CN110652854A - VOC waste gas treatment device and treatment method thereof - Google Patents
VOC waste gas treatment device and treatment method thereof Download PDFInfo
- Publication number
- CN110652854A CN110652854A CN201810700097.5A CN201810700097A CN110652854A CN 110652854 A CN110652854 A CN 110652854A CN 201810700097 A CN201810700097 A CN 201810700097A CN 110652854 A CN110652854 A CN 110652854A
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- 239000002912 waste gas Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000007789 gas Substances 0.000 claims abstract description 44
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 43
- 230000003647 oxidation Effects 0.000 claims abstract description 31
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000460 chlorine Substances 0.000 claims abstract description 28
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 28
- 239000003595 mist Substances 0.000 claims abstract description 25
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 20
- 239000007864 aqueous solution Substances 0.000 claims abstract description 16
- 238000000889 atomisation Methods 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000006276 transfer reaction Methods 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 230000001590 oxidative effect Effects 0.000 claims abstract description 5
- 230000001502 supplementing effect Effects 0.000 claims description 10
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 8
- 239000004155 Chlorine dioxide Substances 0.000 claims description 4
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 4
- 239000008400 supply water Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000010815 organic waste Substances 0.000 abstract description 10
- 239000012855 volatile organic compound Substances 0.000 description 25
- 238000005516 engineering process Methods 0.000 description 8
- 239000002360 explosive Substances 0.000 description 5
- 238000007084 catalytic combustion reaction Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000004065 wastewater treatment Methods 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a VOC waste gas treatment device and a treatment method thereof. The oxidation state active chlorine generator unit comprises a first container and an electrocatalytic oxidation exciter, wherein the first container is internally provided with an aqueous solution in which chloride is dissolved, and the electrocatalytic oxidation exciter is used for oxidizing at least part of chloride ions in the aqueous solution into oxidation state active chlorine; the atomization unit comprises an atomizer, and the atomizer atomizes the aqueous solution with the oxidation state active chlorine into water mist; the gas-fog mixing reaction unit is communicated with the atomization unit, and the water fog and the VOC waste gas are subjected to mass transfer reaction to oxidize and degrade the VOC waste gas. It has the following advantages: the water solution of active chlorine in oxidation state with strong oxidation ability is atomized to generate water fog, which contacts with organic waste gas fully with great specific surface area and produces oxidation reaction to degrade organic waste gas and eliminate bad smell.
Description
Technical Field
The invention relates to the field of environmental protection, in particular to a VOC waste gas treatment device and a treatment method thereof.
Background
The VOC (volatile organic compound) treatment is the key of the atmospheric environment treatment, and the VOC treatment technology can basically meet the requirements of various industries and various waste gas treatment after years of development and improvement, but the prior art still has many defects and shortcomings in the treatment of organic waste gas with certain special forms. The existing VOC treatment technology (introduced in the following paragraph) is not suitable for organic waste gas with special forms such as inflammable and explosive gas, dust-containing waste gas, tar-containing waste gas, odor-containing waste gas and the like.
The existing VOC treatment technology comprises the following steps: 1. water spray adsorption; 2. a photocatalytic degradation method; 3. adsorption-desorption catalytic combustion; 4. a direct combustion method; 5. a direct catalytic combustion method; 6. plasma oxidation method; 7. ozone generator oxidation, and the like. These methods work well in adapted industries and applications, such as: the water spraying adsorption method is suitable for treating organic waste gas with strong water solubility, but has no effect on waste gas and odor without water solubility; the photocatalytic degradation method is suitable for occasions with low organic components (harmful components) in the waste gas, but is not suitable for occasions with high concentration, flammable and explosive gas and waste gas with adhesive fine dust, so the method has narrow application range and limited degradation force; the direct catalytic combustion method and the direct combustion method belong to the field of combustion technology, are suitable for most organic waste gases, are relatively suitable for the occasions with higher concentration, do not contain organic waste gases generating dioxin, and are not suitable for the occasions with extremely low concentration and the occasions with flammable and explosive gases; the high-grade oxidation of the plasma oxidation method is to utilize the plasma discharge to generate ozone and hydroxyl free radicals to oxidize organic molecules in the waste gas so as to degrade harmful components, the method is suitable for occasions with low-concentration gas and deodorization, but is not suitable for occasions with adhesive particles or combustible and explosive tar components, because the adhesion easily causes the failure of discharge terminals, and the tar components are easily discharged to ignite to cause fire. In view of the above analysis, there is a need for an advanced technology in VOC treatment technology that has no potential safety hazard of fire hazard, can degrade high, medium and low concentration organic substances, does not ignite explosive gas, and has significant deodorization efficiency.
