CN117138543A - Laboratory waste gas treatment system and method - Google Patents
Laboratory waste gas treatment system and method Download PDFInfo
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- CN117138543A CN117138543A CN202311189497.1A CN202311189497A CN117138543A CN 117138543 A CN117138543 A CN 117138543A CN 202311189497 A CN202311189497 A CN 202311189497A CN 117138543 A CN117138543 A CN 117138543A
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- 239000002912 waste gas Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 94
- 230000003647 oxidation Effects 0.000 claims abstract description 41
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 41
- 239000000945 filler Substances 0.000 claims abstract description 34
- 238000005406 washing Methods 0.000 claims abstract description 33
- 239000002994 raw material Substances 0.000 claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 29
- 238000012856 packing Methods 0.000 claims abstract description 28
- 238000002485 combustion reaction Methods 0.000 claims abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 239000003546 flue gas Substances 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims description 21
- 239000003595 mist Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 150000003384 small molecules Chemical class 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000003344 environmental pollutant Substances 0.000 claims description 5
- 231100000719 pollutant Toxicity 0.000 claims description 5
- 239000002585 base Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 239000002351 wastewater Substances 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 238000005336 cracking Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims description 3
- 238000004880 explosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002360 explosive Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
-
- 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
-
- 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
- B01D53/75—Multi-step processes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The application discloses a laboratory waste gas treatment system and a method, which relate to the technical field of waste gas treatment and comprise the following steps: the device comprises a plasma chamber, an oxidation chamber, a circulating water tank and a packing washing tower, wherein the input end of the plasma chamber is used for receiving raw material waste gas from a laboratory, and the output end of the plasma generator is connected with the input end of the oxidation chamber; the output end of the oxidation chamber is connected with the circulating water tank, the circulating water tank is used for cooling and filtering the flue gas of the oxidation chamber, and the oxidation chamber is subjected to external jacket circulating water cooling; the circulating water tank is internally provided with a circulating water pump, and the circulating water tank is communicated with the filler washing tower. The application has the advantages of carrying out localized treatment on flammable, explosive and corrosive gases with small air volume generated in the laboratory production process, and solving the problem of safety threat in the aspects of combustion, explosion, corrosion leakage and the like caused by the waste gas in pipeline transportation.
Description
Technical Field
The application relates to the technical field of waste gas treatment, in particular to a laboratory waste gas treatment system and method.
Background
The laboratory can produce various harmful acid gases in the daily experiment process, and the direct discharge of acid harmful gases into the atmosphere can cause serious pollution to the atmosphere, so that the acid gases are usually required to be discharged into the atmosphere after being treated by arranging an exhaust gas treatment system.
In the related art, silane is used as a gas source for providing a silicon component, has strong reactivity and spontaneous combustibility, has a very wide spontaneous ignition range and extremely strong combustion energy, has very high toxicity, and can generate hydrogen by the reaction of silane and ammonia in the laboratory process, so that the tail gas of the laboratory process is a gas with low flow and high danger, and if the tail gas is directly discharged into a central waste gas treatment system, the risk of explosion or combustion is very high,
accordingly, there is a need for laboratory exhaust treatment systems and methods that treat high-risk exhaust gases in situ and that eliminate the risk of flammability or explosion before being exhausted to a central exhaust treatment system.
For the problems in the related art, no effective solution has been proposed at present.
Disclosure of Invention
The present application provides a laboratory exhaust gas treatment system and method for solving the above-mentioned problems of the prior art.
The technical scheme of the application is realized as follows:
in one aspect of the application:
a laboratory exhaust treatment system comprising: a plasma chamber, an oxidation chamber, a circulating water tank and a filler washing tower, wherein;
the input end of the plasma chamber is used for receiving raw material waste gas from a laboratory, and the output end of the plasma generator is connected with the input end of the oxidation chamber;
the output end of the oxidation chamber is connected with the circulating water tank, the circulating water tank is used for cooling and filtering the flue gas of the oxidation chamber, and the oxidation chamber is subjected to external jacket circulating water cooling;
a circulating water pump is arranged in the circulating water tank, and the circulating water tank is communicated with the filler washing tower;
the filler washing tower is internally provided with a spraying layer and a demisting layer, the spraying layer is connected with the circulating water pump through a spraying pipeline, and raw material waste gas flows to the demisting layer through a spraying layer and flows out through a gas outlet of the filler washing tower.
