CN207254061U - A kind of plasma waste gas pollution control and treatment system - Google Patents
A kind of plasma waste gas pollution control and treatment system Download PDFInfo
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- CN207254061U CN207254061U CN201721212339.3U CN201721212339U CN207254061U CN 207254061 U CN207254061 U CN 207254061U CN 201721212339 U CN201721212339 U CN 201721212339U CN 207254061 U CN207254061 U CN 207254061U
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Abstract
A kind of plasma waste gas pollution control and treatment system, system are passed sequentially through pipeline and are composed in series by the first spark arrester, first gas filter, dehumidifier, the second spark arrester, plasma reactor, the 3rd spark arrester, second gas filter, ozone decomposed tank, adsorption tanks, the 4th spark arrester.The utility model plasma waste gas pollution control and treatment system, which is opened, stops, and VOCs exhaust gas concentrations is fluctuated adaptable.
Description
Technical field
A kind of plasma waste gas pollution control and treatment system is the utility model is related to, belongs to exhaust gas draining technology field.
Background technology
In PETROLEUM PROCESSING and petrochemical production process, a certain amount of organic exhaust gas, such as ethene are inevitably discharged
The oil separator and neutralization pond in workshop, in process treatment process, loss goes out the exhaust gas containing components such as benzene homologues, alkane, alkene.
If do not recycled such exhaust gas effectively, on the one hand environment is caused seriously to pollute, is on the other hand threatened to health.
Administering the method that volatile organic compounds uses both at home and abroad at present mainly has absorption method, absorption process, catalysis burning
Method etc..These methods were faced using the problems such as equipment is more, experiment is complicated, energy consumption is big.
CN200610047790.4 propositions purify sulfide and hydro carbons in exhaust gas using liquefied ammonia and high boiling organic solvent,
This method treatment effect is obvious, but the ammonia to volatilize easily causes secondary pollution.
CN200710012210.2 is taken off using desulfurization-absorbing process purification storage-tank waste gas pollutant, this method using lye
Sulphide removal, then adsorbs hydro carbons using combine adsorption bed, can purify the pollutant well, but there are saturated hydrocarbons gas
The problem of recovery process is longer.
CN01100559.9 carries out hydro carbons recycling using traditional condensation method, after which uses precooling-deep cooling condensed in two stages,
Condensation temperature reaches -70 DEG C, then, is discharged after activated carbon adsorption.This method can make discharge gas hydro carbons concentration up to standard.The party
The shortcomings that method is that condensation energy consumption is big, acticarbon replacement frequency, and operating cost is high.
On the one hand waste gas pollution control and treatment will consider treatment cost, on the other hand to consider the problem up to standard of emission, existing side
Although method has certain technique effect in some aspects, overall target need to further improve.Particularly contain in processing loss
When having the exhaust gas of complex component, tend not to preferably be purified.
Utility model content
In view of the shortcomings of the prior art, the utility model aims to provide a kind of gas recovery system of economical and efficient.
In order to achieve the above object, the technical solution adopted in the utility model is：A kind of plasma waste gas pollution control and treatment system, system
By the first spark arrester, first gas filter, dehumidifier, the second spark arrester, plasma reactor, the 3rd spark arrester, second
Pneumatic filter, ozone decomposed tank, adsorption tanks, the 4th spark arrester pass sequentially through pipeline and are composed in series.
The plasma reactor is composed in parallel by multigroup low temperature plasma, and low-temperature plasma degradation is used for handling
VOCs and H2S in organic exhaust gas；The adsorption tanks use the adsorption tanks of this area routine, and suitable absorption is set in adsorption tanks
Agent, adsorbent can use sorbing material commonly used in the art, such as activated carbon, zeolite particle, can go out to give up in adsorption process
Remaining VOCs components in gas.
Industrial waste gas enters low-temperature plasma generator, low temperature plasma hair after first passing around filtering, homogeneous, dehumidifying
Raw device degrades pollutant, then is discharged into adsorption tanks after ozone decomposed tank removes the ozone produced, is most inhaled afterwards through adsorption tanks
It is attached it is up to standard after be discharged into exhaust tube.
During work, industrial waste gas enters dehumidifier through the first spark arrester, first gas filter first, is controlled after dehumidifier
Between gas humidity 40%~90% processed, gas enters plasma reactor, plasma reactor via the second spark arrester
By the degradation of organic substances that discharges, subsequent gas enters ozone decomposed tank, subsequent gas via the 3rd spark arrester, second gas filter
Body enters adsorption tanks, and last gas is discharged by the 4th spark arrester.
The exhaust gas can produce ozone in plasma reactor discharges degradation process, and ozone decomposed tank disappears ozone
Remove, adsorption tanks further remove organic matter in industrial waste gas.
