CN117101342A - Treatment equipment and method for tar-containing waste gas - Google Patents

Treatment equipment and method for tar-containing waste gas Download PDF

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Publication number
CN117101342A
CN117101342A CN202310889305.1A CN202310889305A CN117101342A CN 117101342 A CN117101342 A CN 117101342A CN 202310889305 A CN202310889305 A CN 202310889305A CN 117101342 A CN117101342 A CN 117101342A
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China
Prior art keywords
oil
waste gas
tar
active carbon
carbon powder
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Pending
Application number
CN202310889305.1A
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Chinese (zh)
Inventor
杨再华
张波
陈诗雨
倪张进
雷强
刘辉
陈德彬
陈明怡
曾亚玲
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Xiamen Aidite Environmental Technology Co ltd
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Xiamen Aidite Environmental Technology Co ltd
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Priority to CN202310889305.1A priority Critical patent/CN117101342A/en
Publication of CN117101342A publication Critical patent/CN117101342A/en
Pending legal-status Critical Current

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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
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention discloses a treatment device and a treatment method for tar-containing waste gas, which belong to the technical field of tar-containing waste gas treatment, and comprise a venturi tube, a cloth bag dust remover, a cyclone dust remover, an oil scrubber, an incineration device and a chimney which are sequentially arranged along the waste gas conveying direction, wherein an air inlet of the venturi tube is communicated with a tar-containing waste gas pipeline, an air outlet of the venturi tube is communicated with an air inlet of the cyclone dust remover, an air outlet of the cyclone dust remover is communicated with an air inlet of the cloth bag dust remover, a discharge port of the cyclone dust remover is respectively communicated with a solid waste incinerator and an active carbon powder storage tank, a first discharge port of the solid waste incinerator is communicated with the active carbon powder storage tank, a discharge port of the active carbon powder storage tank is communicated to a venturi tube, the oil scrubber is provided with a circulating oil tank, and a liquid discharge port of the circulating oil tank is communicated with a fuel boiler. The invention can effectively reduce the odor concentration and secondary pollution through the processes of activated carbon adsorption, oil washing and incineration.

Description

Treatment equipment and method for tar-containing waste gas
Technical Field
The invention belongs to the technical field of tar-containing waste gas treatment, and particularly relates to a treatment device and a treatment method for tar-containing waste gas.
Background
The carbon roasting smoke, waterproof coiled material smoke and waste gas of rubber factories contain pollutants such as aromatic hydrocarbon, tar, particulate matters and the like, the waste gas has large peculiar smell, can be discharged after being treated, the waste gas is pretreated by adopting a water washing, biological oxidation and dry type filter, particulate matters and tar filter cotton are intercepted or oxidized by microorganisms, the filter material is replaced frequently, the biological oxidation efficiency is low, the water washing effect is poor, and clear water is required to be replaced frequently. There is therefore a need for a treatment apparatus and method for tar-containing waste gas that effectively reduces the concentration of malodor.
Disclosure of Invention
The present invention is directed to a device and a method for treating tar-containing waste gas, which overcome at least one of the above-mentioned drawbacks of the prior art.
To achieve the purpose, the invention adopts the following technical scheme:
the invention provides a treatment device for tar-containing waste gas, which comprises a venturi tube, a cyclone dust collector, a cloth bag dust collector, an oil scrubber, an incinerator and a chimney, wherein the venturi tube, the cyclone dust collector, the cloth bag dust collector, the oil scrubber, the incinerator and the chimney are sequentially arranged along the waste gas conveying direction, an air inlet of the venturi tube is communicated with a tar-containing waste gas pipeline, an air outlet of the venturi tube is connected with an air inlet of the cyclone dust collector, an air outlet of the cyclone dust collector is communicated with an air inlet of the cloth bag dust collector, a discharge port of the cyclone dust collector is respectively communicated with a solid waste incinerator and an active carbon powder storage tank, a first discharge port of the solid waste incinerator is communicated with the active carbon powder storage tank, active carbon powder is arranged in the active carbon powder storage tank, a discharge port of the active carbon powder storage tank is communicated to a venturi tube, so that tar-containing waste gas contacts with the active carbon powder at the venturi tube, the oil scrubber is provided with a circulating oil tank, and the discharge port of the circulating oil tank is communicated with a fuel boiler.