Further, a plasma generator is arranged in the plasma chamber, and a plurality of groups of air guide plates used for inflow of raw material waste gas are arranged at the top end of the plasma chamber.
Further, a cyclone separator is connected between the circulating water tank and the filler washing tower.
Further, the circulating water tank is also connected with a dosing tank, the dosing tank is connected with a dosing pump, and the dosing pump is electrically connected with the controller.
Furthermore, the circulating water pump is connected with a heat exchanger, and the heat exchanger is connected with an outer jacket of the oxidation chamber for circulating water cooling.
Further, a packing layer is arranged in the packing washing tower, the spraying layer is positioned at the top end of the packing layer, and the circulating water pump uniformly sprays circulating water into the packing layer through the porous water distributor.
In another aspect of the application:
a method of laboratory exhaust treatment for a laboratory exhaust treatment system, comprising the steps of:
introducing raw material waste gas of a laboratory into a plasma chamber in advance, performing high-pressure corona to generate high temperature of 2000-3000 ℃, cracking pollutant molecules of the waste gas into small molecules by utilizing high chemical activity, entering an oxidation chamber, and performing mild combustion by controlling compressed air as combustion air;
introducing the raw material waste gas treated by the oxidation chamber into a cyclone separator, and introducing SiO generated in the flue gas 2 And the fly ash is centrifugally separated to discharge residues, and the treated raw material waste gas is introduced into a filler washing tower;
the filler washing tower is internally provided with a filler layer and a spray layer, so that the introduced raw material waste gas is reversely in gas-liquid contact in the filler, acid-base neutralization reaction occurs, chemical absorption of circulating water on acid mist or alkali mist contained in the waste gas is promoted, and the waste gas flows out after being introduced into the mist removing layer.
The cyclone separator is connected with the circulating water tank, and is provided with the circulating water tank and connected with the spraying layer, wherein the circulating water tank is internally provided with a filler for filtering flue gas generated by the reaction and discharging dust-containing wastewater.
The method comprises the following steps of:
and arranging a porous water distributor on the packing layer, and uniformly spraying circulating water introduced by the circulating water pump into the packing.
The application has the beneficial effects that:
according to the laboratory waste gas treatment system and method, raw material waste gas from a laboratory is received by the plasma chamber, the raw material waste gas is introduced into the oxidation chamber, pollutant molecules of the waste gas are cracked into small molecules and enter the oxidation chamber, compressed air is controlled to serve as combustion air for mild combustion, flue gas of the oxidation chamber is cooled and filtered by the circulating water tank, the oxidation chamber is subjected to external jacket circulating water cooling, the treated raw material waste gas is introduced into the filler washing tower for treatment of a filler layer, a spray layer and a demisting layer, and the raw material waste gas flows to the demisting layer through the spray layer and flows out through a gas outlet of the filler washing tower, so that laboratory waste gas treatment is realized, small air quantity generated in the laboratory production process is subjected to local treatment, and the problems of combustion, explosion, corrosion leakage and the like caused by the waste gas in pipeline transportation are solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a front elevation of a laboratory exhaust treatment system according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a back side architecture of a laboratory exhaust treatment system according to an embodiment of the present application;
fig. 3 is a schematic flow diagram of a laboratory exhaust treatment method according to an embodiment of the present application.
In the figure:
1. raw material waste gas; 2. a plasma generator; 3. a plasma chamber; 4. an oxidation chamber; 5. a circulation water tank; 6. a cyclone separator; 7. a packed scrubber; 8. spraying a layer; 9. a defogging layer; 10. a gas outlet; 11. a controller; 12. a dosing box; 13. a dosing pump; 14. a circulating water pump; 15. a heat exchanger.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.
According to an embodiment of the present application, a laboratory exhaust treatment system is provided.
As shown in fig. 1-2, a laboratory exhaust treatment system according to an embodiment of the present application includes: a plasma chamber 3, an oxidation chamber 4, a circulating water tank 5 and a packing washing tower 7, wherein;
the input end of the plasma chamber 3 is used for receiving raw material waste gas 1 from a laboratory, and the output end of the plasma generator 2 is connected with the input end of the oxidation chamber 4;
the output end of the oxidation chamber 4 is connected with a circulating water tank 5, the circulating water tank 5 is used for cooling and filtering the flue gas of the oxidation chamber 4, and the oxidation chamber 4 is subjected to external jacket circulating water cooling;
a circulating water pump 14 is arranged in the circulating water tank 5, and the circulating water tank 5 is communicated with the filler washing tower 7;
the filler washing tower 7 is internally provided with a spraying layer 8 and a demisting layer 9, the spraying layer 8 is connected with a circulating water pump 14 through a spraying pipeline, and raw material waste gas 1 flows to the demisting layer 9 through the spraying layer 8 and flows out through a gas outlet 10 of the filler washing tower 7.