Disclosure of Invention
The invention provides a VOC waste gas treatment device and a treatment method thereof, which overcome the defects of a VOC waste gas treatment method in the background technology.
One of the technical schemes adopted by the invention for solving the technical problems is as follows:
a VOC waste gas treatment device, comprising
An oxidized active chlorine generator unit comprising a first container having an aqueous solution of chloride dissolved therein and an electrocatalytic oxidation stimulator disposed in the first container for oxidizing at least a portion of the chloride ions in the aqueous solution to oxidized active chlorine;
the atomization unit comprises an atomizer, the atomization unit is communicated with the first container, and the atomizer atomizes the aqueous solution with the oxidized active chlorine into water mist; and
and the aerial fog mixing reaction unit is communicated with the atomization unit, and the water fog and the VOC waste gas are subjected to mass transfer reaction to oxidize and degrade the VOC waste gas.
In one embodiment: the atomizer comprises an ultrasonic atomizer.
In one embodiment: the oxidized active chlorine generator unit further comprises a chloride adder, a water supplementing container, a water conveying water pump and a water supply water pump, wherein the chloride adder is connected with the water supplementing container, the water conveying water pump is connected with the water supplementing container and the first container, and the water supply water pump is connected with the atomizing unit and the first container.
In one embodiment: the active chlorine in the oxidized state comprises molecules of chlorine dioxide having a valence of 4.
In one embodiment: the atomization unit also comprises a second container, the atomizer is arranged on the second container, and the first container is communicated with the second container.
In one embodiment: the atomization unit also comprises an air pump, and the air pump is connected with the aerial fog mixing reaction unit and the atomizer.
In one embodiment: this aerial fog mixed reaction unit includes horizontal gas pitcher and collecting vessel, and the switch-on has the exhaust duct of input VOC waste gas under this horizontal gas pitcher first end, and this atomizer switch-on exhaust duct is used for spouting into aerial fog toward the exhaust duct in, and this horizontal gas pitcher second end top is equipped with the evacuation pipe, and this horizontal gas pitcher second end bottom is equipped with the outlet that is used for discharging the fog that contains organic composition and congeals water, and this collecting vessel is used for collecting fog and congeals water.
In one embodiment: the horizontal gas tank is internally provided with a cylindrical cavity, and the exhaust pipeline is arranged along the tangent of the arc cavity.
In one embodiment: the input end of the exhaust pipeline is provided with a fan.
The second technical scheme adopted by the invention for solving the technical problems is as follows:
the VOC exhaust gas treatment device treatment method according to claim 1, comprising:
step 1, an electrocatalytic oxidation exciter is arranged to oxidize at least part of chloride ions in an aqueous solution into oxidation state active chlorine;
step 2, atomizing the water solution containing the oxidation state active chlorine into water mist by an atomizer;
and 3, carrying out mass transfer reaction on the water mist and the VOC waste gas, wherein the water mist contains oil and is in full contact with the VOC waste gas in a large specific surface area through a micro-oxidation unit, and the VOC waste gas is degraded through oxidation reaction generated by the micro-oxidation unit.
Compared with the background technology, the technical scheme has the following advantages:
the water solution of active chlorine in oxidation state with strong oxidizing power is atomized to produce water mist, which contacts with organic waste gas in great specific surface area and produces oxidation reaction to degrade organic waste gas and eliminate bad smell.
Drawings
The invention is further described with reference to the following figures and detailed description.
