CN108905431B - Multistage VOCs industry tail gas processing system - Google Patents
Multistage VOCs industry tail gas processing system Download PDFInfo
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- CN108905431B CN108905431B CN201810818835.6A CN201810818835A CN108905431B CN 108905431 B CN108905431 B CN 108905431B CN 201810818835 A CN201810818835 A CN 201810818835A CN 108905431 B CN108905431 B CN 108905431B
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 231
- 239000000428 dust Substances 0.000 claims abstract description 148
- 238000005406 washing Methods 0.000 claims abstract description 126
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000007787 solid Substances 0.000 claims abstract description 71
- 238000001914 filtration Methods 0.000 claims abstract description 70
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 45
- 238000003756 stirring Methods 0.000 claims abstract description 43
- 238000001179 sorption measurement Methods 0.000 claims abstract description 31
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 239000005416 organic matter Substances 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000011221 initial treatment Methods 0.000 claims abstract 2
- 239000007789 gas Substances 0.000 claims description 138
- 238000010521 absorption reaction Methods 0.000 claims description 37
- 230000001681 protective effect Effects 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 16
- 239000002918 waste heat Substances 0.000 claims description 15
- 238000005192 partition Methods 0.000 claims description 13
- 238000002955 isolation Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000004064 recycling Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 9
- 230000002349 favourable effect Effects 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 125000004122 cyclic group Chemical group 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 claims description 4
- 238000005201 scrubbing Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 239000008236 heating water Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 239000000567 combustion gas Substances 0.000 claims description 2
- 238000011282 treatment Methods 0.000 abstract description 25
- 238000009287 sand filtration Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 11
- 230000032258 transport Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
- B01D46/32—Particle separators, e.g. dust precipitators, using loose filtering material the material moving during filtering
- B01D46/34—Particle separators, e.g. dust precipitators, using loose filtering material the material moving during filtering not horizontally, e.g. using shoots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/4218—Influencing the heat transfer which act passively, e.g. isolations, heat sinks, cooling ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
-
- 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
- B01D53/14—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 absorption
- B01D53/1487—Removing organic compounds
-
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention belongs to the field of gas treatment equipment, and particularly relates to a multistage VOCs (volatile organic compounds) industrial tail gas treatment system which comprises a dust removal chamber, a transmission belt, a dust washing tank, a connecting pipe, an active carbon adsorption box, a dust removal module, a sand filtering module, a stirring module and a washing module, wherein the dust removal module is used for primary treatment of industrial tail gas; the sand filtering module is used for separating solid sand and water in the industrial tail gas; the stirring module is used for washing off dust in the industrial tail gas; the washing module is used for washing the industrial tail gas after going out the dust, let in the clean room with industrial tail gas through an air inlet inside, industrial tail gas passes through the dust removal module in proper order, the sand filtration module, the processing back of stirring module and washing module, in the active carbon treatment box is reachd through the connecting pipe, the liquid of inside dry layer in the connecting pipe in to industrial tail gas absorbs, the harmful organic matter of active carbon in the active carbon adsorption box in to industrial tail gas reabsorbs, guarantee exhaust gas's cleanness.
Description
Technical Field
The invention belongs to the field of gas treatment equipment, and particularly relates to a multistage VOCs industrial tail gas treatment system.
Background
VOCs waste gas is common industrial waste gas of chemical industry, and the composition is complicated, contains a large amount of organic matters such as: most of the components of hydrocarbons, aldehydes, chlorinated hydrocarbons and the like contain carcinogenic pollutants, and if the pollutants are discharged into the atmosphere without being treated, the pollutants seriously harm the health of human bodies and cause great harm to the environment, so that the requirements on the VOCs tail gas treatment technology are higher and higher, and the tail gas treatment needs to be efficiently completed in limited equipment.
The current common industrial VOCs tail gas treatment method comprises the following steps: incineration, plasma purification, activated carbon adsorption, and photocatalysis. The incineration method is easy to cause secondary pollution, the treatment cost of the plasma purification method is too high, the treatment effect of the activated carbon adsorption method is poor, the treatment process of the photocatalysis method is complex and tedious, and the method cannot recycle useful resources in the tail gas, has low treatment efficiency and is not beneficial to the full utilization of resources.
The literature: multistage VOCs tail gas processing apparatus, application number: 2017110100279
In the above-mentioned patent literature, carry out multistage processing to VOCs tail gas through setting up dust removal case, washing jar and the active carbon adsorption case that connects in order, utilize the washing jar to get rid of acidic material wherein, improve the tail gas treatment effect, but the device can't carry out recycle to the washing liquid in the washing jar and the solid-state sand in the tail gas, is unfavorable for the make full use of resource.