In addition, a plasma generator 2 is arranged in the plasma chamber 3, and a plurality of groups of air guide plates for inflow of raw material waste gas 1 are arranged at the top end of the plasma chamber 3.
According to the technical scheme, the air guide plates are preferably 6 groups, can be uniformly distributed along the circumferential direction, provide at most four different process waste gases to enter simultaneously, are respectively communicated with each air guide plate through the metal expansion joint and the three-way switching valve, waste gases can be switched into the plasma chamber 3 in stages according to the beat control of the process, and the material of the plasma chamber 3 can be 310s stainless steel.
In addition, for the plasma generator 2, the power supply adopts full-wave rectification and has constant current performance, and the energy density can reach as high as 10, and the plasma generator is composed of a coil, a cathode, an anode, a water cooling system and a compressed air system 5 ～10 6 The W/cm < 2 >, the outside of the plasma generator is connected with a cathode sleeve, the lower end of the cathode sleeve is provided with a cathode, the outside is respectively fixed with an insulating sleeve, a gas rotary ring is arranged in a cathode outer cavity, the upper side of the cathode outer cavity is connected with a softened water connecting pipe, the lower side of the cathode outer cavity is connected with an anode outer cavity, the anode outer cavity is provided with a lower end magnetic pole sleeve, the upper end and the lower end of the anode outer cavity are provided with magnetic rings, the inner side of each magnetic ring is fixedly provided with an anode below the cathode and connected with the anode outer cavity through an O-shaped sealing ring, and the lower side of the anode outer cavity is connected with an air guide disc.
In addition, a cyclone separator 6 is connected between the circulation tank 5 and the packed washing tower 7.
According to the technical scheme, a tail end smoke interface of a cyclone separator 6 is connected with a circulating water tank 5 at the lower end, and an air duct is led out from the middle and is connected with a filler washing tower 7.
In addition, the circulating water pump 14 is connected with the heat exchanger 15, and the heat exchanger 15 is connected with the outer jacket of the oxidation chamber 4 for circulating water cooling. A packing layer is arranged in the packing washing tower 7, the spraying layer 8 is positioned at the top end of the packing layer, and the circulating water pump 14 uniformly sprays circulating water into the packing layer through the porous water distributor.
According to the technical scheme, the circulating water tank 5 is internally provided with a filler for filtering flue gas generated by the reaction and discharging dust-containing wastewater at regular time.
Meanwhile, the circulating water tank 5 can be made of 316L stainless steel and is lined with a Teflon coating. The circulating water pump 14 is made of FRPP, and is cooled by the heat exchanger 15 and then is respectively pumped into inlets below the jacket of the oxidation chamber 4,
in addition, the packed scrubber 7 is automatically and periodically drained via an outlet solenoid valve. The jacket circulating cooling water outlet of the oxidation chamber 4 is connected with the return circulating water tank through a pipeline.
The heat exchanger 15 exchanges heat with softened water supplied from the outside, thereby cooling the temperature of the circulating water. The circulating water tank 5 is provided with a static pressure type liquid level meter, and softened water is respectively controlled to supplement water, drain water and acid-base chemical adding through a four-point type control and pH value analyzer. In addition, the upper half section of the circulating water pump 14 is provided with an observation window of an acrylic plate, so that water quality can be observed and manual periodic maintenance and cleaning can be performed.
In addition, the circulating water tank 5 is also connected with a dosing tank 12, the dosing tank 12 is connected with a dosing pump 13, and the dosing pump 13 is electrically connected with the controller 11.
According to the technical scheme, the acid or alkaline medicament sent from the outside can be stored in the dosing tank 12 according to the process requirements. The dosing tank 12 is made of 316L stainless steel lined with a Teflon coating.
Meanwhile, the softened water replenishing and dosing of the circulating water tank 5 and the compressed air pipeline of the oxidation chamber 4 are respectively provided with a flowmeter and a thermometer, and the relative valve opening can be displayed, recorded and adjusted. Controller 11 may employ the PLC1200 series control of siemens.
