CN209934332U - VOCs synthesizes treatment system with desulfurization dust removal function - Google Patents
VOCs synthesizes treatment system with desulfurization dust removal function Download PDFInfo
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- CN209934332U CN209934332U CN201920092900.1U CN201920092900U CN209934332U CN 209934332 U CN209934332 U CN 209934332U CN 201920092900 U CN201920092900 U CN 201920092900U CN 209934332 U CN209934332 U CN 209934332U
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- 239000000428 dust Substances 0.000 title claims abstract description 104
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 65
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 54
- 230000023556 desulfurization Effects 0.000 title claims abstract description 54
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 87
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 238000003851 corona treatment Methods 0.000 claims abstract description 33
- 239000000126 substance Substances 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims description 95
- 238000001179 sorption measurement Methods 0.000 claims description 27
- 239000006227 byproduct Substances 0.000 claims description 26
- 239000007921 spray Substances 0.000 claims description 12
- 230000001680 brushing effect Effects 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002912 waste gas Substances 0.000 description 33
- 239000007789 gas Substances 0.000 description 26
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 17
- 239000002956 ash Substances 0.000 description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 14
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 13
- 235000011114 ammonium hydroxide Nutrition 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 7
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 7
- 235000011130 ammonium sulphate Nutrition 0.000 description 7
- 239000002585 base Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000009832 plasma treatment Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a VOCs synthesizes treatment system with desulfurization dust removal function, including water curtain dust remover, pulse direct current corona desulfurization accessory substance collection device, pulse corona treatment VOCs device and activated carbon adsorber, the gas outlet of water curtain dust remover and the entry linkage of pulse direct current corona desulfurization accessory substance collection device, the export of pulse direct current corona desulfurization accessory substance collection device and the entry linkage of pulse corona treatment VOCs device, the export and the activated carbon adsorber of the entry of pulse corona treatment VOCs device are connected. The utility model discloses use water curtain dust remover, pulse direct current corona desulfurization accessory substance collection device, pulse corona treatment VOCs device and activated carbon adsorber cooperation, simplify the overall device structure and promote the performance to the exhaust-gas treatment effect has been improved.
Description
Technical Field
The utility model relates to a waste gas purification technique, concretely relates to VOCs synthesizes treatment system with desulfurization dust removal function.
Background
Since the industrial revolution, the familiar sources of atmospheric pollution mainly come from petroleum and chemical production processes, thermal power generation and the like. In actual industrial discharge, a plurality of atmospheric pollutants are often entrained, and the common steps are as follows: dust removal, acid mist removal, alkali washing, desulfurization and the like. In the gaseous harmful substance in the air, Volatile Organic Compounds (VOCs) and sulfur dioxide are relatively common and have wide sources, and the related industries are numerous, so that the health of surrounding residents is directly harmed, the generation of urban photochemical smog and haze is promoted, and the quality of the atmospheric environment in the area is indirectly influenced.
Corona discharge is a phenomenon that voltage is applied to an electrode (such as a needle electrode or a thin wire electrode) with a small curvature radius, and when the voltage is increased to a certain degree, a strong electric field near a needle point (or a thin wire) ionizes air around the electrode, so that partial discharge is generated; high energy electrons and N in background gas2、O2、 H2When O collides, N, O, OH and O are generated3The free radicals generally have active chemical properties, SO that VOCs and SO can be further converted2And (4) oxidative decomposition. Treatment of SO by pulsed corona plasma treatment2For example, the following steps are carried out: high-energy electrons generated by high-voltage pulse power supply are utilized to activate sulfur dioxide (SO) in coal-fired flue gas2) Adding ammonia as reactant to produce ammonium sulfate ((NH)4)2SO4) Fertilizers, sulfur can be recovered, but the by-products lose use value if fly ash exists. The pulsed corona plasma treatment technique is used for treating VOCs as an example: using a single pulseAlthough corona device treatment has the advantages of low energy consumption, less generated byproducts and the like, the removal rate is generally not more than 70%, so that a great deal of residual VOCs cannot be removed, and the removal rate of a single device is difficult to improve. In addition to pulsed corona treatment techniques, the industry also uses activated carbon adsorbers to purify VOCs; in the original adsorber, due to moisture contained in industrial waste gas, activated carbon is easy to agglomerate and attach to the wall of the adsorber due to moisture; when the activated carbon needs to be replaced, the cleaning work is very complicated because the size of the adsorber is not small and the adsorber is generally fixed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects existing in the prior art, and providing a VOCs comprehensive treatment system with the functions of desulfurization and dust removal. The VOCs comprehensive treatment system with the desulfurization and dust removal functions solves the problem of treatment defects of a single technology.
