supply body 6 transmits energy to the discharge electrode 5, the dust collecting high-voltage electric field is established, ionized gas generates a large amount of free electrons and positive and negative ions, when the dust-containing flue gas passes through the high-voltage electric field, the positive and negative ions between the two electrodes collide with the electrons or charge in ion diffusion movement, dust with the electrons and ions moves to the heteropolarity electrode under the action of electric field force and is adsorbed on the heteropolarity electrode, and the dust on the electrode falls into the dust hopper 104 to be collected in a vibration mode and the like.
Referring to fig. 1 and 3, the dust removing power supply body 6 includes a first primary cabinet 601, a first transformer 602 is fixedly connected to the right end of the first primary cabinet 601, and an output insulator 603 is fixedly connected to the right end of the first transformer 602;
The dust removing power supply body 6 adopts a negative high-voltage power supply, as shown in fig. 3, and mainly comprises a primary cabinet 601, a transformer 602 and an output insulator 603, wherein the dust removing power supply body 6 is connected with a wall bushing through the output insulator 603, 380V alternating current is boosted through the transformer 602 after being filtered and rectified in the primary cabinet 601, and finally energy is transmitted to the discharge electrode 5 through the output insulator 603. The dust removing power source body 6 is usually a power frequency power source, a high frequency superposition pulse power source combination mode or a pulse integrated machine.
Referring to fig. 4, the catalytic electrode 7 is formed by arranging and combining a plurality of layers of corrugated catalyst electrodes, and the single-layer catalyst electrode is manufactured by taking a multi-layer pressed silk screen as a support, taking TiO2 as a carrier and taking V2O5 as a main active component. The main function is to adsorb NH3 in the flue gas to form NH4+ cremation complex, and react with NO in the flue gas to generate N2 and H2O, and the catalytic electrode 7 is fixed inside the shell 102 and communicated with the ground network.
Referring to fig. 1, the excitation electrode 8 is formed by assembling hollow round tubes, hollow needling tubes are installed on two sides of a vertical tube, the bottom of the vertical tube is connected with the compressed air assembly 11, and is suspended in the shell 102 through an insulating support piece and is connected with the power supply 9 for denitration and dust removal through a wall bushing.
The catalytic electrode 7 and the excitation electrode 8 together form a high-energy electron electric field, the high-energy electron electric field is correspondingly arranged in a mode shown in fig. 7, the needle tip faces to the gap of the catalytic electrode 7, when the power supply 9 for denitration and dust removal transmits energy to the excitation electrode 8, the high-energy electron electric field is established, and dust is further collected under the action of the high-energy electron electric field, particularly on the front-stage catalytic electrode 7. The strong corona can form plasma jet flow between the two poles, neutral molecules are excited into free radicals, such as H2O is excited into H and OH, O2 is excited into O, the free radicals react with NO to generate high-valence nitrogen oxides, part of the high-valence nitrogen oxides react to generate HNO3, and under the action of a catalyst, the high-valence nitrogen oxides rapidly react with NH3 in an oxidation-reduction way to generate N2 and H2O; the catalyst can be activated, modified and regenerated under the action of the plasma jet, so that the activity of the catalyst is improved, the reaction efficiency is improved, and in addition, the catalyst can effectively promote the generation of plasma and is easier to form the plasma jet.
Referring to fig. 1,5 and 6, the power supply 9 for denitration and dust removal comprises a tail box 906 and a second transformer 903, wherein an absorption insulator 905 is fixedly connected to the bottom of the tail box 906, a denitration and dust removal device 14 is arranged between the tail box 906 and the second transformer 903, an output insulator 904 is fixedly connected to the bottom of the second transformer 903, a charger 902 is fixedly connected to the top of the second transformer 903, and a second primary cabinet 901 is fixedly connected to the right end of the second transformer 903;
As shown in fig. 5, the power supply 9 for denitration and dust removal mainly comprises a second primary cabinet 901, a charger 902, a second transformer 903, a second output insulator 904, an absorption insulator 905 and a tail end box 906, wherein the second output insulator 904 and the absorption insulator 905 adopt a bottom-out form. As shown in fig. 6, the tail box 906 is diagonally mounted with other components, the transformer two 903 and the junction tail box 906 are respectively connected with the wall bushing through the output insulator two 904 and the absorption insulator 905, the 380V alternating current is filtered and rectified in the primary cabinet two 901, the voltage is raised to 2000V through the charger 902, then the 2000V voltage is transmitted back into the transformer two 903 through the thyristor or the IGBT switch in the primary cabinet two 901, the high-voltage pulse waveform is formed after the pulse in the transformer two 903 is deformed, the narrow pulse waveform is formed through the grading magnetic compression switch, and finally the energy is transmitted to the excitation electrode 8 through the output insulator two 904, so that the main technical parameters of the power supply 9 for denitration and dust removal are as follows: the pulse front is less than or equal to 300ns, the pulse width is less than or equal to 600ns, the voltage is 80kV, and the maximum frequency is 1000Hz.
