CN109939541A - A kind of coking industry dry coke quenching tail gas by ammonia method desulfurizer - Google Patents
A kind of coking industry dry coke quenching tail gas by ammonia method desulfurizer Download PDFInfo
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- CN109939541A CN109939541A CN201910317454.4A CN201910317454A CN109939541A CN 109939541 A CN109939541 A CN 109939541A CN 201910317454 A CN201910317454 A CN 201910317454A CN 109939541 A CN109939541 A CN 109939541A
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- Prior art keywords
- pump
- tail gas
- coke quenching
- ammonia
- coking industry
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 52
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 28
- 238000004939 coking Methods 0.000 title claims abstract description 25
- 238000010791 quenching Methods 0.000 title claims abstract description 24
- 230000000171 quenching effect Effects 0.000 title claims abstract description 24
- 239000000571 coke Substances 0.000 title claims abstract description 23
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 41
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims abstract description 30
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 235000011130 ammonium sulphate Nutrition 0.000 claims abstract description 27
- 230000023556 desulfurization Effects 0.000 claims abstract description 26
- 239000007789 gas Substances 0.000 claims abstract description 24
- 239000000908 ammonium hydroxide Substances 0.000 claims abstract description 22
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011549 crystallization solution Substances 0.000 claims abstract description 12
- 239000003546 flue gas Substances 0.000 claims abstract description 12
- 238000011084 recovery Methods 0.000 claims abstract description 12
- 238000000746 purification Methods 0.000 claims abstract description 10
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 26
- 239000000243 solution Substances 0.000 claims description 18
- 238000005507 spraying Methods 0.000 claims description 15
- 238000002425 crystallisation Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 13
- 239000002699 waste material Substances 0.000 claims description 8
- 239000012141 concentrate Substances 0.000 claims description 7
- 238000004064 recycling Methods 0.000 claims description 6
- 230000008025 crystallization Effects 0.000 claims description 5
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims 1
- 230000003009 desulfurizing effect Effects 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 8
- 230000005611 electricity Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 4
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- AOSFMYBATFLTAQ-UHFFFAOYSA-N 1-amino-3-(benzimidazol-1-yl)propan-2-ol Chemical compound C1=CC=C2N(CC(O)CN)C=NC2=C1 AOSFMYBATFLTAQ-UHFFFAOYSA-N 0.000 description 1
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 1
- MNEGTUBRGXJVSD-UHFFFAOYSA-N N.O.O=S=O Chemical compound N.O.O=S=O MNEGTUBRGXJVSD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 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
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulfur dioxide Inorganic materials O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 1
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- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a kind of coking industry dry coke quenching tail gas by ammonia method desulfurizers, it is related to tail gas desulfurization field, including flue gas purification system, ammonium sulfate crystallization solution recycle system, ammonium hydroxide feed system, Mead-Bauer recovery system, the technique water supply system based on desulfuration absorbing tower, the ammonium sulfate crystallization solution recycle system, technique water supply system, ammonium hydroxide feed system are connected to the flue gas purification system respectively, and the Mead-Bauer recovery system is connected to flue gas purification system, ammonium sulfate crystallization solution recycle system, ammonium hydroxide feed system, technique water supply system.The present invention designs on the basis of existing running device, does not newly increase investment；It is consistent with the existing desulfurization material of coking industry to facilitate unified management using ammonia desulfurizing process；Using desulfurizing tower synergy tower tray technology, than traditional desulfurizing tower economize on electricity 30% or so；Using demisting+tube bank depth demister, desulfuration efficiency is up to 99% or more；It is energy-efficient using the ammonium sulfate extracting and concentrating technology of original creation.
Description
Technical field
The present invention relates to dry coke quenching the field of tail gas treatment more particularly to a kind of coking industry dry coke quenching tail gas by ammonia method desulfurization to fill
It sets.
Background technique
Since sulfide is usually no more than 300mg/m in the coking industry dry coke quenching tail gas of operation at present3, many coking
General dedusting not desulfurization of industry dry coke quenching tail gas, but with the intensification of environmental improvement dynamics, now require must desulfurization could expire
Sufficient environmental emission standard.
There has been no the relevant technologies for coking industry dry coke quenching tail gas desulfurization process field at present, other have tail gas desulfurization demand
Field sulfide content is higher, is not suitable for the field.
Therefore, it is de- to be dedicated to developing a kind of energy-efficient coking industry dry coke quenching tail gas by ammonia method by those skilled in the art
Sulphur device.
Summary of the invention
In view of the above drawbacks of the prior art, the technical problem to be solved by the present invention is to coking industry dry coke quenching tail gas
Desulfurization.