Fig. 1 is a schematic structural view of the VOC exhaust gas treatment device according to this embodiment.
Detailed Description
Referring to fig. 1, the VOC exhaust gas treatment device includes an oxidized form active chlorine generator unit 10, an atomizing unit 20, and an air-mist mixing reaction unit 30.
The oxidized form active chlorine generator unit 10 includes a first vessel having an aqueous solution of chloride, typically sodium chloride, potassium chloride, but also hydrochloric acid, dissolved therein, an electrocatalytic oxidation activator disposed in the first vessel for performing a catalytic oxidation molecular synthesis reaction for oxidizing at least a portion of the chloride ions in the aqueous solution to oxidized form active chlorine, the oxidized form active chlorine including molecules of chlorine dioxide having a valence of 4. The oxidation state active chlorine generator unit further comprises a chloride adder 11, a water supplementing container, a water conveying pump and a water supply pump, wherein the chloride adder 11 is connected with the water supplementing container, the water conveying pump is connected with the water supplementing container and the first container to convey the water solution with the chloride dissolved to the first container, the water supplementing container can be directly communicated with tap water, and the water supply pump is connected with the atomizing unit and the first container to convey the water solution with the oxidation state active chlorine to the atomizing unit. Preferably, the chloride adder 11 and the water pump may be controlled by a controller to add the chloride in a proper amount in real time according to the process. The electrocatalytic oxidation stimulator may be an electrocatalytic oxidation device as already disclosed in the existing market, or as mentioned in the applicant's prior patent publications or publications.
The atomization unit 20 comprises an atomizer and a second container, wherein the atomizer is arranged in the second container, and the water supply pump is connected with the first container and the second container; the atomizer comprises an ultrasonic atomizer, and the ultrasonic atomizer atomizes the aqueous solution with the oxidation state active chlorine into water mist.
This aerial fog mixed reaction unit 30 includes horizontal gas pitcher 31 and collecting container 32, the switch-on has the exhaust duct 33 of input VOC waste gas under this horizontal gas pitcher 31 first end, this exhaust duct 33 input is equipped with fan 34, this atomizing unit 20's atomizer switch-on exhaust duct 33 is used for spouting aerial fog into toward exhaust duct 33, this horizontal gas pitcher 31 second end top is equipped with evacuation pipe 35, this horizontal gas pitcher 31 second end bottom is equipped with the outlet that is used for discharging the fog that contains organic component to congeal water, this collecting container 32 opening is just being located under the outlet for collect fog and congeal water. The horizontal gas tank 31 has a cylindrical cavity therein, and the exhaust pipe 33 is arranged along the tangent of the arc cavity, so that the entering exhaust gas makes spiral stirring motion along the tank wall (as shown by the dotted line in the figure), and the flow rate is reduced to provide enough gas-mist mass transfer reaction time. The atomization unit further comprises a water mist conveying pipe, the water mist conveying pipe is connected with an air pump, one end of the water mist conveying pipe is communicated with the atomizer, and the other end of the water mist conveying pipe is communicated with the exhaust pipeline. The fog-condensed water containing organic components can be directly mixed into an enterprise wastewater treatment system for treatment.
The treatment method of the VOC waste gas treatment device comprises the following steps:
step 1, an electrocatalytic oxidation exciter is arranged to oxidize at least part of chloride ions in an aqueous solution into oxidation state active chlorine;
step 2, atomizing the water solution containing the active chlorine in the oxidation state into superfine water mist by an ultrasonic atomizer;
and 3, carrying out mass transfer reaction on the water mist and the VOC waste gas, wherein the water mist (chlorine dioxide aqueous solution) contains an oil micro-oxidation unit, each water mist particle is equivalent to a micro-oxidation unit, the water mist is fully contacted with the VOC waste gas by a huge specific surface area, and the micro-oxidation unit generates oxidation reaction to degrade the VOC waste gas and eliminate the odor of the waste gas, namely, the water mist degrades the organic waste gas and eliminates the odor of the waste gas by utilizing the principle that the strong oxidation property of the water mist particles realizes the rapid mass transfer reaction of the gas-liquid gas mist.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents.
