CN207102266U - A kind of low temperature plasma Coupling Adsorption method processing VOCs and foul gas device - Google Patents
A kind of low temperature plasma Coupling Adsorption method processing VOCs and foul gas device Download PDFInfo
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- CN207102266U CN207102266U CN201720637392.1U CN201720637392U CN207102266U CN 207102266 U CN207102266 U CN 207102266U CN 201720637392 U CN201720637392 U CN 201720637392U CN 207102266 U CN207102266 U CN 207102266U
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Abstract
It the utility model is related to a kind of low temperature plasma Coupling Adsorption method processing VOCs and foul gas device, including the low temperature plasma equipment being sequentially connected and adsorption plant, wherein low temperature plasma equipment includes low-temperature plasma electrical source, discharge of plasma in low temperature unit and reaction of low temperature plasma device, two or more discharge of plasma in low temperature units insert reaction of low temperature plasma device, interval is laid in the medium flow direction, by reaction of low temperature plasma device at intervals of region of discharge and non-discharge area.High energy electron, ion and living radical caused by low temperature plasma can preferential destruction straight-chain hydrocarbons or small molecular organic compounds, can fundamentally solve the problems, such as adsorbent to VOCs and foul gas adsorptive selectivity difference.
Description
Technical field
Exhaust-gas treatment field is the utility model is related to, specifically, is related at a kind of low temperature plasma Coupling Adsorption method
Manage the device of VOCs and foul gas.
Background technology
Petroleum refining is one of key industry for producing odor pollution, and foul gas caused by Petrochemical Enterprises production process is not
But containing odor pollutions such as hydrogen sulfide, mercaptan, thioether, ammonia, while also contain a large amount of oil gas and organic pollution, its complicated work
Skill is reacted, and a large amount of offensive, sensitive to people odorants can be produced, wherein endangering the presence or absence of larger machine and organic sulfide
Thing, ammonia and organic amine, aromatic hydrocarbons, phenols and organic acid etc..At present, odor polluting source includes discharging waste gas, nothing in a organized way
Tissue discharge gas and storage tank tidal air.
In recent years, stepping up with citizen's awareness of environment protection and health, start to device waste gas and Waste Water Treatment
The pollutant of release gas is administered, to solve the problems, such as that odor pollution disturbs residents.The conventional the methods of odour control in scene has oxidation
Method, combustion method, absorption process, adsorption method and bioremediation etc..Because industrial volatile organic matter (VOCs) is useless
The limitation of the complexity and single Treatment process of gas composition and property, under many circumstances, often it is difficult to using monotechnics
Reach improvement to require, and it is uneconomical.Using the advantage of different units Treatment process, can not only be met using combined treatment technique
Emission request, while the operating cost of cleaning equipment can be reduced.
In order to be directed to low-temperature plasma in exhaust-gas treatment using these toxic and harmful gas of Low Temperature Plasma Treating, people
The mechanism of action of body and the method for generation low temperature plasma have carried out substantial amounts of basic research.Energy in low temperature plasma
Transmit substantially：Electronics obtains energy from electric field, and energy is converted into the interior energy and kinetic energy of molecule by colliding, obtains energy
Molecule be excited, at the same time, moieties are ionized, and these particles activated mutually collide a series of multiple so as to cause
Miscellaneous physical-chemical reaction.Because a large amount of active particles for being rich in plasma for example ion, electronics, excitation state atom and molecule
And free radical etc., so as to provide condition by chemical reaction handling VOCs and odorant for plasma technique.Although specially
Sharp CN204429064U, CN204380489U, CN201830541U, CN103418217B, CN204485611U,
CN203002160U is referred to plural serial stage electric discharge, but the technical scheme of these patents simply simply increases plasma
The sum of series total power input of body generator, discharge time length are ineffective.
