CN108744883A - Waste gas treatment equipment and its method - Google Patents
Waste gas treatment equipment and its method Download PDFInfo
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- CN108744883A CN108744883A CN201810707643.8A CN201810707643A CN108744883A CN 108744883 A CN108744883 A CN 108744883A CN 201810707643 A CN201810707643 A CN 201810707643A CN 108744883 A CN108744883 A CN 108744883A
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- runner
- electrolytic cell
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- desorption
- waste gas
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- 238000011282 treatment Methods 0.000 title claims abstract description 38
- 239000002912 waste gas Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title description 21
- 239000007789 gas Substances 0.000 claims abstract description 88
- 238000001179 sorption measurement Methods 0.000 claims abstract description 61
- 239000003463 adsorbent Substances 0.000 claims abstract description 56
- 238000003795 desorption Methods 0.000 claims abstract description 53
- 238000010521 absorption reaction Methods 0.000 claims abstract description 28
- 239000003792 electrolyte Substances 0.000 claims abstract description 26
- 238000003672 processing method Methods 0.000 claims abstract description 4
- 239000004744 fabric Substances 0.000 claims description 17
- 238000005192 partition Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 230000005684 electric field Effects 0.000 claims description 6
- 208000002925 dental caries Diseases 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- YADSGOSSYOOKMP-UHFFFAOYSA-N dioxolead Chemical compound O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000002274 desiccant Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 230000005518 electrochemistry Effects 0.000 claims description 2
- 239000012855 volatile organic compound Substances 0.000 abstract description 11
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000009825 accumulation Methods 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 41
- 230000008929 regeneration Effects 0.000 description 11
- 238000011069 regeneration method Methods 0.000 description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 229910001868 water Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- -1 adsorption capacity Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003487 electrochemical reaction Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 3
- 238000005338 heat storage Methods 0.000 description 3
- 229910001410 inorganic ion Inorganic materials 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 239000010815 organic waste Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical group Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- MXEJFXMHLHQKRP-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Pb++] Chemical compound [O--].[O--].[Ti+4].[Pb++] MXEJFXMHLHQKRP-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- XTEGARKTQYYJKE-UHFFFAOYSA-N chloric acid Chemical compound OCl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000007420 reactivation Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/06—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 by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/30—Physical properties of adsorbents
- B01D2253/34—Specific shapes
- B01D2253/342—Monoliths
- B01D2253/3425—Honeycomb shape
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40086—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by using a purge gas
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of waste gas treatment equipments, including runner adsorbent equipment, the runner adsorbent equipment includes the adsorption zone of exhaust gas absorption and the desorption area of exhaust gas desorption, the waste gas treatment equipment further includes electrochemical desorption device, and the electrochemical desorption device includes the electrolytic cell for containing electrolyte；The desorption area of the runner adsorbent equipment is set in electrolytic cell；The runner adsorbent equipment can rotate in electrolytic cell.The invention also discloses a kind of waste gas processing methods.By the above embodiment, present device is easy, has the advantages that low energy consumption, and heat of adsorption accumulation is small and desorption is efficient, is very suitable for the VOCs exhaust-gas treatments of large-wind-volume low-concentration.
Description
Technical field
The present invention relates to volatility technical field of waste gas treatment more particularly to a kind of waste gas treatment equipment and its processing sides
Method.
Background technology
Volatile organic matter（Volatile Organic Compounds, VOCs）With strong photochemical activity, it is
Generate fine particle（Fine Particulate, PM2.5）Important as precursors object.Volatile organic waste gas is carried out stringent effective
Improvement, be to reduce air PM2.5 concentration and improve the effective measure of ambient air quality.
Absorption method is that processing VOCs commonly uses one of effective method at present.Absorption method is a kind of to be located using porous adsorbent
Managing fluid mixture can attract simultaneously concentration, promptly will be dirty to the characteristic on its surface certain in fluid or certain class component in the process
The method that dye object is removed from fluid.But adsorbent can be gradually reduced with the increase of its surface of solids pollutant, adsorption capacity,
Adsorbent is needed replacing at this time or certain method is used to make pollutant desorption to restore the adsorption capacity of adsorbent, and be desorbed
Process is otherwise known as adsorbent reactivation.Due to replacing adsorbent, that there are operation expenses is excessively high, and there are two for the adsorbent thrown aside
The problems such as secondary pollution, therefore do not advocate the adsorbent frequently more renewed generally；And reproducing adsorbent in terms of, be often used heating, decompression,
The methods of solvent extraction.
