CN117191653B - Flue gas monitoring equipment and method - Google Patents
Flue gas monitoring equipment and method Download PDFInfo
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- CN117191653B CN117191653B CN202310935709.XA CN202310935709A CN117191653B CN 117191653 B CN117191653 B CN 117191653B CN 202310935709 A CN202310935709 A CN 202310935709A CN 117191653 B CN117191653 B CN 117191653B
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- 238000000034 method Methods 0.000 title claims abstract description 23
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000003546 flue gas Substances 0.000 title claims abstract description 22
- 238000012544 monitoring process Methods 0.000 title claims description 24
- 239000000523 sample Substances 0.000 claims abstract description 138
- 238000003756 stirring Methods 0.000 claims abstract description 109
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 238000007791 dehumidification Methods 0.000 claims abstract description 64
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 239000000428 dust Substances 0.000 claims abstract description 34
- 238000010521 absorption reaction Methods 0.000 claims abstract description 30
- 238000005070 sampling Methods 0.000 claims abstract description 14
- 238000012806 monitoring device Methods 0.000 claims abstract description 10
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 7
- 231100000719 pollutant Toxicity 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 39
- 239000007788 liquid Substances 0.000 claims description 31
- 238000009833 condensation Methods 0.000 claims description 24
- 230000005494 condensation Effects 0.000 claims description 24
- 230000000670 limiting effect Effects 0.000 claims description 19
- 239000000779 smoke Substances 0.000 claims description 16
- 238000007664 blowing Methods 0.000 claims description 11
- 238000007667 floating Methods 0.000 claims description 8
- 239000011261 inert gas Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 claims description 2
- 230000002829 reductive effect Effects 0.000 description 16
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 10
- 238000011010 flushing procedure Methods 0.000 description 8
- 239000002250 absorbent Substances 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000002274 desiccant Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 241000607479 Yersinia pestis Species 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000738 capillary electrophoresis-mass spectrometry Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- 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
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Combustion & Propulsion (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Thermal Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The application relates to a flue gas monitoring device and method, comprising a sampling probe, a dust removing component for filtering particles in a sample, a dehumidifying component and a monitor for detecting the content of pollutants in the sample, wherein the sample input end of the dust removing component is communicated with the sample output end of the sampling probe, and the sample output end of the dust removing component is communicated with the detection end of the monitor; the dehumidifying component comprises a dehumidifying box, a water absorption layer arranged at the bottom of the dehumidifying box and a condensate layer arranged above the water absorption layer, wherein the water absorption layer is made of a water absorption material, the condensate layer is formed by paving condensate which is insoluble in water and has a density smaller than that of water above the water absorption layer, a sample input end of the dehumidifying box is arranged in the condensate layer and is communicated with a sample output end of the dedusting component, and a sample output end of the dehumidifying box is arranged at the top and is communicated with a sample input end of the monitor; the bottom of dehumidification case is provided with the stirring piece that is used for stirring the condensate layer. The application can dehumidify and reduce the influence on detection precision.
Description
Technical Field
The application relates to the field of smoke detection technology, in particular to smoke monitoring equipment and method.
Background
The flue gas monitoring is to monitor the concentration and total emission amount of gaseous pollutants and particulate matters discharged by an atmospheric pollution source, and is mainly aimed at factories needing combustion such as combustion power plants, cement plants, chemical plants and garbage incineration plants at present so as to monitor whether harmful substances in discharged gas exceed standards in real time and reduce the occurrence of atmospheric pollution.
In the prior art, CEMS is often used to monitor the discharged flue gas, and the flue gas needs to be classified into harmful substance monitoring and particulate matter monitoring when the flue gas is monitored. In pest monitoring, in order to reduce the influence of an interfering substance on the monitoring result, it is generally necessary to perform dust removal and dehumidification treatment on the sampled exhaust gas during sampling.
However, in the prior art, when dehumidification is performed on a sample, condensation dehumidification, vortex tube refrigeration dehumidification and desiccant adsorption dehumidification are often adopted, and the condensation dehumidification and the vortex tube refrigeration dehumidification are performed in a condensation manner, so that water vapor in the sample is condensed into moisture, and at the moment, sulfides in the sample, such as sulfur dioxide, are dissolved in the water, so that a relatively large error exists in a final monitoring result. If the drying agent is adopted for dehumidification, dust is easily generated due to the crushing of the drying agent in the drying process, and the monitoring result is influenced. Therefore, how to reduce the influence on the monitoring accuracy while dehumidifying is a problem to be solved at present.
Disclosure of Invention
In order to reduce the influence of dehumidification on smoke monitoring accuracy, the application provides smoke monitoring equipment and method.
