CN114534464A - Treatment process of unorganized organic waste gas - Google Patents
Treatment process of unorganized organic waste gas Download PDFInfo
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- CN114534464A CN114534464A CN202210309280.9A CN202210309280A CN114534464A CN 114534464 A CN114534464 A CN 114534464A CN 202210309280 A CN202210309280 A CN 202210309280A CN 114534464 A CN114534464 A CN 114534464A
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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
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
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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
- B01D53/75—Multi-step processes
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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
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
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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
- B01D53/96—Regeneration, reactivation or recycling of reactants
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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
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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
- B01D2251/106—Peroxides
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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
- B01D2251/108—Halogens or halogen compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention belongs to the technical field related to waste gas treatment, and provides a treatment process of unorganized organic waste gas, which comprises waste gas trapping, pretreatment and adsorption and desorption; the method comprises the following steps that waste gas is collected and concentrated, a plurality of waste gas collecting points are arranged at intervals, a wind collecting machine is arranged in each waste gas collecting point, the wind collecting machine collects air at the waste gas collecting points into a washing tower uniformly, a sprayer at the top of the washing tower sprays and washes organic waste gas entering the washing tower, sprayed washing water is collected through a water collecting tank at the bottom of the washing tower, an oxidant in the water collecting tank is supplemented through an oxidant supplementing tank, and washing liquid filtered in the water collecting tank is sent to the sprayer through a circulating pump to be circularly washed; the gas in a plurality of exhaust gas trapping points can be uniformly collected, then organic matters in the organic exhaust gas are separated from the gas, and the organic matters are catalyzed into harmless carbon dioxide and water, so that the concentration of the discharged organic exhaust gas meets the emission standard.
Description
Technical Field
The invention belongs to the technical field related to waste gas treatment, and particularly relates to a treatment process of unorganized organic waste gas.
Background
In the industrial production process, a large amount of waste gas containing Volatile Organic Compounds (VOCs) is generated and is generally directly treated by a waste gas treatment system, but the organic waste gas can also be dissipated in an open working place or in an unorganized manner through door and window gaps, ventilation openings and the like.
Since the dissipation point of the organic waste gas is discrete, the organic waste gas is not treated in the prior art, thereby causing the problem of affecting the surrounding air
Disclosure of Invention
The embodiment of the invention aims to provide a treatment process of unstructured organic waste gas, and aims to solve the problem that surrounding air is influenced because the unstructured organic waste gas is not treated in the prior art.
The embodiment of the invention is realized by a treatment process of the unorganized organic waste gas, which comprises waste gas trapping, pretreatment and adsorption and desorption;
waste gas capture: a plurality of waste gas trapping points are arranged at intervals, a wind catching machine is arranged in each waste gas trapping point, and the wind catching machines catch air at the waste gas trapping points into the washing tower uniformly;
pretreatment: the sprayer at the top of the washing tower sprays and washes the organic waste gas entering the washing tower, the sprayed washing water is collected by a water collecting tank at the bottom of the washing tower, the oxidant in the water collecting tank is supplemented by an oxidant supplementing tank, and the washing liquid filtered in the water collecting tank is sent to the sprayer for circular washing by a circulating pump;
adsorption and desorption: organic waste gas washed by the washing tower is sent into the catalytic chamber, organic matters in the organic waste gas are adsorbed by the adsorption bed, the gas is heated by the heating device in the catalytic chamber and then burns, high-temperature gas obtained after heat exchange of carbon dioxide and water generated after combustion and decomposition and heat generated by combustion and decomposition catalyze the organic matters on the adsorption bed, the catalyzed organic matters are catalytically burnt and decomposed into carbon dioxide, water and heat in the catalytic chamber, and the adsorbed gas and redundant carbon dioxide in the catalytic process are discharged through the air duct.
Preferably, the waste gas trapping points are provided with transverse wind shields at two sides of the wind catching machine.
Preferably, the process further comprises the step of installing an air volume adjusting valve for adjusting the air volume of the air capture machine on the air capture machine.
Preferably, the process further comprises the step of arranging a concentration monitor at each waste gas trapping point to monitor the concentration of the organic waste gas, and when the concentration of the organic waste gas exceeds a threshold value, the air quantity regulating valve increases the air quantity of the air trapping fan.
Preferably, the process further comprises periodically detecting the concentration of the oxidant in the water collection tank, and when the concentration of the oxidant in the water collection tank is lower than a set value, the oxidant replenishing tank replenishes the oxidant into the water collection tank.
Preferably, the process further comprises the step of arranging a washing pipe between the washing tower and the plurality of air capturing machines, mixing the organic waste gas with the oxidizing washing liquid in the washing pipe and then feeding the organic waste gas into the washing tower, and replenishing the oxidizing washing liquid in the washing pipe through an oxidizing washing liquid replenishing tank.