Disclosure of Invention
In order to make up for the defects of the prior art, the multistage VOCs industrial tail gas treatment system provided by the invention has the advantages that industrial tail gas is introduced into the dust removal chamber, the industrial tail gas sequentially passes through the conveying belt to reach the dust washing tank and the washing tank, solid sand removal, dust removal and organic matter removal are sequentially carried out, in addition, the solid sand in the tail gas can be recovered in the treatment process, and the full and reasonable utilization of resources is realized.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a multistage VOCs industrial tail gas treatment system which comprises a dust removal chamber, a transmission belt, a dust washing tank, a connecting pipe and an active carbon adsorption box, wherein the upper half part of the dust removal chamber is cylindrical, the lower half part of the dust removal chamber is circular truncated cone, a sand outlet is formed in the bottom of the dust removal chamber, a first air inlet is formed in the left side wall of the dust removal chamber and used for entering industrial tail gas, a gas through-hole is formed in the right side wall of the dust removal chamber and used for flowing out of the industrial tail gas, and the dust removal chamber is used for primary filtration of the industrial tail gas; the conveying belt is arranged below the dust removal chamber and is used for conveying solid sand in the industrial tail gas; the dust washing tank is positioned below the left side of the conveying belt and is funnel-shaped; the washing tank is positioned on the right side of the dust removal chamber, absorption liquid is contained at the bottom of the washing tank, a second air inlet is formed in the left side wall of the bottom of the washing tank and is connected with an air passing port in the right side wall of the dust removal chamber through a connecting pipeline, a liquid outlet is formed in the right side wall of the bottom of the washing tank, a hook-shaped flange is arranged on the inner wall of the washing tank, and a gas outlet is formed in the top of the washing tank; the device comprises an active carbon adsorption box, a dust removal module, a sand filtration module, a stirring module and a washing module, wherein the active carbon adsorption box is positioned on the right side of a washing tank and is used for absorbing harmful organic matters in industrial tail gas; the sand filtering module is arranged at the bottom of the dust removal chamber and is used for separating solid sand and water in the industrial tail gas; the stirring module is positioned in the dust washing tank and is used for washing dust in the industrial tail gas; the washing module is arranged in the washing tank and used for washing the industrial tail gas after dust removal. When the device works, industrial tail gas is introduced into the dust removal chamber through the first air inlet, the industrial tail gas is sequentially treated by the dust removal module, the sand filtering module, the stirring module and the washing module and then reaches the active carbon treatment box through the connecting pipe, and the drying layer in the connecting pipe absorbs liquid in the industrial tail gas so as to reduce the adsorption pressure of the active carbon adsorption box; and the dried industrial tail gas enters the activated carbon adsorption box, and the activated carbon in the activated carbon adsorption box reabsorbes harmful organic matters in the industrial tail gas to ensure the cleanness of the discharged gas.
The dust removal module comprises a partition plate, a sand falling head, a connecting rod, a rotary table, a rotating motor and a waste heat recycling module, the partition plate is horizontally connected to the inner wall of the dust removal chamber, and a sand storage chamber is formed by the partition plate and the top of the dust removal chamber; the shakeout head is arranged at the bottom of the partition plate; the rotary table and the rotating motor are horizontally arranged on the side wall in the dust removing chamber through the mounting plate, the rotary table is connected with the rotating motor, and the rotating motor is used for driving the rotary table to rotate; one end of the connecting rod is connected with the rotary table, and the other end of the connecting rod is connected with the shakeout head; the waste heat recycling module is arranged on the circular truncated cone-shaped part in the dust removal chamber. The during operation opens and rotates the motor, rotates the motor drive carousel and rotates, and the carousel passes through the connecting rod and drives knockout head swing back and forth for solid-state sand in the industry tail gas is the S type curve when falling, is favorable to improving the intensive nature that solid-state sand distributes, thereby is favorable to improving dust removal effect, simultaneously, because solid-state sand has the heat absorption heat retaining effect, it can absorb the heat in the industry tail gas, and utilized by the inside waste heat cyclic utilization module of clean room.
The waste heat recycling module comprises a water tank, a guide plate, an annular guide pipe and a water pump, and the water tank is obliquely arranged on the circular truncated cone-shaped part at the lower half part in the dust removing chamber; the guide plate is arranged at the top of the water tank; annular honeycomb duct and water pump are installed on the outer wall of clean room, and the one end of annular honeycomb duct is connected with the sand outlet of clean room bottom. When the device works, when solid sand falls down to form a sand waterfall, and industrial tail gas passes through the sand waterfall, heat is transferred to the solid sand, and the solid sand falls down under the action of gravity; the water pump is started, water in the water tank is pumped into the annular guide pipe by the water pump and conveyed into the dust removal chamber, and the solid sand can be washed by the water due to the viscous resistance of the solid sand, so that the solid sand is prevented from flowing out of the dust removal chamber difficultly.
The sand filtering module comprises a sand outlet pipe, a sand filtering plate and a protective sleeve, the sand outlet pipe is connected with a sand outlet at the bottom of the dust chamber, the sand outlet pipe is in a round pipe shape, and a water outlet is formed in the side wall of the sand outlet pipe; the sand filtering plate is arranged inside the sand outlet pipe and is funnel-shaped, the sand filtering plate and the inner wall of the sand outlet pipe form a water storage chamber, sand filtering holes are formed in the sand filtering plate and are of a rectangular structure and are arranged in a staggered mode, the width of each sand filtering hole is smaller than the diameter of solid sand, the solid sand is prevented from entering the water storage chamber, the inner wall of the bottom of the sand filtering plate is provided with threads, the bottom of the sand filtering plate is provided with an annular flange, and the annular flange is connected with the inner side wall of the sand outlet pipe; the protective sheath sets up in the bottom of sand screen, and the protective sheath outside sets up the screw thread, and the protective sheath cooperatees through the screw thread and the screw thread of sand screen bottom inlayer. When the sand filter works, solid sand directly falls to the conveying belt through the center of the sand filter plate and the protective sleeve, water flows into a water storage chamber between the sand filter plate and the inner wall of the sand outlet pipe from the sand filter holes under the action of an adherence effect, and then flows out from a water outlet on the side wall of the sand outlet pipe, so that the water is recycled; open the water pump, the water pump transports the inside water of reservoir chamber to the guide plate top to transport to the clean room inner wall through annular honeycomb duct, water flows through the guide plate along the inner wall of clean room, and flows to the play sand pipe by the deflector, is favorable to the flow of solid-state sand on the one hand, and the solid-state sand of help is discharged from the clean room, and on the other hand is favorable to reducing the wearing and tearing of solid-state sand to the guide plate, thereby improves the life of guide plate.