Preferably, the oil washing tower comprises a tower body, a circulating spray system, an air distribution system, a motor, a transmission assembly, fillers, frame bodies, screen plates, springs and clamping beads, wherein the spray end of the circulating spray system is located above the inside of the tower body, the air distribution end of the air distribution system is located below the inside of the tower body, two frame bodies are arranged in the tower body between the spray end of the circulating spray system and the air distribution end of the air distribution system and are distributed up and down, the two frame bodies are respectively filled with the same or different fillers, the bottom of each frame body is provided with the screen plates, a plurality of accommodating grooves are formed in the side wall of each frame body, springs are fixed in each accommodating groove, the clamping beads are connected with the accommodating grooves in a sliding fit mode, a plurality of clamping grooves which are clamped with the clamping beads are distributed on the inner wall of the tower body at intervals along the height direction, the motor is fixed at the bottom of the tower body, and the motor drives the transmission assembly to drive the spray end of the circulating system and the air distribution end of the air distribution system to rotate respectively.
Preferably, the frame body is internally provided with a containing cavity, the containing cavity is provided with a first containing section and a second containing section, the first containing section is positioned below the second containing section, the longitudinal section of the first containing section is in an inverted trapezoid shape, and the longitudinal section of the second containing section is in a rectangle shape.
Preferably, the accommodating grooves are equidistantly and alternately distributed along the circumferential direction of the frame body.
The fillers in the two frames adopt fillers with the same or different specific surface areas, porosities and corrosion resistance.
Preferably, the circulation spraying system comprises a first oil discharge pipe, a circulation oil tank, a second oil discharge pipe, a circulation pump, a circulation pipe, a first bearing seat, an oil inlet main pipe, a first sealing bearing, a first sealing member, an oil distribution disc, an oil distribution pipe and first atomizer heads, wherein the first oil discharge pipe is fixedly communicated with the lower part of the tower body, the first oil discharge pipe is communicated with the circulation oil tank, washing oil is arranged in the circulation oil tank, the second oil discharge pipe is fixedly communicated with the lower part of the circulation oil tank, a liquid outlet of the second oil discharge pipe is communicated with an oil inlet of the fuel boiler, the first bearing seat is fixedly arranged on the outer side wall of the upper part of the tower body, the left end of the oil inlet main pipe penetrates through the first bearing seat and the side wall of the tower body and extends to the tower body, a plurality of oil distribution discs are fixedly communicated with the left side of the oil distribution disc along the circumferential equidistant interval of the oil distribution disc, the first atomizer heads on the adjacent oil distribution disc are arranged at equal intervals along the length direction, the first atomizer heads on the adjacent oil distribution disc are arranged in a staggered mode, the first sealing member is arranged between the oil inlet main pipe and the side wall of the tower body, the first sealing member is fixedly arranged in the oil inlet, the bottom end of the circulation pipe is positioned on the circulation pipe and the circulating pump extends to the inner side of the first bearing.
Preferably, the gas distribution system comprises an air inlet main pipe, a gas distribution disc, gas distribution rods, second atomizing nozzles, a second bearing, second sealing bearings and second sealing members, wherein the second bearing is fixed at the central position of the bottom of the tower body, the top end of the air inlet main pipe penetrates through the second bearing and the bottom wall of the tower body and extends to the lower part in the tower body, the gas distribution discs are fixedly communicated with the gas distribution disc at equal intervals along the circumferential direction, the gas distribution rods are fixedly communicated with the gas distribution disc at equal intervals, the top of each gas distribution rod is fixedly communicated with the second atomizing nozzles at equal intervals along the length direction, the second sealing bearings are fixed in the air inlet main pipe, and the exhaust pipe of the bag dust collector extends into the air inlet main pipe and penetrates through the second sealing bearings.
Preferably, the transmission assembly comprises a first rotating shaft, a first belt pulley, a first flat belt, a second belt pulley, a first bevel gear, a second rotating shaft, a third bearing seat, a third belt pulley, a second flat belt and a fourth belt pulley, wherein the first rotating shaft is fixed at the bottom of the motor, the first belt pulley is fixed at the middle part of the first rotating shaft, the second belt pulley is fixed at the lower part of the air inlet manifold, the first belt pulley is in transmission connection with the second belt pulley through the first flat belt, the first bevel gear is fixed at the bottom of the first rotating shaft, the third bearing seat is fixed at the bottom of the tower body, the left end of the second rotating shaft penetrates through the third bearing seat and is fixed with the second bevel gear, the second bevel gear is meshed with the first bevel gear, the third belt pulley is fixed at the right end of the second rotating shaft, the fourth belt pulley is fixed at the right part of the oil inlet manifold, and the third belt pulley is in transmission connection with the fourth belt pulley through the second flat belt.