Preferably, the oxidant in the oxidation washing liquid and the oxidant in the oxidant replenishing tank are one or a mixture of hydrogen peroxide, fenton oxidant, chlorine dioxide, sodium hypochlorite and potassium permanganate in any proportion.
The treatment process of the unorganized organic waste gas provided by the embodiment of the invention can uniformly collect the gas in a plurality of waste gas trapping points, then separate the organic matters from the gas in the organic waste gas through the processes of spray pretreatment and catalytic adsorption and desorption, and catalyze the organic matters into harmless carbon dioxide and water, so that the concentration of the discharged organic waste gas meets the emission standard, and the problem that the unorganized organic waste gas is not treated in the prior art, thereby influencing the surrounding air is solved.
Drawings
Fig. 1 is a schematic flow chart of a process for treating an organic waste gas according to an embodiment of the present invention.
In the drawings: 1. an exhaust gas trapping point; 2. a concentration monitor; 3. a wind catching machine; 4. an air volume adjusting valve; 5. a water collection tank; 6. a washing tower; 7. a catalyst chamber; 8. a heat exchanger; 9. an adsorption bed; 10. a heating device; 11. a blower; 12. an air duct; 14. an oxidant make-up tank; 15. a circulation pump; 16. an oxidation cleaning solution replenishing tank; 17. and washing the pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to fig. 1 and an embodiment. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The treatment process of the unorganized organic waste gas provided by the embodiment comprises waste gas trapping, pretreatment and adsorption and desorption;
waste gas capture: waste gas collecting points 1 are arranged near doors and windows of a factory building or at ventilation openings, a wind catching machine 3 is arranged in each waste gas collecting point 1, the wind quantity of the wind catching machine 3 is adjusted through a wind quantity adjusting valve 4, the wind quantity adjusting valve 4 adjusts the wind quantity of the wind catching machine 3 according to the concentration of organic waste gas detected by a concentration monitor, and transverse wind shields are arranged on two sides of the wind catching machine 3 to prevent transverse wind, and the wind catching machine 3 uniformly catches the air at the waste gas collecting points 1 into a washing pipe 17;
pretreatment: organic waste gas is mixed with a Fenton oxidant and washing liquid in a washing pipe 17 and then enters a washing tower 6, wherein the Fenton oxidant and the washing liquid in the washing pipe 17 are supplemented by an oxidation washing liquid supplementing tank 16, the Fenton oxidant and the washing liquid entering the washing tower 6 fall into a water collecting tank 5 for filtration and collection, the organic waste gas is sprayed and washed by a sprayer at the top of the washing tower 6, impurities in the organic waste gas are further separated from gas, sprayed washing water is collected by a water collecting tank 5 at the bottom of the washing tower 6, the concentration of the Fenton oxidant in the water collecting tank 5 is periodically detected, when the concentration of the Fenton oxidant in the water collecting tank 5 is lower than a set value, the Fenton oxidant is supplemented into the water collecting tank 5 by an oxidant supplementing tank 14, and the filtered washing liquid in the water collecting tank 5 is sent to the sprayer through a washing liquid circulating pump 15 for circular washing;
adsorption and desorption: organic waste gas washed by the washing tower 6 is sent into the catalytic chamber 7, organic matters in the organic waste gas are adsorbed by the adsorption bed 9, the gas is heated and combusted by the heating device 10 in the catalytic chamber 7, the organic matters on the adsorption bed 9 are catalyzed by high-temperature gas obtained after heat exchange of carbon dioxide and water generated after combustion and decomposition by the heat exchanger 8 and heat generated by combustion and decomposition, the catalyzed organic matters are catalytically combusted and decomposed into carbon dioxide, water and heat in the catalytic chamber 7, and redundant carbon dioxide in the catalytic process is discharged from the air duct 12 by the air feeder 11.
In the present embodiment, concentration monitors are provided at each exhaust gas trapping point 1 and at the wind tunnel 12 to detect the concentration of the organic exhaust gas.