To achieve the above object, the present invention provides a kind of coking industry dry coke quenching tail gas by ammonia method desulfurizer, features
It is, including the flue gas purification system based on desulfuration absorbing tower, ammonium sulfate crystallization solution recycle system, ammonium hydroxide supply system
System, Mead-Bauer recovery system, technique water supply system, the ammonium sulfate crystallization solution recycle system, technique water supply system, ammonium hydroxide
Feed system is connected to the flue gas purification system respectively, the Mead-Bauer recovery system and flue gas purification system, ammonium sulfate crystallization
Solution recycle system, ammonium hydroxide feed system, technique water supply system are connected to.
Further, the desulfuration absorbing tower includes inlet baffle door, bottom cavity, desulfurization spraying layer, demister, tube bank
The side on the bottom cavity top is arranged in demister, exit stack, the inlet baffle door, and the desulfurization spraying layer removes
Day with fog, tube bank demister, exit stack are successively set on from lower to upper on the bottom cavity.
Further, the bottom cavity lower part is provided with Pump for giving-out and liquid outlet pipe, and described liquid outlet pipe one end passes through
The Pump for giving-out is connected to the cavity bottom, and the other end is connected to the desulfurization spraying layer, can will be in the bottom cavity
Liquid is delivered to the desulfurization spraying layer.
Further, sprayed slurry-saturation ammonium sulfate/ammonium sulfite solution pH value controls in the desulfurization spraying layer
In 5.0-5.6.
Further, the bottom cavity lower part is provided with air intake pump and admission line, and the admission line passes through described
Air intake pump is connected to the bottom cavity.
Further, the ammonium sulfate crystallization solution recycle system includes solution discharge pump, concentrate cyclone, crystallisation cycle
Slot, condensing crystallizing circulating pump and solution circulation duct, the desulfuration absorbing tower, solution discharge pump, concentrate cyclone, crystallisation cycle
Slot, condensing crystallizing circulating pump are sequentially connected logical by the solution circulation duct.
Further, ammonium hydroxide supply system includes system ammonia vessel, aqua ammonia pump and ammonium hydroxide circulation duct, the ammonia vessel,
Aqua ammonia pump is sequentially communicated with the desulfuration absorbing tower by the ammonium hydroxide circulation duct.
Further, the technique water supply system include technique sink, technique water pump and water pipe, the technique sink,
Technique water pump is sequentially communicated with the desulfuration absorbing tower by the water pipe.
Further, the Mead-Bauer recovery system includes melt pit and waste recycling pipeline, and the melt pit takes off with described respectively
Sulphur absorption tower, the crystallisation cycle slot, the ammonia vessel, the bottom of the technique sink are connected by the waste recycling pipeline
It is logical.
Further, the Mead-Bauer recovery system side is provided with sump pump and circulating line, the melt pit, sump pump and
The ammonium sulfate crystallization circulating slot is connected by the circulating line.
The present invention has the following technical effect that
(1) reservation existing coking industry dry coke quenching equipment position is constant, and air-introduced machine is constant, on the basis of existing running device
Design, does not newly increase investment, does not influence dry quenching system normal operation.
(2) ammonia desulfurizing process is used, it is consistent with the existing desulfurization material of coking industry to facilitate unified management.
(3) desulfurizing tower synergy tower tray technology is used, than traditional desulfurizing tower economize on electricity 30% or so, substantially reduces production cost.
(4) demisting+tube bank depth demister is used, to ensure that flue gas emission " trailing whites " less provide safeguard again is arranged
It applies, desulfuration efficiency is high, up to 99% or more.
(5) using the ammonium sulfate extracting and concentrating technology of original creation, guarantee the decline of coking ammonium sulfate separation system load, solution follows
Circular rector decline.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of a preferred embodiment of the invention；
Wherein 1-1-inlet baffle door, 1-2-bottom cavity, 1-3-desulfurization spraying layer, 1-4-demister, 1-5-pipe
Beam demister, 1-6-exit stack, 1-7-Pump for giving-out, 1-8-liquid outlet pipe, 1-9-air intake pump, 1-10-admission line,
2-1-solution discharge pump, 2-2-concentrate cyclone, 2-3-crystallisation cycle slot, 2-4-condensing crystallizing circulating pump, 2-5-solution
Circulation duct, 3-1-ammonia vessel, 3-2 aqua ammonia pump, 3-3 ammonium hydroxide circulation duct, 4-1-technique sink, 4-2-technique water pump, 4-
3-water pipes, 5-1-melt pit, 5-2-waste recycling pipeline, 5-3-sump pump, 5-4-circulating line.