It is handled for the ease of actual production operation, realizes that continuously absorption and in-situ regeneration, people have invented parallel connection to adsorbent
Adsorb fixed bed and fluidized absorption bed.
Parallel connection absorption fixed bed is often used more than two absorption fixed beds, right in turn by way of pipe valve switching
Fixed bed carries out gas absorption or desorption, such equipment body is simple in structure, is suitable for the exhaust-gas treatment of small air quantity low concentration, but
It is more demanding to valve airtight performance and control, and is susceptible to absorption heat storage and there are gases to fire risk.
Fluidized absorption bed then allows fluid to pass through bed body with higher flow velocity, makes adsorbent during gas-solid contact in outstanding
Floating fluidized state enhances gas solid transfer efficiency, and bed body is divided into top absorption active section and lower part reproduction operation section, equipment are tight
It gathers and processing capacity is big, but equipment construction complexity, high energy consumption, adsorbent attrition are big.
Invention content
The present invention provides a kind of waste gas treatment equipment and its method to solve above-mentioned technical problem, and present device is easy,
With the feature that low energy consumption, and heat of adsorption accumulation is small and desorption is efficient, it is very suitable for the VOCs exhaust gas of large-wind-volume low-concentration
Processing.
In order to solve the above technical problems, a kind of waste gas treatment equipment of present invention offer, including runner adsorbent equipment, described turn
Wheel adsorbent equipment includes the adsorption zone of exhaust gas absorption and the desorption area of exhaust gas desorption, the waste gas treatment equipment further include
Electrochemical desorption device, the electrochemical desorption device include the electrolytic cell for containing electrolyte；The runner adsorbent equipment
Desorption area be set in electrolytic cell；The runner adsorbent equipment can rotate in electrolytic cell.
Further, the runner adsorbent equipment includes runner and driving device, and the runner passes through with shaft and by turning
Shaft rotation is dynamic to be supported on electrolytic cell, and the driving device connection shaft is to drive runner to be rotated relative to electrolytic cell, the runner
The region for stretching into electrolytic cell is configured as the desorption area of runner adsorbent equipment, and the region that the runner is exposed to electrolytic cell is configured
For the adsorption zone of runner adsorbent equipment.
Further, the runner adsorbent equipment includes outer housing, and the outer housing, which is fixedly arranged on electrolytic cell and is provide with, to be turned
Wheel is exposed to the region of electrolytic cell, and the outer housing is fixedly installed relative to runner, and there are two independent for formation in the outer housing
Cloth air cavity, the region of the corresponding runner of the cloth air cavity is configured as adsorption zone, the corresponding runner of another cloth air cavity
Region be configured as purging desiccant stripping area, the adsorption zone, desorption area and stripping the area phase successively in rotation direction
Even.
Further, the outer housing correspond to the position of adsorption zone side offer adsorption zone air inlet, the other side is opened
Equipped with adsorption zone gas outlet；The side that the outer housing corresponds to the position in stripping area offers stripping area air inlet, the other side is opened
Equipped with stripping area gas outlet.
Further, two independent cloth air cavitys are formed by the way that gas partitions plate is arranged in outer housing；The gas
Body demarcation strip is abutted with runner plane, is provided in the end that the gas partitions plate is abutted with runner plane flexible close
Strip of paper used for sealing.
Further, the electrochemical desorption device includes the DC power supply being set to outside electrolytic cell, the electrolytic cell
The cathode for being inside provided with the anode being electrically connected with DC power anode, being electrically connected with DC power cathode, the anode and cathode
It is connected to form electric field by electrolyte, the runner is installed between anode and cathode；The anode and cathode is in reticular structure；
The anode is graphite or lead dioxide electrode, and the cathode is graphite, stainless steel or Activated Carbon Fiber Electrodes.