Preferably, the side wall of the tower body is provided with a sealing door, a wire mesh demister is fixed in the tower body, and the wire mesh demister is positioned above the spraying end of the circulating spraying system.
The invention also provides a treatment method of the tar-containing waste gas, which adopts the treatment equipment for treating the tar-containing waste gas and comprises the following steps: the method comprises the steps of feeding tar-containing waste gas into a venturi tube from an air inlet of the venturi tube, feeding active carbon powder into a throat of the venturi tube from an active carbon powder storage tank, enabling the active carbon powder to be in quick contact with the tar-containing waste gas at the throat, enabling tar to adhere to the surface of the active carbon powder, enabling the waste gas and the active carbon powder to enter a cyclone dust collector for treatment, separating the active carbon powder from the waste gas, enabling the separated active carbon powder to enter the active carbon storage tank for recycling, enabling the active carbon powder to enter a solid waste incinerator for recycling after recycling for multiple times, enabling the active carbon powder after recycling to be returned to the active carbon powder storage tank, enabling the waste gas after the recycling to enter a bag dust collector for removing particles in the waste gas after the cyclone dust collector, enabling the waste gas after the waste gas is processed through the bag dust collector to enter an oil scrubber, enabling the liquid-gas ratio to be 2.5-5:1, removing tar, aromatic hydrocarbon pollutants and volatile organic matters in the waste gas, enabling an absorbent to be absorbed and balanced to be fed into a fuel boiler, enabling the waste gas after the oil scrubber to be processed, enabling the residual organic matters in the waste gas to react with oxygen, and enabling the waste gas to be discharged through a chimney.
The beneficial effects of the invention are as follows:
1. the odor concentration can be effectively reduced through the activated carbon adsorption, oil washing and incineration processes, the influence on the environment and surrounding residents is reduced, and secondary pollution is reduced.
2. Through the venturi and the arrangement of the active carbon powder storage tank, the quick contact of the tar-containing waste gas and the active carbon powder is realized at the throat of the venturi, and the tar can be well adhered to the surface of the active carbon powder, so that the tar is separated from the tar-containing waste gas, and the tar content in the tar-containing waste gas is reduced.
3. The active carbon powder is separated from the waste gas through the cyclone dust collector and treated in the solid waste incinerator, tar attached to the active carbon powder is incinerated, the regeneration of the active carbon powder is realized, the regenerated active carbon powder is recycled to the active carbon powder storage tank, the recycling of the active carbon powder is realized, and the cost is reduced. Particulate matter in the exhaust gas is removed by a bag-type dust collector.
4. The absorbent with balanced absorption is sent into a fuel oil boiler to be used as fuel of the boiler, thereby realizing resource utilization.
5. Through setting up two casings that distribute from top to bottom, can pack different packing in the framework, there is the distance between two casings, forms two packing layers to distance between two casings is adjustable, also can pack the same packing in two frameworks, stacks two casings and makes up and forms a packing layer, changes the height of whole packing layer, can adapt to different operation demands.
6. The side wall of the frame body is provided with the accommodating groove, the spring and the clamping bead structure, and the accommodating groove is matched with the clamping groove on the inner wall of the tower body, so that the position of the upper frame body and the lower frame body can be changed, and the distance between the upper frame body and the lower frame body is changed; the position of the frame body is adjusted simply and conveniently, and the frame body is only pushed by force, so that the arrangement of other complex structures is not needed.
7. By the arrangement of the first accommodating section, on one hand, the accommodating groove is provided with a abdication; on the other hand, in the process of flowing the waste gas from bottom to top, the longitudinal section of the first accommodating section is in an inverted trapezoid shape, and in the process of rising the waste gas, the cross section area of the first accommodating section is gradually increased from bottom to top, so that the rising rate of the waste gas is slowed down, which is beneficial to liquid phase mass transfer and improves the treatment effect. And when the rising speed of the waste gas in the first accommodating section is slowed down, the waste gas enters the second accommodating section and rises to the filler layer for discharge at the rising speed of the temperature, and the combination mode can well realize the liquid phase mass transfer effect, ensure the sufficient contact time of gas and liquid and simultaneously ensure the treatment efficiency.