Specific embodiment
Multiple preferred embodiments of the invention are introduced below with reference to Figure of description, keep its technology contents more clear and just
In understanding.The present invention can be emerged from by many various forms of embodiments, and protection scope of the present invention not only limits
The embodiment that Yu Wenzhong is mentioned.
In the accompanying drawings, the identical component of structure is indicated with same numbers label, everywhere the similar component of structure or function with
Like numeral label indicates.The size and thickness of each component shown in the drawings are to be arbitrarily shown, and there is no limit by the present invention
The size and thickness of each component.Apparent in order to make to illustrate, some places suitably exaggerate the thickness of component in attached drawing.
As shown in Figure 1, the present invention includes inlet baffle door 1-1, bottom cavity 1-2, desulfurization spraying layer 1-3, demister 1-
4, demister 1-5, exit stack 1-6, Pump for giving-out 1-7, liquid outlet pipe 1-8, air intake pump 1-9, admission line 1-10, solution are restrained
Discharge pump 2-1, concentrate cyclone 2-2, crystallisation cycle slot 2-3, condensing crystallizing circulating pump 2-4, solution circulation duct 2-5, ammonium hydroxide
Slot 3-1, aqua ammonia pump 3-2, ammonium hydroxide circulation duct 3-3, technique sink 4-1, technique water pump 4-2, water pipe 4-3, melt pit 5-1, waste liquid
Recovery channel 5-2, sump pump 5-3, circulating line 5-4.
Gas cleaning is carried out in flue gas purification system: dry coke quenching tail gas enters desulfuration absorbing tower through inlet baffle door 1-1, from
It is lower and it is upper pass through desulfurization spraying layer 1-3, the flue gas after desulfurization enters back into synergy pipe after preliminary demisting by top demister 1-4
Beam demister 1-5 is drained into atmosphere through exit stack 1-6 after ultralow dedusting demisting.
Ammonium sulfate crystallization solution circulates in the progress of ammonium sulfate crystallization solution recycle system: producing after ammonium hydroxide sulfur dioxide absorption
Through ammonium sulfate crystallization mixed solution discharge pump 2-1 enter concentrate cyclone 2-2 containing a certain amount of ammonium sulfate mixed solution, just
Crystallisation cycle slot 2-3 is flowed into after step concentration, is divided into two parts using condensing crystallizing circulating pump 2-4, ammonium sulfate after a part concentration
Crystallization is sent to coking industry ammonium sulfate separation system and carries out ammonium sulfate separation, and another part returns to desulfurizing tower and continues cycling through use,
The process of circulation all passes through solution circulation duct 2-5 progress.
Ammonium hydroxide feed system, which provides, reacts required ammonium hydroxide: ammonium hydroxide enters ammonia vessel 3-1 and is sent to desulfurizing tower by aqua ammonia pump 3-2
Desulfurization uses, and the process of circulation all passes through ammonium hydroxide circulation duct 3-3 progress.
Mead-Bauer recovery system recycles the waste liquid that each link generates and recycles: each system flush and a small amount of drain are by giving up
Liquid recovery channel 5-2 recycling enters melt pit 5-1, is sent to ammonium sulfate crystallization circulating slot using sump pump 5-2 and circulating line 5-4
2-3, which is recirculated, to be used.
Technique water supply system supplies water for cleaning: process water enters technique sink 4-1 by water pipe 4-3, by technique
Water 4-2 pressurization is sent to each equipment and rinses water system.
Ammonia process occurs to absorb SO in the spraying zone of desulfurizing tower2Reaction, sprayed slurry-saturation in desulfurization spraying layer 1-3
The control of ammonium sulfate/ammonium sulfite solution pH value occurs following reaction and generates ammonium hydrogen sulfate and ammonium bisulfite in 5.0-5.6:
SO2﹢ H2O=H2SO3、H2SO3﹢ (NH4)2SO4=NH4HSO4﹢ NH4HSO3、H2SO3﹢ (NH4)2SO3=2NH4HSO3.Desulfurization spraying layer
Liquid after 1-3 reaction flows into bottom cavity 1-2, injects ammonia in the bottom bottom cavity 1-2, and following reaction occurs and neutralizes acid
Matter: H2SO3﹢ NH3=NH4HSO3、NH4HSO3﹢ NH3=(NH4)SO3、NH4HSO4﹢ NH3=(NH4)2SO4, by air intake pump 1-9 and
Admission line 1-10 injects oxidation air in the bottom bottom cavity 1-2, and following reaction, which occurs, makes ammonium sulfite be oxidized to sulfuric acid
Ammonium: (NH4)2SO3﹢ 1/2O2=(NH4)2SO4。
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that the ordinary skill of this field is without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be within the scope of protection determined by the claims.
