CN109621708A - A kind of VOCs exhaust gas heterogeneous oxidation processing method - Google Patents
A kind of VOCs exhaust gas heterogeneous oxidation processing method Download PDFInfo
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- CN109621708A CN109621708A CN201811579181.2A CN201811579181A CN109621708A CN 109621708 A CN109621708 A CN 109621708A CN 201811579181 A CN201811579181 A CN 201811579181A CN 109621708 A CN109621708 A CN 109621708A
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- exhaust gas
- reactor
- oxidant
- sent
- processing method
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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
-
- 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
Abstract
Present invention discloses a kind of VOCs exhaust gas heterogeneous oxidation processing methods, comprising steps of exhaust gas is sent into reactor by entrance, carry out turbulent processing by turbulence plate；Exhaust gas after turbulent flow is upwardly into the catalytic treatment layer of reactor, so that composite catalyst doping enters in exhaust gas；From reactor top ejecting liquid oxidant, while gaseous oxidant is passed through below reactor, two kinds of oxidants carry out catalytic oxidation treatment with the exhaust gas containing catalyst, by the oxidation operation in exhaust gas at carbon dioxide or water, realize exhaust-gas treatment.
Description
Technical field
The present invention relates to a kind of filter device more particularly to a kind of VOCs exhaust gas heterogeneous oxidation processing methods.
Background technique
Volatile organic compounds, abbreviation VOCs refer to full vapour pressure when boiling point is lower than 260 DEG C or room temperature under normal pressure
Organic compound greater than 71Pa.There are many type of VOCs, wherein aromatic hydrocarbon commonly molten for industry, alcohols, cruel class
And aldehydes.Most VOsC is toxic, foul smelling, or even has carcinogenicity, generates greatly harm, countries in the world to human body and environment
All pass through the legislation constantly discharge amount of limitation VOCs.
Mainly there are stationary source and two kinds of moving source in the source of VOCs.Moving source mainly has automobile, steamer and aircraft with petroleum
Product is the discharge gas of the vehicles of fuel；There are many type of stationary source, and predominantly petrochemical process process and storage is set
Standby equal effluent and the various occasions using organic solvent, such as spray painting, printing, metal degreasing and degreasing, adhesive, pharmacy,
Plastics and rubber processing etc..Other than these big pollution sources, there are also the small pollution sources being seen everywhere in daily life, such as paint,
Coating, floor are cured etc..For current technology is horizontal, the discharge of these vapor phase contaminants not can avoid, therefore there is an urgent need to
Effectively administer the technology of VOCs.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of VOCs exhaust gas heterogeneous oxidation processing method is provided.
To achieve the above object, the following technical solutions are proposed by the present invention:
A kind of VOCs exhaust gas heterogeneous oxidation processing method, comprising steps of
Exhaust gas is sent into reactor by entrance, carries out turbulent processing by turbulence plate；
Exhaust gas after turbulent flow is upwardly into the catalytic treatment layer of reactor, so that composite catalyst doping enters in exhaust gas；
Catalysis oxidation is passed through gaseous oxidant, two kinds of oxygen from reactor top ejecting liquid oxidant, while below reactor
Agent carries out heterogeneous oxidation processing with the exhaust gas containing catalyst, real by the oxidation operation in exhaust gas at carbon dioxide or water
Existing exhaust-gas treatment.
The liquid oxidizer is liquid oxygen.
The reactor includes shell, and inside is disposed with reaction packing layer, catalyst filling layer, turbulent flow from top to bottom
Plate, shell lower end are respectively arranged with air inlet, and the first oxidant is sent into mouth, and the second oxidant is sent into mouth, and case top is equipped with
The mixed aqueous solution of oxidant is sent into spray piping by water pump by spray head.
Compared with prior art, a kind of VOCs exhaust gas heterogeneous oxidation processing method that the present invention discloses, using a variety of oxidations
Agent and oxidised form generate a large amount of HO certainly under the catalytic condition of catalysis material in reactor by being overlapped mutually mutual catalysis
It is carried out by the organic matter in base, with exhaust gas without selection chain reaction, so that organic matter exhaustive oxidation is realized the drop of organic pollutant
Solution removal.
Detailed description of the invention
Fig. 1 is the structure chart of heterogeneous oxidation reactor of the present invention.
Specific embodiment
Below in conjunction with attached drawing of the invention, clear, complete description is carried out to the technical solution of the embodiment of the present invention.
A kind of disclosed VOCs exhaust gas heterogeneous oxidation processing method, comprising steps of
Turbulent flow, exhaust gas are sent into reactor by entrance, carry out turbulent processing by turbulence plate；
Exhaust gas after composite catalyzing, turbulent flow is upwardly into the catalytic treatment layer of reactor, gives up so that composite catalyst doping enters
In gas；
Catalysis oxidation is passed through gaseous oxidant, two kinds of oxygen from reactor top ejecting liquid oxidant, while below reactor
Agent carries out heterogeneous oxidation processing with the exhaust gas containing catalyst, real by the oxidation operation in exhaust gas at carbon dioxide or water
Existing exhaust-gas treatment.
The liquid oxidizer is liquid oxygen.