8. The motor drives the oil inlet main pipe to rotate through the transmission assembly, so that the oil distribution disc rotates, each oil distribution pipe and the spray heads on the oil distribution pipe are driven to rotate in the spraying process, the position exchange and the height exchange of the first atomization spray heads are realized, the absorbent spraying can be realized comprehensively and uniformly on the filler, and the mass transfer effect is not influenced due to the fact that the absorbent is concentrated at a certain position of the filler.
9. The motor drives the air inlet main pipe to rotate through the transmission assembly, so that the air distribution disc rotates, the air distribution rod and the second atomizing nozzle on the air distribution rod are driven to rotate, the second atomizing nozzle rotates while atomizing and spraying waste gas, so that the waste gas is distributed more uniformly and comprehensively, and the absorbent which is uniformly and comprehensively combined is fully contacted in the filler, so that efficient mass transfer is realized.
10. Through drive assembly's design, can realize that a drive source (motor) drives first atomizer and second atomizer respectively and rotate the operation to rotation type is different, design benefit reduces energy consumption and manufacturing cost.
Drawings
FIG. 1 is a block diagram of a system for treating tar-containing waste gas according to the present invention.
Fig. 2 is a schematic diagram showing a front view of an oil scrubber according to an embodiment of the present invention.
FIG. 3 is a schematic cross-sectional view of an oil scrubber according to an embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view of a frame and its upper structure according to an embodiment of the present invention.
Fig. 5 is a schematic top view of a frame, beads, and a screen according to an embodiment of the invention.
Fig. 6 is a schematic top view of an air distribution plate, an air distribution rod, and a second atomizer according to an embodiment of the present invention.
FIG. 7 is a schematic illustration of the cooperation of an oil intake manifold, a first seal bearing, and a circulation tube in accordance with an embodiment of the present invention.
FIG. 8 is a schematic diagram of the cooperation of an intake manifold, a second seal bearing, and an exhaust duct of a bag-type dust collector according to an embodiment of the present invention.
Fig. 9 is a schematic front view of a transmission assembly according to an embodiment of the present invention.
FIG. 10 is a schematic cross-sectional view of a two-oil scrubber according to an embodiment of the present invention.
The marks in the drawings are: 1-venturi tube, 2-cyclone dust collector, 3-bag dust collector, 4-oil scrubber, 5-incinerator, 6-chimney, 7-solid waste incinerator, 8-active carbon powder storage tank, 9-oil boiler, 41-tower body, 42-circulation spray system, 43-gas distribution system, 44-motor, 45-transmission component, 46-filler, 47-frame, 48-screen, 49-spring, 410-clamping bead, 471-accommodation groove, 411-clamping groove, 472-accommodation cavity, 4721-first accommodation section, 4722-second accommodation section, 421-first oil drain pipe, 422-circulation oil tank, 423-second oil drain pipe, 424-circulation pump, 425-circulation pipe, 426-first bearing seat, 427-oil inlet main, 428-first sealed bearing, 429-first sealed piece, 4210-oil distribution disc, 4211-oil distribution tube, 4212-first atomizer, 431-intake manifold, 432-gas distribution disc, 433-gas distribution rod, 434-second atomizer, 435-second sealed bearing, 436-second sealed bearing, 437-second sealed piece, 451-first rotating shaft, 452-first belt pulley, 453-first flat belt, 454-second belt pulley, 455-first bevel gear, 456-second bevel gear, 457-second rotating shaft, 458-third bearing, 459-third belt pulley, 4510-second flat belt, 4511-fourth belt pulley, 412-wire mist eliminator, 413-sealed door.
Detailed Description
The invention will now be further described with reference to the drawings and detailed description.