The stirring module comprises a stirring motor, a stirring shaft, a conveying pipeline and a spiral conveyer, and the stirring motor is arranged on the outer wall of the dust washing pool; the stirring shaft is arranged in the stirring pool and is connected with the stirring motor; the bottom of the dust washing tank is communicated with a sand storage chamber in the dust removal chamber through a conveying pipeline; the spiral conveyor is connected with the conveying pipeline and used for conveying solid sand in the dust washing pool to the interior of the sand storage chamber. During operation, the stirring motor is started, the stirring shaft is driven by the stirring motor to wash away dust from the solid sand entering the dust washing pool, the screw conveyor is started again, and the solid sand after the dust is washed away is conveyed to the inside of the sand storage chamber through the conveying pipeline by the screw conveyor, so that the solid sand is fully recycled.
The washing module comprises a cover-type filter plate, an outward extending spring, a circulating pump and a circulating pipeline, the cover-type filter plate is a disc type with a flange arranged at the bottom, the cover-type filter plate is placed on a hook-shaped flange on the inner wall of a washing tank through the flange at the bottom, the hook-shaped flange and the cover-type filter plate form an isolation layer, the washing tank is divided into a plurality of chambers by the isolation layer, conical filter holes are uniformly formed in the cover-type filter plate, organic matters in industrial tail gas are fully filtered, the industrial tail gas enters the previous chamber from the next chamber through the conical filter holes, and the conical filter holes are beneficial to fully mixing the industrial tail gas and absorption liquid, so that the organic matters are favorably removed; the outer extending springs are horizontally and symmetrically arranged above the cover-type filter plate, one ends of the outer extending springs are connected with the inner wall of the washing tank, and the other ends of the outer extending springs are placed on the cover-type filter plate in a cantilever manner; one end of the circulating pipeline is connected with a liquid outlet on the right side wall of the washing tank, the circulating pipeline is connected with the inside of a chamber which is divided by the isolating layer and is used for recycling the washing liquid in the washing tank; the circulating pump is used for providing power for the circulation of the washing liquid. The during operation opens the circulating pump, under the effect of circulating pump, during absorption liquid arrived in the washing jar by a plurality of cavities that the isolation layer cut apart through circulating line, the absorption liquid carries out the intensive mixing absorption to industry tail gas, simultaneously when industry tail gas process toper filtration pore, can make lid type filter plate rock from top to bottom, extension spring can guarantee that lid type filter plate rocks in the certain limit, thereby avoid lid type filter plate transition to rock and cause the excessive loss of absorption liquid, industry tail gas after the absorption of absorption liquid forms clean gas and discharges from the gas outlet at washing jar top.
The invention has the following beneficial effects:
1. according to the invention, solid dust in industrial tail gas is removed by arranging the dust removal module in the dust removal chamber and the stirring module in the washing tank, harmful substances in the industrial tail gas are removed by arranging the sand filtering module and the washing module, and finally the industrial tail gas is treated by the connecting pipe and the activated carbon adsorption box to form clean gas to be discharged.
2. According to the invention, the rotating motor is arranged to drive the rotating disc to rotate, and the rotating disc drives the shakeout head to swing back and forth through the connecting rod, so that solid sand in the industrial tail gas is in an S-shaped curve when falling down, and the solid sand distribution density is improved, and the dust removal effect is improved.
3. According to the invention, the water pump is arranged to convey water in the water storage chamber to the upper part of the guide plate and to the inner wall of the dust removal chamber through the annular guide pipe, and the water flows through the guide plate along the inner wall of the dust removal chamber and flows to the sand outlet pipe from the guide plate, so that on one hand, the flow of solid sand is facilitated, the solid sand is discharged from the dust removal chamber, on the other hand, the abrasion of the solid sand to the guide plate is reduced, and the service life of the guide plate is prolonged.
4. According to the invention, the cantilever of the extension spring is arranged on the inner wall of the washing tank, so that the cover-type filter plate can rock up and down when industrial tail gas passes through the conical filter hole, and the extension spring can ensure that the cover-type filter plate rocks within a certain range, thereby avoiding excessive loss of absorption liquid caused by excessive rocking of the cover-type filter plate.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
in the figure: the device comprises a dust removing chamber 1, a sand outlet 11, a first air inlet 12, an air vent 13, a conveying belt 2, a dust washing tank 3, a washing tank 4, a second air inlet 41, a connecting pipeline 42, a liquid outlet 43, a gas outlet 44, a connecting pipe 5, a drying layer 51, an activated carbon adsorption tank 6, a dust removing module 7, a partition plate 71, a sand falling head 72, a connecting rod 73, a rotary disc 74, a waste heat recycling module 75, a water tank 751, a guide plate 752, an annular guide pipe 753, a sand filtering module 8, a sand outlet 81, a water outlet 811, a water storage chamber 812, a sand filtering plate 82, a sand filtering hole 821, a protective sleeve 83, a stirring module 9, a stirring motor 91, a spiral conveyor 92, a washing module 10, a cover type filter plate 101, an extension spring 102, a circulating pump 103 and a circulating.