In addition, for the demisting layer 9, the flue gas can be dehydrated and demisted, so that the water in the subsequent pipeline is prevented from accumulating in the pipeline. The two sides of the middle section of the packing washing tower 7 are respectively connected with the top section and the bottom section in a sealing way by using clamping pieces and PTFE sealing pieces, and the packing washing tower can be disassembled and rotated by rotating the supporting mechanism so as to be disassembled, maintained and inspected and the packing replaced at regular intervals. The material of the filler washing tower 7 is flame retardant PP V2 grade.
According to another embodiment of the present application, a laboratory exhaust treatment method is provided.
As shown in fig. 3, the laboratory exhaust gas treatment method according to the embodiment of the present application, a method for a laboratory exhaust gas treatment system, comprises the steps of:
introducing raw material waste gas 1 of a laboratory into a plasma chamber 3 in advance, generating high temperature of 2000-3000 ℃ by high-voltage corona, cracking pollutant molecules of the waste gas into small molecules by utilizing high chemical activity, entering an oxidation chamber 4, and performing mild combustion by controlling compressed air as combustion air;
the raw material waste gas 1 treated by the oxidation chamber 4 is introduced into a cyclone separator 6, and SiO generated in the flue gas is introduced into the cyclone separator 2 And the fly ash is centrifugally separated to discharge residues, and the treated raw material waste gas 1 is introduced into a filler washing tower 7;
the filler washing tower 7 is internally provided with a filler layer and a spray layer 8, so that the introduced raw material waste gas 1 is reversely in gas-liquid contact in the filler, acid-base neutralization reaction occurs, chemical absorption of circulating water on acid mist or alkali mist contained in the waste gas is promoted, and the waste gas is introduced into the mist removal layer 9 and flows out.
The cyclone separator 6 is connected with the circulating water tank 5, and is provided with the circulating water tank 5 to be connected with the spraying layer 8, wherein the circulating water tank 5 is internally provided with a filler to filter the flue gas generated by the reaction, and the dust-containing wastewater is discharged.
Wherein, the reverse gas-liquid contact of the introduced raw material waste gas 1 in the filler comprises the following steps:
a porous water distributor is arranged on the packing layer, and the circulating water introduced by the circulating water pump 14 is uniformly sprayed into the packing.
In summary, by means of the above technical scheme of the present application, raw material waste gas 1 from a laboratory is received by the plasma chamber 3, raw material waste gas 1 is introduced into the oxidation chamber 4, pollutant molecules of the waste gas are cracked into small molecules, the small molecules enter the oxidation chamber 4, mild combustion is performed by controlling compressed air as combustion air, flue gas of the oxidation chamber 4 is cooled and filtered by the circulating water tank 5, and the oxidation chamber 4 is cooled by external jacket circulating water, the treated raw material waste gas 1 is introduced into the packing washing tower 7 to be treated by the packing layer, the spraying layer 8 and the demisting layer 9, and the raw material waste gas 1 flows to the demisting layer 8 and flows out through the gas outlet 10 of the packing washing tower 7, so that laboratory waste gas treatment is realized, small air volume generated in the laboratory production process is realized, combustible, explosive and corrosive gas is subjected to localized treatment, and the safety threat in the aspects of combustion, explosion, corrosion leakage and the like caused to operators in the process of pipeline transportation of the waste gas is solved.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and other embodiments of the present disclosure will readily occur to those skilled in the art upon consideration of the specification and disclosure at the examples. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (9)
1. A laboratory exhaust treatment system, comprising: a plasma chamber (3), an oxidation chamber (4), a circulating water tank (5) and a packing washing tower (7), wherein;
the input end of the plasma chamber (3) is used for receiving raw material waste gas (1) from a laboratory, and the output end of the plasma generator (2) is connected with the input end of the oxidation chamber (4);
the output end of the oxidation chamber (4) is connected with the circulating water tank (5), the circulating water tank (5) is used for cooling and filtering the flue gas of the oxidation chamber (4), and the oxidation chamber (4) is subjected to external jacket circulating water cooling;
a circulating water pump (14) is arranged in the circulating water tank (5), and the circulating water tank (5) is communicated with the filler washing tower (7);
the filler washing tower (7) is internally provided with a spraying layer (8) and a demisting layer (9), the spraying layer (8) is connected with the circulating water pump (14) through a spraying pipeline, and raw material waste gas (1) flows to the demisting layer (9) through the spraying layer (8) and flows out through a gas outlet (10) of the filler washing tower (7).