On the technology of charcoal absorption processing organic exhaust gas, patent CN204543922U be (a kind of novel improved structure
Absorbent charcoal adsorber), CN204619676U (a kind of active carbon adsorption equipment), a kind of CN104785025A (activated carbon filterings
Case), CN204522680U (cyclic active charcoal adsorbent equipment), a kind of CN104888702A (bacteriostasis, and deodorization modified activated carbon absorption
Agent), CN104923180A (a kind of acticarbon of absorbing gasoline steam) etc. be all discussed, still, above-mentioned technology
The shortcomings that be can not break through wished in Fleder and Lang Gemiaoer absorption empirical equations in the organic matter that discloses in activated carbon surface
Dynamic absorption and parsing law, i.e., the gaseous phase partial pressure of pollutant can not be adsorbed on the activated carbon after being less than certain value, therefore make
Realize NMHC as defined in GB31571-2015 less than 120mg/m3's with charcoal absorption processing high-concentration organic waste gas
Emission limit, it is therefore desirable to which multistage active carbon adsorption equipment, investment and operating cost will be exponentially increased.In addition, activated carbon
It is larger to the different component adsorption capacity difference in same waste gas activated carbon to be also present in absorption, it is difficult to realizes that GB31571-2015 is advised
Fixed benzene is less than 4mg/m3Emission limit.
Utility model content
For the above-mentioned problems in the prior art, the utility model is adsorbed using low temperature plasma coupled reactive charcoal
Device, can fall originally to be unfavorable for efficient degradation charcoal absorption the less straight-chain hydrocarbons of molecular weight, cycloalkanes alkane degradation and mercaptan,
Thioether class odorant, so as to improve Activated Carbon toward VOCs-Containing Exhausts adsorption effect.
To achieve the above object, the utility model provides a kind of low temperature plasma Coupling Adsorption method processing VOCs and stench
The device of gas, including the low temperature plasma equipment and adsorption plant being sequentially connected, low temperature plasma equipment bag therein
Low-temperature plasma electrical source, discharge of plasma in low temperature unit and reaction of low temperature plasma device are included, it is two or more
Discharge of plasma in low temperature unit inserts reaction of low temperature plasma device, and interval is laid in the medium flow direction, by low temperature etc.
Plasma reactor is at intervals of region of discharge and non-discharge area.
Preferably, the surge tank and dehumidifier being sequentially connected are installed on the suction line of low temperature plasma equipment.
Preferably, air distribution pipeline is set on the suction line of surge tank.
Preferably, the spacing distance that discharge of plasma in low temperature unit is laid in the medium flow direction can be as needed
Be adjusted, the discharge type of discharge cell is corona discharge, single dielectric barrier discharge, double-dielectric barrier discharge, glow discharge,
Any one in radio frequency discharge.
Preferably, low-temperature plasma electrical source is any one in high voltage power supply, dc source, the pulse power, and electric
The power output in source can be adjusted as needed.
Preferably, low-temperature plasma generator is any one in grid type, spool formula or printed line formula.
Preferably, catalytic ozonation agent, ozone-decomposing agent or work can be filled in the region of discharge and non-discharge area
Property charcoal.
Preferably, the discharge of plasma in low temperature equipment can use two or more air channels in parallel.
Preferably, two pairs or more electrode can be set in every group of discharge cell.
Preferably, the adsorbent filled in the adsorption plant is appointing in activated carbon, zeolite or macromolecule organic material
Meaning is a kind of.
Preferably, the air inlet of fixed gas outlet line caused by adsorbent reactivation and air distribution pipeline in the adsorption plant
Connection.
The beneficial effects of the utility model：
(1) multigroup discharge cell is disposed with the discharge of plasma in low temperature equipment that the utility model uses, by right
VOCs and the electric discharge of foul gas interval, can reduce the compound probability of active particle in low-temperature plasma generator, improve and live
Degradation efficiency of the property particle to pollutant；
(2) low temperature plasma coupled reactive charcoal adsorbent equipment is used so that the organic waste through Low Temperature Plasma Treating
Number of components in gas is minimized, and the molecular weight that especially can fall originally to be unfavorable for charcoal absorption with efficient degradation is less straight
Chain hydrocarbon, cycloalkanes alkane degradation and mercaptan, thioether class odorant, so as to improve adsorbent to organic exhaust gas adsorption effect；
(3) low temperature plasma coupled reactive charcoal adsorbent equipment, high energy electron, ion caused by low temperature plasma are used
The adsorbent reactivation of adsorption saturation can be made with living radical, significantly extend the activated carbon replacement cycle, while adsorbent (such as it is living
Property carbon-supported catalyst) high energy electron, ion and living radical reaction bed caused by low temperature plasma can be used as, significantly improve
Degradation effect.
