CN108905526B - VOCs tail gas clean-up system - Google Patents
VOCs tail gas clean-up system Download PDFInfo
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- CN108905526B CN108905526B CN201810818334.8A CN201810818334A CN108905526B CN 108905526 B CN108905526 B CN 108905526B CN 201810818334 A CN201810818334 A CN 201810818334A CN 108905526 B CN108905526 B CN 108905526B
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- 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
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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
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
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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
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/58—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
- B01D46/60—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel arranged concentrically or coaxially
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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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
- B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
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- 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
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- 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
- B01D53/185—Liquid distributors
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- 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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- Engineering & Computer Science (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention belongs to the field of gas treatment equipment, and particularly relates to a VOCs (volatile organic compounds) tail gas purification system which comprises a first deslagging tank and a first tail gas purification tank, wherein tail gas is filtered by the first deslagging tank, and the filtered tail gas is conveyed to the first tail gas purification tank through a conduit for absorption; the method is characterized in that: a deslagging module and a collecting tank are arranged in the first deslagging tank, and the deslagging module is arranged above the collecting tank; the slag removal module is used for filtering impurities in the tail gas, and an air floatation module and a spraying module are arranged in the first tail gas purification tank; the air floatation module is used for absorbing the waste gas after deslagging; the spraying module is used for conveying absorption liquid to the air floatation module; the filter head is fixedly arranged on the inner wall of the deslagging cylinder; the deslagging plate is fixedly arranged at the bottom end of the deslagging cylinder, and a first opening is formed in the center of the deslagging plate and used for conveying impurities in the deslagging cylinder to the collecting tank; the purification capability of the invention to the organic volatile tail gas is improved.
Description
Technical Field
The invention belongs to the field of gas treatment equipment, and particularly relates to a VOCs tail gas purification 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. However, the above methods cannot solve the problem of removing the acidic substances in the tail gas, so that the treatment of the tail gas containing the VOCs can be efficiently completed by combining the above methods and designing a washing device capable of removing the acidic substances in the tail gas containing the VOCs.
The technical scheme of VOCs tail gas treatment also appears in the prior art, for example, a Chinese patent with application number 201711010027.9 discloses a multistage VOCs tail gas treatment device, which comprises a dust removal box, a washing tank and an activated carbon adsorption box which are connected in sequence, wherein the dust removal box is connected with the washing tank through a first connecting pipe; the washing tank is connected with the activated carbon adsorption tank through a second connecting pipe; a plurality of folding partition plates and telescopic rods for connecting the folding partition plates with the box top are arranged in the dust removal box, the folding partition plates are distributed in a wave shape, and the height of the folding partition plates can be controlled by the telescopic rods; the washing tank is characterized in that a hollow rotating shaft is arranged at the bottom of the washing tank, a plurality of aeration pipes are further arranged on the periphery of the rotating shaft, and the rotating shaft can drive the aeration pipes to rotate relative to the washing tank. The beneficial effects of the invention are as follows: and a multistage treatment mode is adopted, so that dust removal and harmful component treatment are fully performed on the VOCs tail gas, the treatment efficiency is improved, and the content of harmful substances in the gas is reduced.
Although this technical scheme can carry out slagging-off and absorption to tail gas, this technical scheme can not effectively filter the impurity in the tail gas, and this technical scheme can not utilize the mobile power of tail gas simultaneously, can not utilize this power to stir absorption liquid to make tail gas absorption insufficient, make this technical scheme receive the restriction.
