CN114653167A - Wet-process VOC (volatile organic compound) treatment system and method - Google Patents
Wet-process VOC (volatile organic compound) treatment system and method Download PDFInfo
- Publication number
- CN114653167A CN114653167A CN202210151524.5A CN202210151524A CN114653167A CN 114653167 A CN114653167 A CN 114653167A CN 202210151524 A CN202210151524 A CN 202210151524A CN 114653167 A CN114653167 A CN 114653167A
- Authority
- CN
- China
- Prior art keywords
- water
- iron
- wet
- organic matters
- ozone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000012855 volatile organic compound Substances 0.000 title claims description 33
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 49
- 230000003647 oxidation Effects 0.000 claims abstract description 46
- 230000001590 oxidative effect Effects 0.000 claims abstract description 33
- 238000005406 washing Methods 0.000 claims abstract description 23
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 79
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 46
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 41
- 238000006243 chemical reaction Methods 0.000 claims description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 34
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims description 33
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 29
- 239000002245 particle Substances 0.000 claims description 26
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 23
- 239000001569 carbon dioxide Substances 0.000 claims description 23
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims description 23
- 239000007800 oxidant agent Substances 0.000 claims description 15
- 238000009298 carbon filtering Methods 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 11
- 239000002023 wood Substances 0.000 claims description 11
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims description 10
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 9
- -1 hydroxyl radicals Chemical class 0.000 claims description 9
- UMPKMCDVBZFQOK-UHFFFAOYSA-N potassium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[K+].[Fe+3] UMPKMCDVBZFQOK-UHFFFAOYSA-N 0.000 claims description 9
- 239000004094 surface-active agent Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 239000002920 hazardous waste Substances 0.000 claims description 6
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 150000003254 radicals Chemical class 0.000 claims description 4
- 238000005273 aeration Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 230000005684 electric field Effects 0.000 claims description 3
- 239000003623 enhancer Substances 0.000 claims description 3
- 238000005189 flocculation Methods 0.000 claims description 3
- 230000016615 flocculation Effects 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 150000002894 organic compounds Chemical class 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000006378 damage Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009279 wet oxidation reaction Methods 0.000 description 2
- 208000000044 Amnesia Diseases 0.000 description 1
- 206010010071 Coma Diseases 0.000 description 1
- 206010010904 Convulsion Diseases 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 208000006083 Hypokinesia Diseases 0.000 description 1
- 208000026139 Memory disease Diseases 0.000 description 1
- 206010028813 Nausea Diseases 0.000 description 1
- 206010047700 Vomiting Diseases 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 230000006984 memory degeneration Effects 0.000 description 1
- 208000023060 memory loss Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008693 nausea Effects 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000008673 vomiting Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
- B01D53/185—Liquid distributors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—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
- 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
-
- 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
- B01D53/8671—Removing components of defined structure not provided for in B01D53/8603 - B01D53/8668
- B01D53/8675—Ozone
-
- 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
-
- 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
- B01D53/88—Handling or mounting catalysts
- B01D53/885—Devices in general for catalytic purification of waste gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/60—Additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20738—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/806—Electrocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/22—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/106—Ozone
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention relates to a wet VOC treatment system and a method thereof, which comprises a tower body, wherein a liquid inlet pipeline is arranged on one side of the bottom of the tower body, an air outlet pipeline is arranged at the top of the tower body, and an oxidation unit, a washing unit and a filtering unit are sequentially arranged in the tower body between the air outlet pipeline and the liquid inlet pipeline from bottom to top; the oxidation unit is used for decomposing and oxidizing organic matters; the washing unit is used for capturing organic matters; the filtering unit is used for further oxidizing organic matters to degrade ozone. The invention has the advantages that: the wet treatment is adopted, open fire and high temperature are avoided, and the blank of the normal-temperature wet treatment of the VOC treatment technology is filled.
Description
Technical Field
The invention relates to a wet VOC treatment system and a method thereof, and relates to the technical field of gas treatment.
Background
The VOC refers to an active volatile organic compound, namely a volatile organic compound which can be harmful, when the VOC reaches a certain concentration, people can feel headache, nausea, vomiting, hypodynamia and the like in a short time, and in severe cases, convulsion and coma can occur, and the liver, the kidney, the brain and the nervous system of people can be injured, so that serious consequences such as memory loss can be caused.
