CN203829874U

CN203829874U - Adsorption device with built-in electric filter

Info

Publication number: CN203829874U
Application number: CN201420234721.4U
Authority: CN
Inventors: 黄晓峰; 雷环宇
Original assignee: CHANGZHOU XIWU AUTOMATION Co Ltd
Current assignee: CHANGZHOU XIWU AUTOMATION Co Ltd
Priority date: 2014-05-09
Filing date: 2014-05-09
Publication date: 2014-09-17
Anticipated expiration: 2024-05-09

Abstract

The utility model belongs to the technical field of environment protection, and aims to solve the problems of pollution plugging and competitive adsorption of an activated carbon adsorption layer caused by smoke dust and mist in the conventional activated carbon adsorption technology, and provides the adsorption device with the built-in electric filter by combining a specific structure of the adsorption device. The adsorption device with the built-in electric filter comprises a shell, an electric filter module and an adsorption module, wherein the electric filter module is arranged in the center of the shell; the adsorption module is arranged in the shell and is arranged on the outer side of the electric filter module; a high-voltage electrostatic and/or low-temperature plasma module arranged in the cavity in the adsorption device performs pretreatment on the waste gas entering the adsorption device, the smoke dust and the mist in the waste gas are effectively removed; the adsorption module is protected from being polluted; the adsorption capacity of the activated carbon adsorption layer is increased; the service life of the activated carbon adsorption layer is prolonged. According to the adsorption device with the built-in electric filter, the space of equipment is utilized effectively; compared with the conventional process that the electric filter and the adsorption tower are connected in series, the wind resistance is reduced, the cost and the size of the equipment are greatly reduced, and the pipeline design and the installation engineering are also simplified.

Description

The adsorbent equipment of in-built electrical filter

Technical field

The invention belongs to environmental protection technical field, particularly a kind of apparatus and method of industrial waste gas purifying processing.

Background technology

Industrial organic exhaust gas is one of primary pollution source of atmospheric environment, relates to that industry is numerous, composition is complicated, not only serious harm production scene personnel health, and pollute urban air-quality.Industrial organic exhaust gas has Wind Volume, multicomponent, low concentration, feature that fluctuation of operating conditions is large conventionally, and difficulty of governance is also larger.Process industrial organic exhaust gas both at home and abroad and mainly use the methods such as absorption method, absorption process, condensation method, heating power burning method, Production by Catalytic Combustion Process, low-temperature plasma method, distinct methods has feature and applicable elements separately.Utilize the advantage of different units improvement technology, adopt combined treatment technique, not only can improve treatment effeciency and meet emission request, and can reduce the operating cost of cleaning equipment.

Absorption method is traditional VOCs treatment technology, and equipment and process is simple, clean-up effect is better, applies very extensive.Estimate adsorption cleaning equipment and 50% left and right taking adsorption technology current China VOCs treatment equipment as basic integrated equipment accounts for according to " absorption method industrial organic exhaust gas is administered engineering legislation explanation of compilation ".The shortcoming of absorption method is also very outstanding: the one, and adsorb and need regeneration after saturated or change adsorbent; The 2nd, conventional acticarbon water imbibition is strong, in the time processing high humility waste gas, makes absorption property sharp-decay because hydrone occupies active surface.For the industrial waste gas of middle and small scale, widely used is the technical scheme that liquid absorption combines with charcoal absorption, can carry a large amount of mists and moisture secretly from absorption plant, removes and will have a strong impact on adsorption effect and the life-span of active carbon if do not added.

Plasma method is under DC Electric Field, by the free radical isoreactivity particle that aura generates electricity and/or corona discharge produces a large amount of high energy electrons, negative ions, excited state particle and is oxidized by force, make gas molecule ionize, dissociate and excite, chemical bond rupture, and then physics, the chemical reaction of initiation series of complex thoroughly decompose organic matter.Plasma method applied range, decomposition efficiency is high, equipment start-stop is fast, but equipment investment is larger, exists to fire danger and need to control.Corona discharge is modal a kind of gas discharge form, simple in structure, reliable, the organic pollution in can not only waste gas decomposition, and also also fine to the removal effect of stench peculiar smell and flue dust water smoke.

