CN112791555A - Waste gas treatment device - Google Patents
Waste gas treatment device Download PDFInfo
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- CN112791555A CN112791555A CN202110135021.4A CN202110135021A CN112791555A CN 112791555 A CN112791555 A CN 112791555A CN 202110135021 A CN202110135021 A CN 202110135021A CN 112791555 A CN112791555 A CN 112791555A
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- 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
- B01D53/007—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 irradiation
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- 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
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- 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
- B01D53/76—Gas phase processes, e.g. by using aerosols
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
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- 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
- B01D2259/804—UV light
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Abstract
The invention discloses a waste gas treatment device, comprising: a washing tower, wherein a washing liquid nozzle, a recovery port and a demister are arranged in the washing tower, an air inlet of the washing tower is connected with an exhaust device through a pipeline, an air outlet of the washing tower is connected with an air inlet of a photoelectric decomposer, a UV ultraviolet lamp tube is arranged in the photoelectric decomposer, the ultraviolet wavelength of the UV ultraviolet lamp tube is 175-330nm, and the waste gas treatment amount of each UV ultraviolet lamp tube is 200m3The power consumption of each UV lamp tube is 60w, the air outlet of the photoelectric decomposer is connected with the air inlet of the activated carbon adsorption tower, and the air outlet of the activated carbon adsorption tower is connected with the air inlet of the exhaust fanThe air outlet of the exhaust fan is connected with the chimney. The device breaks through the characteristic of single treatment waste gas in the past, and equipment treatment efficiency promotes greatly, has very big spreading value.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment device.
Background
With the continuous development of the industrial level, the environmental protection has reached a considerable level, a large amount of waste gas is often generated in the daily production of various industries, and in the prior art, a single waste gas treatment device such as a washing tower, an activated carbon adsorption device, a magnetic induction UV photoelectric decomposition device and the like is usually adopted to treat the waste gas and then the treated waste gas is discharged into the air, so that the treatment mode is single and the treatment efficiency is low.
Disclosure of Invention
The invention aims to provide a waste gas treatment device to solve the technical problems of single waste gas treatment mode and low treatment efficiency in the prior art.
To achieve the above object, the present invention provides an exhaust gas treatment device comprising: the washing tower is internally provided with a washing liquid nozzle, a recovery port and a demister, an air inlet of the washing tower is connected with an exhaust device through a pipeline, an air outlet of the washing tower is connected with an air inlet of a photoelectric decomposer, the photoelectric decomposer is internally provided with UV (ultraviolet) lamp tubes, the ultraviolet wavelengths of the UV lamp tubes are 175-330nm, and the waste gas treatment amount of each UV lamp tube is 200m3And h, the power consumption of each UV lamp tube is 60w, the air outlet of the photoelectric decomposer is connected with the air inlet of the activated carbon adsorption tower, the air outlet of the activated carbon adsorption tower is connected with the air inlet of the exhaust fan, and the air outlet of the exhaust fan is connected with the chimney.
Furthermore, an adsorption layer is arranged in the washing tower.
Further, the air inlet of the washing tower is positioned at the middle lower part of the washing tower.
Further, a photoelectric deodorization device is arranged in the photoelectric decomposer.
Furthermore, an activated carbon adsorption wall is arranged in the activated carbon adsorption tower.
Further, a high-pressure induced draft fan is arranged in the chimney.
Further, the height of the chimney is 25 meters.