The existing VOC treatment measures are not limited to modes of condensation recovery, activated carbon adsorption, thermal destruction and the like. The high concentration has a certain recovery value, and the low concentration generally adopts a thermal destruction mode and utilizes a combustion process. The common low-temperature plasma, RTO and RCO relate to high temperature and open fire, and have potential safety hazards in the organic chemical industry.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a wet-process VOC (volatile organic compound) treatment system and a method thereof, and the technical scheme of the invention is as follows:
a wet VOC treatment system comprises a tower body, wherein an air inlet pipeline is arranged on one side of the bottom of the tower body, an air outlet pipeline is arranged at the top of the tower body, and an oxidation unit, a washing unit and a filtering unit are sequentially arranged in the tower body between the air outlet pipeline and the air inlet pipeline from bottom to top; the oxidation unit is used for decomposing and oxidizing organic matters; the washing unit is used for capturing organic matters; the filtering unit is used for further oxidizing organic matters into ozone and degrading the ozone.
The oxidation unit is used for performing wet oxidation in a mode of electrode oxidation, plasma oxidation, ozone oxidation or enhancer oxidation; the washing unit catches organic matters in water, and the oxidation unit oxidizes the organic matters into carbon dioxide and water; wherein, the electrode is oxidized to generate hydrogen peroxide, ozone or strong oxidizing particles of hydroxyl radical species by water and oxygen through the electric field generated by the positive electrode and the negative electrode, and the strong oxidizing particles react with organic matters to generate carbon dioxide and water.
The ozone oxidation mode is that ozone generated by the ozone generator is aerated in water through the microporous aeration head, partial hydrogen peroxide and hydroxyl radicals are generated in the contact process of the ozone and the water, and strong oxidizing particles of hydrogen peroxide, ozone or hydroxyl radicals react with organic matters to generate carbon dioxide and water.
The oxidation mode of the strong oxidant is to add a strong oxidant of potassium ferrate into water, the potassium ferrate oxidizes organic matters to generate carbon dioxide and water, and simultaneously generates ferric iron flocculation precipitation; the concentration of the potassium ferrate is 40-55%.
The washing unit sprays liquid drops from top to bottom through the atomizing nozzles to collide and absorb organic matters in airflow from bottom to top, the organic matters are captured into water after a capture agent is added, then oxidation reaction is carried out, the organic matters in the water are oxidized into carbon dioxide and water, and the water is collected at the oxidation unit and is circularly sprayed through the circulating pump; the trapping agent is a surfactant.
The oxidation unit comprises a reaction chamber, a buffer chamber, a first communicating pipe, a second communicating pipe and a third communicating pipe, wherein the first communicating pipe communicated with an air inlet pipeline is arranged on one side of the reaction chamber, the other side of the reaction chamber is connected to one side of the buffer chamber through the second communicating pipe, the third communicating pipe communicated with a washing unit is arranged on the other side of the buffer chamber, a partition plate is arranged in the reaction chamber, a turbulence unit is arranged on one side of the partition plate, and a wet processing unit is arranged on the other side of the partition plate; the flow disturbing unit comprises flow guiding rods and arc-shaped flow guiding bulges, the two arc-shaped flow guiding bulges are oppositely arranged, an air passage for gas to pass through is formed in the middle of the two arc-shaped flow guiding bulges, the flow guiding rods are arranged on each arc-shaped flow guiding bulge, and the two flow guiding rods are arranged in an opposite insertion manner; the wet processing unit comprises an oxidant inlet pipe, a nozzle and a nozzle bracket, the oxidant inlet pipe communicated with the reaction chamber is arranged outside the reaction chamber, the nozzle bracket is arranged inside the reaction chamber, and the nozzle bracket is provided with a plurality of nozzles communicated with the oxidant inlet pipe.
The filtering unit comprises an iron-carbon filtering layer, the iron-carbon filtering layer is used for further decomposing residual volatile organic compounds and capturing redundant ozone, the iron-carbon filtering layer is arranged at the top of the absorption tower and is used for generating hydrogen peroxide with the redundant ozone and water, the hydrogen peroxide and ferrous iron of the iron-carbon filtering layer are subjected to Fenton reaction, the generated hydroxyl radicals oxidize the organic compounds into carbon dioxide and water, the Fenton reaction generates ferric iron, the ferric iron and the iron react to generate ferrous iron, and the process is circulated until the iron is completely consumed; the ozone is consumed when passing through the iron-carbon filter layer; the iron-carbon filtering layer is prepared by mixing iron powder, wood powder and ferrous solution to prepare blocky particles, the mass ratio of the iron powder, the wood powder and the ferrous solution is 1:1:5, the percentage concentration of the ferrous solution is 8-12 wt%, the iron powder, the wood powder and the ferrous solution are intensively mixed to prepare blocky particles, porous active carbon is used as a skeleton, particles with iron and ferrous coexisting are formed by sintering, and gas containing volatile organic matters and water generates a Fenton reaction when passing through the porous iron-carbon mixed particles.