High-pressure electrostatic method is electric demist, the electrostatic precipitation technology of commonly using, and is applicable to process the waste gas with foul smelling peculiar smell and flue dust water smoke.By form high-voltage electrostatic field around discharge electrode, make gas ionization produce a large amount of electronics and negative ion, be adsorbed on the particle of the flue dust water smoke in air-flow, make electrically charged particle do directed movement and be hunted down to receiving electrode under the effect of electric field force.But the energy of high-voltage electrostatic field is lower, generally can not destroy the chemical bond of gas molecule, the liquid-solid particle of carrying secretly in therefore can only captured gas, can not decompose pollutant.

Researcher attempts plasma method to combine with absorption method, so far existing many reports.For example: Chinese patent " for the treatment of the apparatus and method (CN101234211) of municipal utilities foul gas ", proposes a kind of foul gas processing unit being made up of screen pack, plasma reactor, cellular activated carbon bed and blower fan; Chinese patent " low-temperature plasma activated carbon tower (CN201684543U) ", proposes a kind of low-temperature plasma activated carbon tower, is disposed with inlet air plenum, low-temperature plasma catalytic module, charcoal filtering module and goes out air compartment; Chinese patent " indoor air purification method (CN100441233C) that a kind of absorption method combines with low temperature plasma ", waste gas first adsorbs by adsorption bed, then passes through plasma purification.Existing these researchs, just connect plasma method with absorption method, form group technology to improve treatment effeciency.

Summary of the invention

The problem to be solved in the present invention is to overcome flue dust water smoke in existing active carbon adsorption technology to block up and competitive Adsorption problem for the dirt of activated carbon adsorption layer, and in conjunction with the concrete structure of adsorbent equipment, a kind of adsorbent equipment of built-in demister is provided, in existing adsorbent equipment internal cavities, internal high-voltage static and/or low-temperature plasma module, removal enters flue dust, the water smoke in the waste gas of adsorbent equipment, with absorption property and the service life of enhanced activity charcoal adsorption layer.

The technical scheme that the present invention takes is a kind of adsorbent equipment of in-built electrical filter, comprise housing, electrofilter module, adsorption module, described housing is provided with air inlet, air outlet, deflection plate, flow-stopping plate, sewage draining exit, described electrofilter module is arranged at the central authorities of housing, described adsorption module is arranged in housing, the outside of electrofilter module, described housing, electrofilter module, adsorption module, deflection plate and flow-stopping plate form gas channel, make processed waste gas enter described adsorbent equipment from air inlet, first by after electrofilter resume module again by adsorption module processing, flow out from air outlet.Described adsorbent equipment is also provided with sewage draining exit below housing, and the flue dust that electrofilter module is removed, water smoke are discharged.

Described electrofilter module, is high-pressure electrostatic module or low-temperature plasma module, has the different structure forms such as honeycomb fashion, flat and concentric-ring pattern.High-pressure electrostatic module comprises framework, discharge electrode, receiving electrode, dc source and dirt collecting plate, dc source is exported high voltage direct current between discharge electrode and receiving electrode, form high-voltage electrostatic field, drop, particle and aerosol in adsorbed gas, move to the dirt collecting plate that falls into below after receiving electrode, discharge from sewage draining exit.Low-temperature plasma module comprises framework, high-field electrode, earth electrode, power supply and dirt collecting plate, by exporting the high-frequency and high-voltage impulse power supply of 3～30KV, produce corona discharge or aura generating, pollutant in gas is decomposed, also make flue dust in gas, water fog charge simultaneously and be captured, fall into the dirt collecting plate of below, discharge from sewage draining exit.

The adsorbent equipment of the in-built electrical filter that the present invention proposes; in adsorption tower housing, electrofilter is set, the waste gas that enters adsorbent equipment is carried out to pretreatment, effectively remove flue dust, water smoke in waste gas; protection adsorption module is exempted from pollution, has strengthened absorption property and the service life of activated carbon adsorption layer.The present invention has effectively utilized the device space, compared with existing electrofilter, adsorption tower tandem process, has reduced windage, has significantly reduced cost and the volume of equipment, has also simplified pipeline and installing engineering.