The purpose of the utility model is realized through the following technical scheme: this VOCs synthesizes treatment system with desulfurization dust removal function, including water curtain dust remover, pulse direct current corona desulfurization accessory substance collection device, pulse corona treatment VOCs device and activated carbon absorber, the gas outlet of water curtain dust remover and the entry linkage of pulse direct current corona desulfurization accessory substance collection device, the export of pulse direct current corona desulfurization accessory substance collection device and the entry linkage of pulse corona treatment VOCs device, the export and the activated carbon absorber of the entry of pulse corona treatment VOCs device are connected.
Preferably, the water curtain dust remover comprises a dust remover shell, a base, a cylindrical screen, a spray head and an air inlet connecting pipe, wherein the lower end of the dust remover shell is connected with the base, the screen is installed in the dust remover shell, the upper end and the lower end of the dust remover shell are respectively connected with the water inlet connecting pipe and the water outlet connecting pipe, the spray head is installed on the water inlet connecting pipe, and the spray head is positioned above the screen; the air inlet connecting pipe extends into the screen mesh from the outer side of the dust remover shell; and an air outlet connecting pipe is arranged at the upper end of the dust remover shell and is connected with a pulse direct current corona desulfurization byproduct collecting device.
Preferably, the water curtain dust remover further comprises a circulating pump, a water outlet connecting pipe is arranged at the lower end of the dust remover shell, the water outlet connecting pipe is connected with the circulating pump through a three-way valve, and a water outlet of the circulating pump is connected with the water inlet connecting pipe.
Preferably, the inner diameter of the lower end of the dust remover shell is gradually reduced, and a piston is arranged in the lower end of the dust remover; the cross section of the piston is I-shaped, the piston comprises a top plate, a connecting plate and a bottom plate, the top plate is connected with the bottom plate through the connecting plate, the bottom plate is connected with the inner wall of the dust remover shell in a sealing mode, and a space is arranged between the outer edge of the top plate and the inner wall of the dust remover shell.
Preferably, the pulse direct current corona desulfurization byproduct collecting device comprises a plurality of first discharge electrodes, a reaction chamber and an ash bucket, wherein an air inlet end cover and an air outlet end cover are respectively arranged at two ends of the reaction chamber, the plurality of first discharge electrodes are all arranged in the reaction chamber, and the plurality of first discharge electrodes are distributed along the axial direction of the reaction chamber; the ash hopper is connected with the lower end of the reaction chamber; the air inlet end cover is connected with an air outlet of the water curtain dust remover, the air outlet end cover is connected with an inlet of the pulse corona treatment VOCs device, and a first grounding polar plate is arranged in the reaction chamber.
Preferably, the pulse direct current corona desulfurization byproduct collecting device further comprises an ash brushing mechanism, the ash brushing mechanism comprises a brush holder, a roller, a motor, a rope and a roller, the roller is mounted on the reaction chamber, the roller is mounted in the reaction chamber, one end of the rope is connected with the roller, the other end of the rope is connected with the roller, the brush holder is connected with the rope, the brush holder is located in the reaction chamber, the first discharge electrode penetrates through a brush hole of the brush holder, and the outer edge of the brush holder is connected with the first grounding polar plate; the motor is connected with the roller, and a first grounding polar plate is arranged in the reaction chamber.
Preferably, pulse corona treatment VOCs device includes reaction chamber, flange head, circular arc head and a plurality of second discharge electrode, flange head and circular plate head are connected with reaction chamber's both ends respectively, be equipped with a plurality of second ground plate in the reaction chamber, one of them second ground plate separates into two communicating last reaction chambeies of one end and lower reaction chamber with reaction chamber's inner chamber, and a plurality of second discharge electrode divide the face two sets ofly, and two sets of second discharge electrode install respectively in last reaction chamber and lower reaction chamber, the flange head is equipped with first takeover and second takeover, just first takeover and second takeover are connected with last reaction chamber and lower reaction chamber respectively, first takeover and pulse direct current corona desulfurization accessory collection device, the second takeover is connected with the activated carbon absorber.
Preferably, the activated carbon absorber is including adsorbing shell, inner bag and loading and unloading lid, the one end of adsorbing the shell is equipped with the absorption entry of being connected with pulse corona treatment VOCs device, the other end of adsorbing the shell is equipped with gas vent and loading and unloading mouth, the inner bag is installed in the inner chamber of adsorbing the shell, the absorption entry passes through inner bag and gas vent intercommunication, loading and unloading lid closure loading and unloading mouth.