As shown in Figure 1, the reactor includes shell 1, inside is disposed with reaction packing layer 2 from top to bottom, is catalyzed
Agent packing layer 3, turbulence plate 4, housing bottom are respectively arranged with air inlet 5, and the first oxidant is sent into mouth 6, and the second oxidant is sent
Entrance 7, case top are equipped with spray head 8, and the mixed aqueous solution of oxidant is sent into spray piping 9 by water pump.
The working principle of the invention: it is combined, is passed through in oxidation reaction tower, in catalyst using two or more oxidants
The lower hydroxyl radical free radical (OH) for forming more strong oxidizing property of effect, OH- oxidizing potential reach 2.8V, can will be almost all of organic
Object is oxidized to CO2And H2O.Rich in OH- and the spray liquid of oxidant pump be promoted to tower top atomizing spray and under and tower lower part into
The exhaust gas entered carries out countercurrent reaction in inner-tower filling material area, removes the organic pollutant in removing exhaust gas；On the other hand, exhaust gas in tower,
It is contacted during flowing from the bottom up with the catalytic filler in tower, some organic pollutants in exhaust gas can be adsorbed on filler table
Face can incite somebody to action under catalytic action when spray liquid of the height containing OH and oxidant is under top spray and catalytic filler is contacted
The organic pollutant of filler surface absorption carries out oxygenolysis, has synchronously completed the regeneration of catalytic filler, has realized catalytic filler
" organic matter absorption-oxidation operation is decomposed, filler regeneration-organic matter adsorbs again " cyclic process.Meanwhile it is useless to reduce
Gas treatment cost, alternative promoted in tower bottom spray liquid circulating pump introduce liquid-phase catalyst and simple ultrasound in cyclic process
Device makes to form the removal of more hydroxyl radical free radicals (OH) for the organic pollutant in oxidizing tower, reaction in spray liquid
Equation: OH+CxHyOz → CO2+H2O。
Technology contents and technical characteristic of the invention have revealed that as above, however those skilled in the art still may base
Make various replacements and modification without departing substantially from spirit of that invention, therefore, the scope of the present invention in teachings of the present invention and announcement
It should be not limited to the revealed content of embodiment, and should include various without departing substantially from replacement and modification of the invention, and be this patent Shen
Please claim covered.
Claims (3)
1. a kind of VOCs exhaust gas heterogeneous oxidation processing method, it is characterised in that include the following steps:
Exhaust gas is sent into reactor by entrance, carries out turbulent processing by turbulence plate；
Exhaust gas after turbulent flow is upwardly into the catalytic treatment layer of reactor, so that composite catalyst doping enters in exhaust gas；
From reactor top ejecting liquid oxidant, while gaseous oxidant is passed through below the reactor, two kinds of oxidants with contain
There is the exhaust gas of catalyst to carry out catalytic oxidation treatment, by the oxidation operation in exhaust gas at carbon dioxide or water, realizes at exhaust gas
Reason.
2. a kind of VOCs exhaust gas heterogeneous oxidation processing method according to claim 1, it is characterised in that: the liquid oxidation
Agent is liquid oxygen.
3. a kind of VOCs exhaust gas heterogeneous oxidation processing method according to claim 1, it is characterised in that: the reactor packet
Shell is included, inside is disposed with reaction packing layer, catalyst filling layer, turbulence plate, housing bottom lower end point from top to bottom
It is not provided with air inlet, the first oxidant is sent into mouth, and the second oxidant is sent into mouth, and case top is equipped with spray head, passes through water pump
The mixed aqueous solution of oxidant is sent into spray piping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811579181.2A CN109621708A (en) | 2018-12-24 | 2018-12-24 | A kind of VOCs exhaust gas heterogeneous oxidation processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811579181.2A CN109621708A (en) | 2018-12-24 | 2018-12-24 | A kind of VOCs exhaust gas heterogeneous oxidation processing method |
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| Publication Number | Publication Date |
|---|---|
| CN109621708A true CN109621708A (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811579181.2A Pending CN109621708A (en) | 2018-12-24 | 2018-12-24 | A kind of VOCs exhaust gas heterogeneous oxidation processing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112237838A (en) * | 2020-09-29 | 2021-01-19 | 南京格洛特环境工程股份有限公司 | System and method for deeply treating low-concentration CS2 by heterogeneous catalytic oxidation technology |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107029550A (en) * | 2017-06-07 | 2017-08-11 | 广州联聚节能技术有限公司 | VOCs microwave nano-catalytic decomposing systems and method |
-
2018
- 2018-12-24 CN CN201811579181.2A patent/CN109621708A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107029550A (en) * | 2017-06-07 | 2017-08-11 | 广州联聚节能技术有限公司 | VOCs microwave nano-catalytic decomposing systems and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112237838A (en) * | 2020-09-29 | 2021-01-19 | 南京格洛特环境工程股份有限公司 | System and method for deeply treating low-concentration CS2 by heterogeneous catalytic oxidation technology |
| WO2022068034A1 (en) * | 2020-09-29 | 2022-04-07 | 南京格洛特环境工程股份有限公司 | System and method for advanced treatment of low-concentration cs2 by means of heterogeneous catalytic oxidation technology |
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Application publication date: 20190416 |
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| RJ01 | Rejection of invention patent application after publication |