CN113877359A - Waste gas treatment system for laboratory - Google Patents
Waste gas treatment system for laboratory Download PDFInfo
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- CN113877359A CN113877359A CN202010627512.6A CN202010627512A CN113877359A CN 113877359 A CN113877359 A CN 113877359A CN 202010627512 A CN202010627512 A CN 202010627512A CN 113877359 A CN113877359 A CN 113877359A
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- waste gas
- pipeline
- carbon adsorption
- washing tower
- spray
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- 239000002912 waste gas Substances 0.000 title claims abstract description 118
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 96
- 238000001179 sorption measurement Methods 0.000 claims abstract description 61
- 239000007921 spray Substances 0.000 claims abstract description 58
- 238000005406 washing Methods 0.000 claims abstract description 43
- 239000007789 gas Substances 0.000 claims abstract description 38
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 20
- 239000000779 smoke Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 50
- 238000005507 spraying Methods 0.000 claims description 40
- 238000012856 packing Methods 0.000 claims description 14
- 238000005201 scrubbing Methods 0.000 claims description 13
- 238000003795 desorption Methods 0.000 claims description 12
- 230000008676 import Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 241001640558 Cotoneaster horizontalis Species 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 238000000746 purification Methods 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 description 23
- 230000002378 acidificating effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002341 toxic gas Substances 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910001872 inorganic gas Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 239000010805 inorganic waste Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 125000001997 phenyl group Chemical class [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
- B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
-
- 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
- B01D53/14—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 absorption
- B01D53/1425—Regeneration of liquid absorbents
-
- 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
- B01D53/14—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 absorption
- B01D53/1431—Pretreatment by other processes
- B01D53/1437—Pretreatment by adsorption
-
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
- B01D53/185—Liquid distributors
-
- 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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40084—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by exchanging used adsorbents with fresh adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
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- 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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a waste gas treatment system for a laboratory, which comprises a waste gas collecting pipeline, an induced draft fan, a first waste gas pipeline, an active carbon adsorption box, a second waste gas pipeline, a spray washing tower, an exhaust pipeline, an exhaust fan and a smoke window, wherein one end of the waste gas collecting pipeline is communicated with the top of a laboratory operation cabinet, the other end of the waste gas collecting pipeline is communicated with an air inlet of the induced draft fan, an air outlet of the induced draft fan is communicated with a waste gas inlet of the active carbon adsorption box through the first waste gas pipeline, a waste gas outlet of the active carbon adsorption box is communicated with a waste gas inlet at the lower part of the spray washing tower through the second waste gas pipeline, a purified gas outlet at the top of the spray washing tower is communicated with an air inlet of the exhaust fan through the exhaust pipeline, and the smoke window is arranged at an air outlet of the exhaust fan. It will adsorb to handle and spray the mode combination and be in the same place, carries out comprehensive abundant purification treatment to waste gas, has improved the exhaust-gas treatment effect.
Description
Technical Field
The invention relates to the technical field of laboratory equipment, in particular to a waste gas treatment system for a laboratory.
Background
The laboratory is a place where laboratory personnel perform experimental analysis and scientific research activities, various chemical reagents and medicines can be used in the experimental analysis process, the reagents and the medicines can volatilize various toxic and harmful waste gases, and various chemical reactions in the experimental process can also generate the waste gases; the sources of the waste gas mainly comprise volatile matters of reagents and samples, intermediate products in the analysis process, leaked and evacuated standard gas, carrier gas and the like, and the main components of the waste gas are organic waste gas (benzene series, ethanol, carbon tetrachloride, methane, diethyl ether, aldehydes and the like) and inorganic waste gas (hydrogen chloride, hydrogen bromide, chlorine, ammonia and the like).