Preferably, the liner comprises a liner shell, a honeycomb tube and a liner cover with an exhaust hole, the liner cover is connected with the open end of the liner shell, and the liner shell and the liner cover form an adsorption cavity; the honeycomb pipe is arranged in the adsorption cavity and is communicated with the adsorption inlet through a communicating pipe; activated carbon is filled between the inner wall of the liner shell and the outer wall of the honeycomb tube.
Preferably, a gas collection cavity is arranged between the end face of the exhaust end of the inner container and the assembling and disassembling cover, and the exhaust end of the inner container is communicated with the exhaust port through the gas collection cavity.
The utility model discloses for prior art have following advantage:
1. the utility model discloses mainly constitute by water curtain dust remover, pulse direct current corona desulfurization accessory substance collection device, pulse corona treatment VOCs device and activated carbon adsorber. The water curtain dust remover, the pulse direct current corona desulfurization by-product collecting device, the pulse corona treatment VOCs device and the activated carbon adsorber are used in a matched mode, the structure of the whole device is simplified, the performance is improved, and therefore the waste gas treatment effect is improved.
2. The water curtain dust remover realizes dust removal and ammonia water circulation, the dust removal ensures the use value of byproducts collected at the back, the ammonia water circulation saves the ammonia adding equipment of the desulfurization device, and the concentration of ammonia can be well controlled; the removal rate is further improved by the aid of the activated carbon adsorber for assisting pulsed corona treatment of VOCs.
3. The utility model discloses a pulse corona treatment VOCs device adopts double-deck reaction structure, does not increase area when improving the VOCs clearance, reduces the equipment cost.
4. The utility model discloses an activated carbon adsorber is when needing to change the active carbon, opens the loading and unloading lid of loading and unloading mouth, takes the inner bag out, then washs the inner bag again. Because the active carbon does not directly contact with the inner wall of the adsorption shell, the shell does not need to be cleaned, and the shell and the pipeline can be fixed and do not need to move. And the inner container is small in size, and after the inner container cover made of the iron wire net is opened, the activated carbon can be poured out like a garbage can, so that the garbage can is convenient to clean.
Drawings
FIG. 1 is a schematic structural diagram of the VOCs comprehensive treatment system with desulfurization and dust removal functions of the present invention.
Fig. 2 is a schematic structural diagram of the water curtain dust remover of the present invention.
Fig. 3 is a schematic structural diagram of the pulsed dc corona desulfurization byproduct collecting device of the present invention.
Fig. 4 is a top view of the pulsed dc corona desulfation byproduct collecting device of the present invention.
Fig. 5 is a schematic structural diagram of the ash brushing mechanism of the present invention.
Fig. 6 is a schematic structural view of the ash brush holder of the present invention.
Fig. 7 is a schematic structural view of a first discharge electrode according to the present invention.
Fig. 8 is a schematic structural diagram of the device for treating VOCs by pulsed corona according to the present invention.
Fig. 9 is a top view cross-sectional view of a pulsed corona treatment VOCs apparatus of the present invention.
Fig. 10 is a rear view sectional view of the pulsed corona treatment VOCs apparatus of the present invention.
Fig. 11 is a schematic structural view of a second discharge electrode according to the present invention.
FIG. 12 is a schematic view of the structure of the activated carbon adsorber of the present invention. For the sake of clarity, the lower mounting groove is not placed in the inner container.
Fig. 13 is a plan view of the activated carbon adsorber of the present invention.
Fig. 14 is a rear view of the activated carbon adsorber of the present invention. For the clarity of display, the inner container cover is not taken off from the inner container positioned at the upper left, and the inner container is not placed in the mounting groove positioned at the lower left.
Fig. 15 is a schematic structural view of the inner container of the present invention.