In a first aspect, the present application provides a smoke monitoring device, which adopts the following technical scheme:
the flue gas monitoring equipment comprises a sampling probe, a dust removing component for filtering particles in a sample, a dehumidifying component and a monitor for detecting the content of pollutants in the sample, wherein the sample input end of the dust removing component is communicated with the sample output end of the sampling probe, and the sample output end of the dust removing component is communicated with the detection end of the monitor; the dehumidifying component comprises a dehumidifying box, a water absorption layer arranged at the bottom of the dehumidifying box and a condensate layer arranged above the water absorption layer, wherein the water absorption layer is made of water absorption materials, the condensate layer is formed by paving condensate which is insoluble in water and has a density smaller than that of water above the water absorption layer, a sample input end of the dehumidifying box is arranged in the condensate layer and is communicated with a sample output end of the dedusting component, and a sample output end of the dehumidifying box is arranged at the top and is communicated with a sample input end of the monitor; the bottom of the dehumidification box is provided with a stirring piece for stirring the condensed liquid layer.
By adopting the technical scheme, when the flue gas is monitored, the sampling probe pumps and conveys the flue gas sample into the condensate layer in the dehumidifying box after the dust removal component removes dust, and condenses and dehumidifies through the condensate layer, and in the condensation process, the stirring piece stirs the condensate in the condensate layer, so that water generated by condensation in the sample flows towards the inner wall of the dehumidifying box under the action of centrifugal force, and is absorbed by the water absorption layer under the action of gravity, so that the possibility of contact between the water and the sample is reduced; the sample gas rises into the dehumidifying box in the form of bubbles, so that the contact time of water generated after condensation and the sample is reduced, the loss of water-soluble components such as sulfur dioxide in the sample is reduced, the sample is conveyed to the detection end of the monitor for sample detection, the loss of sample pollutants in the dehumidifying process is effectively reduced, and the influence of dehumidification on the sample detection precision is reduced.
Optionally, the dehumidification case includes dehumidification top cap and sets up in the dehumidification end case of dehumidification top cap open-ended, the dehumidification end case is located the below of dehumidification top cap and both can dismantle the connection, water absorption layer and condensate layer all set up in the dehumidification end case.
Through adopting above-mentioned technical scheme, the dismantlement of accessible dehumidification top cap and dehumidification base box to the change of water absorption layer is convenient for carry out, reduces because of the unable possibility that leads to water and sample contact of absorbing water in water absorption layer.
Optionally, the stirring piece is including rotating puddler, the agitator motor of connecting in the dehumidification case, the output shaft of agitator motor passes through the driving medium and connects in puddler and a plurality of fixed connection in the stirring vane of puddler, stirring vane is located the condensate layer, agitator motor sets up in the dehumidification case.
Through adopting above-mentioned technical scheme, when stirring, only need the agitator motor drive the puddler through the driving medium and rotate to drive stirring vane stirring condensate layer can.
Optionally, the dehumidification case is provided with the input piece that is used for the input sample, the puddler is tubulose, the input piece is including coaxial the wearing input tube of locating in the puddler and set up in the input check valve of input tube, just the flow direction of input check valve sets up towards the dehumidification case, the input tube wears to establish and fixed connection in the dehumidification case, rotary seal sets up between input tube and the puddler inner wall, the sample delivery outlet of puddler is located the condensate layer.
Through adopting above-mentioned technical scheme, at the in-process of inputting the sample to the dehumidification case, the sample is through in the input tube is with the sample input puddler, then through the puddler with sample input to condensate in situ, because the condensate can rotate when stirring for the bubble that water and sample produced moves towards the direction of keeping away from the puddler, thereby can be abundant condensation relatively.
Optionally, the driving medium includes the first bevel gear of rotating connection in the dehumidification case outer wall and the second bevel gear of meshing in first bevel gear, the puddler is coaxial wears to establish and fixed connection in first bevel gear, the coaxial fixed connection of second bevel gear is in agitator motor's output shaft.
Through adopting above-mentioned technical scheme, when driving motor's output shaft rotates, the accessible second bevel gear drives first bevel gear and drives the puddler and rotate, reduces simultaneously with the interference between the input.
Optionally, the top of puddler is the closed setting and a plurality of exhaust holes have been seted up to the week side, the opening slope of exhaust hole sets up towards the diapire of dehumidification case, just the exhaust hole is located stirring vane and faces one side of dehumidification case diapire.
Through adopting above-mentioned technical scheme, a plurality of exhaust holes can break up sample gas to further make the condensate contact of sample and condensate liquid layer, further optimize the effect of condensation, reduce the content of moisture in the discharge dehumidification case sample.