Detailed Description
The configuration of the multistage VOCs industrial off-gas treatment system according to an embodiment of the present invention will be described below with reference to fig. 1 to 2.
As shown in fig. 1, the multistage VOCs industrial tail gas treatment system comprises a dust removal chamber 1, a conveyor belt 2, a dust washing tank 3, a washing tank 4, a connecting pipe 5 and an activated carbon adsorption tank 6, wherein the upper half part of the dust removal chamber 1 is cylindrical, the lower half part of the dust removal chamber 1 is circular truncated cone, a sand outlet 11 is formed in the bottom of the dust removal chamber 1, a first air inlet 12 is formed in the left side wall of the dust removal chamber 1, the first air inlet 12 is used for entering industrial tail gas, a gas passing port 13 is formed in the right side wall of the dust removal chamber 1, the gas passing port 13 is used for flowing out of the industrial tail gas, and the dust removal chamber 1 is used for primary filtration of the; the conveying belt 2 is arranged below the dust removal chamber 1, and the conveying belt 2 is used for conveying solid sand in industrial tail gas; the dust washing tank 3 is positioned below the left side of the conveying belt 2, and the dust washing tank 3 is funnel-shaped; the washing tank 4 is positioned on the right side of the dust removal chamber 1, absorption liquid is contained at the bottom of the washing tank 4, a second air inlet 41 is formed in the left side wall of the bottom of the washing tank 4, the second air inlet 41 is connected with an air passing port 13 in the right side wall of the dust removal chamber 1 through a connecting pipeline 42, a liquid outlet 43 is formed in the right side wall of the bottom of the washing tank 4, a hook-shaped flange is arranged on the inner wall of the washing tank 4, and a gas outlet 44 is formed in the top of the washing tank 4; the device comprises an active carbon adsorption box 6, a washing tank 4, a plurality of drying layers 51, a dust removal module 7, a sand filtering module 8, a stirring module 9 and a washing module 10, wherein the active carbon adsorption box 6 is positioned on the right side of the washing tank 4, the active carbon adsorption box 6 is used for absorbing harmful organic matters in industrial tail gas, the washing tank 4 is connected with the active carbon adsorption box 6 through a connecting pipe 5, the inside of the connecting pipe 5 is provided with the plurality of drying layers 51, the drying layers 51 are used for absorbing residual liquid in the washed industrial tail gas, the dust removal module 7 is arranged in a dust removal chamber 1, and the dust removal module 7 is used for primary; the sand filtering module 8 is arranged at the bottom of the dust removal chamber 1, and the sand filtering module 8 is used for separating solid sand and water in the industrial tail gas; the stirring module 9 is positioned in the dust washing tank 3, and the stirring module 9 is used for washing dust in the industrial tail gas; the washing module 10 is disposed inside the washing tank 4, and the washing module 10 is used for washing the industrial exhaust gas after dust removal. When the industrial tail gas treatment device works, the industrial tail gas is introduced into the dust removal chamber 1 through the first air inlet 12, is sequentially treated by the dust removal module 7, the sand filtering module 8, the stirring module 9 and the washing module 10 and then reaches the activated carbon treatment box through the connecting pipe 5, and the drying layer 51 in the connecting pipe 5 absorbs liquid in the industrial tail gas so as to reduce the adsorption pressure of the activated carbon adsorption box 6; the dried industrial tail gas enters the activated carbon adsorption tank 6, and the activated carbon in the activated carbon adsorption tank 6 reabsorbes harmful organic matters in the industrial tail gas, so that the cleanness of the exhaust gas is ensured.
As shown in fig. 1, the dust removal module 7 includes a partition plate 71, a sand drop head 72, a connecting rod 73, a turntable 74, a rotating motor and a waste heat recycling module 75, the partition plate 71 is horizontally connected to the inner wall of the dust removal chamber 1, and the partition plate 71 and the top of the dust removal chamber 1 form a sand storage chamber; the knockout head 72 is arranged at the bottom of the partition plate 71; the rotary table 74 and the rotary motor are horizontally arranged on the side wall in the dust chamber 1 through a mounting plate, the rotary table 74 is connected with the rotary motor, and the rotary motor is used for driving the rotary table 74 to rotate; one end of the connecting rod 73 is connected with the rotary disc 74, and the other end of the connecting rod 73 is connected with the shakeout head 72; the waste heat recycling module 75 is disposed on a circular truncated cone-shaped portion inside the dust removing chamber 1. During operation, open the rotation motor, rotate motor drive carousel 74 and rotate, carousel 74 passes through connecting rod 73 and drives knockout head 72 swing back and forth for solid-state sand in the industrial exhaust is the S type curve when falling, is favorable to improving the intensive nature of solid-state sand distribution, thereby is favorable to improving the dust removal effect, simultaneously, because solid-state sand has the heat absorption heat retaining effect, it can absorb the heat in the industrial exhaust, and utilized by the inside waste heat cyclic utilization module 75 of clean room 1.