Brief description of the drawings

Fig. 1 is the structural representation of existing activated carbon adsorber.

Fig. 2 is the structural representation of the adsorbent equipment of the in-built electrical filter of embodiment 1.

Fig. 3 is the top view of the adsorbent equipment of the in-built electrical filter of embodiment 2.

Fig. 4 is the side view of the adsorbent equipment of the in-built electrical filter of embodiment 2.

Detailed description of the invention

With reference to the explanation of accompanying drawing and following embodiment, be appreciated that object of the present invention, feature and effect.

Fig. 1 is a kind of side view and top view of existing adsorption tower, be provided with housing 101, air inlet 102, air outlet 103, deflection plate 104, flow-stopping plate 105 and activated carbon filter layer 106, described housing 101, deflection plate 104, flow-stopping plate 105 and adsorption filtration layer 106 form gas channel, make processed waste gas enter adsorbent equipment from air inlet 102, after processing by adsorption filtration layer 106, flow out from air outlet 103.Described adsorption tower is also provided with active carbon filler 107 and discharge port 108.

Embodiment 1:

An adsorbent equipment for built-in low-temperature plasma module as shown in Figure 2, comprises housing 201, electrofilter module 209, adsorption module 206, and described housing 201 is provided with air inlet 202, air outlet 203, deflection plate 204, flow-stopping plate 205, sewage draining exit 211.

Described electrofilter module 209 is arranged at the central authorities of housing 201, described adsorption module 206 is arranged at the outside of housing 201 inside, electrofilter module 209, described housing 201, electrofilter module 209, adsorption module 206, deflection plate 204 and flow-stopping plate 205 form gas channel, make processed waste gas enter described adsorbent equipment from air inlet 202, from entering electrofilter resume module, the entrance of electrofilter module 209 leaves from the outlet of electrofilter module, meet after deflection plate 204 stops and pass adsorption module 206, discharge described adsorbent equipment from air outlet 203.Below housing 201, be also provided with sewage draining exit 211, the flue dust that electrofilter module is removed, water smoke are discharged.The adsorbent equipment of in-built electrical filter in the present embodiment, is also provided with active carbon filler 207 and discharge port 208.

Described electrofilter module is low-temperature plasma device, has the different structure forms such as honeycomb fashion, flat and concentric-ring pattern.Shown in accompanying drawing 2 is the line cartridge type corona discharge plasma module of honeycomb arrangement, is arranged on flow-stopping plate 205.Low-temperature plasma module comprises framework, interior line electrode, outside electrode, power supply and dirt collecting plate, produce aura generating by exporting the high-frequency and high-voltage impulse power supply of 3～30KV, pollutant in gas is decomposed, also make flue dust in gas, water fog charge simultaneously and be captured, fall into the dirt collecting plate of below, discharge from sewage draining exit.Interior line electrode is that high-field electrode, outside electrode are earth electrodes.Because electrode directly contacts with discharge gas, electrode easily corrodes, and interior line electrode 210 is fixed on air inlet place by insulated column, is convenient to disassembly, cleaning and replacing.

Low-temperature plasma device in the present embodiment; organic pollution in can not only decomposition gas; improve the exhaust-gas treatment efficiency of adsorbent equipment; and can effectively remove drop entrained in air inlet, particle and aerosol; protection adsorption module is exempted from pollution, has strengthened absorption property and the service life of activated carbon adsorption layer.

Embodiment 2:

An adsorbent equipment for internal high-voltage static module as shown in Figure 3, comprises housing 301, electrofilter module, adsorption module 306, and described housing 301 is provided with air inlet 302, air outlet 303, deflection plate 304, flow-stopping plate 305, sewage draining exit 312.

Described electrofilter module is flat high voltage electrostatic device, comprises framework 311, discharge electrode 310, receiving electrode 309, dc source and dirt collecting plate 313, is arranged at the central authorities of housing 301.Dc source, to output high voltage direct current between discharge electrode 310 and receiving electrode 309, forms high-voltage electrostatic field, and drop, particle and aerosol in adsorbed gas, move to the dirt collecting plate that falls into below after receiving electrode 309, discharges from sewage draining exit 312.