What is not described in detail in this specification is prior art known to those skilled in the art. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or refer to the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Embodiment one:
as shown in fig. 1 to 9, the treatment apparatus for tar-containing waste gas provided in this embodiment includes a venturi tube 1, a cyclone 2, a bag-type dust collector 3, an oil scrubber 4, an incinerator 5, and a chimney 6 sequentially arranged along the waste gas conveying direction, wherein an air inlet of the venturi tube 1 is communicated with a tar-containing waste gas pipe, an air outlet of the venturi tube 1 is communicated with an air inlet of the cyclone 2, an air outlet of the cyclone 2 is communicated with an air inlet of the bag-type dust collector 3, discharge ports of the cyclone 2 are respectively communicated with a solid waste incinerator 7 and an activated carbon powder storage tank 8, a first discharge port of the solid waste incinerator 7 is communicated with the activated carbon powder storage tank 8, activated carbon powder is provided in the activated carbon powder storage tank 8, a discharge port of the activated carbon powder storage tank 8 is communicated to a throat of the venturi tube 1, so that tar-containing waste gas contacts with the activated carbon powder at the throat of the venturi tube 1, the oil scrubber 4 is provided with a circulating oil tank 422, an absorbent is provided in the circulating oil tank 422, the absorbent is oil, the oil is and the like, and the circulating oil tank 422 is communicated with the boiler 9.
Through the venturi 1 and the arrangement of the active carbon powder storage tank 8, the quick contact of the tar-containing waste gas and the active carbon powder is realized at the throat of the venturi 1, and the tar can be well adhered to the surface of the active carbon powder, so that the tar is separated from the tar-containing waste gas, and the tar content in the tar-containing waste gas is reduced.
The activated carbon powder is separated from the waste gas through the bag-type dust collector 3 and treated in the solid waste incinerator 7, tar attached to the activated carbon powder is incinerated, the activated carbon powder is regenerated, the regenerated activated carbon powder is recycled to the activated carbon powder storage tank 8, and therefore the recycling of the activated carbon powder is realized, and the cost is reduced. Particulate matter in the exhaust gas is removed by bag dust removal 3.
The waste gas from which the activated carbon powder is removed is sent to an oil scrubber 4, and at the gas-liquid interface, pollutants such as tar, aromatic hydrocarbon and the like are diffused into the liquid phase and absorbed by the liquid phase. The absorbent with balanced absorption is sent into a fuel oil boiler 9 to be used as the fuel of the boiler, thereby realizing the resource utilization.
The waste gas treated by the oil scrubber 4 is sent to the incinerator 5 for advanced treatment, organic matters in the waste gas react with oxygen to generate carbon dioxide and water, no peculiar smell is generated, and finally purified gas is discharged from the chimney 6.
The oil washing tower 4 comprises a tower body 41, a circulating spray system 42, a gas distribution system 43, a motor 44, a transmission assembly 45, a filler 46, a frame body 47, a screen 48, springs 49 and clamping beads 410, wherein the spray end of the circulating spray system 42 is located above the inside of the tower body 41, the gas distribution end of the gas distribution system 43 is located below the inside of the tower body 41, two frame bodies 47 are arranged inside the tower body 41 between the spray end of the circulating spray system 42 and the gas distribution end of the gas distribution system 43, the two frame bodies 47 are distributed up and down, the two frame bodies 47 are respectively filled with the filler 46 with different specific surface areas, porosities and corrosion resistance, gaps are reserved between the two frame bodies 47, the bottom of each frame body 47 is provided with the screen 48, the side wall of each frame body 47 is provided with a plurality of accommodating grooves 471, the springs 49 are fixed in each accommodating groove 471, the clamping beads 410 are connected to each spring 49, the clamping beads 410 are in sliding fit with the accommodating grooves 471, the inner wall of the tower body 41 is provided with the clamping beads 44 in the height direction, the clamping beads are distributed along the motor height direction, the clamping beads are distributed along the height direction, the inner wall of the tower body 41, the clamping beads are distributed along the height direction, the motor 44 and the transmission assembly 44 are driven by the clamping beads are respectively, and the rotation of the rotating direction of the motor 44, and the clamping beads are arranged at the bottom of the frame body 44.
The packing plays a key role in the oil scrubber 4, so to speak, and is used as a mass transfer structure between the gas phase and the liquid phase, the selection of the packing and the distance between the upper packing layer and the lower packing layer influence the mass transfer effect of the gas phase and the liquid phase, and the packing is correspondingly regulated according to different requirements so as to obtain the optimal treatment effect and treatment efficiency. In this embodiment, two frames 47 are disposed up and down, and different fillers 46 are filled in the frames 47, so that a distance exists between the two frames 47, and the distance between the two frames 47 is adjustable, so that different operation requirements can be met.