Example 2
The embodiment provides a treatment process of an unorganized organic waste gas, which comprises waste gas capture and pretreatment;
waste gas capture: waste gas catching points 1 are arranged near doors and windows of a factory building or at ventilation openings, a wind catching machine 3 is arranged in each waste gas catching point 1, the wind quantity of the wind catching machine 3 is adjusted through a wind quantity adjusting valve 4, transverse wind shields are arranged on two sides of the wind catching machine 3 to prevent transverse wind, and the wind catching machine 3 uniformly catches the air at the waste gas catching points 1 into a washing pipe 17;
pretreatment: the organic waste gas is mixed with the fenton oxidizer and the washing liquid in the washing pipe 17 and then enters the washing tower 6, wherein the Fenton oxidant and the washing liquid in the washing pipe 17 are supplemented by the oxidation washing liquid supplementing tank 16, the Fenton oxidant and the washing liquid entering the washing tower 6 fall into the water collecting tank 5 for filtration and collection, the organic waste gas is sprayed and washed by a sprayer at the top of the washing tower 6, impurities in the organic waste gas are further separated from the gas, the sprayed washing water is collected by a water collecting tank 5 at the bottom of the washing tower 6, the concentration of the Fenton oxidant in the water collecting tank 5 is periodically detected, when the concentration of the fenton oxidizing agent in the water collection tank 5 is lower than a set value, the oxidizing agent replenishing tank 14 replenishes the fenton oxidizing agent in the water collection tank 5, the washing liquid filtered in the water collection tank 5 is sent to the sprayer through the circulating pump 15 for circular washing, and the gas after washing and purification is discharged from the air duct 12 through the blower 11.
In the present embodiment, concentration monitors are provided at each exhaust gas trapping point 1 and at the wind tunnel 12 to detect the concentration of the organic exhaust gas.
Example 3
In this embodiment, as a comparative example, in the exhaust gas trapping point 1 provided near each factory building door or window or in the ventilation opening, the flow of the peripheral air is promoted by providing the air trap 3, the concentration at the detection point is reduced, and then the concentration of the organic exhaust gas is detected by the concentration monitor.
It should be noted that, in the present invention, the concentration of the fenton oxidizer in the header tank 5 may be checked once a month or 7 times; wherein the concentration of the Fenton oxidant is 30% by mass.
The initial organic waste gas concentrations provided in the three examples were all 50mg/m3After 1 hour of treatment in each of the three examples, the average values of the organic waste gas concentrations detected by the concentration monitors in the three examples were compared, and the detection standard of the organic waste gas concentration was GB 37822-2019, and the comparative data were obtained as shown in the following table:
| examples | Exhaust gas concentration (mg/m)3) | Emission concentration limit (mg/m)3) |
| Example 1 | 15 | 30 |
| Example 2 | 23 | 30 |
| Example 3 | 45 | 30 |
In summary, the concentration values of the organic waste gas detected after the treatment processes of examples 1 and 2 are lower than the emission requirement, while example 3 does not reach the emission standard, wherein the concentration value of the organic waste gas is the lowest after the treatment process of example 1.
In embodiment 1, after spraying, the organic waste gas is further purified by the adsorption and desorption effect, wherein the organic substances in the organic waste gas are adsorbed on the adsorption bed 9, the obtained clean gas is discharged through the air duct 12, the heating device 10 heats the inside of the catalytic chamber 7, so that the organic substances run out from the adsorption bed 9 and are combusted in the catalytic chamber 7 to generate carbon dioxide, water and heat, the released energy enters the adsorption bed 9 to promote the desorption of the inorganic substances, at this time, the heating device 10 can stop working and circulate until the organic substances are completely separated from the inside of the adsorption bed 9, and then the organic substances are completely decomposed in the catalytic chamber 7, the adsorption bed 9 obtains the adsorption capacity again, the organic substances are subjected to catalytic decomposition treatment, and the concentration of the organic waste gas discharged from the air duct 12 is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A process for treating an organic waste gas without structure, the process comprising:
the method comprises the following steps of (1) collecting waste gas, wherein a plurality of waste gas collecting points (1) are arranged at intervals, a wind catching machine (3) is arranged in each waste gas collecting point (1), and the wind catching machine (3) catches air at the waste gas collecting points (1) into a washing tower (6) uniformly;
pretreating, namely spraying and washing the organic waste gas entering the washing tower (6) by a sprayer at the top of the washing tower (6), collecting sprayed washing water by a water collecting tank (5) at the bottom of the washing tower (6), supplementing an oxidant in the water collecting tank (5) by an oxidant supplementing tank (14), and sending the washing liquid filtered in the water collecting tank (5) to the sprayer for circular washing by a circulating pump (15);
adsorption and desorption, the organic waste gas washed by the washing tower (6) is sent into the catalytic chamber (7), the organic matters in the organic waste gas are adsorbed by the adsorption bed (9), the gas is heated by the heating device (10) in the catalytic chamber (7) and then combusted, the organic matters on the adsorption bed (9) are catalyzed by high-temperature gas obtained after heat exchange of carbon dioxide and water generated after combustion and decomposition and heat generated by combustion and decomposition, the catalyzed organic matters are catalytically combusted and decomposed into carbon dioxide, water and heat in the catalytic chamber (7), and the adsorbed gas and redundant carbon dioxide in the catalysis process are discharged through the air duct (12).