Further, the runner is using honeycomb shaped disk shape structure and using made of acticarbon.
Further, the transverse strength of the runner is not less than 0.3MPa, and longitudinal strength is not less than 0.8MPa, and BET compares table
Area is not less than 750m2/ g, gas flow rate are less than 1.2m/s；The depth that the runner is immersed in electrolytic cell electrolyte inside is runner
Between the 35%~50% of diameter；The gyration period of the runner is 2h~5h；Adsorption zone in the runner：Area is desorbed：Stripping area
Area ratio be 2：3：1.
Further, the upper part of the electrolytic cell, which is equipped with, has valvular inlet tube, bottom equipped with the valvular evacuated tube of tool.
In order to solve the above technical problems, at the present invention also provides a kind of exhaust gas based on as described in any of the above-described embodiment
The waste gas processing method that equipment is realized is managed, is included the following steps：Electrolyte submergence runner adsorbent equipment is injected into electrolytic cell
Area is desorbed；Electrochemistry desorption apparatus and rotating wheel adsorbent equipment is connected；It is passed through exhaust gas to the runner adsorbent equipment；In turn,
Exhaust gas is adsorbed in the adsorption zone of the runner adsorbent equipment, is then desorbed in the desorption area of the runner adsorbent equipment.
The waste gas treatment equipment and method of the embodiment of the present invention, have the following advantages：
1, the device structure is simple, easy to use, and runner absorption and regeneration carry out at normal temperatures and pressures, and reaction condition is mild, inhale
Attached heat storage amount is small, and it is low that gas fires risk；
2, runner absorption and electrochemical regeneration technique organic coupling, cycle turns adsorbent in DC electric field in the form of runner
It is dynamic, it not only realizes adsorbent and synchronizes absorption and regeneration, electrolytic oxidation object and absorption are also improved during rotation is stirred
The efficiency of agent contact mass transfer has desorption in situ, and desorption is efficient, and low energy consumption, and no absorbent atomizing, degradation phenomena increase
The characteristics of adsorbent service life；
3, equipment continuous operation, air speed is high, and pressure drop is low, and adsorption efficiency is high, is very suitable for the VOCs exhaust gas of large-wind-volume low-concentration
Processing.
Description of the drawings
Fig. 1 is waste gas treatment equipment structural schematic diagram of the present invention；
Fig. 2 is waste gas treatment equipment front view shown in Fig. 1；
Fig. 3 is waste gas treatment equipment right view shown in Fig. 1；
Fig. 4 is the structural schematic diagram of outer housing in waste gas treatment equipment shown in Fig. 1；
The structural schematic diagram of electrolytic cell in waste gas treatment equipment shown in Fig. 5 Fig. 1；
The structural diagrams of electrode are intended in waste gas treatment equipment shown in Fig. 6 Fig. 1.
Specific implementation mode
The present invention is described in detail with embodiment below in conjunction with the accompanying drawings.
It is carried out in conjunction with Fig. 1 to Fig. 6 refering to the present invention provides a kind of waste gas treatment equipments.The waste gas treatment equipment is used for
Exhaust gas, especially volatile organic gases are handled, which includes runner adsorbent equipment, which includes
Adsorption zone 21 and desorption area 22, adsorption zone 21 is for adsorbing exhaust gas, and desorption area 22 is for being desorbed exhaust gas.The waste gas treatment equipment is also
Including electrochemical desorption device, which includes the electrolytic cell 5 for containing electrolyte.The runner adsorbent equipment
Desorption area 22 be set in electrolytic cell 5.Wherein, runner adsorbent equipment can the rotation in electrolytic cell 5.
The runner adsorbent equipment includes runner 2 and the driving device being connect with runner 23.2 rotational support of runner is in electrolysis
On slot 5, and its subregion is stretched into electrolytic cell 5, and runner 2 can rotate under the driving of driving device 3 in electrolytic cell 5, turn
The region that wheel 2 stretches into electrolytic cell 5 is configured as desorption area 22, and 2 rest part of runner is configured as adsorption zone 21.Wherein,
Runner 2 is whole to have adsorption capacity to pending exhaust gas, and the runner 2 is often by passing through at its center with shaft 4 and by this
In on electrolytic cell 5, driving device 3 is further connect with shaft 44 rotational support of shaft, specifically, driving device 3 includes motor
31 and transmission belt 32,32 one end of transmission belt is connect with motor 31, the other end and shaft 4 connect and then realizes transmission.