In the utility model plasma waste gas pollution control and treatment system, using plasma is by exhaust gas decomposition.Plasma chemistry
In reaction process, electronics obtains energy from electric field first, is transferred energy into by exciting or ionizing in molecule or atom, obtains
The molecule or atom of energy are excited, while have moieties to be ionized, so as to become active group, these active groups afterwards
Stable product and heat are generated after mutually being collided between molecule or atom, active group and active group.In addition, high energy electron
By the stronger materials capture of the electron affinities such as halogen and oxygen, become anion.This kind of anion has chemical living well
Property, play an important role in chemical reaction.In the utility model plasma waste gas pollution control and treatment system, plasma discharging precursor reactant
There are substantial amounts of electronics and living radical, dissociation atom, excited state molecule isoreactivity ion in device space, they have stronger
Reactivity, some chemical reactions being difficult to realize with other means is carried out in plasma reactor.Medium hinders
The electron energy that gear electric discharge produces be 2-20eV, and maximum Energy distribution probability VOCs molecule syntheses and divides between 2-12eV
Required energy is solved in the region of free electron Energy distribution maximum probability.When energy possessed by electronics and VOCs points
Sub internal a certain chemical bond energy is identical or bigger, and the collision of electronics and VOCs molecules will be inelastic collision, electronics by itself
Energy wholly or largely passes to VOCs molecules, these energy are converted into the interior energy of VOCs, therefore contaminant molecule will occur
Ionization, dissociation and excitation.The method can effectively destroy contaminant molecule, and after electronics destroys VOCs structures, VOCs is original
Stability destroyed, the VOCs fragment molecules after ionizing or dissociating are easy to and positive plasma present in gas occurs
Reaction, once, will go on quickly, until end-product formation.
The utility model plasma waste gas pollution control and treatment system, which is opened, stops, and VOCs exhaust gas concentrations is fluctuated adaptable.
Stable it can realize that petrochemical enterprise organic exhaust gas floss hole benzene concentration is less than 4mg/Nm3, operating cost is low, the degree of automation
Height, is realized unattended.A variety of VOCs pollutants such as benzene homologues, alkane, straight-chain hydrocarbons, alkene, phenol, ketone, base can effectively be removed
This realization is degraded, and to the removal efficiency of hydrogen sulfide and ammonia up to more than 99%, non-secondary pollution.
Brief description of the drawings
Fig. 1 is a kind of structure diagram for plasma waste gas pollution control and treatment system that the utility model embodiment provides.
Reference numeral：
1st, exhaust gas 2-1, the first spark arrester 2-2, the second spark arrester 2-3, the 3rd spark arrester
2-4, the 4th spark arrester 3-1, first gas filter 3-2, second gas filter
4th, dehumidifier 5, plasma reactor 6, ozone decomposed tank 7, adsorption tanks
8th, gas up to standard
Embodiment
Technical solutions of the utility model are described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of plasma waste gas pollution control and treatment system by the first spark arrester 2-1, first gas filter 3-1,
Dehumidifier 4, the second spark arrester 2-2, plasma reactor 5, the 3rd spark arrester 2-3, second gas filter 3-2, ozone point
Solution tank 6, adsorption tanks 7, the 4th spark arrester 2-4 pass sequentially through pipeline and are composed in series.
During work, industrial waste gas 1 enters dehumidifier 4 through the first spark arrester 2-1, first gas filter 3-1 first, through except
Between controlling gas humidity 40%~90% after wet machine 4, gas enters plasma reactor 5 via the second spark arrester 2-2, etc.
Plasma reactor 5 by the degradation of organic substances that discharges, subsequent gas via the 3rd spark arrester 2-3, second gas filter 3-2 into
Enter ozone decomposed tank 6, subsequent gas enters adsorption tanks 7, and last gas is discharged by the 4th spark arrester 2-4.
The exhaust gas 1 can produce ozone in plasma reactor 5 discharges degradation process, and ozone decomposed tank 6 is by ozone
Eliminate, adsorption tanks 7 further remove organic matter in industrial waste gas.
Claims (1)
1. a kind of plasma waste gas pollution control and treatment system, system is by the first spark arrester, first gas filter, dehumidifier, the second resistance
Firearm, plasma reactor, the 3rd spark arrester, second gas filter, ozone decomposed tank, adsorption tanks, the 4th spark arrester according to
It is secondary to be composed in series by pipeline；The plasma reactor is composed in parallel by multigroup low temperature plasma；In the adsorption tanks
It is provided with adsorbent；The preferred activated carbon of the adsorbent, zeolite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721212339.3U CN207254061U (en) | 2017-09-20 | 2017-09-20 | A kind of plasma waste gas pollution control and treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721212339.3U CN207254061U (en) | 2017-09-20 | 2017-09-20 | A kind of plasma waste gas pollution control and treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207254061U true CN207254061U (en) | 2018-04-20 |
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| CN201721212339.3U Active CN207254061U (en) | 2017-09-20 | 2017-09-20 | A kind of plasma waste gas pollution control and treatment system |
Country Status (1)
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| CN (1) | CN207254061U (en) |
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2017
- 2017-09-20 CN CN201721212339.3U patent/CN207254061U/en active Active
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Effective date of registration: 20180823 Address after: 100027 Chaoyangmen North Street, Chaoyang District, Chaoyang District, Beijing Co-patentee after: Qingdao Safety Engineering Research Institute of Sinopec Co., Ltd. Patentee after: Sinopec Corp. Address before: 100096 five floor, 2 East Road, building materials City, Haidian District, Beijing. Patentee before: Beijing Puhui Shihua Science and Technology Co., Ltd. |