Referring to fig. 1 and 10, the ammonia injection assembly 10 includes a fixing plate 1005, a supporting rod 1009 is fixedly connected to the left side of the upper surface of the fixing plate 1005, a cross beam 1001 is fixedly connected to the top of the supporting rod 1009, an ammonia injection cylinder 1002 is fixedly connected to the front end of the cross beam 1001, a corrugated cylinder 1003 is fixedly connected to the output end of the ammonia injection cylinder 1002, the corrugated cylinder 1003 is fixedly connected to the left side of the upper surface of the fixing plate 1005, an ammonia injection nozzle 1004 is fixedly connected to the bottom of the fixing plate 1005, the ammonia injection nozzle 1004 is communicated with the corrugated cylinder 1003, a communicating pipe 1006 is fixedly connected to the right side of the corrugated cylinder 1003, an electromagnetic valve 1008 is installed in the middle of the communicating pipe 1006, a storage tank 1007 is fixedly connected to the right side of the upper surface of the fixing plate 1005, and the storage tank 1007 is fixedly connected to the communicating pipe 1006;
The electromagnetic valve 1008 is opened, high-pressure ammonia stored in the storage tank 1007 is sprayed outwards due to internal pressure, the high-pressure ammonia enters the corrugated cylinder 1003 through the communicating pipe 1006, the electromagnetic valve 1008 is closed, the ammonia injection cylinder 1002 operates, the corrugated cylinder 1003 is pressed downwards, and the ammonia is extruded from the ammonia injection nozzle 1004, so that ammonia injection is completed.
The ammonia injection assembly 10, by a specific configuration or apparatus, injects ammonia into the flue 15 prior to assembly to provide ammonia feed to the entire assembly. Ammonia used by the ammonia injection assembly 10 can be ammonia water or ammonia gas obtained after urea pyrolysis, and part of ammonia injected into the flue 15 reacts with acidic pollutants in the flue 15 to generate ammonium salt, so that tempering of the flue gas is realized, the flue gas characteristics are changed, and the flue gas dust removal efficiency is improved; and the other part is used as a reducing agent to react with NOx in the flue gas under the action of a catalyst in the denitration and dust removal area to generate N2 and H2O.
Referring to fig. 1, a compressed air component 11 is in butt joint with an excitation electrode 8 through an insulating ceramic tube, and is sprayed out from the needling of the excitation electrode 8, and the working state of the component is controlled by a starting valve on a pipeline, and the component is mainly used for cleaning a catalytic electrode 7 and the excitation electrode 8, and a switching valve is arranged on the pipeline of the compressed air component 11, so that a plurality of switching valves can be arranged according to the size and the air consumption of the component, and the cleaning work of the whole area is completed in a staggered switching mode.
The data detection assembly 12, the ammonia injection assembly 10, the power supply body 6 for dust removal, the power supply 9 for denitration and dust removal and the compressed air assembly 11 are all in control connection with the centralized control center 13.
The data detection component 12 is used for detecting the operating parameters of the component and mainly comprises a component inlet and outlet cems smoke analyzer, an inlet cems is used for detecting the temperature, the smoke amount, dust, NOx and other data of inlet smoke, and an outlet cems is used for detecting the temperature, the smoke amount, the dust, the NOx, NH3 and other data of outlet smoke; ammonia addition; differential pressure in the high-energy electron electric field region, monitoring the running resistance of the high-energy electron electric field region, and the like.
The central control center 13 edits related programs through control logic, and adjusts the running state of the components in real time according to the component detection data. The inlet and outlet flue gas parameters detected by the component inlet and outlet cems flue gas analyzer are used for controlling the operation parameters of the power supply body 6 for dust removal, the power supply 9 for denitration dust removal and the ammonia addition amount of the ammonia injection component 10.
The centralized control center 13 interlocks and controls the operation of the components according to the component detection data, and meets all working conditions:
Measure one: and (3) the data of the inlet smoke quantity and NOx, and the ammonia injection quantity of the PID interlocking ammonia injection assembly 10 is according to the set ammonia nitrogen ratio.
And a second measure: and the operation power of the power supply body 6 for dust removal is controlled by PID interlocking according to the data of the imported dust and the set dust removal efficiency.