By providing the housing groove 471, the spring 49 and the locking bead 410 on the side wall of the frame 47, and by engaging the locking groove 411 on the inner wall of the tower 41, the position of the upper and lower frames 47 can be changed, thereby changing the distance between the upper and lower frames 47. The adjustment is very convenient, only need push up or push down the framework 47, in the promotion process, card pearl 410 withdraw into accommodation groove 471, and spring 49 contracts, until card pearl 410 moves to next draw-in groove 411 position, and spring 49 extends, drives card pearl 410 card into draw-in groove 411 in, realizes the location to framework 47. The position adjustment of the frame body 47 is simple and convenient, and the frame body 47 is only pushed forcefully, so that the arrangement of other complex structures is not needed.
The housing 47 has a housing cavity 472 therein, the housing cavity 472 has a first housing section 4721 and a second housing section 4722, the first housing section 4721 is located below the second housing section 4722, the longitudinal section of the first housing section 4721 is in an inverted trapezoid shape, and the longitudinal section of the second housing section 4722 is in a rectangle shape. By the arrangement of the first accommodating section 4721, on one hand, the accommodating groove 471 is provided with a relief; on the other hand, in the process of making the waste gas flow from bottom to top, the longitudinal section of the first accommodating section 4721 is in an inverted trapezoid shape, and in the process of rising the waste gas, the cross section area of the first accommodating section 4721 is gradually increased from bottom to top, so that the rising rate of the waste gas is slowed down, which is beneficial to liquid phase mass transfer and improves the treatment effect. And when the rising speed of the waste gas in the first accommodating section 4721 is slowed down, the waste gas enters the second accommodating section 4722 to rise at the rising speed of the temperature until the filler 46 is discharged, and the combination mode can well realize the liquid phase mass transfer effect, ensure the sufficient contact time of gas and liquid and simultaneously ensure the treatment efficiency.
The receiving grooves 471 are equally spaced along the circumferential direction of the frame 47, so that the frame 47 and the tower 41 are uniformly stressed, and the connection stability of the frame is improved.
The circulation spray system 42 includes a first oil drain pipe 421, a circulation oil tank 422, a second oil drain pipe 423, a circulation pump 424, a circulation pipe 425, a first bearing seat 426, an oil inlet manifold 427, a first seal bearing 428, a first seal 429, an oil distribution disc 4210, an oil distribution pipe 4211, and a first atomizer 4212.
The lower part of the tower body 41 is fixedly communicated with a first oil discharge pipe 421, the first oil discharge pipe 421 is communicated with a circulating oil tank 422, washing oil is arranged in the circulating oil tank 422, the lower part of the circulating oil tank 422 is fixedly communicated with a second oil discharge pipe 423, a liquid outlet of the second oil discharge pipe 423 is communicated with an oil inlet of the oil boiler 9, the outer side wall of the upper part of the tower body 41 is fixedly provided with a first bearing seat 426, the left end of an oil inlet manifold 427 passes through the first bearing seat 426 and the side wall of the tower body 41 and extends to the tower body 41, an oil distributing disc 4210 is fixedly communicated in the tower body 41, a plurality of oil distribution pipes 4211 are fixedly communicated on the left side of the oil distributing disc 4210 at equal intervals along the circumferential direction of the oil distribution disc 4210, a plurality of first atomizer 4212 are uniformly distributed on the bottom of each oil distribution pipe 4211 along the length direction of the oil distribution pipe, a first atomizer 4212 on the adjacent oil distribution pipes 4211 is arranged in a staggered mode, a first sealing member 429 is arranged between the oil inlet manifold 427 and the side wall of the tower body 41, a first sealing bearing 428 is fixedly arranged in the interior of the oil inlet manifold 427, the bottom end of the 425 is positioned at the lower part of the circulating oil tank 422, the circulating pump 424 is arranged on the circulating pipe 4220, the circulating pipe 4211 is provided with a circulating pump 424, and the circulating pipe 4211 extends to the circulating pipe 428 in the circulating pipe 428.