Optionally, the layer that absorbs water is for adopting the resin that absorbs water to make and bottom fixed connection in the diapire of dehumidification case, the layer that absorbs water has the restriction board that can permeate water towards one side cladding of stirring vane, the restriction board slides and connects in the puddler, the outer wall of puddler is provided with the restriction ring that is used for making restriction board slide locking, just the restriction ring is equipped with the siren that the cooperation restriction board triggered, the restriction ring is located one side of stirring vane towards the layer that absorbs water.
Through adopting above-mentioned technical scheme, because the water absorption layer can absorb moisture to at the in-process expansion of absorbed moisture, can promote the limiting plate and slide towards stirring vane this moment, accessible limiting ring restriction water absorption layer's expansion and in time start the siren this moment, and in time change the water absorption layer, reduce the possibility of water and sample contact.
Optionally, still including the back-flushing subassembly that is used for back-flushing monitor's detection end and pipeline, the back-flushing subassembly is including storing inert gas's back-flushing gas pitcher and back-flushing air pump, the input of back-flushing air pump communicates in the back-flushing gas pitcher, the output of back-flushing air pump communicates in the top of dehumidification case, just be provided with in the dehumidification case and be used for exporting the derivation piece to input check valve input with gas.
By adopting the technical scheme, when the detection end of the monitor is blocked or intermittent detection is carried out, the detection end, the pipeline and the dehumidification box of the inert gas blowback monitor in the blowback gas tank can be blowback through the blowback gas pump, and meanwhile, the gas in the dehumidification box is blowback to the dust removal component through the guide-out piece, so that the influence of a residual sample in the dehumidification box on the subsequent detection precision is reduced; the detection end of the monitor can be back-blown to reduce the attached sundries.
Optionally, derive the piece and include deriving the floater, derive cover and delivery tube, derive the floater and float and set up in the condensate layer, derive cover fixed connection in deriving the floater, just derive the cover and seted up a plurality of partial submergence in the export of condensate layer, the one end of delivery tube is fixed and is linked together in the top of deriving the cover, the other end of delivery tube wears out the dehumidification case and connects in the connecting portion of input tube and input check valve input, the delivery tube is the flexible pipe.
Through adopting above-mentioned technical scheme, because the condensate layer can absorb water and float because the water layer absorbs water, derive the ball that floats this moment and can drive and derive the cover and follow the float that the condensate is and remove to because the part of guiding out the mouth submerges in the condensate in situ, can make the abundant discharge of liquid in the dehumidification case when blowback behind the delivery tube, carry out the blowback to dust removal subassembly and input tube, thereby abundant reduction dust removal subassembly, input tube, dehumidification case and other pipeline in remaining sample.
In a second aspect, the present application provides a smoke monitoring method, which adopts the following technical scheme:
a smoke monitoring method comprising the steps of: sample dust removal: and dedusting the sample through a dedusting assembly, and inputting the dedusted sample into a dehumidifying box.
Sample dehumidification: and introducing the sample gas subjected to dust removal into condensate which has the density less than that of water and is not compatible with water for condensation, and stirring the condensate through a stirring piece in the condensation process to enable the sample gas to directly rise, wherein water generated by condensation is distributed on the periphery of the condensate under the action of rotating centrifugal force, so that the rapid separation of the sample and the water generated after condensation is realized.
Sample detection: and inputting the dehumidified sample gas to a detection end of the monitor for detection.
In summary, the present application includes at least one of the following beneficial technical effects:
during flue gas monitoring, a sampling probe pumps a flue gas sample into and conveys the flue gas sample to a dust removal assembly for dust removal, then conveys the flue gas sample into a condensate layer through an input pipe, and condenses and dehumidifies through the condensate layer; meanwhile, in the condensation process, the stirring piece can stir condensate in the condensate layer, so that water generated by condensation in the sample flows towards the inner wall of the dehumidification box under the action of centrifugal force, and then flows towards the water absorption layer and is absorbed by the water absorption layer under the action of gravity, so that the possibility of contact between the water and the sample is reduced, and the loss of detected components of the sample in the dehumidification process is reduced; the sample gas rises into the dehumidifying box in the form of bubbles, so that the contact time of water generated after condensation and the sample is reduced, the loss of water-soluble components such as sulfur dioxide in the sample is reduced, the sample is conveyed to the detection end of the monitor for sample detection, the loss of sample pollutants in the dehumidifying process is effectively reduced, and the influence of dehumidification on the sample detection precision is reduced.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present application.
Fig. 2 is a schematic cross-sectional structure of the dehumidifying assembly in embodiment 1 of the present application.
Fig. 3 is a schematic structural view of the lead-out member and the input member in embodiment 1 of the present application.
Fig. 4 is a flow chart of the monitoring method in embodiment 2 of the present application.