(4) fixed gas outlet line is connected with the air inlet of air distribution pipeline caused by adsorbent reactivation in adsorption plant, solution
The problem of absorbing process fixed gas of having determined is difficult to qualified discharge.
The utility model can be used for the organic exhaust gas and stench that concentration for the treatment of is less than 100ppm less than 6000ppm and hydrogen sulfide
Gas, the air inflow of device can be in 1-100000Nm3Between/h.
Brief description of the drawings
Fig. 1 is the technological process that low temperature plasma Coupling Adsorption method described in the utility model handles VOCs and foul gas
Figure；
Fig. 2 is the schematic diagram of compartment low-temperature plasma generator described in the utility model.
Label declaration：
1-- entrance total hydrocarbon analyzers；2-- waste gas stream gauge；3-- surge tanks (or pipe-line mixer)；
4-- air distribution blower fans；5-- air electric butterfly valves；6-- mass air flow sensor；
7-- dehumidifiers；8-- waste gas electric butterfly valves；9-- low temperature plasma equipment；
10-- blower fans；11-- ozonolysed towers；12-- adsorption towers；
13-- exports total hydrocarbon analyzer；14- reaction of low temperature plasma devices；15- low-temperature plasma electrical sources；
16- terminal boxes；17- forms；18- sewage draining exits；19- blow valve ports.
Embodiment
Embodiment 1
As shown in figure 1, VOCs and foul gas, in the presence of centrifugal blower, a part of waste gas is by online FID total hydrocarbons point
The internal pump suction detector detection exhaust gas concentration of analyzer 1, VOCs and foul gas sequentially enter surge tank 3, dehumidifier 7, low
After isothermal plasma equipment 9, into 12 further adsorption treatment of adsorption tower, qualified discharge is realized afterwards.The waste gas of surge tank 3
Diluent air air inlet is set on suction line, when exhaust gas concentration exceedes the value of setting up defences of compartment discharge of plasma in low temperature equipment
When, open diluent air air inlet；Bypass is provided with before the post plasma equipment of surge tank 3, waste gas after dilution exceedes interval
Formula discharge of plasma in low temperature equipment set up defences value when, by waste gas from bypass extract out.
Dehumidifier operating condition：35 DEG C of summer dehumidifier inlet temperature, outlet exhaust temperature are 45 DEG C, relative humidity 30-
90%；10 DEG C of winter dehumidifier outlet exhaust temperature, outlet exhaust temperature are 20 DEG C, relative humidity 30-90%.
Two air channel parallel connections of low-temperature plasma equipment, as shown in Fig. 2 every group of discharge cell sets a pair of electrodes, compartment
The condition of work of bi-medium to block low-temperature plasma generator is：Waste gas is in the speed that plasma generation area passes through
0.1m/s, the time by non-discharge area are 50s, and discharge voltage 20kV, processing tolerance is 200m3/h。
Adsorption tower diameter 1.0m, height 1.5m, bottom are disposed with uniform qi-emitting hole, and waste gas is up flowed through by qi-emitting hole
It is degraded inside adsorption tower, waste gas residence time in adsorption tower is more than 60s, and adsorbent is activated carbon, the regeneration of adsorbent
Mode desorbs for steam.
Organic volatile waste gas caused by certain sewage from oil refinery processing unit is taken to be tested, before experiment, benzene contains in waste gas
Measure as 800 mg/Nm3, after being degraded by above-mentioned compartment low-temperature plasma generator, the content of benzene is 52mg/Nm3, through inhaling
The content of benzene is 3.5mg/Nm in waste gas after attached tower processing3, the regeneration period of adsorbent is 60 days.
Comparative example 1：
According to the condition and step described in embodiment 1, simply by the double gas barrier low-temperature plasma equipment replacements of compartment
It is identical with the present invention for the General low temperature plasma apparatus of single dielectric impedance, other parameters.
Organic exhaust gas same as Example 1 is taken to be tested, after being degraded by low-temperature plasma generator, benzene contains
Measure as 168mg/Nm3, finally the content of benzene is 20mg/Nm in the waste gas after adsorption tower is handled3, the regeneration period of adsorbent is
20 days.