2. Laboratory exhaust treatment system according to claim 1, characterized in that a plasma generator (2) is arranged in the plasma chamber (3), and that several groups of gas guiding discs for inflow of raw exhaust gas (1) are arranged at the top end of the plasma chamber (3).
3. Laboratory exhaust gas treatment system according to claim 1, characterized in that a cyclone separator (6) is connected between the circulation tank (5) and the packed scrubber (7).
4. A laboratory exhaust treatment system according to claim 3, characterized in that the circulation tank (5) is further connected with a dosing tank (12), the dosing tank (12) is connected with a dosing pump (13), and the dosing pump (13) is electrically connected with the controller (11).
5. Laboratory exhaust gas treatment system according to claim 1, characterized in that the circulating water pump (14) is connected to a heat exchanger (15), which heat exchanger (15) is connected to the outer jacket of the oxidation chamber (4) for circulating water cooling.
6. Laboratory exhaust treatment system according to claim 1, characterized in that a packing layer is arranged in the packing washing tower (7), the spray layer (8) is positioned at the top end of the packing layer, and the circulating water pump (14) sprays circulating water into the packing layer uniformly through a porous water distributor.
7. A laboratory exhaust gas treatment method for a laboratory exhaust gas treatment system according to any one of claims 1 to 6, comprising the steps of:
introducing raw material waste gas (1) of a laboratory into a plasma chamber (3) in advance, generating high temperature of 2000-3000 ℃ by high-voltage corona, cracking pollutant molecules of the waste gas into small molecules by utilizing high chemical activity, entering an oxidation chamber (4), and performing mild combustion by controlling compressed air as combustion air;
introducing the raw material waste gas (1) treated by the oxidation chamber (4) into a cyclone separator (6), and introducing SiO generated in the flue gas 2 And the fly ash is centrifugally separated to discharge residues, and the treated raw material waste gas (1) is introduced into a filler washing tower (7);
the filler washing tower (7) is internally provided with a filler layer and a spray layer (8), so that the introduced raw material waste gas (1) is reversely in gas-liquid contact in the filler, acid-base neutralization reaction occurs, chemical absorption of circulating water on acid mist or alkali mist contained in the waste gas is promoted, and the waste gas flows out after being introduced into the mist removing layer (9).
8. The laboratory waste gas treatment method according to claim 7, wherein the cyclone separator (6) is connected with the circulating water tank (5), and the circulating water tank (5) is configured to be connected with the spraying layer (8), wherein the circulating water tank (5) is configured with a filler to filter the flue gas generated by the reaction, and the dust-containing waste water is discharged.
9. A laboratory exhaust gas treatment method according to claim 8, characterized in that the reverse gas-liquid contact of the introduced raw exhaust gas (1) in the packing comprises the following steps:
and arranging a porous water distributor on the packing layer, and uniformly spraying the circulating water introduced by the circulating water pump (14) into the packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311189497.1A CN117138543A (en) | 2023-09-15 | 2023-09-15 | Laboratory waste gas treatment system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311189497.1A CN117138543A (en) | 2023-09-15 | 2023-09-15 | Laboratory waste gas treatment system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821373A (en) * | 2019-03-11 | 2019-05-31 | 中南大学 | A kind of plasma emission-control equipment and method |
| CN210079133U (en) * | 2019-04-16 | 2020-02-18 | 南通润泽环境工程技术有限公司 | Sludge waste gas VOCs processing apparatus |
| KR20230024457A (en) * | 2021-08-11 | 2023-02-21 | 주식회사 한국산업기술원 | Equipment, material, object, product, work, cleanup, treatment, facility, structure, drone, 3D printer, mobility, metaverse |
| US20230080243A1 (en) * | 2020-06-02 | 2023-03-16 | Tamara Renee WEBB | Method for processing waste using low-temperature plasma and device therefor |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821373A (en) * | 2019-03-11 | 2019-05-31 | 中南大学 | A kind of plasma emission-control equipment and method |
| CN210079133U (en) * | 2019-04-16 | 2020-02-18 | 南通润泽环境工程技术有限公司 | Sludge waste gas VOCs processing apparatus |
| US20230080243A1 (en) * | 2020-06-02 | 2023-03-16 | Tamara Renee WEBB | Method for processing waste using low-temperature plasma and device therefor |
| KR20230024457A (en) * | 2021-08-11 | 2023-02-21 | 주식회사 한국산업기술원 | Equipment, material, object, product, work, cleanup, treatment, facility, structure, drone, 3D printer, mobility, metaverse |
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