A wet VOC treatment method comprises a wet capture step and an electrode oxidation step which are sequentially carried out; the wet capture specifically comprises: adding a trapping agent into water, spraying and washing to change the affinity property of the water and oil, trapping organic matters, and treating the wastewater containing volatile organic matters generated by trapping as hazardous waste or treating the wastewater by a water treatment system to reach the standard and then discharging; the step of wet capture and the step of electrode oxidation degrade volatile organic compounds in the tower, water is recycled without being discharged outside, and the water is not required to be used as hazardous waste and transported outside to a sewage treatment system; the trapping agent is a surfactant, and the organic matters and water have affinity performance by changing the surface activity of water drops, so that the trapping efficiency of the organic matters is improved. The surfactant is easy to form foam in the washing unit to cause tower phenomenon, and the iron carbon filter layer simultaneously plays a role of defoaming; an iron-carbon filter layer is arranged on the top of the absorption tower and is connected with H2O2、Fe2+Generates Fenton reaction to generate hydroxyl free radicals, further oxidizes organic matters into carbon dioxide and water, degrades ozone and prevents the ozone from escaping.
The invention has the advantages that: the wet treatment is adopted, open fire is avoided, and the blank of the VOC treatment technology in the normal temperature wet treatment method is filled. The trapping agent is added into water to change the affinity property of water and oil, so as to trap organic matters. When electrolysis is carried out using electrodes, O is generated3、H2O2And hydroxyl radical and other oxidizing particles to decompose and oxidize organic matter and finally into carbon dioxide and water; meanwhile, in order to ensure the collection efficiency of the volatile organic compounds and reduce the discharge of the excessive ozone, the ozone is suckedThe top of the tower is provided with an iron-carbon filter layer H2O2And Fe2+Generate Fenton reaction to generate hydroxyl free radicals, further oxidize organic matters into carbon dioxide and water, degrade ozone and prevent the ozone from escaping.
Drawings
Fig. 1 is a schematic view of the main structure of the present invention.
FIG. 2 is a schematic structural diagram of an embodiment of an oxidation unit of the present invention.
Detailed Description
The invention will be further described with reference to specific embodiments, and the advantages and features of the invention will become apparent as the description proceeds. These examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.
Referring to fig. 1, the invention relates to a wet-process VOC treatment system, comprising a tower body 1, wherein an air inlet pipeline 2 is arranged on one side of the bottom of the tower body 1, an air outlet pipeline 3 is arranged on the top of the tower body 1, and an oxidation unit 5, a washing unit 6 and a filtering unit 7 are sequentially arranged in the tower body 1 between the air outlet pipeline 3 and the air inlet pipeline 2 from bottom to top; the oxidation unit 5 is used for decomposing and oxidizing organic matters; the washing unit 6 is used for capturing organic matters; the filtering unit 7 is used for further oxidizing organic matters to degrade ozone.
The oxidation unit 5 is used for performing wet oxidation in a mode of electrode oxidation, plasma oxidation, ozone oxidation or enhancer oxidation; the washing unit 6 catches organic matters in water, and the oxidation unit oxidizes the organic matters into carbon dioxide and water; wherein, the electrode oxidation is that water and oxygen are generated into hydrogen peroxide, ozone or strong oxidizing particles of hydroxyl radical species by an electric field generated by the positive electrode and the negative electrode, and the hydrogen peroxide, the ozone or the strong oxidizing particles of the hydroxyl radical species react with organic matters to generate carbon dioxide and water.
The ozone oxidation mode is that ozone generated by the ozone generator is aerated in water through the microporous aeration head, partial hydrogen peroxide and hydroxyl radicals are generated in the contact process of the ozone and the water, and strong oxidizing particles of hydrogen peroxide, ozone or hydroxyl radicals react with organic matters to generate carbon dioxide and water.