Embodiment 2
According to the condition and step described in embodiment 1, difference is, the three air channel parallel connections of low-temperature plasma equipment,
Every group of discharge cell setting two pairs of electrodes, the setup parameter of compartment low-temperature plasma generator are as follows：By 2 bi-medium to block
Discharge arrays, grating type low-temperature plasma generator interval are laid, total power input 360W, and the speed of gas flowing is 17m/
S, the time by non-discharge area are 0.1s.
Adsorbent in adsorption tower is zeolite, and the regeneration of adsorbent is vacuum desorption.
Organic volatile gas waste gas caused by certain sewage from oil refinery processing unit is taken to be tested, before experiment, mercaptan in waste gas,
The odour concentration content of the foul gas such as thioether is 10000 (dimensionless), is dropped by above-mentioned compartment low-temperature plasma generator
After solution, the odour concentration content of foul gas is 1000 (dimensionless), and the odour concentration content after adsorption tower is handled is 80
(dimensionless), the regeneration period of adsorbent is 120 days.
Comparative example 2
According to the condition and step described in embodiment 2, simply the equipment replacement of compartment low-temperature plasma is hindered for single medium
The General low temperature plasma apparatus of gear, other parameters are same as Example 2.
Foul gas same as Example 2 is taken to be tested, after being degraded by low-temperature plasma generator, effluvium
Bulk concentration content is 3500 (dimensionless), and finally foul gas levels are 1200 (dimensionless) after adsorption tower is handled, and is inhaled
Attached dose of regeneration period is 35 days.
Embodiment 3
According to the condition and step described in embodiment 1, difference is, the setting of compartment low-temperature plasma generator
Parameter is as follows：3 corona discharges, spool formula low-temperature plasma generator are spaced laying in gas flow direction, it is total defeated
Enter power 360W, the speed of gas flowing is 5m/s, and gas and each plasma generator time of contact are 0.1s, and gas exists
The non-discharge area residence time is 3s.
Organic exhaust gas Volatile Gas caused by certain sewage from oil refinery processing unit is taken to be tested, before experiment, total hydrocarbon in waste gas
Content is 760mg/Nm3, after being degraded by above-mentioned compartment low-temperature plasma generator, total hydrocarbon content 82mg/Nm3, warp
Total hydrocarbon content is 25mg/Nm in waste gas after adsorption tower adsorption treatment3, the regeneration period of adsorbent is 3 months.
Comparative example 3
According to the condition and step described in embodiment 3, simply the equipment replacement of compartment low-temperature plasma is hindered for single medium
The General low temperature plasma apparatus of gear, other parameters are same as Example 3.
Organic exhaust gas same as Example 3 is taken to be tested, after being degraded by low-temperature plasma generator, in waste gas
Total hydrocarbon content is 275mg/Nm3, total hydrocarbon content is 163mg/Nm in the waste gas after adsorption tower adsorption treatment3, the regeneration of adsorbent
Cycle is 45 days.
Comparative example 4
Conventional absorbtion method is adsorbed using single adsorption tanks (acticarbon), take with embodiment 3 without
Identical organic exhaust gas is tested after the degraded of low-temperature plasma body unit, i.e., total hydrocarbon content is 82mg/Nm3, without low temperature etc.
Adsorption tanks adsorption treatment is directly entered after the degraded of plasma discharge unit, the regeneration period of adsorption tanks is 30 days.
It can be seen that from embodiment 1-3 and comparative example 1-4：Handled using compartment low temperature plasma Coupling Adsorption method
VOCs and foul gas, wherein compartment low temperature plasma use two or more discharge cells, certain in total power consumption
In the case of, compared to other continuous discharge plasmon coupling absorption methods, the former is to VOCs and the degradation efficiency of foul gas
Greatly improve, the regeneration period of adsorbent extends more than one times.
Claims (11)
1. a kind of low temperature plasma Coupling Adsorption method processing VOCs and foul gas device, including low temperature being sequentially connected etc.
Gas ions equipment and adsorption plant, it is characterised in that low temperature plasma equipment include low-temperature plasma electrical source, low temperature etc. from
Daughter discharge cell and reaction of low temperature plasma device, two or more discharge of plasma in low temperature units insert low temperature
Plasma reactor, in the medium flow direction interval lay, by reaction of low temperature plasma device at intervals of region of discharge and
Non-discharge area.