As shown in fig. 1, the waste heat recycling module 75 includes a water tank 751, a guide plate 752, an annular guide pipe 753, and a water pump, wherein the water tank 751 is obliquely installed on a circular truncated cone-shaped portion of the lower half inside the dust chamber 1; the guide plate 752 is installed on the top of the water tank 751; the annular guide pipe 753 and the water pump are installed on the outer wall of the dust removal chamber 1, and one end of the annular guide pipe 753 is connected with the sand outlet 11 at the bottom of the dust removal chamber 1. When the device works, when solid sand falls down to form a sand waterfall, and industrial tail gas passes through the sand waterfall, heat is transferred to the solid sand, the solid sand falls down under the action of gravity, and the sand has the functions of heat absorption and heat preservation, so that heat in the industrial tail gas can be absorbed and used for heating water in the water tank 751, and therefore the waste heat in the industrial tail gas is fully utilized; and a water pump is started, the water in the water tank 751 is pumped into the annular guide pipe 753 by the water pump and conveyed into the dust chamber 1, and the solid sand can be washed by the water due to viscous resistance of the solid sand, so that the solid sand is prevented from being difficult to flow out of the dust chamber 1.
As shown in fig. 2, the sand filtering module 8 includes a sand outlet pipe 81, a sand filtering plate 82 and a protective sleeve 83, the sand outlet pipe 81 is connected with the sand outlet 11 at the bottom of the dust chamber 1, the sand outlet pipe 81 is in a circular pipe shape, and a water outlet 811 is formed in the side wall of the sand outlet pipe 81; the sand filtering plate 82 is arranged inside the sand outlet pipe 81, the sand filtering plate 82 is funnel-shaped, the sand filtering plate 82 and the inner wall of the sand outlet pipe 81 form a water storage chamber 812, sand filtering holes 821 are formed in the sand filtering plate 82, the sand filtering holes 821 are of a rectangular structure and are arranged in a staggered mode, the width of the sand filtering holes 821 is smaller than the diameter of solid sand, the solid sand is prevented from entering the water storage chamber 812, the inner wall of the bottom of the sand filtering plate 82 is provided with threads, the bottom of the sand filtering plate 82 is provided with an annular flange, and the annular flange is connected with the inner side wall of the sand outlet pipe 81; the protective sleeve 83 is arranged at the bottom of the sand filtering plate 82, threads are arranged on the outer side of the protective sleeve 83, and the protective sleeve 83 is matched with the threads of the inner layer at the bottom of the sand filtering plate 82 through the threads. When the sand filter works, solid sand directly falls down onto the conveying belt 2 through the center of the sand filter plate 82 and the protective sleeve 83, water flows into a water storage chamber 812 between the sand filter plate 82 and the inner wall of the sand outlet pipe 81 from the sand filter holes 821 under the action of an adherence effect, and then flows out from a water outlet 811 on the side wall of the sand outlet pipe 81, so that the water is recycled; the water pump is started, water in the water storage chamber 812 is conveyed to the upper side of the guide plate 752 by the water pump and conveyed to the inner wall of the dust removal chamber 1 through the annular guide pipe 753, the water flows through the guide plate 752 along the inner wall of the dust removal chamber 1 and flows to the sand outlet pipe 81 through the guide plate 752, on one hand, the flow of solid sand is facilitated, the solid sand is discharged from the dust removal chamber 1, on the other hand, the abrasion of the solid sand on the guide plate 752 is reduced, and therefore the service life of the guide plate 752 is prolonged.
As shown in fig. 1, the stirring module 9 includes a stirring motor 91, a stirring shaft, a conveying pipeline and a screw conveyor 92, wherein the stirring motor 91 is installed on the outer wall of the dust washing tank 3; the stirring shaft is arranged in the stirring pool and is connected with a stirring motor 91; the bottom of the dust washing tank 3 is communicated with a sand storage chamber in the dust removal chamber 1 through a conveying pipeline; the screw conveyer 92 is connected with a conveying pipeline, and the screw conveyer 92 is used for conveying the solid sand in the dust washing tank 3 to the interior of the sand storage chamber. During operation, start agitator motor 91, agitator motor 91 drives the (mixing) shaft and will get into the solid-state sand in the scrubbing pond 3 and wash the dust, starts screw conveyer 92 again, and screw conveyer 92 will wash the solid-state sand after the dust through pipeline transport to store up inside the sand room, realize the abundant cyclic utilization of solid-state sand.
As shown in fig. 1, the washing module 10 includes a cover-type filter plate 101, an outward extending spring 102, a circulating pump 103 and a circulating pipeline 104, the cover-type filter plate 101 is a disc-shaped filter plate with a flange at the bottom, the cover-type filter plate 101 is placed on a hook-shaped flange on the inner wall of the washing tank 4 through the flange at the bottom, the hook-shaped flange and the cover-type filter plate 101 form an isolation layer, the isolation layer divides the washing tank 4 into a plurality of chambers, tapered filter holes 1011 are uniformly formed in the cover-type filter plate 101, so that organic matters in the industrial exhaust gas are fully filtered, the industrial exhaust gas enters the previous chamber from the next chamber through the tapered filter holes 1011, and the tapered filter holes 1011 facilitate the full mixing of the industrial exhaust gas and an absorption liquid, thereby facilitating; the outer springs 102 are horizontally and symmetrically arranged above the cover-type filter plate 101, one ends of the outer springs 102 are connected with the inner wall of the washing tank 4, and the other ends of the outer springs 102 are placed on the cover-type filter plate 101 in a cantilever manner; one end of the circulating pipeline 104 is connected with the liquid outlet 43 on the right side wall of the washing tank 4, the circulating pipeline 104 is connected with the inside of the chamber divided by the isolation layer in the washing tank 4, and the circulating pipeline 104 is used for recycling the washing liquid in the washing tank 4; the circulation pump 103 is used for providing power for circulation of the washing liquid. During operation, open circulating pump 103, under circulating pump 103's effect, the absorption liquid through circulating line 104 reach in the washing jar 4 by in a plurality of cavities that the isolation layer cut apart, the absorption liquid carries out the intensive mixing absorption to industrial tail gas, simultaneously when industrial tail gas process toper filtration pore 1011, can make lid type filter plate 101 rock from top to bottom, extension spring 102 can guarantee that lid type filter plate 101 rocks in the certain limit, thereby avoid lid type filter plate 101 transition to rock the excessive loss that causes the absorption liquid, industrial tail gas after the absorption of absorption liquid forms clean gas and discharges from the gas outlet 44 at washing jar 4 top.