The oxidation mode of the strong oxidant is to add a strong oxidant of potassium ferrate into water, the potassium ferrate oxidizes organic matters to generate carbon dioxide and water, and simultaneously generates ferric iron flocculation precipitation; the concentration of the potassium ferrate is 40-55%.
The washing unit 7 sprays liquid drops from top to bottom through an atomizing nozzle, the liquid drops collide with organic matters in airflow from bottom to top for absorption, the organic matters are captured into water after a capture agent is added, then oxidation reaction is carried out, the organic matters in the water are oxidized into carbon dioxide and water, and the water is collected at the oxidation unit and is sprayed circularly through a circulating pump; the trapping agent is a surfactant.
As shown in fig. 2, the oxidation unit includes a reaction chamber 17, a buffer chamber 8, a first communicating pipe 13, a second communicating pipe 15 and a third communicating pipe 14, the first communicating pipe 13 communicated with the air inlet pipe 2 is arranged at one side of the reaction chamber 17, the other side is connected with one side of the buffer chamber 8 through the second communicating pipe 15, the third communicating pipe 14 communicated with the washing unit 6 is arranged at the other side of the buffer chamber 8, a partition plate 18 (an air hole 19 is arranged on the partition plate 18) is arranged in the reaction chamber 17, a turbulent flow unit is arranged at one side of the partition plate 18, and a wet processing unit is arranged at the other side of the partition plate 18; the flow disturbing unit comprises flow guiding rods and arc-shaped flow guiding bulges 20, the two arc-shaped flow guiding bulges 20 are oppositely arranged, an air passage for gas to pass through is formed in the middle of each flow disturbing unit, each arc-shaped flow guiding bulge 20 is provided with a flow guiding rod (comprising an upper flow guiding rod 22 and a lower flow guiding rod 21), and the two flow guiding rods are arranged in an opposite insertion manner; the wet processing unit comprises an oxidant inlet pipe 16, a nozzle 23 and a nozzle bracket, the oxidant inlet pipe 16 communicated with the reaction chamber 17 is arranged outside the reaction chamber 17, the nozzle bracket 24 is arranged inside the reaction chamber 17, and a plurality of nozzles 24 communicated with the oxidant inlet pipe 16 are arranged on the nozzle bracket 24.
The filtering unit comprises an iron-carbon filtering layer, the iron-carbon filtering layer is used for further decomposing residual volatile organic compounds and capturing residual ozone, the iron-carbon filtering layer is arranged at the top of the absorption tower, the residual ozone and water are generated into hydrogen peroxide, the hydrogen peroxide and ferrous iron of the iron-carbon filtering layer are subjected to Fenton reaction, the generated hydroxyl radicals oxidize the organic compounds into carbon dioxide and water, the Fenton reaction generates ferric iron, the ferric iron and the iron react to generate ferrous iron, and the steps are circulated until the iron is completely consumed; the ozone is consumed when passing through the iron-carbon filter layer; the iron-carbon filtering layer is prepared by mixing iron powder, wood powder and ferrous solution to prepare blocky particles, the mass ratio of the iron powder, the wood powder and the ferrous solution is 1:1:5, the percentage concentration of the ferrous solution is 8-12 wt%, the iron powder, the wood powder and the ferrous solution are intensively mixed to prepare blocky particles, porous active carbon is used as a skeleton, particles with iron and ferrous coexisting are formed by sintering, and gas containing volatile organic matters and water generates a Fenton reaction when passing through the porous iron-carbon mixed particles.
The invention also relates to a wet VOC treatment method, which comprises the steps of wet capture and electrode oxidation which are sequentially carried out; the wet capture specifically comprises: adding a trapping agent into water, spraying and washing to change the affinity property of the water and oil and trap organic matters, wherein the waste water containing volatile organic matters generated by trapping is treated as hazardous waste or is treated by a water treatment system to reach the standard and then is discharged; the step of wet capture and the step of electrode oxidation degrade volatile organic compounds in the tower, water is recycled without being discharged outside, and the water is not required to be used as hazardous waste and transported outside to a sewage treatment system; the trapping agent is a surfactant, and the organic matters and water have affinity performance by changing the surface activity of water drops, so that the trapping efficiency of the organic matters is improved. The surfactant is easy to form foam in the washing unit to cause tower phenomenon, and the iron-carbon filtering layer simultaneously plays a role of defoaming; an iron-carbon filter layer is arranged on the top of the absorption tower and is connected with H2O2、 Fe2+Generate Fenton reaction to generate hydroxyl radical and further oxidize organic substances into carbon dioxideAnd water, the ozone is degraded, and the ozone is prevented from escaping.