In recent years, pollution of laboratories is becoming more serious, wherein the problem of waste gas pollution is getting more attention, and if the waste gas is not treated or not treated properly, the pollution not only affects the working environment and the health of experimenters, but also seriously affects the living environment of surrounding residents; however, the components of the waste gas generated in the experimental process are complex and diversified, so that the existing laboratory waste gas treatment system has poor waste gas purification treatment efficiency and poor waste gas purification effect.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a waste gas treatment system for a laboratory, which combines an adsorption treatment mode and a spraying mode together to comprehensively and fully purify waste gas and improve the waste gas treatment effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a waste gas treatment system for a laboratory, which comprises a waste gas collecting pipeline, an induced draft fan, a first waste gas pipeline, an active carbon adsorption box, a second waste gas pipeline, a spraying washing tower, an exhaust pipeline, an exhaust fan and a smoke window, wherein one end of the waste gas collecting pipeline is communicated with the top of a laboratory operation cabinet, the other end of the waste gas collecting pipeline is communicated with an air inlet of the induced draft fan, an air outlet of the induced draft fan is communicated with a waste gas inlet of the active carbon adsorption box through the first waste gas pipeline, a waste gas outlet of the active carbon adsorption box is communicated with a waste gas inlet at the lower part of the spraying washing tower through the second waste gas pipeline, a purified gas outlet at the top of the spraying washing tower is communicated with the air inlet of the exhaust fan through the exhaust pipeline, and the smoke window is installed at an air outlet of the exhaust fan;
be provided with liquid storage tank, spray set, packing layer and defogging device in the washing tower sprays, the liquid storage tank is located bottom in the washing tower sprays, spray the washing tower outside and install the circulation tank, the circulation tank with the liquid storage tank is linked together, defogging device fixed mounting be in top in the washing tower sprays, the packing layer is provided with the multilayer, the multilayer the packing layer is from last fixed mounting down on the inside wall at spraying the washing tower middle part, spray set is located every the top of packing layer, just spray set fixed mounting be in on the washing tower inside wall sprays, spray set one end respectively through the liquid inlet pipeline with the circulation tank is linked together, install the water pump on the liquid inlet pipeline.
The further improvement lies in that a stirrer is fixedly arranged in the circulating pool, and a charging hole is arranged on the circulating pool. According to the nature of the waste gas to be treated, a proper absorption liquid is added into the circulating pool through the feed inlet, for example, a weak alkaline absorption liquid can be added into the acidic waste gas through the feed inlet, a weak acidic absorption liquid can be added into the alkaline waste gas, the newly added absorption liquid and the absorption liquid used in circulation can be uniformly mixed through the stirrer, and the absorption liquid is sprayed out through the spraying device, so that toxic gas in the waste gas is removed, and the waste gas treatment effect is further improved.
The improved spraying device is characterized in that the spraying device comprises a distribution main pipe, distribution branch pipes and nozzles, one end of the distribution main pipe is fixedly arranged on the inner side wall of the spraying and washing tower through a support, the other end of the distribution branch pipe is communicated with the liquid inlet pipeline, the diameter of the distribution main pipe is gradually reduced along the radial direction, the large-diameter end of the distribution main pipe is positioned right above the waste gas inlet of the spraying and washing tower, the distribution main pipe is provided with a plurality of distribution branch pipes in an equidistant communication mode on the two opposite sides, the free ends of the distribution branch pipes are fixed on the inner side wall of the spraying and washing tower through the support, and the nozzles which are uniformly distributed are arranged at the bottom of the distribution branch pipes. Through setting up, absorption liquid in the circulating bath sprays to spraying the scrubbing tower in through the nozzle full aspect among the spray set, purify the waste gas that gets into to spraying the scrubbing tower, purification treatment is effectual, because it is the biggest to be close to the exhaust gas concentration who locates at the exhaust gas import in the spraying scrubbing tower, adopt the design of diameter gradual change formula to the distribution person in charge, and set up major diameter end in the biggest exhaust gas import top of exhaust gas concentration, guaranteed to spray a large amount of absorption liquid to the higher department of exhaust gas concentration, and only need spray a small amount of absorption liquid to the less department of exhaust gas concentration, both guaranteed and sprayed purifying effect, the use amount of absorption liquid has also been saved simultaneously.
