CN208512225U - A kind of low-temperature plasma processing unit of waste gas containing benzene - Google Patents
A kind of low-temperature plasma processing unit of waste gas containing benzene Download PDFInfo
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- CN208512225U CN208512225U CN201820863317.1U CN201820863317U CN208512225U CN 208512225 U CN208512225 U CN 208512225U CN 201820863317 U CN201820863317 U CN 201820863317U CN 208512225 U CN208512225 U CN 208512225U
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Abstract
The utility model discloses a kind of low-temperature plasma processing units of waste gas containing benzene, including drier and emission-control equipment, the side of the emission-control equipment is equipped with ventilation butterfly valve, the emission-control equipment is fixedly connected by ventilation butterfly valve with drier, the inlet end of the drier is equipped with exhaust fan, and the inside of drier is equipped with moisture detector, the outlet side of the emission-control equipment is equipped with air exhauster, and the inside of the emission-control equipment is equipped with several primary filtration networks.The utility model borrows the cordierite honeycomb ceramic carrier of surface coating MOF material, improve the adsorption efficiency of benzene exhaust air, operating cost is reduced simultaneously, utilize dielectric barrier discharge combination MOF material adsorption treatment benzene exhaust air, exhaust treatment efficiency is high, and by-product is few, and secondary pollution is small, low-temperature plasma combination absorption method reaches 98% to the removal efficiency of benzene exhaust air, and benzene mass concentration in outlet exhaust can be made to be reduced to 4mg/m3Hereinafter, being widely used in the exhaust-gas treatment of petrochemical industry.
Description
Technical field
The utility model relates to waste gas treatment equipment technical field, the low-temperature plasma of specially a kind of waste gas containing benzene is handled
Device.
Background technique
The reason of China's haze weather is increasingly severe, leads to gray haze, other than fuel oil, the coal-fired pollution generated, more
It is the pollution from volatile organic compounds VOC.
The benzene homologues (toluene, dimethylbenzene etc.) industrially discharged are the important pollutants of volatile organic compounds, and benzene is
A kind of coal tar distillation or the product of petroleum cracking, colourless, transparent, the liquid with aromatic odor.Toluene and dimethylbenzene are benzene
Methyl-derivatives, they are to the great toxicity of various life forms.When the 3 benzene waste gas in factory permeates into surrounding resident area, work as suction
When entering high concentration " triphen " steam, the redox function of human inner cell is influenced, using reducing cell activity, the conjunction of ATP
At reduction, inhibit the secretion of acetylcholine and cause to anaesthetize, so these exhaust gas must be handled, to reduce the harm to resident.
Active carbon adsorption is generally used for waste gas containing benzene at present, although this method initial investment is few, running cost
With height, 1 ton of benzo pollutants of every absorption need to consume about 3 tons of active carbons, and the adsorption efficiency of active carbon is low, after using
The problem of causing secondary pollution to environment when active carbon processing.
Utility model content
The purpose of this utility model is to provide a kind of low-temperature plasma processing units of waste gas containing benzene, solve existing contain
Benzene exhaust air generally uses active carbon adsorption, and operating cost is high, 1 ton of benzo pollutants of every absorption, needs to consume about 3 tons of activity
The problem of adsorption efficiency of charcoal, active carbon is low, can cause secondary pollution to environment when handling the active carbon after using.
In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of low temperature of waste gas containing benzene
Plasma treatment appts, including drier and emission-control equipment, the side of the emission-control equipment are equipped with ventilation butterfly valve,
The emission-control equipment is fixedly connected by ventilation butterfly valve with drier, and the inlet end of the drier is equipped with exhaust fan,
And the inside of drier is equipped with moisture detector, the outlet side of the emission-control equipment is equipped with air exhauster, the exhaust gas
The inside of processing unit is equipped with several primary filtration networks, and the primary filtration network is arranged close to one end of ventilation butterfly valve,
Several spoilers are additionally provided between several described primary filtration networks, the inner horizontal of the emission-control equipment is equipped with high-voltage electricity
Pole, the space outside of the high-field electrode are coated with grounding electrode, are equipped between the grounding electrode and high-field electrode and stop to be situated between
Matter, the inside of the emission-control equipment are additionally provided with adsorbing mechanism, and the adsorbing mechanism is positioned close to one end of air exhauster.