The runner adsorbent equipment further includes outer housing 1.The outer housing 1 can be mounted on electrolytic cell 5, and runner 2 exposes
It is covered in outer housing 1 in the region of electrolytic cell 5, the region of the runner 2 which is covered is above-mentioned adsorption zone
21, in general, 1 position of outer housing is relatively fixed, runner 2 can rotate under the driving of driving device 3 relative to outer housing 1.Wherein,
Runner 2 is separated out above-mentioned adsorption zone 21 by the outer housing 1（In outer housing 1）With desorption area 22（Outer positioned at outer housing 1,
In electrolytic cell 5）.Specifically, offering the adsorption zone air inlet for being passed through exhaust gas on the outer housing 1 of 21 present position of adsorption zone
Mouth 12.
Preferably, runner 2 is rotated in the driving continuity from below of driving device 3, when being passed through exhaust gas to adsorption zone air inlet 12,
The adsorption zone 21 of runner 2 adsorbs exhaust gas, and when runner 2 turns to desorption area 22 namely runner 2 turns in electrolytic cell 5
When, electrochemical reaction occurs in electrolytic cell 5 and realizes desorption for exhaust gas, and the absorption property to restore runner 2 realizes runner 2 again
It makes profits use.Certainly, runner 2 intermittent can also rotate under the driving of driving device 3, and briefly, runner 2 can exist as needed
It is suitably stopped in rotation process, so that the adsorption zone 21 of runner 2 can fully adsorb exhaust gas and make the desorption area of runner 2
22 can fully be desorbed exhaust gas.
In one embodiment, runner adsorbent equipment further includes a stripping area 23 for purging dry runner 2, should
Stripping area 23 is set on runner 2, and in the rotation direction of runner 2, area 22 and stripping area 23 phase successively is desorbed in adsorption zone 21
Even namely waste gas treatment process passes through adsorption zone 21, desorption area 22 and stripping area 23 successively（Continuously move in circles）.Its
In, stripping area 23 and adsorption zone 21 are two relatively independent regions, are specifically formed by independent two by outer housing 1 respectively
Corresponding to cloth air cavity（Cover）The region of runner 2 formed.Further, in the outer housing 1 of 23 present position of stripping area
On offer stripping area air inlet 14 for being passed through stripping gas.When being passed through stripping gas by stripping area air inlet 14, runner 2
Drying is swept in the stripping air-blowing that stripping area 23 is passed into, further to restore the absorption property of runner 2, wherein after stripping drying
Runner 2 advantageously reduces the problem of water competition absorption causes volatile organic contaminant adsorption capacity to decline, and is realized for runner 2
Continuous absorption and in-situ regeneration provide the switching condition of continuous-stable.The stripping gas being passed through to stripping area 23 can be dry clean sky
Gas, nitrogen etc. can not only play the stripping desiccation to runner 2, to this more preferably through treated the tail gas of adsorption zone 21
Tail gas also has certain adsorption treatment effect.
According to foregoing description, it is possible to understand that, adsorption zone 21, desorption area 22 and stripping area 23 are not by runner 2
Body is divided into several fixed area, due to runner 2 be movement and outer housing 1 and electrolytic cell 5 are motionless, several areas
Domain is mainly to be defined according to the processing carried out by specific location area in 2 rotation process of runner, briefly, shell
The region that body 1 is passed through the runner 2 corresponding to the band of position of exhaust gas is adsorption zone 21, and electrolytic cell 5 submerges the band of position of runner 2
The region of corresponding runner 2 is desorption area 22, and outer housing 1 is passed through the region of the runner 2 corresponding to the band of position of stripping gas
For stripping area 23.