The filtering unit comprises an iron-carbon filtering layer, the function of the iron-carbon filtering layer is to further decompose the residual volatile organic compounds and capture the redundant ozone, and the ozone is also a pollutant. The iron-carbon filler is placed at the top of the tower, redundant ozone and water generate hydrogen peroxide, the hydrogen peroxide and ferrous iron generate Fenton reaction, generated hydroxyl free radicals oxidize organic matters into carbon dioxide and water, the Fenton reaction generates ferric iron, the ferric iron and the iron react to generate ferrous iron, and the circulation is carried out until the iron is completely consumed. Ozone is consumed as it passes through the iron carbon filter. The iron-carbon filter layer particles are prepared by mixing iron powder, wood powder and ferrous solution to prepare blocky particles, carbonizing the wood powder in a high-temperature anoxic state to form particles with iron and ferrous coexisting by taking porous activated carbon as a framework, and performing Fenton reaction on gas containing volatile organic matters and water when the gas passes through the porous iron-carbon mixed particles.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The wet VOC treatment method is characterized by comprising the steps of wet capture and electrode oxidation which are sequentially carried out; the wet capture specifically comprises: adding a trapping agent into water, spraying and washing to change the affinity property of the water and oil and trap organic matters, and treating the wastewater containing volatile organic matters generated by trapping as hazardous waste or treating the wastewater by a water treatment system to reach the standard and then discharging the wastewater; the step of wet capture and the step of electrode oxidation degrade volatile organic compounds in the tower, water is recycled without being discharged outside, and the water is not required to be used as hazardous waste and transported outside to a sewage treatment system; the trapping agent is a surfactant, and the surface activity of water drops is changed to ensure that the organic matters have affinity with water and increase the trapping of the organic mattersEfficiency. The surfactant is easy to form foam in the washing unit to cause tower phenomenon, and the iron carbon filter layer simultaneously plays a role of defoaming; an iron-carbon filter layer is arranged on the top of the absorption tower and is connected with H2O2、Fe2+Generate Fenton reaction to generate hydroxyl free radicals, further oxidize organic matters into carbon dioxide and water, degrade ozone and prevent the ozone from escaping.
2. A wet VOC treatment system for realizing the wet VOC treatment method of claim 1, comprising a tower body, wherein an air inlet pipeline is arranged at one side of the bottom of the tower body, an air outlet pipeline is arranged at the top of the tower body, and an oxidation unit, a washing unit and a filtering unit are sequentially arranged in the tower body between the air outlet pipeline and the air inlet pipeline from bottom to top; the oxidation unit is used for decomposing and oxidizing organic matters; the washing unit is used for capturing organic matters; the filtering unit is used for further oxidizing the organic matters to degrade ozone.
3. The wet VOC abatement system of claim 2, wherein the oxidation unit is wet oxidized by electrode oxidation, plasma oxidation, ozone oxidation or enhancer oxidation; the washing unit catches organic matters in water, and the oxidation unit oxidizes the organic matters into carbon dioxide and water; wherein, the electrode oxidation is that water and oxygen are generated into hydrogen peroxide, ozone or strong oxidizing particles of hydroxyl radical species by an electric field generated by the positive electrode and the negative electrode, and the hydrogen peroxide, the ozone or the strong oxidizing particles react with organic matters to generate carbon dioxide and water.
4. The wet-process VOC treatment system of claim 3, wherein the ozone oxidation is performed by aerating ozone generated by an ozone generator in water through a microporous aeration head, wherein ozone partially generates hydrogen peroxide and hydroxyl radicals in the process of contacting with water, and strong oxidizing particles of hydrogen peroxide, ozone or hydroxyl radicals react with organic matters to generate carbon dioxide and water.
5. The wet-process VOC abatement system of claim 3, wherein said strong oxidant is oxidized by adding a strong oxidant such as potassium ferrate to the water, the potassium ferrate oxidizes the organic matter to produce carbon dioxide and water, and simultaneously produces ferric flocculation; the concentration of the potassium ferrate is 40-55%.