Wherein, 1 is a water curtain dust remover, 101 is a dust remover shell, 102 is a base, 103 is a screen, 104 is a spray head, 105 is an air inlet connecting pipe, 106 is a circulating pump, 107 is a three-way valve, 108 is a piston, 1081 is a top plate, 1082 is a connecting plate, 1083 is a bottom plate, 109 is an air outlet connecting pipe, 1010 is an water inlet connecting pipe, 1011 is an water outlet connecting pipe, 2 is a pulse direct current corona desulfurization byproduct collecting device, 201 is a first discharge electrode, 202 is a reaction chamber, 203 is an ash bucket, 204 is an air inlet end cover, 205 is an air outlet end cover, 206 is a first grounding polar plate, 207 is a brushing mechanism, 2071 is a brush holder, 2072 is a roller, 2073 is a motor, 2074 is a rope, 2075 is a roller, 2076 is a brush hole, 208 is a flow equalizing plate, 209 is a T-shaped rubber nut,
3 is a pulse corona treatment VOCs device, 301 is a reaction cavity, 302 is a flange end socket, 303 is an arc end socket, 304 is a second discharge electrode, 305 is a second grounding electrode plate, 306 is an upper reaction cavity, 307 is a lower reaction cavity, 308 is a clamping groove, 309 is a first connecting pipe, 3010 is a second connecting pipe, 4 is an activated carbon adsorber, 401 is an adsorption shell, 402 is an inner container, 4021 is a container shell, 4022 is a honeycomb tube, 4023 is a container cover, 4024 is an adsorption cavity, 4025 is a communicating pipe, 4026 is a mounting plate, 403 is a loading and unloading cover, 404 is an adsorption inlet, 405 is an exhaust port, 406 is a loading and unloading port, 407 is a gas collecting cavity, and 408 is a mounting groove.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
VOCs synthesizes treatment system with desulfurization dust removal function as shown in figure 1, including water curtain dust remover, pulse direct current corona desulfurization accessory substance collection device, pulse corona treatment VOCs device and activated carbon adsorber, the gas outlet of water curtain dust remover and the entry linkage of pulse direct current corona desulfurization accessory substance collection device, the export of pulse direct current corona desulfurization accessory substance collection device and the entry linkage of pulse corona treatment VOCs device, the export and the activated carbon adsorber of the entry of pulse corona treatment VOCs device are connected.
As shown in fig. 2, the water curtain dust collector comprises a dust collector shell, a base, a cylindrical screen, a nozzle and an air inlet connecting pipe, wherein the lower end of the dust collector shell is connected with the base, the screen is installed in the dust collector shell, the upper end and the lower end of the dust collector shell are respectively connected with the water inlet connecting pipe and the water outlet connecting pipe, the nozzle is installed on the water inlet connecting pipe, and the nozzle is positioned above the screen; the air inlet connecting pipe extends into the screen mesh from the outer side of the dust remover shell; and an air outlet connecting pipe is arranged at the upper end of the dust remover shell and is connected with a pulse direct current corona desulfurization byproduct collecting device, namely the air outlet connecting pipe is connected with an air inlet end cover.
Specifically, the screen mesh is made of stainless steel meshes, the plate-shaped stainless steel meshes are bent end to form a cylindrical screen mesh, the air outlet end of the air inlet connecting pipe is bent, the outlet of the air inlet connecting pipe faces towards the air inlet connecting pipe, and the outlet of the air inlet connecting pipe is opposite to the spray opening of the spray head. The ammonia water sprayed from the spray nozzle of the spray head is opened into a water curtain, the waste gas flows out from the outlet of the air inlet pull pipe and then rises to the water outlet connecting pipe, the waste gas passes through the water curtain, dust in the waste gas is attached to the ammonia to form dust particles, and the dust particles and the ammonia water fall to the lower end of the shell of the dust remover, namely to the piston.
The water curtain dust remover further comprises a circulating pump, a water outlet connecting pipe is arranged at the lower end of the dust remover shell and connected with the circulating pump through a three-way valve, and a water outlet of the circulating pump is connected with the water inlet connecting pipe. Circulating pump, water inlet take-over dust remover shell and water outlet take-over form a loop construction, then the circulating pump will fall the aqueous ammonia pump of dust remover shell lower extreme and send to the water inlet take-over, and this can let aqueous ammonia reuse, has improved the utilization ratio of aqueous ammonia, and it is extravagant to reduce.
The inner diameter of the lower end of the dust remover shell is gradually reduced, and a piston is arranged in the lower end of the dust remover. The specific piston is made of rubber, so that the effect of sealing the dust remover shell by the piston is better, and leakage is avoided. Simultaneously, the internal diameter of dust remover shell lower extreme reduces gradually, and this makes things convenient for aqueous ammonia and dust particle to collect.
The cross section of the piston is I-shaped, the piston comprises a top plate, a connecting plate and a bottom plate, the top plate is connected with the bottom plate through the connecting plate, the bottom plate is connected with the inner wall of the dust remover shell in a sealing mode, and a space is arranged between the outer edge of the top plate and the inner wall of the dust remover shell. This simple structure, the dust particle of whereabouts is collected between roof and bottom plate, when then the circulating pump extraction aqueous ammonia, avoids going out dust together and takes out to guarantee the quality of the aqueous ammonia of retrieving.