Specifically, in order to form required mutually independent adsorption zone 21 and stripping area 23, usually set in outer housing 1
Gas partitions plate 16 is set to be respectively formed two independent cloth air cavitys, a cloth air cavity corresponds to the setting of adsorption zone 21, another in outer housing 1
One cloth air cavity corresponds to the setting of stripping area 23.Wherein, the relationship that the plane of runner 2 coordinates with gas partitions plate 16 in scraping.Preferably
, in order to keep isolation between the cloth air cavity corresponding to adsorption zone 21 and stripping area 23 more preferable, and in order to keep runner 2 more smooth
Ground rotates, and can have the sealing strip 161 of appropriateness elasticity, system in the installation of the end of gas partitions plate 16 and 2 plane contact of runner
The material citing for making the sealing strip 161 can be rubber, silica gel or polytetrafluoroethylene (PTFE).For example, gas partitions plate 16 is usual
Can be set in outer housing 1 along the radial direction for being parallel to runner 2, and the gas partitions plate 16 top also have with
The consistent arc panel of 2 shape arc length of runner（Still it is labeled as 16）, bottom also have straight panel（It is not shown）, thus constitute one
The fan-shaped cloth air cavity of independent closed and adsorbed gas and the not short stream of stripping gas.
In one embodiment, adsorption zone air inlet 12 and 14 Chang Jun of stripping area air inlet may be disposed at outer housing 1
The same side.
Further, the position for corresponding to the adsorption zone 21 and stripping area 23 of runner 2, can be in 1 other side of outer housing
Same setting gas partitions plate 16 to be respectively formed two mutually independent cloth air cavitys, preferably equally gas partitions plate 16 with turn
Flexible sealing strip 161 is installed on the end of 2 contact of wheel, meanwhile, in the side, residing for the cloth air cavity of corresponding adsorption zone 21
Adsorption zone gas outlet 13 is opened up on outer housing 1, opening up stripping area on the outer housing 1 residing for the cloth air cavity in corresponding stripping area 23 goes out
Gas port 15.It is arranged with this configuration, exhaust gas and stripping gas can be collected, avoid environmental pollution.It if necessary will be through inhaling
Treated in attached area 21, and tail gas is passed through stripping area 23 as stripping gas, can be directly with pipeline by adsorption zone gas outlet 13 and stripping
Area's air inlet 14 is attached.
Certainly, adsorption zone air inlet 12 and stripping area air inlet 14 can also be located at the not homonymy of outer housing 1.Therewith
Correspondingly, adsorption zone gas outlet 13 and stripping area gas outlet 15 are located at the not homonymy of outer housing 1.
In one embodiment, electrochemical desorption device includes the DC power supply 51 being set to outside electrolytic cell 5.This is straight
The positive and negative anodes in galvanic electricity source 51 are electrically connected with two electrode slices being installed in electrolytic cell 5 respectively, wherein just with DC power supply 51
The electrode slice of pole electrical connection is as anode 512, and the electrode slice being electrically connected with the cathode of DC power supply 51 is as cathode 511, anode
512 and cathode 511 be connected by the electrolyte that is contained in electrolytic cell 5.And in order to keep electrochemical reaction more abundant, usually will
The region that runner 2 is immersed in electrolyte is set between anode 512 and cathode 511, and runner 2 is also installed in 512 He of anode
Between cathode 511.Preferably, cathode 511 is graphite, stainless steel or Activated Carbon Fiber Electrodes, and anode 512 is graphite or titanium dioxide
Lead electrode can increase electrochemical reaction area it is furthermore preferred that the cathode 511 and anode 512 are in reticular structure, improve desorption
Efficiency.Preferably, runner 2 be immersed in by 5 electrolyte inside of electrolytic cell formed desorption area 22 depth be 2 diameter of runner 35~
Between 50%, this ratio is usually the bigger the better in the range, to utilize the absorption property of runner 2 as far as possible.Preferably, turn
The gyration period of wheel 2 is that 2h~5h promotes the processing to exhaust gas to greatest extent to realize abundant adsorption and desorption and purge
Ability.