The sprayed absorbent finally falls to the bottom of the tower body 41 under the gravity factor, enters the circulation oil tank 422 from the first oil drain pipe 421 for circulation, is sent into the oil distribution disc 4210 through the circulation pump 424 by the absorbent in the circulation oil tank 422, enters the oil distribution pipes 4211 respectively, and is sprayed out through the first atomization spray heads 4212 respectively. The spraying area is increased through the arrangement of the first atomizing nozzles 4212, and the first atomizing nozzles 4212 arranged in a staggered mode are combined, so that the absorbent is sprayed more comprehensively. Under the premise of the first atomizing nozzle 4212 arranged in a staggered manner, the motor 44 drives the oil inlet manifold 427 to rotate through the transmission assembly 45, so that the oil distribution disc 4210 rotates, and drives each oil distribution pipe 4211 and the upper nozzle thereof to rotate in the spraying process, so that the exchange of the positions and the exchange of the heights of the first atomizing nozzle 4212 are realized, the absorbent can be sprayed on the filler 46 comprehensively and uniformly, and the absorbent is not concentrated at a certain position of the filler 46 to influence the mass transfer effect. The absorbent in the circulation tank 422 is fed into the oil boiler 9 through the second oil discharge pipe 423 after being absorbed and balanced. The provision of the first seal bearing 428 fixedly disposed within the oil feed manifold 427 enables rotational operation of the oil feed manifold 427 while feeding oil.
The air distribution system 43 comprises an air inlet manifold 431, an air distribution disc 432, air distribution rods 433, second atomizing nozzles 434, second bearings 435, second sealing bearings 436 and second sealing members 437, the center position of the bottom of the tower body 41 is fixed with the second bearings 435, the top end of the air inlet manifold 431 passes through the second bearings 435 and the bottom wall of the tower body 41, and extends to the lower part in the tower body 41 to be fixedly communicated with the air distribution disc 432, the air distribution disc 432 is fixedly communicated with a plurality of air distribution rods 433 at equal intervals along the circumferential direction, the top of each air distribution rod 433 is fixedly communicated with a plurality of second atomizing nozzles 434 at equal intervals along the length direction, the second sealing bearings 436 are fixed in the air inlet manifold 431, and the exhaust pipe of the bag-type dust remover 3 extends into the air inlet manifold 431 and passes through the second sealing bearings 436.
The motor 44 drives the air inlet manifold 431 to rotate through the transmission assembly 45, so that the air distribution disc 432 rotates, the air distribution rod 433 and the second atomizing nozzle 434 thereon are driven to rotate, and the second atomizing nozzle 434 rotates while atomizing and spraying waste gas, so that the waste gas is distributed more uniformly and comprehensively, and the absorbent which is uniformly and comprehensively combined is fully contacted in the filler 46, thereby realizing efficient mass transfer. The provision of the second seal bearing 436 fixedly provided in the intake manifold 431 enables the intake manifold 431 to perform rotational operation while intake air.
The transmission assembly 45 includes a first shaft 451, a first pulley 452, a first flat belt 453, a second pulley 454, a first bevel gear 455, a second bevel gear 456, a second shaft 457, a third bearing 458, a third pulley 459, a second flat belt 4510, and a fourth pulley 4511, the bottom of the motor 44 is fixed with the first shaft 451, the middle part of the first shaft 451 is fixed with the first pulley 452, the lower part of the intake manifold 431 is fixed with the second pulley 454, the first pulley 452 is in transmission connection with the second pulley 454 through the first flat belt 453, the bottom of the first shaft 451 is fixed with the first bevel gear 455, the bottom of the tower 41 is fixed with the third bearing 458, the left end of the second shaft 457 passes through the third bearing 458 and is fixed with the second bevel gear 456, the second bevel gear 456 is meshed with the first bevel gear 455, the right end of the second shaft 457 is fixed with the third pulley 459, the right part of the intake manifold 427 is fixed with the fourth pulley 4511, and the third pulley 459 is in transmission connection with the fourth pulley 4511 through the second flat belt 4510.
The motor 44 drives the first rotating shaft 451 to rotate, drives the first belt pulley 452 to rotate, and drives the second belt pulley 454 to rotate through the first flat belt 453, so that the air inlet manifold 431 rotates; the first rotating shaft 451 rotates and drives the first bevel gear 455 to rotate, so that the second bevel gear 456 rotates, the second rotating shaft 457 rotates and drives the third belt pulley 459 to rotate, and the fourth belt pulley 4511 rotates and drives the oil inlet manifold 427 to rotate through the second flat belt 4510. In this way, by the design of the transmission assembly 45, a driving source (the motor 44) can drive the first atomizer 4212 and the second atomizer 434 to rotate respectively, and the rotation modes are different, so that the design is ingenious, and the energy consumption and the manufacturing cost are reduced.