Disclosure of Invention
In order to make up for the defects of the prior art, the VOCs tail gas purification system provided by the invention is mainly used for absorbing organic volatile tail gas, removing impurities in the tail gas through the matching of the deslagging module and the collecting tank, and absorbing and purifying the tail gas through the matching of the air flotation module and the spraying module, so that the purification capacity of the system on the organic volatile tail gas is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the VOCs tail gas purification system comprises a first deslagging tank and a first tail gas purification tank, tail gas is filtered by the first deslagging tank, and the filtered tail gas is conveyed to the first tail gas purification tank through a conduit to be absorbed; the method is characterized in that: a deslagging module and a collecting tank are arranged in the first deslagging tank, and the deslagging module is arranged above the collecting tank; the slag removal module is used for filtering impurities in the tail gas, and the collecting tank is used for collecting the impurities in the slag removal module; an air floatation module and a spraying module are arranged in the first tail gas purification tank; the air floatation module is used for absorbing the waste gas after deslagging; the spraying module is used for conveying absorption liquid to the air floatation module;
the slag removal module comprises a slag removal cylinder, a filter head and a slag removal plate; the slag removing cylinder is fixedly arranged on the lower surface of the upper bottom plate in the first slag removing tank, and the bottom end of the slag removing cylinder is in seamless connection with the inner wall of the first slag removing tank through a sealing plate; the filter head is fixedly arranged on the inner wall of the deslagging barrel; the slag removing plate is fixedly arranged at the bottom end of the slag removing cylinder, and a first opening is formed in the center of the slag removing plate and used for conveying impurities in the slag removing cylinder into the collecting tank; the slag removing plate is provided with an air inlet which is connected with a tail gas input pipe and is used for conveying tail gas into the slag removing cylinder; the filter head is conical, the tip of the filter head is provided with a filter hole, the lower end of the curved surface of the filter head is provided with a first ash removal port, and the curved surface of the filter head is hinged with a baffle plate; the shielding plate is used for removing ash in the filter head.
Tail gas flows into the upper part of the deslagging plate through the tail gas input pipe and the gas inlet; tail gas flows into to slagging-off section of thick bamboo after, and tail gas flows into to the skin of slagging-off section of thick bamboo from the filtration pore of crossing filter head, then tail gas carries to a tail gas purification jar through the pipe in, and at this moment, the air supporting module dissolves the absorption to tail gas, sprays the absorption that the module is used for carrying out the fountain to the surplus tail gas after the air supporting module is handled.
Preferably, the air flotation module comprises a hollow rotating shaft, an air storage tank, a rotating plate and a shielding unit; the hollow rotating shaft is rotatably connected with the guide pipe through a bearing; the upper end of the hollow rotating shaft is fixedly connected with the gas storage tank, and the hollow rotating shaft is used for conveying the tail gas in the guide pipe to the gas storage tank; the rotating plates are uniformly arranged on the outer surface of the side wall of the gas storage tank in a circumferential arrangement mode; a first air storage groove is formed in the side surface, in contact with the air storage tank, of the rotating plate; the top surface of the rotating plate is provided with a second air storage groove, and the side surface of the rotating plate is provided with an air injection hole communicated with the second air storage groove; the gas injection holes are respectively vertical to the first gas storage groove and the second gas storage groove; the hollow rotating shaft is used for conveying the tail gas in the guide pipe to the gas storage tank; the gas storage tank is used for conveying tail gas to the first gas storage tank; the first gas storage tank is used for conveying tail gas to the second gas storage tank; the second gas storage tank is used for conveying tail gas to the gas injection holes; the shielding unit is used for sealing the second gas storage tank. When the gas storage tank works, tail gas in the guide pipe is conveyed into the gas storage tank through the hollow rotating shaft, and gas in the gas storage tank pushes the shielding unit to move upwards, so that the second gas storage tank is communicated with the gas injection hole; tail gas in the gas storage tank flows into the solution of the first tail gas purification tank through the first gas storage tank, the second gas storage tank and the gas orifice, so that the rotating plate rotates and is used for stirring the tail gas and the solution in the first purification tank; thereby improving the water absorption efficiency of the solution in the first purification tank.
Preferably, the shielding unit comprises a piston plate, a cylinder, a mounting frame and a closed column; the piston plate is arranged in the air storage tank; the bottom end of the air cylinder is fixedly connected with the piston plate, and the top end of the air cylinder penetrates through a top plate of the air storage tank to be fixedly connected with the mounting frame; the sealing column is fixedly arranged on the mounting frame and used for sealing the second gas storage tank; a through hole is formed in the piston plate and is communicated with an air inlet of the air cylinder; a spring is arranged between the mounting rack and the gas storage tank and is positioned on the outer layer of the cylinder; and a limiting block is arranged in the gas storage tank and used for limiting the piston plate.