Reference numerals illustrate: 1. a sampling probe; 2. a dust removal assembly; 3. a dehumidifying component; 31. a dehumidifying box; 311. a dehumidifying top cover; 312. a dehumidifying bottom case; 313. a protective bottom cover; 32. a water-absorbing layer; 321. a limiting plate; 33. a condensed liquid layer; 331. a condenser; 34. a stirring member; 341. a stirring rod; 342. a stirring motor; 343. stirring blades; 344. an exhaust hole; 345. a confinement ring; 346. a stirring ring; 347. a restraining nut; 35. a transmission member; 351. a first bevel gear; 352. a second bevel gear; 36. an input member; 361. an input tube; 362. inputting a one-way valve; 4. a monitor; 5. a blowback assembly; 51. a blowback gas tank; 52. a back-blowing air pump; 53. a lead-out member; 531. guiding out a floating ball; 532. a guide cover; 533. a delivery tube; 534. an outlet port; 535. a lead-out control valve; 536. a guide rod.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-4.
Example 1
The embodiment of the application discloses a flue gas monitoring equipment. Referring to fig. 1 and 2, the flue gas monitoring device comprises a sampling probe 1, a dust removal component 2 for filtering particulate matters in a sample, a dehumidifying component 3 and a monitor 4 for detecting the content of pollutants in the sample, wherein the sampling probe 1 is used for sucking flue gas in a production field and conveying the flue gas to the dust removal component 2, and a sample input end of the dust removal component 2 is communicated with a sample output end of the sampling probe 1. The sample output end of the dust removal component 2 is communicated with the sample input end of the dehumidification component 3, and the sample output end of the dehumidification component 3 is connected with the detection end of the monitor 4 so as to be used for detecting the processed sample. Wherein, the sample is the flue gas sample that sampling probe 1 draws. The dust removing component 2 is a commercially available heating flue gas dust remover, and is used for keeping the temperature of a sample, reducing the content of particles in the sample gas while condensing in the dust removing process.
Referring to fig. 1 and 2, in particular, the dehumidifying assembly 3 includes a dehumidifying tank 31, a water-absorbing layer 32 and a condensed liquid layer 33. The dehumidifying box 31 comprises a dehumidifying top cap 311 and a dehumidifying bottom box 312, wherein the dehumidifying bottom box 312 is arranged in an upper opening, and the dehumidifying top cap 311 covers the opening edge of the dehumidifying bottom box 312 and is connected with the dehumidifying bottom box 312 through a bolt flange. The water-absorbing layer 32 is disposed at the bottom of the dehumidifying bottom case 312, and the water-absorbing layer 32 is made of a water-absorbing material, such as a water-absorbing resin plate made of water-absorbing resin, for water-absorbing expansion; at the same time, in order to reduce the disturbance of the condensate layer 33, a semipermeable membrane can also be applied to the surface for isolating the condensate and water from passing through.
The condensed liquid layer 33 is laid above the water-absorbing layer 32 by condensate, and the condensate is liquid which has a density less than that of water and is insoluble in water, such as vegetable oil, coal oil, etc., so as to be used for condensing the sample and not react with sulfur dioxide in the sample, etc., thereby optimizing the detection accuracy of the monitor 4 and being convenient for replacing the condensed liquid layer 33 and the water-absorbing layer 32 in the dehumidifying bottom case 312. The dehumidifying bottom box 312 is provided therein with a condenser 331 for condensing the condensed liquid layer 33, and the condenser 331 is a commercially available refrigerator or a semiconductor refrigerator, in this embodiment, a semiconductor refrigerator.
Referring to fig. 1 and 2, the dust removing assembly 2 inputs a sample into the condensed liquid layer 33 in the dehumidifying bottom case 312 through the input 36, and the dehumidifying top cap 311 inputs the dehumidified sample into the detection end of the value monitor 4 through a pipe to detect. Wherein the dehumidifying bottom casing 312 is provided with a stirring member 34 for stirring the condensed liquid layer 33 so as to timely separate the condensed water from the sample gas.
The stirring member 34 includes a stirring rod 341 penetrating and rotatably connected to the dehumidifying bottom casing 312, a stirring motor 342, and a stirring blade 343, and the stirring rod 341 is vertically disposed and is of a tubular structure. One end of the stirring rod 341 extends into the condensed liquid layer 33, the other end of the stirring rod 341 penetrates out of the dehumidifying bottom box 312 and is connected to an output shaft of the stirring motor 342 through the transmission member 35, and the stirring rod 341 and the dehumidifying bottom box 312 are arranged in a rotary sealing manner through a rotary sealing ring.