The working process is as follows: inside air inlet 12 lets in industrial tail gas dust removal chamber 1, opens and rotates the motor, rotates motor drive carousel 74 and rotates, and carousel 74 passes through connecting rod 73 and drives knockout head 72 swing back and forth for solid-state sand in the industrial tail gas is the S type curve when falling, is favorable to improving the intensive nature of solid-state sand distribution, thereby is favorable to improving dust removal effect.
When the solid sand falls down to form a sand waterfall, and industrial tail gas passes through the sand waterfall, heat is transferred to the solid sand, the solid sand falls down under the action of gravity, and the sand has the functions of heat absorption and heat preservation, so that the heat in the industrial tail gas can be absorbed and used for heating water in the water tank 751, and the full utilization of waste heat in the industrial tail gas is realized; the water pump is started, water in the water tank 751 is pumped into the annular draft tube 753 and conveyed into the dust chamber 1 by the water pump, the solid sand can be washed by the water due to viscous resistance of the solid sand, the solid sand is prevented from being difficult to flow out of the dust chamber 1, the solid sand directly passes through the center of the sand filtering pipe and the protective sleeve 83 and falls down onto the conveying belt 2, the water flows into the water storage chamber 812 between the sand filtering plate 82 and the inner wall of the sand outlet pipe 81 from the sand filtering holes 821 under the action of the wall sticking effect, and the water flows out from the water outlet 811 on the side wall of the sand outlet pipe 81 so as to realize the reuse of the water; the water pump transports the water in the water storage chamber 812 to the upper side of the guide plate 752 and transports the water to the inner wall of the dust removal chamber 1 through the annular guide pipe 753, the water flows through the guide plate 752 along the inner wall of the dust removal chamber 1 and flows to the sand outlet pipe 81 through the guide plate 752, so that on one hand, the flowing of solid sand is facilitated, the solid sand is discharged from the dust removal chamber 1, on the other hand, the abrasion of the solid sand to the guide plate 752 is reduced, and the service life of the guide plate 752 is prolonged.
After solid-state sand drops to transmission band 2, the conveyer belt transports solid-state sand to inside the scrubbing pond 3, opens agitator motor 91, and agitator motor 91 drives the (mixing) shaft and washes the dust with the solid-state sand that gets into in the scrubbing pond 3, opens screw conveyer 92 again, and inside screw conveyer 92 transported the solid-state sand that washes away after the dust to the sand storage room through pipeline, realized the abundant cyclic utilization of solid-state sand.
After industrial tail gas passes through the sand waterfall, the industrial tail gas enters the washing tank 4 from the second air inlet 41 on the side wall of the bottom of the washing tank 4 through the air vent 13 on the right side wall of the dust removal chamber 1 and the connecting pipeline 42, the industrial tail gas enters the previous chamber from the next chamber through the conical filtering hole 1011, and the conical filtering hole 1011 is beneficial to the full mixing of the industrial tail gas and absorption liquid, so that organic matters are favorably removed; open circulating pump 103, under circulating pump 103's effect, during absorption liquid arrived in the washing jar 4 by a plurality of cavities that the isolation layer was cut apart through circulating line 104, the absorption liquid carries out the intensive mixing absorption to industrial tail gas, simultaneously when industrial tail gas passes through toper filtration pore 1011, can make lid type filter plate 101 rock from top to bottom, extension spring 102 can guarantee that lid type filter plate 101 rocks in certain extent, thereby avoid lid type filter plate 101 transition to rock and cause the excessive loss of absorption liquid, industrial tail gas after the absorption of absorption liquid forms clean gas and discharges from the gas outlet 44 at washing jar 4 top.
Clean gas is discharged from the gas outlet and is passed through connecting pipe 5, and remaining liquid is absorbed in the clean gas after the absorption washing in dry layer 51 in connecting pipe 5, and the clean gas after the drying reentries activated carbon adsorption case 6, and activated carbon adsorption case 6 absorbs remaining harmful organic matter in to clean gas, so through multistage tail gas processing system, can reach the multilevel processing to VOCS tail gas, guarantees the cleanness of combustion gas.
Industrial applicability
According to the invention, the treatment system can carry out multi-stage treatment on the industrial tail gas, thereby realizing the full and cyclic utilization of resources, so that the treatment system is useful in the field of gas treatment equipment.