The improved structure is characterized in that a plurality of baffle plates are arranged in the activated carbon adsorption box in a vertically staggered mode along the flowing direction of waste gas, a gap for waste gas circulation is reserved between each baffle plate and the top or the bottom of the activated carbon adsorption box, and a plurality of activated carbon adsorption plates are arranged between every two adjacent baffle plates in a sliding mode from top to bottom at equal intervals. Through being provided with a plurality of baffling boards crisscross from top to bottom in the active carbon adsorption incasement, the active carbon adsorption board is fixed between two adjacent baffling boards, and waste gas moves at the active carbon adsorption incasement with S type route, has effectively prolonged the functioning path of waste gas in the active carbon adsorption incasement, has increased the dwell time of waste gas in the active carbon adsorption incasement, has improved the adsorption effect of active carbon adsorption board to organic matter in the waste gas.
The improved structure is characterized in that sliding ends are arranged at the left end and the right end of the activated carbon adsorption plate, and sliding chutes in sliding fit with the sliding ends are arranged at the corresponding positions of the baffle plates. The sliding end at the end part of the activated carbon adsorption plate is in sliding fit with the sliding groove on the baffle plate, so that the activated carbon adsorption plate can be conveniently replaced or cleaned.
The further improvement lies in that desorption steam import has been seted up to being close to in exhaust gas outlet department on the active carbon adsorption case, desorption steam export has been seted up to being close to in exhaust gas inlet department on the active carbon adsorption case. During desorption, the moving direction of hot gas is opposite to the moving path of waste gas, and the hot gas still moves in the activated carbon adsorption box along an S-shaped route, so that organic matters on the activated carbon adsorption plate can be effectively desorbed, and the desorption effect of the equipment is ensured.
The further improvement is that a plurality of observation windows are arranged on the spray washing tower, and the observation windows are respectively and correspondingly arranged at the positions of the spray device and the demisting device. The condition in the spraying washing tower can be visually seen through the observation window, so that the operation personnel can quickly make adjustment, and the normal work of the spraying washing tower is ensured.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, waste gas generated in a laboratory is collected and then is adsorbed and purified by the activated carbon adsorption plate in the activated carbon adsorption box, organic matters in the waste gas can be comprehensively adsorbed, then the waste gas is absorbed and purified by the absorption liquid sprayed by the spraying device in the spraying washing tower, inorganic toxic gas in the waste gas can be neutralized, the waste gas is comprehensively purified, the waste gas treatment effect is improved, the purified gas reaches the emission standard, and the purified gas is directly discharged into the atmosphere through the smoke window; wherein the absorption liquid in the spray washing tower after reacting with the inorganic gas in the waste gas returns to the liquid storage tank under the action of gravity, and the absorption liquid after use enters into the circulating tank after being treated, is pumped to the spray device by the water pump again for spraying, and can be recycled.
Drawings
The invention is described in further detail below with reference to specific embodiments and with reference to the following drawings.
FIG. 1 is a schematic view showing the overall structure of a laboratory waste gas treatment system according to the present invention;
FIG. 2 is a schematic view of the internal structure of the activated carbon adsorption tank according to the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a schematic structural view of an activated carbon adsorption plate according to the present invention;
FIG. 5 is a schematic view of the internal structure of the spray scrubber according to the present invention;
FIG. 6 is a schematic structural view of a spray device according to the present invention;
wherein, the specific reference numbers are: laboratory operation cabinet 1, waste gas collection pipeline 2, draught fan 3, first waste gas pipeline 4, activated carbon adsorption case 5, baffling board 6, spout 7, activated carbon adsorption plate 8, sliding end 9, desorption hot gas import 10, desorption hot gas export 11, second waste gas pipeline 12, spray scrubbing tower 13, observation window 14, liquid storage tank 15, circulation tank 16, agitator 17, charge door 18, liquid inlet pipeline 19, water pump 20, spray set 21, the distribution is responsible for 22, distribution branch pipe 23, packing layer 25, defogging device 26, exhaust pipe 27, exhaust fan 28, smoke window 29.