When the air pressure in the air storage tank is increased, the piston plate pushes the air cylinder, the mounting frame and the sealing column to move upwards, the sealing column moves upwards in the second air storage groove at the moment, the maximum stroke of the sealing column cannot be separated from the second air storage groove, and the second air storage groove is communicated with the air injection hole at the moment; the air cylinder is matched with the piston plate to increase the stroke of the closed column moving in the second air storage tank, and in the embodiment, if the air cylinder is replaced by a fixed rod, the air cylinder can be implemented only by increasing the height of the air storage tank; therefore, the air cylinder and the piston plate are matched to reduce the height of the air storage tank, so that the volume of the air storage tank is reduced, and the space utilization rate is improved; meanwhile, the volume of the absorption liquid is indirectly improved, and the absorption efficiency of the invention on the tail gas is further improved.
Preferably, the spraying module comprises a first liquid inlet pipe, a liquid storage box, a second liquid inlet pipe, a rubber spray pipe, a swinging ball and a connecting piece; the bottom end of the first liquid inlet pipe is fixedly arranged on the top surface of the mounting frame, and the top end of the first liquid inlet pipe is rotatably arranged on the top plate of the first tail gas purification tank; the liquid storage boxes are arranged on the first liquid inlet pipe, and are uniformly distributed along the axial direction of the first liquid inlet pipe; the second liquid inlet pipe is fixedly arranged on the side surface of the liquid storage box; the rubber spray pipes are fixedly arranged on the second liquid inlet pipe, and the number of the rubber spray pipes is multiple; the swinging ball is fixedly arranged at the bottom of the rubber spray pipe; the connecting piece is fixedly arranged between two adjacent swinging balls and is used for preventing the swinging balls from colliding; when the mounting bracket drives No. two feed liquor pipes through a feed liquor pipe and rotates, rubber spray pipe and No. two feed liquor pipe synchronous rotation, the swing ball is used for cooperating the swing of rubber spray pipe, and the ball easily bumps at the wobbling in-process simultaneously to reduced the life of device, kept apart through the connecting piece between the swing ball, thereby avoided the striking between the swing ball.
The absorption liquid flows into the second liquid inlet pipe through the first liquid inlet pipe and the liquid storage box, and the liquid in the second liquid inlet pipe is sprayed out through the rubber spray pipe and is used for reabsorbing the tail gas which is not completely absorbed in the air; the mount frame drives a feed liquor pipe synchronous rotation when rotating to make the rubber spray tube carry out even atomizing to the tail gas in the purifying tank and absorb, improved the purification efficiency of tail gas.
Preferably, the connecting member is one of a connecting rod, a spring and a steel wire. The connecting piece is used for isolating the adjacent swinging balls; when the connecting piece is the spring, can play wobbling effect along the direction between the position between two adjacent pendulum balls to the spraying efficiency of rubber spray tube has been improved.
Preferably, the bottom surface of the deslagging plate is provided with a counter-flow prevention unit for preventing impurity dust in the collecting tank from flowing into the deslagging cylinder; the backflow prevention unit comprises a plurality of flexible rubber sheets which are fixedly arranged on the bottom surface of the slag removal plate, and the flexible rubber sheets surround a closed cylinder;
preferably, the middle part of the outer surface of the flexible rubber sheets is provided with a tension spring which is in a ring shape and used for tensioning the flexible rubber sheets.
The invention has the following beneficial effects:
1. according to the VOCs tail gas purification system, the slag removal module and the collection module are matched to absorb impurities in the tail gas, and the air floatation module and the spraying module are matched to absorb the tail gas with the impurities removed, so that the purification capacity of the system on the organic volatile tail gas is improved.