6. The wet-process VOC treatment system of any one of claims 3 to 5, wherein the washing unit sprays liquid drops from top to bottom through the atomizing nozzles to collide and absorb organic matters in the air flow from bottom to top, the organic matters are captured in water after the addition of the capture agent and then undergo an oxidation reaction, the organic matters in the water are oxidized into carbon dioxide and water, and the water is collected at the oxidation unit and is circularly sprayed through the circulating pump; the trapping agent is a surfactant.
7. The system of claim 2, wherein the oxidation unit comprises a reaction chamber, a buffer chamber, a first communicating pipe, a second communicating pipe and a third communicating pipe, the first communicating pipe is arranged on one side of the reaction chamber and communicated with the air inlet pipeline, the other side of the reaction chamber is connected with one side of the buffer chamber through the second communicating pipe, the third communicating pipe is arranged on the other side of the buffer chamber and communicated with the washing unit, a partition plate is arranged in the reaction chamber, a turbulent flow unit is arranged on one side of the partition plate, and a wet treatment unit is arranged on the other side of the partition plate; the flow disturbing unit comprises flow guiding rods and arc-shaped flow guiding bulges, the two arc-shaped flow guiding bulges are oppositely arranged, an air passage for gas to pass through is formed in the middle of the two arc-shaped flow guiding bulges, the flow guiding rods are arranged on each arc-shaped flow guiding bulge, and the two flow guiding rods are arranged in an opposite insertion manner; the wet processing unit comprises an oxidant inlet pipe, a nozzle and a nozzle bracket, the oxidant inlet pipe communicated with the reaction chamber is arranged outside the reaction chamber, the nozzle bracket is arranged inside the reaction chamber, and a plurality of nozzles communicated with the oxidant inlet pipe are arranged on the nozzle bracket.
8. The wet-process VOC treatment system of claim 2, wherein the filter unit comprises an iron-carbon filter layer for further decomposing the remaining volatile organic compounds and capturing the redundant ozone, the iron-carbon filter layer is arranged on the top of the absorption tower, the redundant ozone and water are generated into hydrogen peroxide, the hydrogen peroxide and ferrous iron of the iron-carbon filter layer undergo a Fenton reaction, the generated hydroxyl radicals oxidize the organic compounds into carbon dioxide and water, the Fenton reaction generates ferric iron, the ferric iron and iron react to generate ferrous iron, and the operation is repeated until the iron is consumed; the ozone is consumed when passing through the iron-carbon filter layer; the iron-carbon filtering layer is prepared by mixing iron powder, wood powder and ferrous solution to prepare blocky particles, the mass ratio of the iron powder, the wood powder and the ferrous solution is 1:1:5, the percentage concentration of the ferrous solution is 8-12 wt%, the iron powder, the wood powder and the ferrous solution are intensively mixed to prepare blocky particles, porous active carbon is used as a framework, particles with iron and ferrous coexisting are formed by sintering, and gas containing volatile organic matters and water generates a fenton reaction when passing through the porous iron-carbon mixed particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210151524.5A CN114653167A (en) | 2022-02-18 | 2022-02-18 | Wet-process VOC (volatile organic compound) treatment system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210151524.5A CN114653167A (en) | 2022-02-18 | 2022-02-18 | Wet-process VOC (volatile organic compound) treatment system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114653167A true CN114653167A (en) | 2022-06-24 |
Family
ID=82028241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210151524.5A Pending CN114653167A (en) | 2022-02-18 | 2022-02-18 | Wet-process VOC (volatile organic compound) treatment system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114653167A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101676016A (en) * | 2008-08-13 | 2010-03-24 | 赫多特普索化工设备公司 | Process and system for the abatement of impurities from a gas stream |