Preferably, for the primary filtration network at least provided with six, several primary filtration networks are arranged in the spoiler
Middle position.
Preferably, the spoiler is interspersed to high-field electrode direction in interval up and down along primary filtration network.
Preferably, the inside of the emission-control equipment is equipped with one group of fixed frame, and the grounding electrode is arranged in fixed frame
Inside.
Preferably, it is 6mm that the grounding electrode and high-field electrode, which are all made of diameter, and length is the stainless steel electrode of 500mm,
The block media uses wall thickness for the quartz ampoule of 20mm.
Preferably, the grounding electrode and high-field electrode are distributed in matrix from left to right from top to bottom, up and down phase
Spacing between the adjacent grounding electrode is 10mm.
Preferably, the main body of the adsorbing mechanism uses cordierite honeycomb ceramic carrier, and the cordierite honeycomb ceramic carries
The outer surface of body is equipped with one layer of MOF material, and the inside of cordierite honeycomb ceramic carrier sets that there are two upper and lower perforative through slot, institutes
The inside of through slot is stated filled with activated-charcoal column.
Compared with prior art, the utility model has the beneficial effects that the utility model
(1) dosage for reducing conventional carbon borrows the cordierite honeycomb ceramic carrier of surface coating MOF material, improves
The adsorption efficiency of benzene exhaust air, while reducing operating cost, using dielectric barrier discharge combination MOF material adsorption treatment benzene exhaust air,
Exhaust treatment efficiency is high, and by-product is few, and secondary pollution is small.
(2) according to experimental investigation, plasma treatment effeciency highest, low temperature etc. when benzene exhaust air relative humidity is percent 20
Ions binding absorption method reaches 98% to the removal efficiency of benzene exhaust air, and benzene mass concentration in outlet exhaust can be made to be reduced to 4mg/m3
Hereinafter, being widely used in the exhaust-gas treatment of petrochemical industry.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model entirety；
Fig. 2 is the top view of the utility model adsorbing mechanism.
In figure: 1- exhaust fan, 2- drier, 3- moisture detector, 4- ventilation butterfly valve, 5- emission-control equipment, 6- flow-disturbing
Plate, 7- fixed frame, 8- block media, 9- grounding electrode, 10- high-field electrode, 11- adsorbing mechanism, 111- cordierite honeycomb ceramic
Carrier, 112-MOF material, 113- through slot, 114- activated-charcoal column, 12- air exhauster, 13- primary filtration network.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of low-temperature plasma processing dress of waste gas containing benzene
Set, including drier 2 and emission-control equipment 5, the side of emission-control equipment 5 be equipped with ventilation butterfly valve 4, ventilation butterfly valve 4 with
Controller is electrically connected, and emission-control equipment 5 is fixedly connected by butterfly valve 4 of divulging information with drier 2, the inlet end peace of drier 2
Inside equipped with exhaust fan 1, and drier 2 is equipped with moisture detector 3, and moisture detector 3 measures moisture content and closes on 20%
When, controller is sent the signal to, controller opens ventilation butterfly valve 4, and the outlet side of emission-control equipment 5 is equipped with air exhauster
12, air exhauster 12 and exhaust fan 1 form convection current, and the inside of emission-control equipment 5 is equipped with several primary filtration networks 13, primary
For filter screen 13 using stainless steel filter screens more than 100 mesh, primary filtration network 13 is arranged close to one end of ventilation butterfly valve 4, if
Several spoilers 6 are additionally provided between dry primary filtration network 13, improve the contacting efficiency of exhaust gas and processing unit, exhaust-gas treatment dress
The inner horizontal for setting 5 is equipped with high-field electrode 10, and the space outside of high-field electrode 10 is coated with grounding electrode 9, during grounding electrode 9 is in
The cylindrical shape of hollow structure, high-field electrode 10 are in cylindrical body, and high-field electrode 10 and grounding electrode 9 are coaxial, grounding electrode 9 and high-voltage electricity
Block media 8 is equipped between pole 10, block media 8 is in hollow cylindrical, and the diameter of block media 8 is less than the straight of grounding electrode 9
Diameter, the inside of emission-control equipment 5 are additionally provided with adsorbing mechanism 11, and adsorbing mechanism 11 is positioned close to one end of air exhauster 12.