Compared with the prior art, the invention has the following beneficial effects: according to the waste gas treatment device, the washing tower of the waste gas treatment equipment, the activated carbon adsorption equipment and the magnetic induction UV photoelectric decomposition equipment are effectively combined together, the characteristic of single waste gas treatment in the past is broken through, the treatment efficiency of the equipment is greatly improved, and the popularization value is high.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 2 is a process flow diagram of a preferred embodiment of the present invention;
description of reference numerals: 1-a washing tower, 2-a photoelectric decomposer, 3-an activated carbon adsorption tower, 4-an exhaust fan, 5-a chimney, 6-a washing liquid nozzle, 7-a recovery port, 8-an adsorption layer and 9-a demister.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1 and 2, according to a preferred embodiment of the present invention, there is provided an exhaust gas treatment device including: the device comprises a washing tower 1, wherein a washing liquid nozzle 6, a recovery port 7 and a demister 9 are arranged in the washing tower 1, an air inlet of the washing tower 1 is connected with an exhaust device through a pipeline, an air outlet of the washing tower 1 is connected with an air inlet of a photoelectric decomposer 2, a UV ultraviolet lamp tube is arranged in the photoelectric decomposer 2, the ultraviolet wavelength of the UV ultraviolet lamp tube is 175-plus-330 nm, the waste gas treatment amount of each UV ultraviolet lamp tube is 200m3/h, the power consumption of each UV ultraviolet lamp tube is 60w, an air outlet of the photoelectric decomposer 2 is connected with an air inlet of an activated carbon adsorption tower 3, an air outlet of the activated carbon adsorption tower 3 is connected with an air inlet of an exhaust fan 4, an air outlet of the exhaust fan 4 is connected with a chimney 5, and an adsorption layer 8 is. The process principle is as follows: organic waste gas discharged by the equipment is intensively conveyed to a washing tower 1 through a wind pipe by fixed-point air draft, and is purified after being washed and absorbed; after waste gas generated in the production is guided into the waste gas washing tower 1 through the collecting system and passes through the adsorption layer 8, washing liquid is uniformly sprayed on the surface of a filling material of the adsorption layer 8 from a spray nozzle to keep moist; meanwhile, the waste gas and the cleaning solution contact each other in the fully wetted filling layer, and the pollutants in the waste gas are absorbed in the cleaning solution by physical and chemical absorption, so as to achieve the purpose of removing the pollutants; the moisture-laden gas must then be passed through a mist eliminator 9 to remove excess moisture; the gas cleaned and dewatered by the washing tower 1 passes through the photoelectric decomposer 2 and carries out a synergistic decomposition oxidation reaction on the organic gas by a purifying device by using high-energy UV light beams and ozone, so that the organic gas is degraded and converted into low molecular compounds, water and carbon dioxide; finally, the organic gas enters an activated carbon adsorption tower 3, the organic gas is adsorbed by activated carbon when passing through an activated carbon wall, the clean gas after washing, ozone oxidation and activated carbon adsorption can be directly discharged into the atmosphere, and the removed water is simultaneously led back to a circulating washing liquid system for recycling; the purpose of removing pollutants is achieved; the method has the purification efficiency of over 97 percent and greatly improves the atmospheric environment.
The device does not need to add any chemical substances: the malodorous gas is deodorized, decomposed and purified by the equipment only by arranging a corresponding exhaust pipeline and exhaust power without adding any chemical substances to participate in chemical reaction; the device can adapt to the purification treatment of high and low concentrations, large gas amount, different organic waste gases and acidic gas substances, can continuously work 24 hours a day, and has stable and reliable operation; the operation cost is low: the equipment has no mechanical action and no noise, does not need special management and daily maintenance, only needs periodic inspection, has low energy consumption, has extremely low wind resistance of less than 60pa, and can save a large amount of energy consumption of exhaust power; the occupied area of the equipment is small: the dead weight is light: is suitable for special conditions such as compact arrangement, narrow site and the like; the material is manufactured by adopting high-quality imported materials: waterproof, fireproof, explosion-proof and corrosion-proof, and has long service life; the combined treatment equipment adopts two operation modes of local control mode and remote control mode, i.e. under the local control mode, the start-stop of the equipment is manually controlled, and under the remote control modeThe device can be controlled to start and stop by the upper computer, and meanwhile, the running state of the device can be displayed on the upper computer. An interface adaptive to a control room is provided, local and remote control can be realized, and state and alarm signals can be transmitted; adopts advanced oxidation technology, breaks through the reaction limitation of a single system, and has two oxidants-O with strong oxidation capability in the whole reaction system3And OH participates in the reaction, so that the treatment effect is better, the mineralization degree of the waste gas is higher, harmless emission can be realized, and no secondary pollution is caused.