2. The VOCs tail gas purification system comprises a deslagging cylinder, a filter head and a deslagging plate, wherein the deslagging cylinder is matched with the filter head to remove impurities in tail gas, and the impurities in the deslagging cylinder flow into a collecting tank through the deslagging plate to be collected; the filter head is conical and is used for preventing impurities in the tail gas from blocking the filter head, and the lower end of the curved surface of the filter head is provided with a first dust removing port which is used for discharging dust in the filter head; the ash removal mouth seals through the shielding plate, and its impurity that is used for preventing to remove the slag section of thick bamboo flows into in the filter head through ash removal mouth No. one.
3. The VOCs tail gas purification system comprises an air floatation module, a gas storage tank, a rotary plate and a shielding unit, wherein the air floatation module comprises a hollow rotary shaft, the gas storage tank, the rotary plate and the shielding unit; tail gas flows into the first tail gas purification tank through the hollow rotating shaft, the gas storage tank and the rotating plate and is used for stirring solution in the tail gas purification tank; the shielding unit is used for controlling the opening and closing of the second gas storage tank in the rotating plate through matching with the gas storage tank, and is used for preventing solution in the first tail gas purification tank from flowing into the second gas storage tank of the rotating plate.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion B of FIG. 1;
FIG. 4 is a cross-sectional view C-C of FIG. 1;
FIG. 5 is a cross-sectional view taken along line D-D of FIG. 1;
FIG. 6 is an enlarged view of E in FIG. 1;
in the figure: a slagging-off jar 1, a tail gas purification jar 11, the collecting vat 12, slagging-off module 13, a slagging-off section of thick bamboo 14, filter head 15, remove the cinder plate 16, opening 17, filter hole 18, ash removal mouth 19, shielding plate 2, spray module 21, hollow rotating shaft 22, gas holder 23, rotor plate 24, shelter from unit 25, gas receiver 26, No. two gas receivers 27, fumarole 28, piston plate 29, cylinder 3, mounting bracket 31, closed post 32, a feed liquor pipe 33, liquid storage box 34, No. two feed liquor pipes 35, rubber spray tube 36, swing ball 37, connecting piece 38, prevent unit 39 against current, polylith flexible sheet rubber 4, tension spring 41.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, the system for purifying the tail gas of the VOCs comprises a first deslagging tank 1 and a first tail gas purifying tank 11, wherein the tail gas is filtered by the first deslagging tank 1, and the filtered tail gas is conveyed to the first tail gas purifying tank 11 through a conduit for absorption; the method is characterized in that: a deslagging module 13 and a collecting tank 12 are arranged in the first deslagging tank 1, and the deslagging module 13 is arranged above the collecting tank 12; the deslagging module 13 is used for filtering impurities in the tail gas, and the collecting tank 12 is used for collecting the impurities in the deslagging module 13; the first tail gas purification tank 11 is internally provided with an air floatation module 2 and a spraying module 21; the air floatation module is used for absorbing the waste gas after deslagging; the spraying module 21 is used for conveying absorption liquid to the air floatation module;
the deslagging module 13 comprises a deslagging cylinder 14, a filter head 15 and a deslagging plate 16; the slag removing cylinder 14 is fixedly arranged on the lower surface of an upper bottom plate in the first slag removing tank 1, and the bottom end of the slag removing cylinder 14 is in seamless connection with the inner wall of the first slag removing tank 1 through a closing plate; the filter head 15 is fixedly arranged on the inner wall of the deslagging cylinder 14; the deslagging plate 16 is fixedly arranged at the bottom end of the deslagging cylinder 14, and a first opening 17 is formed in the center of the deslagging plate 16 and used for conveying impurities in the deslagging cylinder 14 to the collecting tank 12; the deslagging plate 16 is provided with an air inlet which is connected with a tail gas input pipe and is used for conveying tail gas into the deslagging cylinder 14; the filter head 15 is conical, the tip of the filter head 15 is provided with a filter hole 18, the lower end of the curved surface of the filter head 15 is provided with a first ash removal port 19, and the curved surface of the filter head 15 is hinged with a baffle plate 2; the shielding plate 2 is used for removing ash from the interior of the filter head 15.