Referring to fig. 1 and 2, the stirring vane 343 is provided with a plurality of stirring blades and surrounds the central axis of the stirring rod 341, and the stirring blade 343 is disposed in the condensed liquid layer 33 for stirring the condensed liquid layer 33, so that the condensed moisture flows to the circumferential side of the dehumidifying bottom box 312 under the stirring action, and is then absorbed by the water absorbing layer 32, and meanwhile, the sample is located in the condensed liquid layer 33, and a plurality of bubbles are generated in the condensed liquid layer 33, so that the condensed liquid and the sample are separated in time, and the influence on the detection accuracy due to the fact that the water-soluble components such as sulfur dioxide in the sample are dissolved in the water is reduced.
The driving member 35 includes a first bevel gear 351 and a second bevel gear 352 engaged with the first bevel gear 351, and one end of the stirring rod 341 located outside the dehumidifying bottom case 312 is coaxially penetrated and fixedly connected to the first bevel gear 351. The first bevel gear 351 is rotatably connected to the dehumidifying bottom case 312, the second bevel gear 352 is coaxially and fixedly connected to an output shaft of the stirring motor 342, and the second bevel gear 352 is rotatably connected to the dehumidifying bottom case 312, and the stirring motor 342 is fixedly mounted at the bottom of the dehumidifying bottom case 312. The bottom of the dehumidifying bottom case 312 is provided with a protective bottom cover 313 for covering the input member 36 and the stirring motor 342, the protective bottom cover 313 has an upper opening structure, and an opening edge is fixedly connected to the dehumidifying bottom case 312 through bolts.
Referring to fig. 1 and 2, in particular, the stirring rod 341 has a tubular structure and one end of the stirring rod 341 located in the condensed liquid layer 33 is provided in a closed manner. The input member 36 includes an input pipe 361 and an input check valve 362, the input pipe 361 is coaxially inserted through and rotatably connected to the stirring rod 341, the input pipe 361 and the inner wall of the stirring rod 341 are hermetically disposed by a rotary seal ring, and the input pipe 361 is fixedly connected to the protective bottom cover 313. One end of the input tube 361 is located at a portion of the stirring rod 341 extending into the condensate layer 33, and the other end of the input tube 361 penetrates out of the dehumidifying bottom box 312 and is connected to an output end of the input check valve 362, so that unidirectional input of a sample to the bottom of the dehumidifying bottom box 312 is achieved, and the possibility of condensate backflow is reduced. Wherein the flow direction of the input check valve 362 is set downward to dehumidify the bottom tank 312 to restrict the outflow of condensate in the condensate layer 33.
Meanwhile, a plurality of exhaust holes 344 are formed in the portion of the stirring rod 341 located in the condensed liquid layer 33, the plurality of exhaust holes 344 are arranged around the central axis of the stirring rod 341, and the exhaust holes 344 penetrate through the wall of the stirring rod 341 and are communicated with the inside, so that the sample gas of the input pipe 361 can be directly discharged into the condensed liquid layer 33 for condensation drying treatment, and the opening direction of the exhaust holes 344 is inclined downwards to the bottom wall of the dehumidifying bottom box 312 for increasing the time for condensing the sample in the condensed liquid layer 33. Wherein the exhaust hole 344 is located at a side of the stirring blade 343 toward the bottom wall of the dehumidifying bottom box 312 so that the sample can be discharged out of the condensed liquid layer 33 after condensation and dehumidification.
Referring to fig. 1 and 2, in addition, since the water-absorbing layer 32 expands after absorbing water, the condensed liquid layer 33 will rise as a whole after smoke monitoring for a long time, in order to reduce interference between the water-absorbing layer 32 and the stirring blade 343 and between the water-absorbing layer 32 and the air exhaust hole 344, a water-permeable limiting plate 321 is coated on one side of the water-absorbing layer 32 facing the stirring blade 343, and the limiting plate 321 is a mesh plate or a plate made of water-permeable material, so that the limiting plate 321 will be driven to slide towards the stirring blade 343 when the water-absorbing layer 32 expands. The outer wall of the stirring rod 341 is externally coated with a restriction ring 345, the restriction ring 345 is located at one side of the exhaust hole 344 toward the water absorbing layer 32, and the restriction ring 345 is located on the sliding path of the restriction plate 321 for sliding locking of the restriction plate 321. The limiting ring 345 is provided with an alarm for contact of the limiting plate 321, for example, an alarm controlled by a travel switch, so that the water-absorbing layer 32 is reminded of replacement after the water-absorbing layer 32 is used to absorb relatively much moisture.
Referring to fig. 2, meanwhile, in order to facilitate replacement of the water-absorbent layer 32, the water-absorbent layer is in a grid plate structure, so that the water-absorbent layer 32 is conveniently drawn out relative to the dehumidifying bottom casing 312, and after replacement of a new water-absorbent layer 32, the water-absorbent layer is directly pressed into the dehumidifying bottom casing 312 without drawing out condensate of the condensate layer 33.