2. a kind of low temperature plasma Coupling Adsorption method processing VOCs according to claim 1 and foul gas device,
Characterized in that, the surge tank and dehumidifier being sequentially connected are installed on the suction line of low temperature plasma equipment.
3. a kind of low temperature plasma Coupling Adsorption method processing VOCs according to claim 2 and foul gas device,
Characterized in that, air distribution pipeline is set on the suction line of surge tank.
4. a kind of low temperature plasma Coupling Adsorption method processing VOCs according to claim 1 and foul gas device,
Characterized in that, the spacing distance that discharge of plasma in low temperature unit is laid in the medium flow direction can be carried out as needed
Regulation, the discharge type of discharge cell is corona discharge, single dielectric barrier discharge, double-dielectric barrier discharge, glow discharge, radio frequency
Any one in electric discharge.
5. a kind of low temperature plasma Coupling Adsorption method processing VOCs according to claim 1 and foul gas device,
Characterized in that, low-temperature plasma electrical source is any one in high voltage power supply, dc source, the pulse power, and power supply
Power output can be adjusted as needed.
6. a kind of low temperature plasma Coupling Adsorption method processing VOCs according to claim 1 and foul gas device,
Characterized in that, low-temperature plasma generator is any one in grid type, spool formula or printed line formula.
7. a kind of low temperature plasma Coupling Adsorption method processing VOCs according to claim 1 and foul gas device,
Characterized in that, catalytic ozonation agent, ozone-decomposing agent or activated carbon can be filled in the region of discharge and non-discharge area.
8. a kind of low temperature plasma Coupling Adsorption method processing VOCs according to claim 1 and foul gas device,
Characterized in that, the discharge of plasma in low temperature equipment can use two or more air channels in parallel.
9. a kind of low temperature plasma Coupling Adsorption method processing VOCs according to claim 1 and foul gas device,
Characterized in that, two pairs or more electrode can be set in every group of discharge cell.
10. a kind of low temperature plasma Coupling Adsorption method processing VOCs according to claim 1 and foul gas device,
Characterized in that, the adsorbent filled in the adsorption plant is any one in activated carbon, zeolite or macromolecule organic material
Kind.
11. a kind of low temperature plasma Coupling Adsorption method processing VOCs according to claim 1 and foul gas device,
Characterized in that, fixed gas outlet line is connected with the air inlet of air distribution pipeline caused by adsorbent reactivation in adsorption plant.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720637392.1U CN207102266U (en) | 2017-06-02 | 2017-06-02 | A kind of low temperature plasma Coupling Adsorption method processing VOCs and foul gas device |
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| CN201720637392.1U CN207102266U (en) | 2017-06-02 | 2017-06-02 | A kind of low temperature plasma Coupling Adsorption method processing VOCs and foul gas device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108636085A (en) * | 2018-04-24 | 2018-10-12 | 北京宜泽环保科技有限责任公司 | A kind of high-pressure discharging device and exhaust treatment system |
| CN108745328A (en) * | 2018-05-28 | 2018-11-06 | 上海大学 | A kind of New Regenerated method of volatile organic contaminant adsorbent |
| CN116328489A (en) * | 2023-04-04 | 2023-06-27 | 青岛诺诚化学品安全科技有限公司 | Treatment equipment and method for distributed organic waste gas |
-
2017
- 2017-06-02 CN CN201720637392.1U patent/CN207102266U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108636085A (en) * | 2018-04-24 | 2018-10-12 | 北京宜泽环保科技有限责任公司 | A kind of high-pressure discharging device and exhaust treatment system |
| CN108745328A (en) * | 2018-05-28 | 2018-11-06 | 上海大学 | A kind of New Regenerated method of volatile organic contaminant adsorbent |
| CN108745328B (en) * | 2018-05-28 | 2022-07-12 | 上海大学 | Regeneration method of volatile organic pollutant adsorbent |
| CN116328489A (en) * | 2023-04-04 | 2023-06-27 | 青岛诺诚化学品安全科技有限公司 | Treatment equipment and method for distributed organic waste gas |
| CN116328489B (en) * | 2023-04-04 | 2024-01-26 | 青岛诺诚化学品安全科技有限公司 | Treatment equipment and method for distributed organic waste gas |
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