Claims (10)
1. a kind of coking industry dry coke quenching tail gas by ammonia method desulfurizer, which is characterized in that including based on desulfuration absorbing tower
Flue gas purification system, ammonium sulfate crystallization solution recycle system, ammonium hydroxide feed system, Mead-Bauer recovery system, technique water supply system,
The ammonium sulfate crystallization solution recycle system, technique water supply system, ammonium hydroxide feed system respectively with the flue gas purification system
Connection, the Mead-Bauer recovery system and flue gas purification system, ammonium sulfate crystallization solution recycle system, ammonium hydroxide feed system, technique
Water supply system is connected to.
2. coking industry dry coke quenching tail gas by ammonia method desulfurizer as described in claim 1, which is characterized in that the desulfurization absorbs
Tower includes inlet baffle door, bottom cavity, desulfurization spraying layer, demister, tube bank demister, exit stack, the inlet baffle
The side on the bottom cavity top is arranged in door, and the desulfurization spraying layer, demister, tube bank demister, exit stack are under
It is up successively set on the bottom cavity.
3. coking industry dry coke quenching tail gas by ammonia method desulfurizer as claimed in claim 2, which is characterized in that the bottom cavity
Lower part is provided with Pump for giving-out and liquid outlet pipe, and described liquid outlet pipe one end is connected to by the Pump for giving-out with the cavity bottom,
The other end is connected to the desulfurization spraying layer, liquid in the bottom cavity can be delivered to the desulfurization spraying layer.
4. coking industry dry coke quenching tail gas by ammonia method desulfurizer as claimed in claim 2, which is characterized in that the desulfurization spray
The control of sprayed slurry-saturation ammonium sulfate/ammonium sulfite solution pH value is in 5.0-5.6 in layer.
5. coking industry dry coke quenching tail gas by ammonia method desulfurizer as claimed in claim 2, which is characterized in that the bottom cavity
Lower part is provided with air intake pump and admission line, and the admission line is connected to by the air intake pump with the bottom cavity.
6. coking industry dry coke quenching tail gas by ammonia method desulfurizer as claimed in claim 2, which is characterized in that the ammonium sulfate knot
Brilliant solution recycle system includes solution discharge pump, concentrate cyclone, crystallisation cycle slot, condensing crystallizing circulating pump and solution runner pipe
Road, the desulfuration absorbing tower, solution discharge pump, concentrate cyclone, crystallisation cycle slot, condensing crystallizing circulating pump pass through the solution
Circulation duct is sequentially connected logical.
7. coking industry dry coke quenching tail gas by ammonia method desulfurizer as claimed in claim 6, which is characterized in that the ammonium hydroxide supply
System includes system ammonia vessel, aqua ammonia pump and ammonium hydroxide circulation duct, and the ammonia vessel, aqua ammonia pump and the desulfuration absorbing tower pass through described
Ammonium hydroxide circulation duct is sequentially communicated.
8. coking industry dry coke quenching tail gas by ammonia method desulfurizer as claimed in claim 7, which is characterized in that the process water supplies
It include technique sink, technique water pump and water pipe to system, the technique sink, technique water pump and the desulfuration absorbing tower pass through institute
Water pipe is stated to be sequentially communicated.
9. coking industry dry coke quenching tail gas by ammonia method desulfurizer as claimed in claim 8, which is characterized in that the devil liquor recovery
System include melt pit and waste recycling pipeline, the melt pit respectively with the desulfuration absorbing tower, the crystallisation cycle slot, the ammonia
Sink, the technique sink bottom be connected by the waste recycling pipeline.
10. coking industry dry coke quenching tail gas by ammonia method desulfurizer as claimed in claim 9, which is characterized in that the waste liquid returns
Receipts system side is provided with sump pump and circulating line, and the melt pit, sump pump and the ammonium sulfate crystallization circulating slot pass through institute
Circulating line is stated to be connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910317454.4A CN109939541A (en) | 2019-04-19 | 2019-04-19 | A kind of coking industry dry coke quenching tail gas by ammonia method desulfurizer |
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| Application Number | Priority Date | Filing Date | Title |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112221337A (en) * | 2020-10-13 | 2021-01-15 | 沈阳铝镁设计研究院有限公司 | A kind of method and device for solving ammonia desulfurization aerosol |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112221337A (en) * | 2020-10-13 | 2021-01-15 | 沈阳铝镁设计研究院有限公司 | A kind of method and device for solving ammonia desulfurization aerosol |
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