And in order to reduce the disturbance of the stirring blade 343 to the replacement of the water absorbing layer 32, a stirring ring 346 is fixedly connected to one end of the stirring blade 343 facing the stirring rod 341, and the stirring ring 346 is sleeved and slidingly connected to the stirring rod 341 and is in pin joint with the stirring rod 341 so as to limit the relative circumferential rotation of the stirring blade 343 and the stirring rod 341. The end of the stirring rod 341 in the condensate layer 33 is in a stepped shaft structure with the small end facing upwards, the stirring ring 346 is sleeved on the small end of the stirring rod 341, the small end of the stirring rod 341 is in threaded connection with the limiting nut 347, and the stirring ring 346 is located between the large end of the stirring rod 341 and the limiting nut 347. Wherein, the limiting ring 345 is connected to the stirring ring 346 by a plurality of connecting rods, so that the limiting ring 345 is sleeved outside and fixedly connected to the outer wall of the stirring rod 341.
Referring to fig. 2 and 3, in addition, since the monitoring is intermittent and impurities in the flue gas easily cause the detection end of the monitor 4 to be blocked, a blowback component 5 is further disposed at the detection end of the monitor 4 for blowback the detection end of the monitor 4, the dehumidifying box 31 and the pipeline, so as to reduce the influence of blocking and residual sample on the subsequent detection accuracy.
The blowback subassembly 5 includes the blowback gas pitcher 51 that stores inert gas and blowback air pump 52, and blowback air pump 52 input is in the output of blowback gas pitcher 51 through the pipeline intercommunication, and the output of blowback air pump 52 is in the detection end of monitor 4 through the pipeline intercommunication to be used for with monitor 4 detection end's sample blowback to dehumidification case 31 in. The dehumidifying box 31 is provided with a guide 53 for guiding the gas to a connection portion between the input end of the input check valve 362 and the input pipe 361.
Referring to fig. 2 and 3, specifically, the guide 53 includes a guide float 531, a guide cover 532, and a guide pipe 533, the guide float 531 has a closed annular tubular structure, and the guide float 531 is floatingly provided in the condensed liquid layer 33. The guiding cover 532 covers the guiding floating ball 531 and fixedly connects the guiding floating ball 531 and the guiding cover 532 towards the opening of the condensed liquid layer 33 through the rod, so that the guiding cover 532 can float along with the lifting of the condensed liquid layer 33, a plurality of guiding outlets 534 are formed in the opening edge of the guiding cover 532, and part of the guiding outlets 534 are immersed in the condensed liquid layer 33, so that the gas in the dehumidifying box 31 can enter the guiding cover 532 through the guiding outlets 534.
Referring to fig. 2 and 3, one end of the outlet pipe 533 is fixedly connected to the top of the outlet cover 532, the other end of the outlet pipe 533 passes through the dehumidifying top cap 311 and is connected to a connection portion between the input pipe 361 and the input end of the input check valve 362, so that the blowback gas can flow into the input pipe 361, and the outlet pipe 533 is provided with an outlet control valve 535 for opening and closing the outlet pipe 533, so as to reduce the outflow of the sample gas during detection. Wherein, dehumidification top cap 311 is fixedly connected with a plurality of guide bars 536, and guide bars 536 are parallel to stirring rod 341, and guide bars 536 slide and connect in guide out cover 532 for guiding the floating of guide out cover 532. Wherein the delivery tube 533 is a flexible tube for accommodating the float of the delivery cap 532 and the delivery float 531.
Example 2
The application also discloses a smoke monitoring method. Referring to fig. 4, a smoke monitoring method includes the steps of: sample dust removal: the sample is dedusted by the dedusting assembly 2, and the dedusted sample is input into the dehumidifying box 31.
Specifically, the sample after dust removal is inputted into the value input pipe 361 through the input check valve 362 and discharged into the condensed liquid layer 33 through the exhaust hole 344 of the stirring rod 341.
Sample dehumidification: the sample gas after dust removal is introduced into condensate which has a density less than that of water and is not compatible with water for condensation, and in the condensation process, the stirring motor 342 drives the stirring rod 341 to rotate through the first bevel gear 351 and the second bevel gear 352, and simultaneously drives the stirring ring 346 and the stirring blades 343 to rotate and stir the condensate. Thereby rotating the condensate of the condensate layer 33, at which time the moisture is condensed and flows to the side wall position of the dehumidifying bottom casing 312 by the centrifugal force, and thereafter is absorbed by the water-absorbing layer 32. The sample gas rises and enters the dehumidifying top cap 311 and is input to the detection end of the monitor 4.