2. The process for treating the unorganized organic waste gas according to claim 1, wherein the waste gas trapping point (1) is provided with transverse wind shields at two sides of the wind catcher (3).
3. The treatment process of the unorganized organic waste gas according to claim 2, characterized in that the process further comprises installing an air volume adjusting valve (4) on the air capture machine (3) for adjusting the air volume of the air capture machine (3).
4. The process for treating the unorganized organic waste gas according to claim 3, further comprising a concentration monitor provided at each waste gas trapping point (1) for monitoring the concentration of the organic waste gas, wherein the air volume regulating valve (4) increases the air volume of the air trapping fan (3) when the concentration of the organic waste gas exceeds a threshold value.
5. The process for treating an unorganized organic waste gas according to claim 1, characterized in that the process further comprises periodically detecting the concentration of the oxidizing agent in the header tank (5), and the oxidizing agent replenishing tank (14) replenishes the oxidizing agent in the header tank (5) when the concentration of the oxidizing agent in the header tank (5) is lower than a set value.
6. The treatment process of the unorganized organic waste gas according to claim 5, characterized in that a washing pipe (17) is arranged between the washing tower (6) and the plurality of air capturing fans (3), the organic waste gas is mixed with the oxidizing washing liquid in the washing pipe (17) and then enters the washing tower (6), and the oxidizing washing liquid in the washing pipe (17) is supplemented through an oxidizing washing liquid supplementing tank (16).
7. The process for treating unorganized organic waste gas according to claim 6, wherein the oxidant in the oxidizing washing liquid and the oxidant in the oxidant replenishing tank (14) are one of hydrogen peroxide, fenton's oxidant, chlorine dioxide, sodium hypochlorite and potassium permanganate or a mixture of any proportion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210309280.9A CN114534464A (en) | 2022-03-28 | 2022-03-28 | Treatment process of unorganized organic waste gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210309280.9A CN114534464A (en) | 2022-03-28 | 2022-03-28 | Treatment process of unorganized organic waste gas |
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| CN114534464A true CN114534464A (en) | 2022-05-27 |
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| CN202210309280.9A Pending CN114534464A (en) | 2022-03-28 | 2022-03-28 | Treatment process of unorganized organic waste gas |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106914085A (en) * | 2015-12-28 | 2017-07-04 | 无锡红旗除尘设备有限公司 | Thermoplastic resin sand coremaking method for purifying and processing waste gas |
| KR101920827B1 (en) * | 2018-02-21 | 2018-11-26 | (주)케이플랜트 | Indoor Concentrated and Combustion System of VOCs with Catalytic Poison Oxidation device |
| CN110479038A (en) * | 2019-09-04 | 2019-11-22 | 爱润森德（天津）能源科技有限公司 | A kind of exhaust treatment system and processing method suitable for coal chemical industry |
| CN110732220A (en) * | 2019-11-21 | 2020-01-31 | 佛山绿曦环境工程有限公司 | Paint spraying line waste gas adsorption concentration catalytic combustion treatment system and treatment method thereof |
| CN111068513A (en) * | 2019-12-27 | 2020-04-28 | 东华大学 | Method for treating coating waste gas by manganese-loaded expanded graphite adsorption coupling catalysis ozone oxidation |
| CN111871182A (en) * | 2020-07-30 | 2020-11-03 | 成都达源环保工程有限公司 | Fenton combined biological filter system for treating organic waste gas |
-
2022
- 2022-03-28 CN CN202210309280.9A patent/CN114534464A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106914085A (en) * | 2015-12-28 | 2017-07-04 | 无锡红旗除尘设备有限公司 | Thermoplastic resin sand coremaking method for purifying and processing waste gas |
| KR101920827B1 (en) * | 2018-02-21 | 2018-11-26 | (주)케이플랜트 | Indoor Concentrated and Combustion System of VOCs with Catalytic Poison Oxidation device |
| CN110479038A (en) * | 2019-09-04 | 2019-11-22 | 爱润森德（天津）能源科技有限公司 | A kind of exhaust treatment system and processing method suitable for coal chemical industry |
| CN110732220A (en) * | 2019-11-21 | 2020-01-31 | 佛山绿曦环境工程有限公司 | Paint spraying line waste gas adsorption concentration catalytic combustion treatment system and treatment method thereof |
| CN111068513A (en) * | 2019-12-27 | 2020-04-28 | 东华大学 | Method for treating coating waste gas by manganese-loaded expanded graphite adsorption coupling catalysis ozone oxidation |
| CN111871182A (en) * | 2020-07-30 | 2020-11-03 | 成都达源环保工程有限公司 | Fenton combined biological filter system for treating organic waste gas |
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