Washing tower equipment principle: a counter-flow washing tower washing method is a high-efficiency and energy-saving treatment method, and the main principle is that waste gas passes through a water film treatment process of a packing layer of a washing tower from bottom to top, the packing passes through the bottom of the packing layer, hydrophilic gas molecules flush dust particles in the waste gas to a water tank along with water flow in the water film attached to the surface of the packing according to the hydrophilicity of partial gas molecules, and acidic gas molecules neutralize and react with alkali in the water to generate salt and water which are not easy to volatilize; an automatic control system in the water tank automatically detects the height of the water level, and when the water level is low, the control system automatically supplements water; the aqueous solution PH value in the water tank after the saturation equals about 7, and regular manual inspection water tank solution PH value when aqueous solution PH value equals about 7, needs the manual work to open the drain valve this moment and trades water. The pipe for discharging the waste water is connected to a waste water treatment system of a noble company, and the waste water is treated by the noble company in a centralized way. Meanwhile, the water tank structure is specially provided with a sewage outlet, dust-containing particles are concentrated at a specific position in the water tank after being deposited for a period of time, and sludge in the water tank is manually removed periodically to avoid blocking a pipeline. The packed tower has the advantages of strong purification and removal capacity, simple device, low energy consumption, no influence of winter cold climate, low operation and maintenance cost, strong adaptability to high-concentration gas which has large change range of waste gas concentration and is difficult to treat by a washing method, and the like, and is a high-efficiency and low-consumption treatment method. In practical engineering applications, the countercurrent scrubbing tower process is widely used.
Photoelectric resolver principle: in the ultraviolet photolysis catalytic oxidation deodorization equipment, high-energy ultraviolet beam, air and TiO2Ozone and OH (hydroxyl radical) generated by the reaction carry out a synergistic decomposition oxidation reaction on malodorous gas, so that macromolecular malodorous gas is broken in a chain structure under the action of ultraviolet rays, and malodorous substances are converted into odorless micromolecular compounds or completely mineralized to generate water and CO2And after reaching the standard, the waste gas is exhausted into the atmosphere through an exhaust pipe, and the whole decomposition and oxidation process is completed within 1 second.
(1) Generation of ozone:
the high-energy ultraviolet light beam is used to generate a large amount of free electrons in the air, and the electrons can be obtained by oxygen to form negative oxygen ions (O)3-) negative oxygen ions are unstable and easily lose an electron to become active oxygen (ozone), ozone is a high-grade oxidant, and can not only oxidize and decompose organic and inorganic substances, but also react with ozone to mainly stink hydrogen sulfide, ammonia, methyl mercaptan, hydrocarbon compounds and the like, and the stink gases are decomposed into micromolecular substances from macromolecular substances until being mineralized under the action of ozone.
The ozone generation process is shown as follows:
(2) production of OH (hydroxyl radical):
the device can simultaneously utilize ultraviolet light beams and nano-scale TiO2The action of (2) generates OH, and ozone dissolved in water can also generate OH.
OH (hydroxyl radical) is one of the most active oxidants, has oxidation capacity obviously higher than that of a common oxidant, reacts with malodorous gas, and has higher mineralization degree. The oxidation potentials of several oxidants are compared in the following table:
| oxidizing agent | Reaction of | Oxidation potential/V |
| ·OH | ·OH+H++e-→H2O | 3.06 |
| O3 | O3+2H++2e-→O2+H2O | 2.07 |
| H2O2 | H2O2+2H++2e-→2H2O | 1.77 |
| HClO | HClO+H++2e-→Cl-+H2O | 1.63 |
| Cl2 | Cl2+2e-→2Cl- | 1.36 |
(3) And (3) disinfection and sterilization: the molecular bond of bacteria in malodorous gas is cracked by high-energy UV light beam to destroy the nucleic acid (DNA) of bacteria, and then OH and O are passed3Oxidation reaction is carried out to thoroughly achieve deodorization and fine killingThe purpose of the bacteria is.