Detailed Description
The embodiment of the invention discloses a laboratory waste gas treatment system, which comprises a waste gas collecting pipeline 2, an induced draft fan 3, a first waste gas pipeline 4 and an activated carbon adsorption box 5 as shown in figure 1, second waste gas pipeline 12, spray the scrubbing tower 13, exhaust pipe 27, exhaust fan 28 and smoke window 29, 2 one end in waste gas collection pipeline is linked together with laboratory operation cabinet 1 top, the 2 other ends in waste gas collection pipeline are linked together with the air intake of draught fan 3, the air outlet of draught fan 3 is linked together through the waste gas entry of first waste gas pipeline 4 with active carbon adsorption box 5, the waste gas export of active carbon adsorption box 5 is linked together through second waste gas pipeline 12 and the waste gas import of spraying scrubbing tower 13 lower part, the purified gas export at spraying scrubbing tower 13 top is linked together through the air intake of exhaust pipe 27 with exhaust fan 28, smoke window 29 is installed to the air outlet department of exhaust fan 28. As shown in fig. 5, a liquid storage tank 15, a spraying device 21, a packing layer 25 and a demisting device 26 are arranged in the spraying and washing tower 13, the liquid storage tank 15 is arranged at the bottom in the spraying and washing tower 13, a circulating tank 16 is arranged outside the spraying and washing tower 13, the circulating tank 16 is communicated with the liquid storage tank 15, a filter screen is arranged at the communication position of the liquid storage tank 15 and the circulating tank 16, the demisting device 26 is fixedly arranged at the top in the spraying and washing tower 13, the packing layer 25 is provided with a plurality of layers, the plurality of layers of packing layers 25 are fixedly arranged on the inner side wall in the middle of the spraying and washing tower 13 from top to bottom, the spraying device 21 is arranged above each packing layer 25, and the spray set 21 is fixedly installed on the inner side wall of the spray washing tower 13, one end of the spray set 21 is respectively communicated with the circulating pool 16 through a liquid inlet pipeline 19, a water pump 20 is installed on the liquid inlet pipeline 19, and two layers of packing layers 25 and two spray sets 21 are arranged in the embodiment.
As shown in fig. 2 to 4, a plurality of baffle plates 6 are staggered up and down in the flow direction of the exhaust gas in the activated carbon adsorption tank 5, a gap for the circulation of the exhaust gas is reserved between the baffle plates 6 and the top or bottom of the activated carbon adsorption tank 5, and a plurality of activated carbon adsorption plates 8 are arranged between two adjacent baffle plates 6 in a sliding manner at equal intervals from top to bottom. Through being provided with a plurality of baffling boards 6 crisscross from top to bottom in activated carbon adsorption case 5, activated carbon adsorption board 8 is fixed between two adjacent baffling boards 6, and waste gas moves in activated carbon adsorption case 5 with the S type route, has effectively prolonged the moving path of waste gas in activated carbon adsorption case 5, has increased the dwell time of waste gas in activated carbon adsorption case 5, has improved the adsorption effect of activated carbon adsorption board 8 to organic matter in the waste gas.
Wherein, both ends all are provided with slip end 9 about active carbon adsorption plate 8, and the corresponding department of baffling board 6 is provided with spout 7 with slip fit of slip end 9. The sliding end 9 at the end part of the activated carbon adsorption plate 8 is in sliding fit with the sliding groove 7 on the baffle plate 6, so that the activated carbon adsorption plate 8 can be conveniently replaced or cleaned. The desorption hot gas inlet 10 is arranged close to the waste gas outlet on the activated carbon adsorption box 5, and the desorption hot gas outlet 11 is arranged close to the waste gas inlet on the activated carbon adsorption box 5. During desorption, the moving direction of hot gas is opposite to the moving path of waste gas, and the hot gas still moves in the activated carbon adsorption box 5 along an S-shaped route, so that organic matters on the activated carbon adsorption plate 8 can be effectively desorbed, and the desorption effect of the equipment is ensured.