When the device works, tail gas flows into the upper part of the slag removing plate 16 through the tail gas input pipe and the gas inlet; after the tail gas flows into the deslagging cylinder 14, the tail gas flows into the outer layer of the deslagging cylinder 14 from the filtering holes 18 of the filtering head 15, then the tail gas is conveyed into the first tail gas purification tank 11 through the guide pipe, at the moment, the air flotation module dissolves and absorbs the tail gas, and the spraying module 21 is used for performing spray-type absorption on the residual tail gas after being treated by the air flotation module.
As an embodiment of the present invention, the air flotation module includes a hollow rotating shaft 22, an air storage tank 23, a rotating plate 24, and a shielding unit 25; the hollow rotating shaft 22 is rotatably connected with the guide pipe through a bearing; the upper end of the hollow rotating shaft 22 is fixedly connected with the gas storage tank 23, and the hollow rotating shaft 22 is used for conveying the tail gas in the guide pipe to the gas storage tank 23; the number of the rotating plates 24 is multiple, and the rotating plates 24 are uniformly arranged on the outer surface of the side wall of the air storage tank 23 in a circumferential arrangement manner; the side surface of the rotating plate 24, which is in contact with the air storage tank 23, is provided with a first air storage tank 26; the top surface of the rotating plate 24 is provided with a second air storage groove 27, and the side surface of the rotating plate 24 is provided with an air injection hole 28 communicated with the second air storage groove 27; the gas injection holes 28 are respectively vertical to the first gas storage groove 26 and the second gas storage groove 27; the hollow rotating shaft 22 is used for conveying the tail gas in the guide pipe to a gas storage tank 23; the gas storage tank 23 is used for conveying tail gas to a first gas storage tank 26; the first gas storage tank 26 is used for conveying tail gas to the second gas storage tank 27; the second gas storage tank 27 is used for conveying the tail gas to the gas injection holes 28; the shielding unit 25 is used for sealing the second air storage tank 27. When the gas storage tank works, tail gas in the guide pipe is conveyed into the gas storage tank 23 through the hollow rotating shaft 22, and gas in the gas storage tank 23 pushes the shielding unit 25 to move upwards, so that the second gas storage tank 27 is communicated with the gas injection hole 28; tail gas in the gas storage tank 23 flows into the solution in the first tail gas purification tank 11 through the first gas storage tank 26, the second gas storage tank 27 and the gas injection hole 28, so that the rotating plate 24 rotates and is used for stirring the tail gas and the solution in the first purification tank; thereby improving the water absorption efficiency of the solution in the first purification tank.
As an embodiment of the present invention, the shielding unit 25 includes a piston plate 29, a cylinder 3, a mounting bracket 31, and a closing column 32; the piston plate 29 is arranged in the air storage tank 23; the bottom end of the cylinder 3 is fixedly connected with the piston plate 29, and the top end of the cylinder 3 passes through the top plate of the air storage tank 23 to be fixedly connected with the mounting frame 31; the sealing column 32 is fixedly arranged on the mounting frame 31, and the sealing column 32 is used for sealing the second air storage tank 27; a through hole is formed in the piston plate 29 and is communicated with an air inlet of the air cylinder 3; a spring is arranged between the mounting frame 31 and the air storage tank 23 and is positioned on the outer layer of the air cylinder 3; and a limiting block is arranged in the air storage tank 23 and used for limiting the piston plate 29.
When the air pressure in the air storage tank 23 is increased, the piston plate 29 pushes the air cylinder 3, the mounting frame 31 and the sealing column 32 to move upwards, at the moment, the sealing column 32 moves upwards in the second air storage groove 27, the maximum stroke of the sealing column 32 cannot be separated from the second air storage groove 27, and at the moment, the second air storage groove 27 is communicated with the air injection hole 28; the cylinder 3 is matched with the piston plate 29 to increase the stroke of the closed column 32 moving in the second air storage tank 27, and in the embodiment, if the cylinder 3 is replaced by a fixed rod, the height of the air storage tank 23 needs to be increased; therefore, the cylinder 3 and the piston plate 29 are matched to reduce the height of the air storage tank 23, so that the volume of the air storage tank 23 is reduced, and the space utilization rate is improved; meanwhile, the volume of the absorption liquid is indirectly improved, and the absorption efficiency of the invention on the tail gas is further improved.