Sample detection: and inputting the dehumidified sample gas to a detection end of the monitor 4 for detection.
Meanwhile, after one end of use, the inert gas in the back-blowing gas tank 51 is back-blown to the detection end of the monitor 4 by the back-blowing gas pump 52, so that the possibility of blocking the detection end of the monitor 4 is reduced; the residual sample in the pipeline and the dehumidifying box 31 can be back-blown in time, so that the influence of residual sample gas on the detection result of the subsequent sample is reduced.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (7)
1. A flue gas monitoring device, characterized in that: the device comprises a sampling probe (1), a dust removing assembly (2) for filtering particles in a sample, a dehumidifying assembly (3) and a monitor (4) for detecting the content of pollutants in the sample, wherein the sample input end of the dust removing assembly (2) is communicated with the sample output end of the sampling probe (1), and the sample output end of the dust removing assembly (2) is communicated with the detection end of the monitor (4);
the dehumidifying component (3) comprises a dehumidifying box (31), a water absorption layer (32) arranged at the bottom of the dehumidifying box (31) and a condensate layer (33) arranged above the water absorption layer (32), wherein the water absorption layer (32) is made of a water absorption material, the condensate layer (33) is formed by paving condensate which is insoluble in water and has a density smaller than that of water above the water absorption layer (32), a sample input end of the dehumidifying box (31) is arranged in the condensate layer (33) and is communicated with a sample output end of the dedusting component (2), and a sample output end of the dehumidifying box (31) is arranged at the top and is communicated with a sample input end of the monitor (4); a stirring piece (34) for stirring the condensed liquid layer (33) is arranged at the bottom of the dehumidifying box (31); the stirring piece (34) comprises a stirring rod (341) and a stirring motor (342), wherein the stirring rod (341) is rotatably connected to the dehumidifying box (31), an output shaft of the stirring motor (342) is connected to the stirring rod (341) and a plurality of stirring blades (343) fixedly connected to the stirring rod (341) through a transmission piece (35), the stirring blades (343) are positioned in the condensed liquid layer (33), and the stirring motor (342) is arranged in the dehumidifying box (31); the water absorption layer (32) is made of water absorption resin, the bottom of the water absorption layer is fixedly connected to the bottom wall of the dehumidification box (31), one side, facing the stirring blade (343), of the water absorption layer (32) is coated with a water-permeable limiting plate (321), the limiting plate (321) is connected to the stirring rod (341) in a sliding mode, a limiting ring (345) used for enabling the limiting plate (321) to slide and lock is arranged on the outer wall of the stirring rod (341), the limiting ring (345) is provided with an alarm triggered by the matching limiting plate (321), and the limiting ring (345) is located on one side, facing the water absorption layer (32), of the stirring blade (343); the dehumidifier box (31) is provided with an input piece (36) for inputting samples, the stirring rod (341) is tubular, the input piece (36) comprises an input pipe (361) coaxially penetrating through the stirring rod (341) and an input one-way valve (362) arranged in the input pipe (361), the flowing direction of the input one-way valve (362) is set towards the dehumidifier box (31), the input pipe (361) penetrates through and is fixedly connected with the dehumidifier box (31), a rotary seal is arranged between the input pipe (361) and the inner wall of the stirring rod (341), and a sample output port of the stirring rod (341) is positioned in a condensate layer (33).
2. A smoke monitoring device according to claim 1, wherein: the dehumidification case (31) comprises a dehumidification top cover (311) and a dehumidification bottom case (312) arranged on the opening of the dehumidification top cover (311), the dehumidification bottom case (312) is arranged below the dehumidification top cover (311) and detachably connected with the dehumidification top cover and the dehumidification top cover, and the water absorption layer (32) and the condensation liquid layer (33) are arranged in the dehumidification bottom case (312).
3. A smoke monitoring device according to claim 1, wherein: the transmission part (35) comprises a first bevel gear (351) rotatably connected to the outer wall of the dehumidifying box (31) and a second bevel gear (352) meshed with the first bevel gear (351), the stirring rod (341) is coaxially arranged in a penetrating mode and fixedly connected to the first bevel gear (351), and the second bevel gear (352) is coaxially and fixedly connected to an output shaft of the stirring motor (342).
4. A smoke monitoring device according to claim 1, wherein: the top of puddler (341) is the closed setting and a plurality of exhaust holes (344) have been seted up to the week side, the opening slope of exhaust hole (344) is towards the diapire setting of dehumidification case (31), just exhaust hole (344) are located one side of stirring vane (343) towards dehumidification case (31) diapire.