Wherein, a stirrer 17 is fixedly arranged in the circulating tank 16, and a feed inlet 18 is arranged on the circulating tank 16. According to the nature of the waste gas to be treated, a proper absorption liquid is added into the circulating pool 16 through the feed inlet 18, for example, a weak alkaline absorption liquid can be added into the acidic waste gas through the feed inlet 18, a weak acidic absorption liquid can be added into the alkaline waste gas, the newly added absorption liquid and the absorption liquid used in circulation can be uniformly mixed through the stirrer 17, and the absorption liquid is sprayed out through the spraying device 21, so that toxic gas in the waste gas is removed, and the waste gas treatment effect is further improved.
As shown in fig. 6, the spraying device 21 includes a main distribution pipe 22, branch distribution pipes 23 and nozzles, one end of the main distribution pipe 22 is fixedly disposed on the inner side wall of the spray washing tower 13 through a support, the other end of the branch distribution pipe 23 is communicated with the liquid inlet pipeline 19, the diameter of the main distribution pipe 22 gradually decreases along the radial direction, the large diameter end of the main distribution pipe 22 is located right above the waste gas inlet of the spray washing tower 13, a plurality of branch distribution pipes 23 are disposed on opposite sides of the main distribution pipe 22 at equal intervals, the free ends of the branch distribution pipes 23 are fixed on the inner side wall of the spray washing tower 13 through a support, and a plurality of uniformly distributed nozzles are mounted at the bottom of the branch distribution pipes 23. Through setting up, the absorbing liquid in the circulation pond 16 sprays to spraying the scrubbing tower 13 in through the nozzle full aspect among the spray set 21, it purifies to entering into to spraying the waste gas of scrubbing tower 13 to spray, purification treatment is effectual, because it is the biggest near to the exhaust gas concentration of exhaust gas import department in the scrubbing tower 13 to spray, adopt diameter gradual change formula design to the distribution person in charge 22, and set up major diameter end in the biggest exhaust gas import top of exhaust gas concentration, guaranteed to spray a large amount of absorbing liquid to the higher department of exhaust gas concentration, and only need spray a small amount of absorbing liquid to the less department of exhaust gas concentration, both guaranteed to spray purifying effect, the use amount of absorbing liquid has also been saved simultaneously.
Wherein, a plurality of observation windows 14 are opened on the spray washing tower 13, in this embodiment, three observation windows 14 are provided, and the three observation windows 14 are respectively and correspondingly disposed at the positions of the two spray devices 21 and the defogging device 26. The condition inside the spray washing tower 13 can be visually seen through the observation window 14, so that the operator can conveniently and quickly make adjustment, and the normal work of the spray washing tower 13 is ensured.