Claims (10)
- VOC exhaust gas treatment device, its characterized in that: comprises thatAn oxidized active chlorine generator unit comprising a first container having an aqueous solution of chloride dissolved therein and an electrocatalytic oxidation stimulator disposed in the first container for oxidizing at least a portion of the chloride ions in the aqueous solution to oxidized active chlorine;the atomization unit comprises an atomizer, the atomization unit is communicated with the first container, and the atomizer atomizes the aqueous solution with the oxidized active chlorine into water mist; andand the aerial fog mixing reaction unit is communicated with the atomization unit, and the water fog and the VOC waste gas are subjected to mass transfer reaction to oxidize and degrade the VOC waste gas.
- 2. The VOC exhaust gas treatment device according to claim 1, wherein: the atomizer comprises an ultrasonic atomizer.
- 3. The VOC exhaust gas treatment device according to claim 1, wherein: the oxidized active chlorine generator unit further comprises a chloride adder, a water supplementing container, a water conveying water pump and a water supply water pump, wherein the chloride adder is connected with the water supplementing container, the water conveying water pump is connected with the water supplementing container and the first container, and the water supply water pump is connected with the atomizing unit and the first container.
- 4. The VOC exhaust gas treatment device according to claim 1, wherein: the active chlorine in the oxidized state comprises molecules of chlorine dioxide having a valence of 4.
- 5. The VOC exhaust gas treatment device according to claim 1, wherein: the atomization unit also comprises a second container, the atomizer is arranged on the second container, and the first container is communicated with the second container.
- 6. The VOC exhaust gas treatment device according to claim 1, wherein: the atomization unit also comprises an air pump, and the air pump is connected with the aerial fog mixing reaction unit and the atomizer.
- 7. The VOC exhaust treatment device of claim 1 or 2 or 3 or 4 or 5 or 6, wherein: this aerial fog mixed reaction unit includes horizontal gas pitcher and collecting vessel, and the switch-on has the exhaust duct of input VOC waste gas under this horizontal gas pitcher first end, and this atomizer switch-on exhaust duct is used for spouting into aerial fog toward the exhaust duct in, and this horizontal gas pitcher second end top is equipped with the evacuation pipe, and this horizontal gas pitcher second end bottom is equipped with the outlet that is used for discharging the fog that contains organic composition and congeals water, and this collecting vessel is used for collecting fog and congeals water.
- 8. The VOC exhaust gas treatment device according to claim 7, wherein: the horizontal gas tank is internally provided with a cylindrical cavity, and the exhaust pipeline is arranged along the tangent of the arc cavity.
- 9. The VOC exhaust gas treatment device according to claim 7, wherein: the input end of the exhaust pipeline is provided with a fan.
- 10. The VOC exhaust gas treatment device treatment method according to claim 1, characterized in that: the method comprises the following steps:step 1, an electrocatalytic oxidation exciter is arranged to oxidize at least part of chloride ions in an aqueous solution into oxidation state active chlorine;step 2, atomizing the water solution containing the oxidation state active chlorine into water mist by an atomizer;and 3, carrying out mass transfer reaction on the water mist and the VOC waste gas, wherein the water mist contains oil and is in full contact with the VOC waste gas in a large specific surface area through a micro-oxidation unit, and the VOC waste gas is degraded through oxidation reaction generated by the micro-oxidation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810700097.5A CN110652854A (en) | 2018-06-29 | 2018-06-29 | VOC waste gas treatment device and treatment method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810700097.5A CN110652854A (en) | 2018-06-29 | 2018-06-29 | VOC waste gas treatment device and treatment method thereof |
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| CN110652854A true CN110652854A (en) | 2020-01-07 |
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| CN201810700097.5A Pending CN110652854A (en) | 2018-06-29 | 2018-06-29 | VOC waste gas treatment device and treatment method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114950102A (en) * | 2022-03-28 | 2022-08-30 | 福建爱溥环保设备有限公司 | Waste gas treatment device and treatment method |
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