5. A smoke monitoring device according to claim 1, wherein: the device is characterized by further comprising a back blowing component (5) which is used for a detection end of the back blowing monitor (4) and a pipeline, wherein the back blowing component (5) comprises a back blowing gas tank (51) for storing inert gas and a back blowing gas pump (52), the input end of the back blowing gas pump (52) is communicated with the back blowing gas tank (51), the output end of the back blowing gas pump (52) is communicated with the top of the dehumidifying box (31), and an outlet piece (53) used for leading out gas to the input end of the input check valve (362) is arranged in the dehumidifying box (31).
6. A smoke monitoring device according to claim 5, wherein: the guide-out piece (53) comprises a guide-out floating ball (531), a guide-out cover (532) and a guide-out pipe (533), wherein the guide-out floating ball (531) is arranged on the condensate layer (33) in a floating mode, the guide-out cover (532) is fixedly connected with the guide-out floating ball (531), the guide-out cover (532) is provided with a plurality of guide-out ports (534) which are partially immersed in the condensate layer (33), one end of the guide-out pipe (533) is fixed and communicated with the top of the guide-out cover (532), the other end of the guide-out pipe (533) penetrates out of the dehumidifying box (31) and is connected with the connecting part of the input end of the input pipe (361) and the input check valve (362), and the guide-out pipe (533) is a flexible pipe.
7. A monitoring method using a smoke monitoring device according to any one of claims 1-6, characterized in that: the method comprises the following steps: sample dust removal: dedusting the sample through a dedusting assembly (2), and inputting the dedusted sample into a dehumidification box (31);
sample dehumidification: introducing the sample gas subjected to dust removal into condensate which has the density less than that of water and is not compatible with water for condensation, stirring the condensate through a stirring piece (34) in the condensation process to enable the sample gas to directly rise, and distributing the water generated by condensation on the periphery of the condensate under the action of rotating centrifugal force so as to realize rapid separation of the sample and the water generated by condensation;
sample detection: and inputting the dehumidified sample gas to a detection end of a monitor (4) for detection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310203204.4A CN116296711A (en) | 2023-03-03 | 2023-03-03 | Flue gas monitoring equipment and method |
| CN2023102032044 | 2023-03-03 |
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| Publication Number | Publication Date |
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| CN117191653A CN117191653A (en) | 2023-12-08 |
| CN117191653B true CN117191653B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310203204.4A Withdrawn CN116296711A (en) | 2023-03-03 | 2023-03-03 | Flue gas monitoring equipment and method |
| CN202310935709.XA Active CN117191653B (en) | 2023-03-03 | 2023-07-27 | Flue gas monitoring equipment and method |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202310203204.4A Withdrawn CN116296711A (en) | 2023-03-03 | 2023-03-03 | Flue gas monitoring equipment and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118217739B (en) * | 2024-05-23 | 2024-09-20 | 张家港市金帆环保科技有限公司 | Plastic board dust remover for dehumidification |
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| WO2022083174A1 (en) * | 2020-10-21 | 2022-04-28 | 西安西热锅炉环保工程有限公司 | Online measurement system and method for hcl in flue gas |
| CN114720212A (en) * | 2022-06-08 | 2022-07-08 | 南京波瑞自动化科技有限公司 | A adjustable speed sampling device for particulate matter concentration detection in flue |
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2023
- 2023-03-03 CN CN202310203204.4A patent/CN116296711A/en not_active Withdrawn
- 2023-07-27 CN CN202310935709.XA patent/CN117191653B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN209485924U (en) * | 2018-12-06 | 2019-10-11 | 杭州绿洁环境科技股份有限公司 | A kind of fugitive dust monitoring device and system |
| CN210533809U (en) * | 2019-04-02 | 2020-05-15 | 刘纪平 | Sampling device for pollution source flue gas pump |
| CN212568150U (en) * | 2020-06-03 | 2021-02-19 | 杭州瑞晓自动化仪表有限公司 | Pollution source flue gas preprocessing device |
| WO2022083174A1 (en) * | 2020-10-21 | 2022-04-28 | 西安西热锅炉环保工程有限公司 | Online measurement system and method for hcl in flue gas |
| CN112763445A (en) * | 2020-12-25 | 2021-05-07 | 上海琉兴环保科技有限公司 | Ultralow emission on-line monitoring system of coal fired power plant flue gas pollutant |
| CN215985405U (en) * | 2021-08-31 | 2022-03-08 | 临洮县东莒太阳能科技有限责任公司 | A dust collection system for open-air environmental monitoring |
| CN114720212A (en) * | 2022-06-08 | 2022-07-08 | 南京波瑞自动化科技有限公司 | A adjustable speed sampling device for particulate matter concentration detection in flue |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116296711A (en) | 2023-06-23 |
| CN117191653A (en) | 2023-12-08 |
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