Electrolyte is added into electrolytic cell 5 for the ease of addition, inlet tube 53, inlet tube 53 are provided on electrolytic cell 5
On valve can be set, which is preferably solenoid valve to realize remote control.For the ease of depleted electrolyte is discharged,
5 bottom of electrolytic cell is provided with evacuated tube 52, may also set up valve in evacuated tube 52, which is preferably that solenoid valve is long-range to realize
Control.Furthermore it is possible to pH sensor be installed in electrolytic cell 5, to detect electrolyte by detecting the pH value of electrolyte
Degree of exhaustion, convenient addition in time and discharge electrolyte.
In one embodiment, runner 2 can be variously-shaped, more preferably honeycomb shaped disk structure, can increase
The specific surface area that runner 2 adsorbs, and be conducive to the circulation of exhaust gas and stripping gas in runner 2, it is preferred that honeycomb shaped disk structure
Runner 2 transverse strength be not less than 0.3MPa, longitudinal strength be not less than 0.8MPa, BET specific surface area be not less than 750m2/ g,
Gas flow rate is less than 1.2m/s.The runner 2 is preferably that acticarbon is made, because of the runner made of acticarbon
2 can adsorb a variety of poisonous and hazardous gases.Electrolytic cell 5 is discoid mutually suitable with runner 2 in square or semicircle dish structure
, electrolytic cell 5 is preferably semicircle dish structure.Correspondingly, outer housing 1 is in square or semicircle dish structure, it is discoid with runner 2
Suitable, outer housing 1 is preferably also semicircle dish structure.
In one embodiment, runner 2 is located at adsorption zone 21：Area 22 is desorbed：The area ratio in stripping area 23 is 2：3：1,
To coordinate the processing speed in 2 each region of runner.
In one embodiment, electrolyte is hydrochloride or stannous sulphate electrolyte, and concentration is chosen as 1-15g/L, is electrolysed
Current density is 5-15mA/cm2。
The main operational principle of waste gas treatment equipment of the present invention is described below：
It, can be by with cellular when volatile organic contaminant enters adsorption zone 21 from adsorption zone air inlet 12 when equipment is run
The acticarbon of structure attracts and concentration, and runner 2 is discharged from adsorption zone gas outlet 13 in purified tail gas.
The region for having adsorbed the runner 2 of pollutant turns to electrolytic cell 5 under the drive of driving device 3 area 22 is desorbed
Interior, under the action of electric field, the activated carbon that the region of runner 2 is immersed in the honeycomb structure in electrolyte polarizes, cathode
511 and anode 512 reduction reaction and oxidation reaction nearby occur respectively, the organic pollution for being adsorbed in runner 2 is most of positive
Product with oxidisability caused by pole 512 is decomposed, and fraction is then desorbed because of the effect of electrophoretic force.
With sodium chloride（NaCl）For solution is as electrolyte, electrochemical regeneration Principle of Process is as follows：
Cathode 511 reacts：
2H2O+2e=H2+2OH-
Cl2+2OH-=ClO-+Cl-+H2O
Anode 512 reacts：
2Cl--2e=Cl2
4OH--4e=2H2O+O2
Reaction generates hypochlorous acid（HClO3）, initial state oxygen [O] have oxidisability product：
2Cl-+9H2O-12e=2HClO3+16H++3[O]
Wherein, the hydroxyl radical free radical with Strong oxdiative type is also will produce under suitable electrical potential conditions（·OH）.
H2O=·OH+H+
By the volatile organic contaminant that area 22 is desorbed（R）By oxygenolysis under the action of each oxidant electrolysate.
R+Cl= CO2+H20+ inorganic ions
R+ HClO3l= CO2+H20+ inorganic ions
R+·OH=CO2+H20+ inorganic ions
Through electrochemical regeneration, area rotation to the stripping area 23 for restoring the runner 2 of adsorption capacity carries out purging drying, from stripping area
Air inlet 14 is passed through stripping gas to stripping area 23, and runner 2 is discharged from stripping area gas outlet 15 in the tail gas after stripping.