| WO2012006729A1 (en) * | 2010-07-15 | 2012-01-19 | Quadrogen Power Systems, Inc. | Integrated biogas cleaning system to remove water, siloxanes, sulfur, oxygen, chlorides and volatile organic compounds |
| CN204746097U (en) * | 2015-07-20 | 2015-11-11 | 杭州中兵环保股份有限公司 | Processing apparatus who contains low concentration VOCs waste gas |
| CN205164498U (en) * | 2015-11-30 | 2016-04-20 | 上海爱启环境技术工程有限公司 | Integrated treatment purifier of pollutant in waste gas |
| CN105771630A (en) * | 2016-03-17 | 2016-07-20 | 南京格洛特环境工程股份有限公司 | VOCs treatment process and equipment using heterogeneous catalytic oxidation |
| CN112121549A (en) * | 2020-09-25 | 2020-12-25 | 李琰 | VOC exhaust pollution treatment system |
| CN113143490A (en) * | 2018-09-11 | 2021-07-23 | 王秀娟 | Skin branch of academic or vocational study focus body surface hair scrape device clearly |
-
2022
- 2022-02-18 CN CN202210151524.5A patent/CN114653167A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101676016A (en) * | 2008-08-13 | 2010-03-24 | 赫多特普索化工设备公司 | Process and system for the abatement of impurities from a gas stream |
| WO2012006729A1 (en) * | 2010-07-15 | 2012-01-19 | Quadrogen Power Systems, Inc. | Integrated biogas cleaning system to remove water, siloxanes, sulfur, oxygen, chlorides and volatile organic compounds |
| CN204746097U (en) * | 2015-07-20 | 2015-11-11 | 杭州中兵环保股份有限公司 | Processing apparatus who contains low concentration VOCs waste gas |
| CN205164498U (en) * | 2015-11-30 | 2016-04-20 | 上海爱启环境技术工程有限公司 | Integrated treatment purifier of pollutant in waste gas |
| CN105771630A (en) * | 2016-03-17 | 2016-07-20 | 南京格洛特环境工程股份有限公司 | VOCs treatment process and equipment using heterogeneous catalytic oxidation |
| CN113143490A (en) * | 2018-09-11 | 2021-07-23 | 王秀娟 | Skin branch of academic or vocational study focus body surface hair scrape device clearly |
| CN112121549A (en) * | 2020-09-25 | 2020-12-25 | 李琰 | VOC exhaust pollution treatment system |
Non-Patent Citations (2)
| Title |
|---|
| 何强，吕远平主编: "《食品保藏技术原理 臭氧制备技术》", 30 November 2019, 中国轻工业出版社 * |
| 徐科峰等: "采用环境友好电解法制备过氧化氢", 《华南理工大学学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3419765B2 (en) | Ozone oxidizer | |
| US8383074B2 (en) | Process and device for simultaneously desulfurizing and denitrating the flue gas with the seawater | |
| CN104003504B (en) | A kind of organic wastewater with difficult degradation thereby catalytic ozonation treatment unit and technique | |
| CN205241316U (en) | Handle ozone oxidation equipment that contains cyanogen electroplating effluent | |
| CN105536458A (en) | Device for purifying organic waste gas by using oxidant and ultraviolet light and treatment method | |
| CN104587817A (en) | VOC decomposition composite-purifying processing apparatus and method | |
| JPH02172590A (en) | Process for removing nitrite and nitrate from aqueous solution without leaving residue | |
| CN109794155A (en) | The method for handling VOCs and foul gas | |
| CN210286990U (en) | Organic sewage and waste gas integrated treatment device | |
| CN206188547U (en) | Four -phase catalytic oxidation device | |
| CN205965456U (en) | Organic waste gas integrated treating equipment | |
| CN107670478A (en) | A kind of waste water station waste gas treatment process | |
| CN113648812A (en) | Integrated removal system and method for mercury and nitrate through photoelectric synergistic catalytic oxidation and wet-process absorption | |
| CN112316673A (en) | Odor and sewage treatment system | |
| CN110559827B (en) | Treatment process of papermaking waste gas | |
| CN114653167A (en) | Wet-process VOC (volatile organic compound) treatment system and method | |
| CN219559225U (en) | Wet-process VOC (volatile organic compound) treatment system | |
| CN106512685A (en) | Rubber exhaust gas purifying device and method | |
| CN211753899U (en) | Waste gas purifying device of pulp washer | |
| CN211612213U (en) | Novel organic waste gas spray column | |
| KR102098338B1 (en) | Ventilation system for removing ozone gas of activated carbon adsorber | |
| CN106823752A (en) | A kind of novel liquid-phase oxidative absorption method of denitration and system | |
| CN112870967A (en) | Purification method and purification device for catalytic decomposition of VOCs | |
| CN216136989U (en) | Printing and dyeing waste gas comprehensive treatment system | |
| CN213528123U (en) | Catalytic oxidation filter tank for organic sulfur waste gas treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220624 |
|
| RJ01 | Rejection of invention patent application after publication |