For primary filtration network 13 at least provided with six, the middle position of several primary filtration networks 13 is arranged in spoiler 6；
Spoiler 6 is interspersed to 10 direction of high-field electrode in interval up and down along primary filtration network 13, and flow-disturbing effect is more preferable；
The inside of emission-control equipment 5 is equipped with one group of fixed frame 7, and the inside of fixed frame 7 is arranged in grounding electrode 9；
It is 6mm that grounding electrode 9 and high-field electrode 10, which are all made of diameter, and length is the stainless steel electrode of 500mm, block media
8 use wall thickness for the quartz ampoule of 2mm；
Grounding electrode 9 and high-field electrode 10 are distributed in matrix from left to right from top to bottom, adjacently electric up and down
Spacing between pole 9 is 10mm；
The main body of adsorbing mechanism 11 uses cordierite honeycomb ceramic carrier 111, and cordierite honeycomb ceramic carrier 111 is to close
Bonding agent is added at cordierite raw material, burns and loses agent, through mixing, pugging, extrusion, drying, fired at 1280~1320 DEG C and
At,
The outer surface of cordierite honeycomb ceramic carrier 111 is equipped with one layer of MOF material 112, and MOF material 112 is a kind of coordination
Polymer has three-dimensional pore structure, and generally using metal ion as tie point, it has high porosity, low-density, Large ratio surface
Product, duct rule, aperture is adjustable and topological structure diversity and the advantages that Scalability, and cordierite honeycomb ceramic carrier
111 inside is set there are two upper and lower perforative through slot 113, and the inside of through slot 113 is filled with activated-charcoal column 114.
Working principle: after the processing unit installs, when handling exhaust gas, exhaust fan 1 and air exhauster 12 are run,
Convection current is formed, industrial waste gas containing benzene is pumped into drier 2 and controls its relative humidity by exhaust fan 1, when moisture detector 3 is shown
Index sends the signal to controller when being 20% or so, starts ventilation butterfly valve 3 by controller and lets pass, in after discharge region
Hydrone is ionized, and is produced-OH free radical, is conducive to the degradation of benzene, because vapor is electronegative gas, in region of discharge
Interior to capture high energy electron, with the increase of humidity, the high energy electron of consumption is also more and more, when humidity is 20%, at benzene
Reason efficiency is optimal, and industrial waste gas containing benzene enters the inside of emission-control equipment 5, and primary filtration network 13 filters out in exhaust gas
Large granular impurity, exhaust gas have fully ensured that contact of the exhaust gas with processing unit through interval-staggered 6 flow-disturbing of spoiler, can
To improve the treatment effect of exhaust gas, high-field electrode 10 and grounding electrode 9 are discharge cell, and 8 barrier discharge channel of block media is situated between
Matter barrier discharge generates benzene molecular in the high energy particles, with exhaust gas such as a large amount of electronics, free radical and generates collision, it is caused to be oxidized,
With the increase of discharge frequency, the quantity of high energy electron and group all increases therewith, the collision frequency of benzene molecular and high energy particle
Increase, to improve degradation efficiency, finally combines activated-charcoal column 114 to carry out adsorption treatment, MOF to benzene exhaust air by MOF material 112
Material 112 has that high porosity, low-density, bigger serface, duct rule, aperture is adjustable and topological structure diversity and can
The advantages that cutting property, treated, and exhaust gas is discharged by air exhauster 12.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
Claims (7)
1. a kind of low-temperature plasma processing unit of waste gas containing benzene, including drier (2) and emission-control equipment (5), feature
Be: the side of the emission-control equipment (5) is equipped with ventilation butterfly valve (4), and the emission-control equipment (5) passes through ventilation butterfly
Valve (4) is fixedly connected with drier (2), and the inlet end of the drier (2) is equipped with exhaust fan (1), and drier (2) is interior
Portion is equipped with moisture detector (3), and the outlet side of the emission-control equipment (5) is equipped with air exhauster (12), at the exhaust gas
The inside of reason device (5) is equipped with several primary filtration networks (13), and the primary filtration network (13) is arranged close to ventilation butterfly
One end of valve (4) is additionally provided with several spoilers (6), the emission-control equipment between several described primary filtration networks (13)
(5) inner horizontal is equipped with high-field electrode (10), and the space outside of the high-field electrode (10) is coated with grounding electrode (9), institute
It states and is equipped with block media (8) between grounding electrode (9) and high-field electrode (10), the inside of the emission-control equipment (5) is also set
Have adsorbing mechanism (11), the adsorbing mechanism (11) is positioned close to one end of air exhauster (12).