Described adsorption module 306 is arranged at the outside of housing 301 inside, electrofilter module.Described adsorption module 306, is also provided with adsorbent filler 307 and discharge port 308.Adsorption module uses graininess or cellular adsorbent, or the fibrofelt of supported sorbents, and described adsorbent is the one of active carbon, molecular sieve, aluminium oxide, aeroge or Concave-convex clay rod material, or adopts multiple adsorbent mixed packing.

The common composition gas channel of described housing 301, high voltage electrostatic device, adsorption module 306, deflection plate 304 and flow-stopping plate 305, make processed waste gas enter described adsorbent equipment from air inlet 302, enter high voltage electrostatic device from the entrance of high voltage electrostatic device, outlet from high voltage electrostatic device after processing is left, meet after deflection plate 304 stops and pass adsorption module 306, then discharge described adsorbent equipment from air outlet 303.

Distinguishingly, flow-stopping plate 305 is integrated with the end face of housing, is a kind of special case of the present invention, but this mode be unfavorable for processing and the maintenance of equipment.

The adsorbent equipment of described internal high-voltage static module, the lamina tecti of housing 301 can be dismantled, and is convenient to high voltage electrostatic device safeguard and change.

The adsorbent equipment of described internal high-voltage static module, can be horizontal type structure as shown in Figure 3, can be also vertical structure, and dirt collecting plate and sewage draining exit are still arranged at the below of high voltage electrostatic device.

Compared with adsorption module tandem process, the adsorbent equipment of the in-built electrical filter that the present invention proposes has significantly reduced cost and the volume of equipment, has also reduced windage, has simplified pipeline and installing engineering with existing high-pressure electrostatic module.

Claims

1. the adsorbent equipment of an in-built electrical filter, comprise housing, electrofilter module, adsorption module, described housing is provided with air inlet, air outlet, deflection plate, flow-stopping plate, sewage draining exit, it is characterized in that: described electrofilter module is arranged at the central authorities of housing, described adsorption module is arranged in housing, the outside of electrofilter module; Described housing, electrofilter module, adsorption module, deflection plate and flow-stopping plate form gas channel, make processed waste gas from air inlet enters described adsorbent equipment, first by after electrofilter resume module again by adsorption module processing, flow out from air outlet.

2. the adsorbent equipment of in-built electrical filter according to claim 1, is characterized in that: below housing, be provided with sewage draining exit, flue dust, water smoke that electrofilter module is removed are discharged.

3. the adsorbent equipment of in-built electrical filter according to claim 1, is characterized in that: described electrofilter module is high-pressure electrostatic module, comprises framework, discharge electrode, receiving electrode, dc source and dirt collecting plate.

4. the adsorbent equipment of in-built electrical filter according to claim 1, is characterized in that: described electrofilter module is low-temperature plasma module, comprises framework, high-field electrode, earth electrode, power supply and dirt collecting plate.

5. the adsorbent equipment of in-built electrical filter according to claim 4, is characterized in that: the line cartridge type corona discharge plasma module that described electrofilter module is honeycomb arrangement, by the high-frequency and high-voltage impulse power supply of 3～30kV, produces corona discharge or aura generating.

6. the adsorbent equipment of in-built electrical filter according to claim 1, is characterized in that: described electrofilter modular structure is honeycomb fashion, flat or concentric-ring pattern.

7. the adsorbent equipment of in-built electrical filter according to claim 1, is characterized in that: described electrofilter module is arranged on flow-stopping plate.

8. the adsorbent equipment of in-built electrical filter according to claim 1, is characterized in that: described adsorption module uses graininess or cellular adsorbent, or the fibrofelt of supported sorbents.

9. the adsorbent equipment of in-built electrical filter according to claim 8, is characterized in that: described adsorbent is the one of active carbon, molecular sieve, aluminium oxide, aeroge or Concave-convex clay rod material, or adopts multiple adsorbent mixed packing.

10. the adsorbent equipment of in-built electrical filter according to claim 1, is characterized in that: described flow-stopping plate and housing are integrated.