Claims (1)
1. The utility model provides a multistage VOCs industrial tail gas processing system, includes clean room (1), transmission band (2), scrubbing pond (3), washing tank (4), connecting pipe (5) and active carbon adsorption case (6), the first half of clean room (1) is the drum type, and the latter half is the round platform type, and sand outlet (11) are seted up to the bottom of clean room (1), and air inlet (12) are seted up to the left side wall of clean room (1), and air inlet (12) are used for the entering of industrial tail gas, and air vent (13) are seted up to the right side wall of clean room (1), and air vent (13) are used for the outflow of industrial tail gas, and clean room (1) is used for the primary filtration of industrial tail gas; the conveying belt (2) is arranged below the dust removal chamber (1), and the conveying belt (2) is used for conveying solid sand in industrial tail gas; the dust washing tank (3) is positioned below the left side of the conveying belt (2), and the dust washing tank (3) is funnel-shaped; the washing tank (4) is positioned on the right side of the dust removal chamber (1), absorption liquid is contained at the bottom of the washing tank (4), a second air inlet (41) is formed in the left side wall of the bottom of the washing tank (4), the second air inlet (41) is connected with an air passing port (13) in the right side wall of the dust removal chamber (1) through a connecting pipeline (42), a liquid outlet (43) is formed in the right side wall of the bottom of the washing tank (4), a hook-shaped flange is arranged on the inner wall of the washing tank (4), and a gas outlet (44) is formed in the top of the washing tank (4); activated carbon adsorption case (6) are located the right side of washing jar (4), and activated carbon adsorption case (6) are arranged in absorbing the harmful organic matter in the industry tail gas, are connected through connecting pipe (5) between washing jar (4) and activated carbon adsorption case (6), and connecting pipe (5) inside is equipped with a plurality of drying layers (51), and drying layer (51) are arranged in absorbing remaining liquid, its characterized in that in the industry tail gas after the washing: the device is characterized by further comprising a dust removal module (7), a sand filtering module (8), a stirring module (9) and a washing module (10), wherein the dust removal module (7) is arranged inside the dust removal chamber (1), and the dust removal module (7) is used for primary treatment of industrial tail gas; the sand filtering module (8) is arranged at the bottom of the dust removal chamber (1), and the sand filtering module (8) is used for separating solid sand and water in the industrial tail gas; the stirring module (9) is positioned inside the dust washing pool (3), and the stirring module (9) is used for washing dust in the industrial tail gas; the washing module (10) is arranged inside the washing tank (4), and the washing module (10) is used for washing the industrial tail gas after dust removal;
the dust removal module (7) comprises a partition plate (71), a shakeout head (72), a connecting rod (73), a rotary table (74), a rotating motor and a waste heat recycling module (75), the partition plate (71) is horizontally connected to the inner wall of the dust removal chamber (1), and a sand storage chamber is formed by the partition plate (71) and the top of the dust removal chamber (1); the shakeout head (72) is arranged at the bottom of the partition plate (71); the rotary table (74) and the rotary motor are horizontally arranged on the side wall in the dust removing chamber (1) through a mounting plate, the rotary table (74) is connected with the rotary motor, and the rotary motor is used for driving the rotary table (74) to rotate; one end of the connecting rod (73) is connected with the rotary disc (74), and the other end of the connecting rod (73) is connected with the shakeout head (72); the waste heat recycling module (75) is arranged on a circular truncated cone-shaped part in the dust removing chamber (1);
the waste heat recycling module (75) comprises a water tank (751), a guide plate (752), an annular guide pipe (753) and a water pump, wherein the water tank (751) is obliquely arranged on a circular table-shaped part at the lower half part in the dust removing chamber (1); the deflector (752) is mounted on the top of the tank (751); the annular guide pipe (753) and the water pump are installed on the outer wall of the dust removal chamber (1), and one end of the annular guide pipe (753) is connected with a sand outlet (11) at the bottom of the dust removal chamber (1);
the sand filtering module (8) comprises a sand outlet pipe (81), a sand filtering plate (82) and a protective sleeve (83), the sand outlet pipe (81) is connected with a sand outlet (11) at the bottom of the dust chamber (1), the sand outlet pipe (81) is in a round pipe shape, and a water outlet (811) is formed in the side wall of the sand outlet pipe (81); the sand filtering plate (82) is arranged inside the sand outlet pipe (81), the sand filtering plate (82) is funnel-shaped, the sand filtering plate (82) and the inner wall of the sand outlet pipe (81) form a water storage chamber (812), sand filtering holes (821) are formed in the sand filtering plate (82), the sand filtering holes (821) are of a rectangular structure and are arranged in a staggered mode, the width of the sand filtering holes (821) is smaller than the diameter of solid sand, the solid sand is prevented from entering the water storage chamber (812), the inner wall of the bottom of the sand filtering plate (82) is provided with threads, the bottom of the sand filtering plate (82) is provided with a circular flange, and the circular flange is connected with the inner side wall of the sand outlet pipe (81); the protective sleeve (83) is arranged at the bottom of the sand filtering plate (82), threads are arranged on the outer side of the protective sleeve (83), and the protective sleeve (83) is matched with the threads on the inner layer of the bottom of the sand filtering plate (82) through the threads;
the stirring module (9) comprises a stirring motor (91), a stirring shaft, a conveying pipeline and a spiral conveyer (92), wherein the stirring motor (91) is arranged on the outer wall of the dust washing pool (3); the stirring shaft is arranged in the stirring pool and is connected with a stirring motor (91); the bottom of the dust washing tank (3) is communicated with a sand storage chamber in the dust removal chamber (1) through a conveying pipeline; the spiral conveyor (92) is connected with the conveying pipeline, and the spiral conveyor (92) is used for conveying solid sand in the dust washing tank (3) to the interior of the sand storage chamber;