As shown in fig. 3 and 4, the pulsed dc corona desulfurization byproduct collecting device includes a plurality of first discharge electrodes, a reaction chamber, and an ash bucket, wherein an air inlet end cover and an air outlet end cover are respectively disposed at two ends of the reaction chamber, the plurality of first discharge electrodes are all installed in the reaction chamber, and the plurality of first discharge electrodes are distributed along an axial direction of the reaction chamber; the ash hopper is connected with the lower end of the reaction chamber; the air inlet end cover is connected with the gas outlet of water curtain dust remover (namely the air inlet end cover is connected with the takeover of giving vent to anger), the end cover of giving vent to anger is connected with the entry of pulse corona treatment VOCs device (namely the end cover of giving vent to anger is connected with first takeover), be equipped with first ground plate in the reaction chamber. The number of the first grounding polar plates is two, and the two first grounding polar plates are arranged on the inner walls of the two sides of the reaction chamber. As shown in fig. 3 and 7, the first discharge electrode includes a screw part connected to the top of the reaction chamber and an electrode part connected to the screw part, and fine teeth are formed on the outer surface of the electrode part. The screw portion of the first discharge electrode at the upper end is mounted to the top of the reaction chamber by means of a T-shaped rubber nut, and the electrode portion of the first discharge electrode is located within the reaction chamber. When the device works, the first discharge electrodes and the two groups of grounding polar plates are connected with a power supply in parallel, the number of the power supplies is two, one of the power supplies is a high-voltage narrow-pulse power supply, and the other power supply is a direct-current power supply. When the high-voltage narrow-pulse power supply discharges, the high-voltage narrow-pulse power supply can generate a voltage waveform with rising time less than 100ns, pulse width less than 200-500 ns and repetition frequency of 50-20 OHz, so that the first discharge electrode is ensured to carry out corona pulse treatment on waste gas. When the direct current power supply discharges, the larger the direct current base voltage is, the higher the collection efficiency is, but in order to avoid spark discharge, the voltage of the direct current power supply is controlled to be below the critical breakdown voltage. The electrode part of the first discharge electrode is provided with the serrations, so that the outer surface area of the electrode part can be increased, the electrode part can be in contact with more waste gas, and the reaction efficiency of the waste gas can be further improved.
As shown in fig. 3 to 6, the pulsed dc corona desulfurization byproduct collecting device further includes an ash brushing mechanism, the ash brushing mechanism includes a brush holder, a roller, a motor, a rope, and a roller, the roller is mounted on the reaction chamber, the roller is mounted in the reaction chamber, one end of the rope is connected to the roller, the other end of the rope is connected to the roller, the brush holder is connected to the rope, the brush holder is located in the reaction chamber, the first discharge electrode passes through a brush hole of the brush holder, and an outer edge of the brush holder is connected to the first ground electrode plate; the motor is connected with the roller. The ash bucket is scraped to the accessory substance attached to the surfaces of the first discharge electrode and the first grounding electrode plate by utilizing the ash brushing mechanism, so that the recovery efficiency of the accessory substance is improved, and the working performance of the first discharge electrode and the first grounding electrode plate is also ensured.
And a flow equalizing plate is arranged between the reaction chamber and the air inlet end cover. The flow equalizing plate can effectively control the speed and the distribution of waste gas entering the reaction chamber, and the reaction efficiency of the waste gas is improved.
As shown in fig. 8 to 10, the device for treating VOCs by pulsed corona comprises a reaction chamber, a flange seal head, an arc seal head and a plurality of second discharge electrodes, the flange seal head and the circular plate seal head are respectively connected with two ends of the reaction cavity, a plurality of second grounding polar plates are arranged in the reaction cavity, wherein, the inner cavity of the reaction cavity is divided into an upper reaction cavity and a lower reaction cavity with one end communicated by a second grounding polar plate, a plurality of second discharge electrodes are divided into two groups, the two groups of second discharge electrodes are respectively arranged in the upper reaction cavity and the lower reaction cavity, the flange seal head is provided with a first connecting pipe and a second connecting pipe, and first takeover and second takeover are connected with last reaction chamber and lower reaction chamber respectively, first takeover and pulse direct current corona desulfurization accessory substance collection device, the second takeover is connected with the activated carbon adsorber (that is the second takeover is connected with the absorption entry). The specific second grounding polar plate adopts three second grounding polar plates which are distributed in the reaction cavity from top to bottom, namely, the inner wall of the reaction cavity is provided with a clamping groove, and one of the second grounding polar plates is arranged in the reaction cavity through the clamping groove. And the other two second grounding polar plates are respectively arranged at the upper end and the lower end in the reaction cavity through bolts. The inner cavity of the reaction cavity is divided into an upper reaction cavity and a lower reaction cavity by one of the second grounding polar plates, one ends of the upper reaction cavity and one end of the lower reaction cavity are communicated, so that the waste gas flows out of the pulse corona treatment VOCs device and needs to sequentially pass through the first connecting pipe, the upper reaction cavity, the lower reaction cavity and the second connecting pipe, the path of the waste gas is sufficient, the waste gas is fully reacted, and the reaction efficiency is improved. In actual work, the plurality of second discharge electrodes and the three second grounding polar plates are connected in parallel to a high-voltage narrow-pulse power supply so as to ensure that the second discharge electrodes and the three second grounding polar plates can work effectively. As shown in fig. 11, the second discharge electrode has a structure similar to that of the first discharge electrode, i.e., the second discharge electrode also has a screw portion and an electrode portion, while the outer surface of the electrode portion is provided with serrations. The difference between the two is that the second discharge electrode has two screw portions, and the first discharge electrode has one screw portion. The two screw thread parts of the second discharge electrode are positioned at the two parts of the electrode part of the second discharge electrode, which ensures the stability of the second discharge electrode in being arranged in the reaction cavity. And two screw thread parts of the second discharge electrode are arranged on two sides of the reaction cavity through T-shaped rubber nuts.