2. a kind of low-temperature plasma processing unit of waste gas containing benzene according to claim 1, which is characterized in that the primary
At least provided with six, the spoiler (6) is arranged in the middle position of several primary filtration networks (13) filter screen (13).
3. a kind of low-temperature plasma processing unit of waste gas containing benzene according to claim 1, which is characterized in that the flow-disturbing
Plate (6) is interspersed to high-field electrode (10) direction in interval up and down along primary filtration network (13).
4. a kind of low-temperature plasma processing unit of waste gas containing benzene according to claim 1, which is characterized in that the exhaust gas
The inside of processing unit (5) is equipped with one group of fixed frame (7), inside of grounding electrode (9) setting in fixed frame (7).
5. a kind of low-temperature plasma processing unit of waste gas containing benzene according to claim 1, which is characterized in that the ground connection
It is 6mm that electrode (9) and high-field electrode (10), which are all made of diameter, and length is the stainless steel electrode of 500mm, the block media (8)
Use wall thickness for the quartz ampoule of 2mm.
6. a kind of low-temperature plasma processing unit of waste gas containing benzene according to claim 1, which is characterized in that the ground connection
Electrode (9) and high-field electrode (10) are distributed in matrix from left to right from top to bottom, the grounding electrode (9) adjacent up and down
Between spacing be 10mm.
7. a kind of low-temperature plasma processing unit of waste gas containing benzene according to claim 1, which is characterized in that the absorption
The main body of mechanism (11) uses cordierite honeycomb ceramic carrier (111), the outer surface of the cordierite honeycomb ceramic carrier (111)
Equipped with one layer of MOF material (112), and the inside of cordierite honeycomb ceramic carrier (111) sets that there are two upper and lower perforative through slots
(113), the inside of the through slot (113) is filled with activated-charcoal column (114).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820863317.1U CN208512225U (en) | 2018-06-05 | 2018-06-05 | A kind of low-temperature plasma processing unit of waste gas containing benzene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820863317.1U CN208512225U (en) | 2018-06-05 | 2018-06-05 | A kind of low-temperature plasma processing unit of waste gas containing benzene |
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| Publication Number | Publication Date |
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| CN208512225U true CN208512225U (en) | 2019-02-19 |
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| CN201820863317.1U Expired - Fee Related CN208512225U (en) | 2018-06-05 | 2018-06-05 | A kind of low-temperature plasma processing unit of waste gas containing benzene |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110559999A (en) * | 2019-08-21 | 2019-12-13 | 中山大学 | preparation method of structured adsorbent based on metal organic framework material |
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2018
- 2018-06-05 CN CN201820863317.1U patent/CN208512225U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110559999A (en) * | 2019-08-21 | 2019-12-13 | 中山大学 | preparation method of structured adsorbent based on metal organic framework material |
| CN110559999B (en) * | 2019-08-21 | 2022-09-27 | 中山大学 | Preparation method of structured adsorbent based on metal organic framework material |
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