(4) High-efficiency deodorization: the ultraviolet photolysis catalytic oxidation deodorization equipment can efficiently remove main pollutants such as Volatile Organic Compounds (VOC), inorganic matters, hydrogen sulfide, ammonia gas, thiols and the like and various malodorous pollutants, the deodorization efficiency can reach more than 99 percent at most, and the deodorization effect greatly exceeds the emission standard of the malodorous pollutants (GB14554-93) issued by the state in 1993. Nine major types of 114 pollutants published by the United states environmental protection agency are proved to be treated by photolysis catalytic oxidation, and even atomic organic matters such as halogenated hydrocarbon, fuel, nitrogen-containing organic matters and organophosphorus insecticide have good removal effect (TiO)2The life of the catalyst is infinitely extended without replacement).
(5) Photoelectric resolver principle: the magnetic induction electrodeless lamp (UV ultraviolet lamp tube) which is independently developed is adopted: ultraviolet wavelength 175-: phi 15mm x 800mm, each processing waste gas amount is 200m3/h, and each power consumption amount is 60 w.
(6) The electrodeless discharge light source is a new generation gas discharge light source, completely breaks through the light emitting mechanism and the design concept of the traditional light source on the light emitting mechanism, and becomes a revolution in the development history of the gas discharge light source. Because the light source does not have electrodes, the blackening phenomenon caused by the problems of electrode oxidation, loss and sealing of other discharge light sources can not be generated, the light source is rarely limited by working voltage (no longer only 220V, but any voltage can be used), working frequency and working current, great progress is made on various qualities such as light efficiency, light color, service life, shape, filling materials and the like, and meanwhile, the electrodeless light source also has the advantages of easy shape change, quick starting, stable light emission, high light efficiency and the like, so that the light source is increasingly paid attention to by people.
(7) The filling materials in the magnetic induction electrodeless ultraviolet lamp are mainly metallic mercury and some inert gases, wherein mercury vapor is the working gas in the lamp, and the inert gases are the starting gases. The discharge frequency is 2450M Hz, so that the high-frequency alternating magnetic field induces an alternating electric field along the circumferential direction in the lamp tube, the charged ions perform alternating accelerated motion under the action of the vortex electric field to generate ionization, part of electrons hit the tube wall, and a radial constant electric field is formed near the tube wall. Under the combined action of the electric field and the vortex electric field, electrons do circular motion and continuously collide with ground state atoms, so that gas atoms are excited and ionized.
Principle of activated carbon adsorption column: the organic gas is collected in a centralized manner, then conveyed to waste gas treatment equipment through a pipeline, enters an activated carbon tower after two-stage alkaline washing, flows into an activated carbon filter layer along with the gas flow direction due to the fact that the wind speed is reduced instantly when the sectional area is suddenly increased when the organic gas enters the tower, the organic gas which is not purified by a washing tower flows into the activated carbon filter layer, the organic gas is absorbed into the carbon by the activated carbon when the organic gas enters the carbon layer, clean air passes through the carbon layer and enters a gas outlet bin, and the gas is absorbed by the two-stage activated carbon and then is discharged into the atmosphere. The active carbon adsorption tower is a dry waste gas treatment device. Consists of a box body and an adsorption unit filled in the box body. The adsorption tower is divided into a plurality of specifications according to the number and the air quantity of adsorption units, and different fillers are selected for the activated carbon adsorption tower to treat a plurality of different waste gases, wherein the waste gases mainly comprise three types, namely acid waste gas, acid mist, alkaline waste gas, organic waste gas and odor (benzene, phenols, alcohols, ethers and tinctures);
preferably, the gas inlet of the scrubber 1 is located at the middle-lower part of the scrubber 1, so that the gas enters from the bottom of the scrubber 1 and is discharged from the top.