In a concrete application, the equipment is for handling common " triphen " organic exhaust gas of industrial source, VOCs gas inlets
Air quantity is 20000m3/ h, stripping gas air inlet air quantity are 2000 m3/ h, the ratio between gas inlet air quantity and stripping gas air inlet air quantity are
10：1.Equipment includes runner adsorbent equipment and electrochemical desorption device.2 a diameter of 2.6m of runner of cellular activated carbon, thickness are
0.6m, gyration period 3h.The electrolytic cell 5 of outer housing 1 and electrochemical desorption device in runner adsorbent equipment is in isometrical half
It is discoid, in the stripping area air inlet of adsorption zone air inlet 12 and caliber 250mm of the 1 outside side of outer housing equipped with caliber 600mm
Mouth 14 is equipped with the adsorption zone gas outlet 13 of caliber 600mm and blowing for caliber 250mm in the 1 corresponding other side in outside of outer housing
De- area gas outlet 15.Graphite network cathode 511 and brown lead oxide meshed anode 512 are installed in electrolytic cell 5, wherein electrolysis
Liquid is the electrolyte of the sodium chloride of 5g/L, electrolytic current density 10mA/cm2, the depth that runner 2 is immersed in electrolyte is runner
The 45% of 2 diameters.In a concentration of 300 mg/m of air inlet VOCs3, 400 mg/m3, 500 mg/m3Or 600 mg/m3Deng under conditions of,
Through the equipment treated equal < 20mg/m of outlet VOCs concentration3, VOCs treatment effeciencies > 93%.
In addition, the present invention also provides a kind of waste gas processing method, this method is realized based on above-mentioned waste gas treatment equipment.
Specifically, injecting the electrolyte of certain volume into electrolytic cell 5 from inlet tube 53 first, it is connected to 511 He of cathode
Anode 512 simultaneously opens DC power supply 51, makes to form electric field in electrolytic cell 5.Then start driving device 3, runner 2 is with shaft 4
Rotation is synchronized in electrolytic cell 5, outer housing 1 is not moved with runner 2 and is kept fixed.Synchronous, from the absorption of outer housing 1
Area's air inlet 12 is passed through the volatile organic waste gas that need to be handled, and stripping gas is passed through from the stripping area air inlet 14 of outer housing 1, and turns
The desorption area 22 of wheel 2 is then immersed in the progress electrochemical regeneration electrolyte in electrolytic cell 5 Nei.
The waste gas treatment equipment and method of the embodiment of the present invention, have the following advantages：
1, the device structure is simple, easy to use, and the absorption of runner 2 and regeneration carry out at normal temperatures and pressures, and reaction condition is mild, inhale
Attached heat storage amount is small, and it is low that gas fires risk；
2, the absorption of runner 2 and electrochemical regeneration technique organic coupling, cycle turns adsorbent in DC electric field in the form of runner 2
It is dynamic, it not only realizes adsorbent and synchronizes absorption and regeneration, electrolytic oxidation object and absorption are also improved during rotation is stirred
The efficiency of agent contact mass transfer has desorption in situ, and desorption is efficient, and low energy consumption, and no absorbent atomizing, degradation phenomena increase
The characteristics of adsorbent service life；
3, equipment continuous operation, air speed is high, and pressure drop is low, and adsorption efficiency is high, is very suitable for the VOCs exhaust gas of large-wind-volume low-concentration
Processing.
It these are only embodiments of the present invention, be not intended to limit the scope of the invention, it is every to utilize the present invention
Equivalent structure or equivalent flow shift made by specification and accompanying drawing content is applied directly or indirectly in other relevant technologies
Field is included within the scope of the present invention.
Claims (10)
1. a kind of waste gas treatment equipment, including runner adsorbent equipment, the runner adsorbent equipment includes the absorption of exhaust gas absorption
Area and the desorption area of exhaust gas desorption, it is characterised in that：
The waste gas treatment equipment further includes electrochemical desorption device, and the electrochemical desorption device includes for containing electrolyte
Electrolytic cell；The desorption area of the runner adsorbent equipment is set in electrolytic cell；The runner adsorbent equipment can be in electrolytic cell
Rotation.