And step three: when the NOx and dust at the outlet are higher than the set values, the power supply 9 for denitration and dust removal is controlled in an interlocking way to improve the operation parameters; when the NOx and dust at the outlet are lower than the set values, the power supply 9 for denitration and dust removal is controlled in an interlocking manner to reduce the operation parameters.
When the operation parameters are raised, the operation voltage is preferentially adjusted, and then the operation frequency is adjusted; when the operation parameters are reduced, the operation frequency is preferentially adjusted, and then the operation voltage is adjusted. Wherein the running voltage is increased and decreased according to 5kV, the upper limit is 80kV, and the lower limit is 50kV; the frequency is increased and decreased according to 100Hz, the upper limit is 1000Hz, and the lower limit is 100Hz.
And a fourth measure: when the data of the outlet NH3 exceeds the emission limit value, but when the real-time hour average value does not exceed the limit value, the power supply 9 for the denitration and dust removal is controlled in an interlocking way to improve the operation parameters (the priority is higher than the condition of the parameter reduction in the third measure); when the data of the outlet NH3 exceeds the emission limit value and the real-time hour average value exceeds the limit value, the power supply 9 for denitration and dust removal is adjusted to improve the operation parameters, the ammonia injection amount is controlled in an interlocking manner, and the circulation is repeated in a mode of fine adjustment of the ammonia nitrogen ratio.
Fifth measure: differential pressure in the denitration and dust removal area, and whether the compressed air assembly 11 is put into operation or not is controlled in an interlocking mode. When the differential pressure is higher than the set value, the on-off valves of the interlocking control compressed air assembly 11 are sequentially and alternately opened at intervals, and the operation is stopped after one round of purging.
The first and second measures can be well adapted to the working condition with large fluctuation, and can rapidly respond according to the change of pollutants in the imported flue gas. And thirdly, a means for ensuring that the emission reaches the standard is adopted, and the outlet data is ensured to be lower than the emission limit value through the feedback of the operation parameters of the outlet data. The fourth measure is that ammonia escapes to ensure the emission to reach the standard, under the condition that the average value of the hours is not exceeded, the power supply parameter is preferentially improved, the plasma jet catalysis function is enhanced, the reaction is more efficient and rapid, the fluctuation of NOx emission caused by ammonia nitrogen ratio adjustment is avoided, the ammonia nitrogen ratio is adjusted only when the power supply is not controlled, and the emission is ensured to reach the standard. And fifthly, the high-efficiency operation of the denitration and dust removal area is guaranteed, the balance of the space area is improved through a mode of alternately arranging the denitration and dust removal areas, and the risk of exceeding emission standard is reduced.
The application principle of the invention is as follows: the flue gas containing dust and NOx is fully mixed with ammonia injected into the flue 15 in the flue 15, and then denitration and dust removal are carried out. The flue gas firstly diffuses at a reduced speed in the air inlet horn mouth 101, under the action of the inlet air flow uniform distribution component 2, the flue gas flows uniformly into the component, firstly passes through a dust removing area, is charged and collected on the dust collecting electrode 4 under the action of a dust removing high-voltage electric field, and the accumulated dust on the dust collecting electrode 4 is removed and collected in the dust hopper 104 in a periodical vibration mode. The flue gas after dust removal enters a denitration and dust removal area, and the high-energy electronic electric field can further charge and collect dust in the flue gas; meanwhile, under the action of plasma jet, active free radicals such as OH and O generated by ionization are combined with NO in flue gas to generate high-valence NOx and HNO3 aerosol, wherein the HNO3 aerosol is charged and collected under the action of an electric field, and the high-valence NOx and NH3 rapidly undergo oxidation-reduction reaction under the action of a catalyst to generate N2 and H2O. Along with the duration of the operation time, the differential pressure at two ends of the denitration and dust removal area can continuously rise, and the differential pressure transmitter is adopted for detecting the differential pressure at two ends of the denitration and dust removal area by the component, so that the compressed air component 11 is controlled in an interlocking manner. When the differential pressure reaches a set value, the switch valve of the compressed air assembly 11 is opened to purge the catalytic electrode 7 and the excitation electrode 8, remove deposited ash and collect the ash in the ash bucket 104. The flue gas after dust removal and denitration enters the back flue 15 of the assembly through the air outlet bell mouth 103.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a dust removal denitrification facility, a serial communication port, including flue (15), flue (15) left end fixedly connected with data detection subassembly (12), flue (15) left end fixedly connected with annotates ammonia subassembly (10), flue (15) right-hand member fixedly connected with steel constructs subassembly (1), import air current equipartition subassembly (2) are installed in steel constructs subassembly (1) left side, steel constructs subassembly (1) middle part fixedly connected with dust collecting electrode (4), steel constructs subassembly (1) middle part fixedly connected with discharge electrode (5), discharge electrode (5) fixedly connected with power source body (6) for dust removal, steel constructs subassembly (1) right side fixedly connected with catalytic electrode (7), steel constructs subassembly (1) right side fixedly connected with excitation electrode (8), excitation electrode (8) fixedly connected with denitration dust removal power source (9), excitation electrode (8) fixedly connected with compressed air subassembly (11), steel constructs subassembly (1) right side fixedly connected with export air current subassembly (3).