As an embodiment of the present invention, the spraying module 21 includes a first liquid inlet pipe 33, a liquid storage box 34, a second liquid inlet pipe 35, a rubber nozzle 36, a swing ball 37 and a connecting member 38; the bottom end of the first liquid inlet pipe 33 is fixedly arranged on the top surface of the mounting frame 31, and the top end of the first liquid inlet pipe 33 is rotatably arranged on the top plate of the first tail gas purification tank 11; the number of the liquid storage boxes 34 is multiple, the liquid storage boxes 34 are all arranged on the first liquid inlet pipe 33, and the liquid storage boxes 34 are uniformly distributed along the axial direction of the first liquid inlet pipe 33; the second liquid inlet pipe 35 is fixedly arranged on the side surface of the liquid storage box 34; the rubber spray pipes 36 are fixedly arranged on the second liquid inlet pipe 35, and the number of the rubber spray pipes 36 is multiple; the swinging ball 37 is fixedly arranged at the bottom of the rubber spray pipe 36; the connecting piece 38 is fixedly arranged between two adjacent swinging balls 37 and is used for preventing collision between the swinging balls 37; when the mounting bracket 31 drives the second liquid inlet pipe 35 to rotate through the first liquid inlet pipe 33, the rubber spray pipe 36 and the second liquid inlet pipe 35 synchronously rotate, the swing ball 37 is used for matching with the swing of the rubber spray pipe 36, and meanwhile, the swing ball 37 easily collides in the swing process, so that the service life of the device is shortened, the swing ball 37 is isolated through the connecting piece 38, and the collision between the swing balls 37 is avoided.
When the tail gas absorption device works, absorption liquid flows into the second liquid inlet pipe 35 through the first liquid inlet pipe 33 and the liquid storage box 34, and liquid in the second liquid inlet pipe 35 is sprayed out through the rubber spray pipe 36 and is used for reabsorbing tail gas which is not completely absorbed in air; when the mounting bracket 31 rotates, the first liquid inlet pipe 33 is driven to rotate synchronously, so that the tail gas in the first purifying tank is absorbed by the rubber spray pipe 36 in an even spraying manner, and the tail gas purifying efficiency is improved.
As an embodiment of the present invention, the connecting member 38 is one of a connecting rod, a spring and a steel wire. The connecting piece 38 is used for isolating the adjacent swing balls 37; when the connecting piece 38 is a spring, the two adjacent swinging balls 37 can swing in the direction between the positions, so that the spraying efficiency of the rubber spray pipe 36 is improved.
As an embodiment of the present invention, the bottom surface of the deslagging plate 16 is provided with a reverse flow prevention unit 39 for preventing the impurity dust in the collecting tank 12 from flowing into the deslagging cylinder 14; the backflow prevention unit 39 comprises a plurality of flexible rubber sheets 4, the plurality of flexible rubber sheets 4 are fixedly arranged on the bottom surface of the slag removing plate 16, and the plurality of flexible rubber sheets 4 surround to form a closed cylinder shape;
in one embodiment of the present invention, a tension spring 41 is disposed in the middle of the outer surface of the plurality of flexible rubber sheets 4, and the tension spring 41 is a ring type for tensioning the plurality of flexible rubber sheets 4.