As shown in fig. 12 to 14, the activated carbon adsorber includes an adsorption shell, an inner container and a loading and unloading cover, one end of the adsorption shell is provided with an adsorption inlet connected with the pulse corona treatment VOCs device, the other end of the adsorption shell is provided with an exhaust port and a loading and unloading port, the inner container is installed in the inner cavity of the adsorption shell, the adsorption inlet is communicated with the exhaust port through the inner container, and the loading and unloading cover closes the loading and unloading port. The inner cavity of the adsorption shell is provided with a plurality of mounting grooves, the number of the inner containers is equal to that of the mounting grooves, and the inner containers are inserted into the mounting grooves. The specific number of inner bags is four, and four mounting grooves are arranged in the inner cavity of the adsorption shell in a shape like a Chinese character 'tian'. The structure is simple, and the maintenance of the activated carbon adsorber is convenient.
As shown in fig. 15, the inner container includes a container shell, a honeycomb tube and a container cover with an air vent, the container cover is connected with the open end of the container shell, and the container shell and the container cover form an adsorption cavity; the honeycomb pipe is arranged in the adsorption cavity and is communicated with the adsorption inlet through a communicating pipe; activated carbon is filled between the inner wall of the liner shell and the outer wall of the honeycomb tube. Specifically, the pipe wall of the honeycomb pipe is provided with small holes which are closely arranged to form a honeycomb structure, so that the strength of the honeycomb pipe can be ensured, and meanwhile, the small holes can not only allow gas to pass, but also prevent active carbon positioned in the liner shell from entering the honeycomb pipe. The waste gas enters the adsorption shell from the adsorption inlet and then sequentially passes through the communicating pipe and the honeycomb pipe, and then in the process that the waste gas passes through the activated carbon and enters the gas collection cavity, the residual VOCs in the waste gas are adsorbed on the activated carbon, so that the waste gas can reach the emission standard when entering the gas collection cavity and then is discharged from the gas outlet. In order to ensure the stability of the communicating pipe, the communicating pipe is fixed in the container shell through a mounting plate made of an iron plate.
And a gas collection cavity is arranged between the end surface of the exhaust end of the inner container and the assembling and disassembling cover, and the exhaust end of the inner container is communicated with the exhaust port through the gas collection cavity. The gas flowing out from each inner container is collected in the gas collecting cavity and then is exhausted from the exhaust port, so that the energy consumption of the suction fan can be reduced.
The working process of the VOCs comprehensive treatment system with the functions of desulfurization and dust removal is as follows:
the waste gas enters a water curtain dust remover, after being filtered to remove dust, the waste gas enters a pulse direct current corona desulfurization byproduct collecting device for pulse corona treatment SO2To remove SO2While recovering the by-products formed; is removedTo SO2The waste gas enters a pulse corona treatment VOCs device to remove most VOCs, then enters an activated carbon adsorber to adsorb residual VOCs, and the purified gas is discharged from an exhaust port of the activated carbon adsorber.
The water curtain dust remover comprises the following specific working processes: waste gas enters a screen of the water curtain dust remover through the air inlet connecting pipe, and dilute ammonia water enters from the water inlet connecting pipe and is sprayed down through the high-pressure spray head, so that a water curtain is formed on the screen made of stainless steel; the waste gas carrying dust is vertically sprayed upwards from the air inlet connecting pipe, the dust is fully filtered and removed through the water curtain, and the waste gas without the dust flows out from the air outlet connecting pipe; the ammonia water with dust flows down to the upper end of the dust remover shell, and then the ammonia water is pumped to a water inlet connecting pipe by a circulating pump for recycling; dust particles formed by dust are accumulated between the two plates (namely the top plate and the bottom plate) of the piston, and when the dust particles are accumulated sufficiently, the piston can be pulled out of the base to clean the dust particles between the two plates of the piston.