According to the invention, waste gas generated in a laboratory is collected and then is adsorbed and purified by the activated carbon adsorption plate 8 in the activated carbon adsorption box 5, organic matters in the waste gas can be comprehensively adsorbed, then the waste gas is absorbed and purified by the absorption liquid sprayed by the spraying device 21 in the spraying washing tower 13, inorganic toxic gas in the waste gas can be neutralized, the waste gas is comprehensively purified, the waste gas treatment effect is improved, the purified gas reaches the emission standard, and the purified gas is directly discharged into the atmosphere through the smoke window 29; wherein the absorption liquid in the spray washing tower 13 after reacting with the inorganic gas in the waste gas returns to the liquid storage tank 15 under the action of gravity, the used absorption liquid enters the circulating tank 16 after being treated, and is pumped to the spraying device 21 by the water pump 20 again for spraying, so that the absorption liquid can be recycled.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (7)
1. The utility model provides a laboratory is with waste gas treatment system, its characterized in that, collects pipeline, draught fan, first waste gas pipeline, active carbon adsorption case, second waste gas pipeline, sprays the scrubbing tower, exhaust pipe, exhaust fan and smoke window including waste gas, waste gas collection pipeline one end is linked together with laboratory operation cupboard top, the waste gas collection pipeline other end with the air intake of draught fan is linked together, the air outlet of draught fan through first waste gas pipeline with the waste gas entry of active carbon adsorption case is linked together, the waste gas export of active carbon adsorption case through second waste gas pipeline with the waste gas import of spraying the scrubbing tower lower part is linked together, the purified gas outlet at spraying scrubbing tower top pass through the exhaust pipe with the air intake of exhaust fan is linked together, the smoke window is installed to the air outlet department of exhaust fan;
be provided with liquid storage tank, spray set, packing layer and defogging device in the washing tower sprays, the liquid storage tank is located bottom in the washing tower sprays, spray the washing tower outside and install the circulation tank, the circulation tank with the liquid storage tank is linked together, defogging device fixed mounting be in top in the washing tower sprays, the packing layer is provided with the multilayer, the multilayer the packing layer is from last fixed mounting down on the inside wall at spraying the washing tower middle part, spray set is located every the top of packing layer, just spray set fixed mounting be in on the washing tower inside wall sprays, spray set one end respectively through the liquid inlet pipeline with the circulation tank is linked together, install the water pump on the liquid inlet pipeline.
2. The laboratory waste gas treatment system according to claim 1, wherein a stirrer is fixedly installed in the circulating pool, and a charging opening is formed in the circulating pool.
3. The laboratory waste gas treatment system according to claim 1 or 2, wherein the spraying device comprises a main distribution pipe, a branch distribution pipe and nozzles, one end of the main distribution pipe is fixedly arranged on the inner side wall of the spray washing tower through a support, the other end of the branch distribution pipe is communicated with the liquid inlet pipeline, the diameter of the main distribution pipe is gradually reduced along the radial direction, the large-diameter end of the main distribution pipe is positioned right above the waste gas inlet of the spray washing tower, the two opposite sides of the main distribution pipe are provided with a plurality of branch distribution pipes in an equidistant communication mode, the free ends of the branch distribution pipes are fixed on the inner side wall of the spray washing tower through supports, and the nozzles are installed at the bottoms of the branch distribution pipes.
4. The laboratory waste gas treatment system according to claim 1, wherein a plurality of baffle plates are arranged in the activated carbon adsorption box in a vertically staggered manner along a waste gas flowing direction, a gap for waste gas to flow is reserved between each baffle plate and the top or the bottom of the activated carbon adsorption box, and a plurality of activated carbon adsorption plates are arranged between every two adjacent baffle plates in a sliding manner at equal intervals from top to bottom.
5. The laboratory waste gas treatment system according to claim 4, wherein sliding ends are arranged at the left end and the right end of the activated carbon adsorption plate, and sliding grooves in sliding fit with the sliding ends are arranged at positions corresponding to the baffle plates.
6. The laboratory waste gas treatment system according to claim 4 or 5, wherein a desorption hot gas inlet is formed in the activated carbon adsorption tank near the waste gas outlet, and a desorption hot gas outlet is formed in the activated carbon adsorption tank near the waste gas inlet.
7. The laboratory waste gas treatment system according to claim 1, wherein a plurality of observation windows are formed in the spray scrubber, and the observation windows are respectively and correspondingly arranged at the positions of the spray device and the demisting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010627512.6A CN113877359A (en) | 2020-07-02 | 2020-07-02 | Waste gas treatment system for laboratory |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010627512.6A CN113877359A (en) | 2020-07-02 | 2020-07-02 | Waste gas treatment system for laboratory |
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| CN113877359A true CN113877359A (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010627512.6A Pending CN113877359A (en) | 2020-07-02 | 2020-07-02 | Waste gas treatment system for laboratory |
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| CN115090085A (en) * | 2022-06-29 | 2022-09-23 | 中国矿业大学 | Old dead zone coal slime water gas-liquid fluidization exploitation device |
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Application publication date: 20220104 |