When in use, tail gas flows into the upper part of the slag removing plate 16 through the tail gas input pipe and the gas inlet; after the tail gas flows into the deslagging cylinder 14, the tail gas flows into the outer layer of the deslagging cylinder 14 from the filtering holes 18 of the filtering head 15, then the tail gas is conveyed into the air storage tank 23 through the guide pipe and the hollow rotating shaft 22, when the air pressure in the air storage tank 23 is increased, the piston plate 29 pushes the air cylinder 3, the mounting frame 31 and the closed column 32 to move upwards, at the moment, the closed column 32 moves upwards in the second air storage tank 27, the maximum stroke of the closed column 32 cannot be separated from the second air storage tank 27, and at the moment, the second air storage tank 27 is communicated with the air injection hole 28; meanwhile, the tail gas in the gas storage tank 23 flows into the solution in the first tail gas purification tank 11 through the first gas storage tank 26, the second gas storage tank 27 and the gas injection hole 28, so that the rotating plate 24 rotates to stir the tail gas and the solution in the first purification tank; thereby improving the absorption efficiency of the solution in the first purification tank to water;
the absorption liquid flows into a second liquid inlet pipe 35 through a first liquid inlet pipe 33 and a liquid storage box 34, and the liquid in the second liquid inlet pipe 35 is sprayed out through a rubber spray pipe 36 and is used for reabsorbing the tail gas which is not completely absorbed in the air; when the mounting bracket 31 rotates, the first liquid inlet pipe 33 is driven to rotate synchronously, so that the tail gas in the first purifying tank is absorbed by the rubber spray pipe 36 in an even spraying manner, and the tail gas purifying efficiency is improved.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A VOCs tail gas purification system comprises a first deslagging tank (1) and a first tail gas purification tank (11), tail gas is filtered through the first deslagging tank (1), and the filtered tail gas is conveyed to the first tail gas purification tank (11) through a guide pipe to be absorbed; the method is characterized in that: a deslagging module (13) and a collecting tank (12) are arranged in the first deslagging tank (1), and the deslagging module (13) is arranged above the collecting tank (12); the deslagging module (13) is used for filtering impurities in the tail gas, and the collecting tank (12) is used for collecting the impurities in the deslagging module (13); an air floatation module and a spraying module (21) are arranged in the first tail gas purification tank (11); the air floatation module is used for absorbing the waste gas after deslagging; the spraying module (21) is used for conveying absorption liquid to the air flotation module;
the deslagging module (13) comprises a deslagging cylinder (14), a filter head (15) and a deslagging plate (16); the slag removing cylinder (14) is fixedly arranged on the lower surface of the upper bottom plate in the first slag removing tank (1), and the bottom end of the slag removing cylinder (14) is in seamless connection with the inner wall of the first slag removing tank (1) through a sealing plate; the filter head (15) is fixedly arranged on the inner wall of the deslagging barrel (14); the slag removing plate (16) is fixedly arranged at the bottom end of the slag removing cylinder (14), and a first opening (17) is formed in the center of the slag removing plate (16) and used for conveying impurities in the slag removing cylinder (14) to the collecting tank (12); the deslagging plate (16) is provided with an air inlet which is connected with a tail gas input pipe and is used for conveying tail gas into the deslagging cylinder (14); the filter head (15) is conical, the tip of the filter head (15) is provided with a filter hole (18), the lower end of the curved surface of the filter head (15) is provided with a first ash removal port (19), and the curved surface of the filter head (15) is hinged with a baffle plate (2); the shielding plate (2) is used for removing ash in the filter head (15);
the air floatation module comprises a hollow rotating shaft (22), an air storage tank (23), a rotating plate (24) and a shielding unit (25); the hollow rotating shaft (22) is rotatably connected with the guide pipe through a bearing; the upper end of the hollow rotating shaft (22) is fixedly connected with the gas storage tank (23); the number of the rotating plates (24) is multiple, and the rotating plates (24) are uniformly arranged on the outer surface of the side wall of the air storage tank (23) in a circumferential arrangement manner; the side surface of the rotating plate (24) which is in contact with the air storage tank (23) is provided with a first air storage tank (26); a second air storage groove (27) is formed in the top surface of the rotating plate (24), and an air injection hole (28) communicated with the second air storage groove (27) is formed in the side surface of the rotating plate (24); the gas injection holes (28) are respectively vertical to the first gas storage groove (26) and the second gas storage groove (27); the hollow rotating shaft (22) is used for conveying the tail gas in the guide pipe to a gas storage tank (23); the gas storage tank (23) is used for conveying tail gas to a first gas storage tank (26); the first gas storage tank (26) is used for conveying tail gas to the second gas storage tank (27); the second gas storage tank (27) is used for conveying the tail gas to the gas injection holes (28); the shielding unit (25) is used for sealing the second gas storage tank (27);
the shielding unit (25) comprises a piston plate (29), a cylinder (3), a mounting frame (31) and a sealing column (32); the piston plate (29) is arranged in the air storage tank (23); the bottom end of the air cylinder (3) is fixedly connected with the piston plate (29), and the top end of the air cylinder (3) penetrates through the top plate of the air storage tank (23) to be fixedly connected with the mounting frame (31); the closed column (32) is fixedly arranged on the mounting frame (31), and the closed column (32) is used for closing the second air storage tank (27); a through hole is formed in the piston plate (29) and is communicated with an air inlet of the air cylinder (3); a spring is arranged between the mounting rack (31) and the air storage tank (23), and the spring is positioned on the outer layer of the air cylinder (3); a limiting block is arranged in the air storage tank (23) and used for limiting the piston plate (29);
the spraying module (21) comprises a first liquid inlet pipe (33), a liquid storage box (34), a second liquid inlet pipe (35), a rubber spray pipe (36), a swinging ball (37) and a connecting piece (38); the bottom end of the first liquid inlet pipe (33) is fixedly arranged on the top surface of the mounting frame (31), and the top end of the first liquid inlet pipe (33) is rotatably arranged on the top plate of the first tail gas purification tank (11); the liquid storage boxes (34) are multiple in number, the liquid storage boxes (34) are all arranged on the first liquid inlet pipe (33), and the liquid storage boxes (34) are uniformly distributed along the axial direction of the first liquid inlet pipe (33); the second liquid inlet pipe (35) is fixedly arranged on the side surface of the liquid storage box (34); the rubber spray pipes (36) are fixedly arranged on the second liquid inlet pipe (35), and the number of the rubber spray pipes (36) is multiple; the swinging ball (37) is fixedly arranged at the bottom of the rubber spray pipe (36); the connecting piece (38) is fixedly arranged between two adjacent swinging balls (37) and is used for preventing collision between the swinging balls (37);
the connecting piece (38) is one of a connecting rod, a spring and a steel wire;
the bottom surface of the deslagging plate (16) is provided with a counter-flow prevention unit (39) which is used for preventing impurity dust in the collecting tank (12) from flowing into the deslagging cylinder (14); the backflow prevention unit (39) comprises a plurality of flexible rubber sheets (4), the flexible rubber sheets (4) are fixedly arranged on the bottom surface of the slag removing plate (16), and the flexible rubber sheets (4) enclose a closed cylinder shape;
the middle part of the outer surface of the flexible rubber sheets (4) is provided with a tensioning spring (41), and the tensioning spring (41) is of a circular ring type and is used for tensioning the flexible rubber sheets (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810818334.8A CN108905526B (en) | 2018-07-24 | 2018-07-24 | VOCs tail gas clean-up system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810818334.8A CN108905526B (en) | 2018-07-24 | 2018-07-24 | VOCs tail gas clean-up system |
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| CN108905526A CN108905526A (en) | 2018-11-30 |
| CN108905526B true CN108905526B (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810818334.8A Active CN108905526B (en) | 2018-07-24 | 2018-07-24 | VOCs tail gas clean-up system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110624322B (en) * | 2019-10-29 | 2020-05-26 | 河北博路众鼎化工设备制造有限公司 | Waste gas treatment conveying device for environment-friendly equipment |
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| JPH11228265A (en) * | 1998-02-12 | 1999-08-24 | Sanyu Kogyo Kk | Vertical type apparatus for rapidly fermenting livestock feces |
| CN202921116U (en) * | 2012-12-03 | 2013-05-08 | 张谦华 | Rotary spraying dust removal desulfurizer |
| CN207493367U (en) * | 2017-09-22 | 2018-06-15 | 深圳朋凯印刷有限公司 | A kind of exhaust system of printing equipment |
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| CN108905526A (en) | 2018-11-30 |
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