the washing module (10) comprises a cover-type filter plate (101), an outward extending spring (102), a circulating pump (103) and a circulating pipeline (104), the cover-type filter plate (101) is a disc type with a flange at the bottom, the cover-type filter plate (101) is placed on a hook-shaped flange on the inner wall of the washing tank (4) through the flange at the bottom, the hook-shaped flange and the cover-type filter plate (101) form an isolation layer, the washing tank (4) is divided into a plurality of chambers through the isolation layer, and conical filter holes (1011) are uniformly formed in the cover-type filter plate (101); the outer springs (102) are horizontally and symmetrically arranged above the cover-type filter plate (101), one ends of the outer springs (102) are connected with the inner wall of the washing tank (4), and the other ends of the outer springs (102) are placed on the cover-type filter plate (101) in a cantilever manner; one end of the circulating pipeline (104) is connected with a liquid outlet (43) on the right side wall of the washing tank (4), the circulating pipeline (104) is connected with the inside of a chamber divided by the isolation layer in the washing tank (4), and the circulating pipeline (104) is used for realizing the cyclic utilization of the washing liquid in the washing tank (4); the circulating pump (103) is used for providing power for the circulation of the washing liquid;
the industrial tail gas is introduced into the dust removing chamber (1) through the first gas inlet (12), the rotating motor is started, the rotating motor drives the rotary disc (74) to rotate, and the rotary disc (74) drives the sand falling head (72) to swing back and forth through the connecting rod (73), so that solid sand in the industrial tail gas is in an S-shaped curve when falling, the distribution density of the solid sand is improved, and the dust removing effect is improved;
when the solid sand falls down to form a sand waterfall, and industrial tail gas passes through the sand waterfall, heat is transferred to the solid sand, the solid sand falls down under the action of gravity, and the sand has the functions of heat absorption and heat preservation, so that the heat in the industrial tail gas can be absorbed and used for heating water in a water tank (751), and the full utilization of waste heat in the industrial tail gas is realized; the water pump is started, water in the water tank (751) is pumped into the annular draft tube (753) by the water pump and conveyed into the dust chamber (1), the solid sand can be washed by the water due to viscous resistance of the solid sand, the solid sand is prevented from being difficult to flow out of the dust chamber (1), the solid sand directly passes through the center of the sand filtering pipe and the protective sleeve (83) and falls onto the conveying belt (2), the water flows into the water storage chamber (812) between the sand filtering plate (82) and the inner wall of the sand outlet pipe (81) from the sand filtering hole (821) under the action of the wall sticking effect, and the water flows out from the water outlet (811) on the side wall of the sand outlet pipe (81) so as to realize the reuse of the water; the water pump conveys water in the water storage chamber (812) to the position above the guide plate (752) and conveys the water to the inner wall of the dust removal chamber (1) through the annular guide pipe (753), the water flows through the guide plate (752) along the inner wall of the dust removal chamber (1) and flows to the sand outlet pipe (81) through the guide plate (752), on one hand, the flow of solid sand is facilitated, the solid sand is discharged from the dust removal chamber (1) is assisted, on the other hand, the abrasion of the solid sand to the guide plate (752) is reduced, and therefore the service life of the guide plate (752) is prolonged;
after the solid sand falls onto the conveying belt (2), the conveying belt conveys the solid sand into the dust washing pool (3), the stirring motor (91) is started, the stirring shaft is driven by the stirring motor (91) to wash the solid sand entering the dust washing pool (3) to remove dust, the screw conveyor (92) is started, and the screw conveyor (92) conveys the dust-removed solid sand into the sand storage chamber through the conveying pipeline, so that the solid sand is fully recycled;
after industrial tail gas passes through the sand waterfall, the industrial tail gas enters the washing tank (4) from a second air inlet (41) on the side wall of the bottom of the washing tank (4) through an air passing port (13) on the right side wall of the dust removal chamber (1) and a connecting pipeline (42), the industrial tail gas enters the previous chamber from the next chamber through a conical filtering hole (1011), and the conical filtering hole (1011) is favorable for fully mixing the industrial tail gas with absorption liquid, so that organic matters are favorably removed; the method comprises the following steps that a circulating pump (103) is started, absorption liquid passes through a circulating pipeline (104) and reaches a plurality of chambers partitioned by an isolation layer in a washing tank (4) under the action of the circulating pump (103), the absorption liquid is fully mixed and absorbed with industrial tail gas, meanwhile, when the industrial tail gas passes through a conical filtering hole (1011), a cover-shaped filtering plate (101) can swing up and down, an outward extending spring (102) can ensure that the cover-shaped filtering plate (101) can swing within a certain range, excessive loss of the absorption liquid caused by transition swinging of the cover-shaped filtering plate (101) is avoided, and the industrial tail gas absorbed by the absorption liquid forms clean gas and is discharged from a gas outlet (44) at the top of the washing tank (4);
clean gas is discharged from the gas outlet and is passed through connecting pipe (5), remaining liquid is absorbed in the clean gas after the absorption washing in dry layer (51) in connecting pipe (5), clean gas after the drying reentries in activated carbon adsorption case (6), remaining harmful organic matter absorbs in the clean gas in activated carbon adsorption case (6), so through multistage tail gas processing system, can reach the multilevel processing to VOCS tail gas, guarantee the cleanness of combustion gas.
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Denomination of invention: A multistage VOCs industrial tail gas treatment system Effective date of registration: 20230322 Granted publication date: 20210302 Pledgee: Bank of China Limited Tonghua Branch Pledgor: Tonghua Xinhong New Material Co.,Ltd. Registration number: Y2023220000018 |
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