Preferably, the photoelectric decomposer 2 is internally provided with a photoelectric deodorization device, and in the ultraviolet photolysis catalytic oxidation deodorization device, a high-energy ultraviolet beam, air and TiO are2Ozone and OH (hydroxyl radical) generated by the reaction carry out a synergistic decomposition oxidation reaction on malodorous gas, so that macromolecular malodorous gas is broken in a chain structure under the action of ultraviolet rays, and malodorous substances are converted into odorless micromolecular compounds or completely mineralized to generate water and CO2And after reaching the standard, the waste gas is exhausted into the atmosphere through an exhaust pipe, and the whole decomposition and oxidation process is completed within 1 second.
Preferably, an activated carbon adsorption wall is arranged in the activated carbon adsorption tower 3, so that a better purification purpose is achieved.
Preferably, a high-pressure induced draft fan is arranged in the chimney 5, and the height of the chimney 5 is 25 meters.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the device has broken the single characteristics of handling waste gas in the past through the effectual combination of exhaust-gas treatment equipment scrubbing tower, active carbon adsorption equipment and magnetism sense UV photoelectrolysis equipment together, and equipment treatment efficiency promotes greatly, has very big spreading value.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (7)
1. An exhaust gas treatment device, comprising: the device comprises a washing tower (1), wherein a washing liquid nozzle (6), a recovery port (7) and a demister (9) are arranged in the washing tower (1), an air inlet of the washing tower (1) is connected with an exhaust device through a pipeline, an air outlet of the washing tower (1) is connected with an air inlet of a photoelectric decomposer (2), a UV ultraviolet lamp tube is arranged in the photoelectric decomposer (2), the ultraviolet wavelength of the UV ultraviolet lamp tube is 175-330nm, and the waste gas treatment amount of each UV ultraviolet lamp tube is 200m3The power consumption of the UV ultraviolet lamp tube is 60w, the gas outlet of the photoelectric decomposer (2) is connected with the gas inlet of the activated carbon adsorption tower (3), the gas outlet of the activated carbon adsorption tower (3) is connected with the gas inlet of the exhaust fan (4), and the gas outlet of the exhaust fan (4) is connected with the chimney (5).
2. An exhaust gas treatment device according to claim 1, wherein: an adsorption layer (8) is arranged in the washing tower (1).
3. An exhaust gas treatment device according to claim 1, wherein: the air inlet of the washing tower (1) is positioned at the middle lower part of the washing tower (1).
4. An exhaust gas treatment device according to claim 1, wherein: and a photoelectric deodorization device is arranged in the photoelectric decomposer (2).
5. An exhaust gas treatment device according to claim 1, wherein: an activated carbon adsorption wall is arranged in the activated carbon adsorption tower (3).
6. An exhaust gas treatment device according to claim 1, wherein: and a high-pressure induced draft fan is arranged in the chimney (5).
7. An exhaust gas treatment device according to claim 1, wherein: the height of the chimney (5) is 25 meters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110135021.4A CN112791555A (en) | 2021-01-29 | 2021-01-29 | Waste gas treatment device |
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| CN202110135021.4A CN112791555A (en) | 2021-01-29 | 2021-01-29 | Waste gas treatment device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210390A (en) * | 2021-05-25 | 2021-08-06 | 湖北天泰辐照股份有限公司 | Waste gas treatment device is used in cotton production of irradiation crosslinked polyethylene bubble |
| CN114028906A (en) * | 2021-11-26 | 2022-02-11 | 西安交通大学 | Organic waste gas coupling formula integration processing apparatus |
-
2021
- 2021-01-29 CN CN202110135021.4A patent/CN112791555A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210390A (en) * | 2021-05-25 | 2021-08-06 | 湖北天泰辐照股份有限公司 | Waste gas treatment device is used in cotton production of irradiation crosslinked polyethylene bubble |
| CN114028906A (en) * | 2021-11-26 | 2022-02-11 | 西安交通大学 | Organic waste gas coupling formula integration processing apparatus |
| CN114028906B (en) * | 2021-11-26 | 2023-01-03 | 西安交通大学 | Organic waste gas coupling formula integration processing apparatus |
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