The dust collection pole (4) comprises a dust pole plate (402), at least one curved line (401) is fixedly connected to the front surface of the dust pole plate (402), and windproof ditch plates (403) are fixedly connected to two sides of the dust pole plate (402);
The discharge electrode (5) comprises an electrode plate (504), the top of the electrode plate (504) is fixedly connected with an inserting plate (502), at least one inserting opening (503) is formed in the top of the inserting plate (502), a wiring plug (501) is inserted into the inserting opening (503), and the front of the electrode plate (504) is fixedly connected with at least one electrode head (505);
The power supply body (6) for dust removal comprises a primary cabinet I (601), wherein the right end of the primary cabinet I (601) is fixedly connected with a transformer I (602), and the right end of the transformer I (602) is fixedly connected with an output insulator I (603);
The power supply (9) for denitration and dust removal comprises a tail junction box (906) and a second transformer (903), wherein an absorption insulator (905) is fixedly connected to the bottom of the tail junction box (906), denitration and dust removal equipment (14) is arranged between the tail junction box (906) and the second transformer (903), an output insulator (904) is fixedly connected to the bottom of the second transformer (903), a charger (902) is fixedly connected to the top of the second transformer (903), and a second primary cabinet (901) is fixedly connected to the right end of the second transformer (903);
Annotate ammonia subassembly (10) including fixed plate (1005), fixed plate (1005) upper surface left side fixedly connected with bracing piece (1009), bracing piece (1009) top fixedly connected with crossbeam (1001), crossbeam (1001) front end fixedly connected with annotates ammonia cylinder (1002), annotate the output fixedly connected with ripple section of thick bamboo (1003) of ammonia cylinder (1002), ripple section of thick bamboo (1003) fixedly connected with annotates ammonia mouth (1004) in fixed plate (1005) upper surface left side, fixed plate (1005) bottom fixedly connected with annotates ammonia mouth (1004), annotate ammonia mouth (1004) and ripple section of thick bamboo (1003) are linked together, ripple section of thick bamboo (1003) right side fixedly connected with communicating pipe (1006), communicating pipe (1006) mid-mounting has solenoid valve (1008), fixed plate (1005) upper surface right side fixedly connected with storage tank (1007), storage tank (1007) and communicating pipe (1006) fixedly connected with.
2. The dust removal and denitration device according to claim 1, wherein the steel structure component (1) comprises a shell (102), an air inlet horn mouth (101) is fixedly connected to the left end of the shell (102), the inlet air flow uniform distribution component (2) is installed in the air inlet horn mouth (101), the air inlet horn mouth (101) is fixedly connected with a flue (15), two ash hoppers (104) are fixedly connected to the bottom of the shell (102), an air outlet horn mouth (103) is fixedly connected to the right end of the shell (102), the outlet air flow uniform distribution component (3) is fixedly connected to the inside of the air outlet horn mouth (103), and at least one smoke blocking and guiding component (105) is fixedly connected to the inside of the shell (102).
3. The dust removal and denitration device according to claim 1, wherein the inlet airflow uniformly-distributing assembly (2) comprises a uniform plate (203), at least one uniform hole (206) is formed in the surface of the uniform plate (203) in a penetrating manner, the aperture of the uniform hole (206) is gradually increased from inside to outside, a main semi-spherical shell (205) is fixedly connected to the upper surface of the uniform plate (203), a main circular ring (204) is fixedly connected to the top of the main semi-spherical shell (205), at least one auxiliary semi-spherical shell (202) is fixedly connected to the upper surface of the uniform plate (203), an auxiliary circular ring (201) is fixedly connected to the top of the auxiliary semi-spherical shell (202), the main semi-spherical shell (205) and a plurality of auxiliary semi-spherical shells (202) are concentrically arranged, and the radius of the auxiliary semi-spherical shells (202) is increased at equal intervals.
4. The dedusting and denitration device according to claim 1, wherein the data detection assembly (12), the ammonia injection assembly (10), the dedusting power supply body (6), the denitration dedusting power supply (9) and the compressed air assembly (11) are all controlled and connected with a centralized control center (13).
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