2. waste gas treatment equipment according to claim 1, it is characterised in that：
The runner adsorbent equipment includes runner and driving device, and the runner is passed through with shaft and by shaft rotational support in electricity
It solves on slot, for the driving device connection shaft to drive runner to be rotated relative to electrolytic cell, the runner stretches into the area of electrolytic cell
Domain is configured as the desorption area of runner adsorbent equipment, and the region that the runner is exposed to electrolytic cell is configured as runner adsorbent equipment
Adsorption zone.
3. waste gas treatment equipment according to claim 2, it is characterised in that：
The runner adsorbent equipment includes outer housing, and the outer housing, which is fixedly arranged on electrolytic cell and is provide with runner, is exposed to electrolytic cell
Region, the outer housing is fixedly installed relative to runner, forms that there are two independent cloth air cavitys in the outer housing, described in one
The region of the corresponding runner of cloth air cavity is configured as adsorption zone, the region of the corresponding runner of another cloth air cavity is configured as blowing
Desiccant stripping area is swept, the adsorption zone, desorption area and stripping area are sequentially connected in rotation direction.
4. waste gas treatment equipment according to claim 3, it is characterised in that：
The side that the outer housing corresponds to the position of adsorption zone offers adsorption zone air inlet, the other side offers adsorption zone outlet
Mouthful；
The side that the outer housing corresponds to the position in stripping area offers stripping area air inlet, the other side offers stripping area outlet
Mouthful.
5. waste gas treatment equipment according to claim 3, it is characterised in that：
Two independent cloth air cavitys are formed by the way that gas partitions plate is arranged in outer housing；
The gas partitions plate is abutted with runner plane, and the end that the gas partitions plate is abutted with runner plane is provided with tool
Flexible sealing strip.
6. waste gas treatment equipment according to claim 2, it is characterised in that：
The electrochemical desorption device includes the DC power supply being set to outside electrolytic cell, is provided in the electrolytic cell and direct current
The anode of positive pole electrical connection, the cathode being electrically connected with DC power cathode, the anode are connected with cathode by electrolyte
Electric field is formed, the runner is installed between anode and cathode；
The anode and cathode is in reticular structure；
The anode is graphite or lead dioxide electrode, and the cathode is graphite, stainless steel or Activated Carbon Fiber Electrodes.
7. waste gas treatment equipment according to claim 3, it is characterised in that：
The runner is using honeycomb shaped disk shape structure and using made of acticarbon.
8. waste gas treatment equipment according to claim 7, it is characterised in that：
The transverse strength of the runner is not less than 0.3MPa, and longitudinal strength is not less than 0.8MPa, and BET specific surface area is not less than
750m2/ g, gas flow rate are less than 1.2m/s；
Between the depth that the runner is immersed in electrolytic cell electrolyte inside is the 35%~50% of runner diameter；
The gyration period of the runner is 2h~5h；
Adsorption zone in the runner：Area is desorbed：The area ratio in stripping area is 2：3：1.
9. waste gas treatment equipment according to claim 1, it is characterised in that：
The upper part of the electrolytic cell, which is equipped with, has valvular inlet tube, bottom equipped with the valvular evacuated tube of tool.
10. a kind of waste gas processing method realized based on such as claim 1~9 any one of them waste gas treatment equipment, special
Sign is, includes the following steps：
The desorption area of electrolyte submergence runner adsorbent equipment is injected into electrolytic cell；
Electrochemistry desorption apparatus and rotating wheel adsorbent equipment is connected；
It is passed through exhaust gas to the runner adsorbent equipment；
In turn, exhaust gas is adsorbed in the adsorption zone of the runner adsorbent equipment, then in the desorption area of the runner adsorbent equipment
It is desorbed.
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| CN109603486A (en) * | 2019-01-24 | 2019-04-12 | 查红平 | A kind of organic exhaust gas adsorption electrolysis unit |
| CN111701858A (en) * | 2020-06-28 | 2020-09-25 | 陈飞 | A high-efficient separation multiple-layer filtering device for bio-pharmaceuticals |
| CN113278455A (en) * | 2021-06-04 | 2021-08-20 | 邓燕龙 | Natural gas dewatering device |
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| CN108744883B (en) | 2023-11-14 |
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