The specific working process of the pulse direct current corona desulfurization byproduct collecting device is as follows: the dedusted waste gas sequentially passes through the inlet end cover and the flow equalizing plate and then enters the reaction chamber, and in the process that the waste gas flows from the reaction chamber, namely from the reaction chamber to the gas outlet end cover, the first discharge electrode performs pulse corona treatment on the waste gas to generate OH and HO2、NH、NH2、N2 +Isoreactive radicals and ions, SO in exhaust gases2Is oxidized into SO3Finally, ammonium sulfate is generated as a byproduct. The generated ammonium sulfate byproduct is charged at a high voltage to be adsorbed on the first discharge electrode and the first ground electrode plate. And removing the deposited ammonium sulfate by-product by an ash brushing mechanism so as to scrape the ammonium sulfate by-product to an ash bucket, and collecting and recycling the ammonium sulfate by-product. The brush yoke moves along reciprocating under the drive of motor through cylinder and rope to brush the accessory substance of first discharge electrode and first earth electrode board surface adhesion, uses on earth electrode and discharge electrode, gets rid of the ammonium sulfate accessory substance of deposit. When the pulse DC corona desulfurization byproduct collecting device is in a discharge working state, the brush holder is positioned at the top end of the reaction chamberAnd the reaction process is not influenced.
The specific working process of the device for treating VOCs by pulse corona is as follows: the desulfurized waste gas sequentially passes through the first connecting pipe, the upper reaction cavity, the lower reaction cavity and the second connecting pipe; when passing through the upper reaction chamber and the lower reaction chamber, the waste gas is subjected to pulse corona reaction to generate OH and HO2、N2 +The active free radicals and ions react and decompose most VOCs, so that the waste gas is further purified, and the further purified waste gas flows out of the second connecting pipe and enters the activated carbon adsorber.
The specific working process of the activated carbon adsorber is as follows: after entering the activated carbon adsorber, the waste gas flows into the corresponding honeycomb tube through each communicating tube. The honeycomb tube has dense small holes and can only be passed through by gas. The gas flow flows from the inside of the honeycomb duct into the bladder. Because activated carbon is filled in the liner shell, the residual VOCs in the waste gas are adsorbed by the activated carbon, so that the waste gas is purified in the last step to form gas reaching the emission standard, and the gas components flow out of the liner cover made of a wire mesh and are collected in the gas collection cavity and finally are sucked out of the exhaust port by the suction fan to be exhausted to the atmosphere.
When the active carbon needs to be replaced, the assembling and disassembling cover of the assembling and disassembling port is opened, the inner container is drawn out by holding the handle of the inner container cover by hands, and then the inner container is cleaned. Because the activated carbon does not directly contact the inner wall of the adsorption shell, the adsorption shell does not need to be cleaned. The inner container is small in size, and after the inner container cover of the inner container is opened, the activated carbon can be poured out like a garbage can, and the activated carbon can be conveniently cleaned.
The above-mentioned specific implementation is the preferred embodiment of the present invention, can not be right the utility model discloses the limit, any other does not deviate from the technical scheme of the utility model and the change or other equivalent replacement modes of doing all contain within the scope of protection of the utility model.
Claims (10)
1. The utility model provides a VOCs synthesizes treatment system with desulfurization dust removal function which characterized in that: including water curtain dust remover, pulse direct current corona desulfurization accessory substance collection device, pulse corona treatment VOCs device and activated carbon adsorption ware, the gas outlet of water curtain dust remover and the entry linkage of pulse direct current corona desulfurization accessory substance collection device, the export of pulse direct current corona desulfurization accessory substance collection device and the entry linkage of pulse corona treatment VOCs device, the export of the entry of pulse corona treatment VOCs device is connected with activated carbon adsorption ware.
2. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 1, wherein: the water curtain dust remover comprises a dust remover shell, a base, a cylindrical screen, a spray head and an air inlet connecting pipe, wherein the lower end of the dust remover shell is connected with the base, the screen is arranged in the dust remover shell, the upper end and the lower end of the dust remover shell are respectively connected with the water inlet connecting pipe and the water outlet connecting pipe, the spray head is arranged on the water inlet connecting pipe, and the spray head is positioned above the screen; the air inlet connecting pipe extends into the screen mesh from the outer side of the dust remover shell; and an air outlet connecting pipe is arranged at the upper end of the dust remover shell and is connected with a pulse direct current corona desulfurization byproduct collecting device.
3. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 2, wherein: the water curtain dust remover further comprises a circulating pump, a water outlet connecting pipe is arranged at the lower end of the dust remover shell and connected with the circulating pump through a three-way valve, and a water outlet of the circulating pump is connected with the water inlet connecting pipe.
4. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 2, wherein: the inner diameter of the lower end of the dust remover shell is gradually reduced, and a piston is arranged in the lower end of the dust remover; the cross section of the piston is I-shaped, the piston comprises a top plate, a connecting plate and a bottom plate, the top plate is connected with the bottom plate through the connecting plate, the bottom plate is connected with the inner wall of the dust remover shell in a sealing mode, and a space is arranged between the outer edge of the top plate and the inner wall of the dust remover shell.
5. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 1, wherein: the pulse direct current corona desulfurization byproduct collecting device comprises a plurality of first discharge electrodes, a reaction chamber and an ash bucket, wherein an air inlet end cover and an air outlet end cover are respectively arranged at two ends of the reaction chamber; the ash hopper is connected with the lower end of the reaction chamber; the air inlet end cover is connected with an air outlet of the water curtain dust remover, the air outlet end cover is connected with an inlet of the pulse corona treatment VOCs device, and a first grounding polar plate is arranged in the reaction chamber.
6. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 5, wherein: the device for collecting the byproducts of the pulse direct-current corona desulfurization further comprises an ash brushing mechanism, wherein the ash brushing mechanism comprises a brush holder, a roller, a motor, a rope and a roller, the roller is arranged on the reaction chamber, the roller is arranged in the reaction chamber, one end of the rope is connected with the roller, the other end of the rope is connected with the roller, the brush holder is connected with the rope, the brush holder is positioned in the reaction chamber, the first discharge electrode penetrates through a brush hole of the brush holder, and the outer edge of the brush holder is connected with a first grounding polar plate; the motor is connected with the roller.
7. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 1, wherein: the pulse corona treatment VOCs device comprises a reaction cavity, a flange seal head, an arc seal head and a plurality of second discharge electrodes, wherein the flange seal head and the circular plate seal head are respectively connected with two ends of the reaction cavity, a plurality of second grounding polar plates are arranged in the reaction cavity, one second grounding polar plate separates an inner cavity of the reaction cavity into an upper reaction cavity and a lower reaction cavity, one end of the upper reaction cavity is communicated with one end of the lower reaction cavity, the plurality of second discharge electrodes are divided into two groups, the two groups of second discharge electrodes are respectively installed in the upper reaction cavity and the lower reaction cavity, the flange seal head is provided with a first connecting pipe and a second connecting pipe, the first connecting pipe and the second connecting pipe are respectively connected with the upper reaction cavity and the lower reaction cavity, the first connecting pipe is connected with a pulse direct-current corona desulfurization byproduct collecting device, and the second connecting pipe is connected.
8. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 1, wherein: the active carbon adsorber includes absorption shell, inner bag and loading and unloading lid, the one end of absorption shell is equipped with the absorption entry of being connected with pulse corona treatment VOCs device, the other end of absorption shell is equipped with gas vent and loading and unloading mouth, the inner bag is installed in the inner chamber of absorption shell, the absorption entry passes through inner bag and gas vent intercommunication, loading and unloading lid closure loading and unloading mouth.
9. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 8, wherein: the inner container comprises a container shell, a honeycomb tube and a container cover with an exhaust hole, the container cover is connected with the open end of the container shell, and the container shell and the container cover form an adsorption cavity; the honeycomb pipe is arranged in the adsorption cavity and is communicated with the adsorption inlet through a communicating pipe; activated carbon is filled between the inner wall of the liner shell and the outer wall of the honeycomb tube.
10. The comprehensive treatment system for VOCs with desulfurization and dust removal functions of claim 8, wherein: and a gas collection cavity is arranged between the end surface of the exhaust end of the inner container and the assembling and disassembling cover, and the exhaust end of the inner container is communicated with the exhaust port through the gas collection cavity.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109663431A (en) * | 2019-01-18 | 2019-04-23 | 华南理工大学 | A kind of VOCs comprehensive treatment system with desulfurization and dedusting function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109663431A (en) * | 2019-01-18 | 2019-04-23 | 华南理工大学 | A kind of VOCs comprehensive treatment system with desulfurization and dedusting function |
| CN109663431B (en) * | 2019-01-18 | 2024-04-12 | 华南理工大学 | VOCs comprehensive treatment system with desulfurization and dust removal functions |
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