Wherein the side wall of the tower 41 is provided with a sealing door 413. The sealing door 413 is opened to realize the adjustment operation of the position of the frame body 47 and the replacement of the filler 46, and the filler 46 with saturated adsorption is taken out and sent to the solid waste incinerator 7 for regeneration and then put back into the frame body 47 for reuse, so that the cost is reduced.
Wherein, tower 41 internal fixation has wire mesh defroster 412, and wire mesh defroster 412 is located the top of the spray end of circulation spray system. Entrained moisture is removed by a wire mist eliminator 412.
The embodiment also provides a treatment method of tar-containing waste gas, which adopts the treatment equipment of tar-containing waste gas for treatment, and comprises the following steps:
the method comprises the steps of feeding tar-containing waste gas into a venturi tube 1 from an air inlet of the venturi tube 1, feeding active carbon powder into a throat of the venturi tube 1 from an active carbon powder storage tank 8, enabling the active carbon powder to be in rapid contact with the tar-containing waste gas at the throat, enabling tar to be attached to the surface of the active carbon powder, enabling the waste gas and the active carbon powder to enter a cyclone dust collector 2 for treatment, separating the active carbon powder from the waste gas, enabling the separated active carbon powder to enter the active carbon storage tank for recycling, enabling the active carbon powder to enter a solid waste incinerator 7 for recycling after recycling for a plurality of times, enabling the recycled active carbon powder to be returned to the active carbon powder storage tank 8, enabling the waste gas after being treated by the cyclone dust collector 2 to enter the bag dust collector 3 to remove particles in the waste gas, enabling the waste gas after being treated by the bag dust collector 3 to enter an oil washing tower 4, enabling the liquid-gas ratio to be 2.5-5:1, enabling tar, aromatic hydrocarbon pollutants and volatile organic matters in the waste gas to be removed, enabling an absorbent to be absorbed and balanced to be fed into the oil boiler 9 as fuel, enabling the absorbent 46 to be absorbed and saturated filler 46 to be fed into the solid waste incinerator 7 for recycling treatment, recycling the waste gas, and recycling the waste gas after recycling treatment. The waste gas treated by the oil scrubber 4 is sent to an incinerator 5, organic matters remained in the waste gas react with oxygen, and purified gas after generating carbon dioxide and water is discharged from a chimney 6.
The invention can effectively reduce the odor concentration through the active carbon adsorption, oil washing and incineration processes, reduce the influence on the environment and surrounding residents and reduce secondary pollution.
Embodiment two:
as shown in fig. 10, the present embodiment differs from the first embodiment in that:
the upper and lower frames 47 are stacked on each other, and the same packing 46 is filled in the two frames 47. Thus, by adjusting the distance between the two frames 47, the two frames 47 can be stacked and combined to form a packing layer, and the height of the whole packing layer is changed to adapt to different operation demands.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A treatment device for tar-containing waste gas, which is characterized in that:
comprises a Venturi tube, a cyclone dust collector, a bag-type dust collector, an oil scrubber, an incinerator and a chimney which are sequentially arranged along the exhaust gas conveying direction;
the air inlet of the venturi tube is communicated with a tar-containing waste gas pipeline, and the air outlet of the venturi tube is communicated with the air inlet of the cyclone dust collector;
the air outlet of the cyclone dust collector is communicated with the air inlet of the bag dust collector, the discharge port of the cyclone dust collector is respectively communicated with a solid waste incinerator and an active carbon powder storage tank, the first discharge port of the solid waste incinerator is communicated with the active carbon powder storage tank, active carbon powder is arranged in the active carbon powder storage tank, and the discharge port of the active carbon powder storage tank is communicated to the venturi tube so that tar-containing waste gas contacts with the active carbon powder at the venturi tube;
the oil washing tower is provided with a circulating oil tank, and a liquid outlet of the circulating oil tank is communicated with an oil-fired boiler.
2. The tar-containing waste gas treatment device according to claim 1, characterized in that:
the oil washing tower comprises a tower body, a circulating spray system, a gas distribution system, a motor, a transmission assembly, a filler, a frame body, a screen plate, a spring and clamping beads;
the spraying end of the circulating spraying system is positioned above the inside of the tower body, and the gas distribution end of the gas distribution system is positioned below the inside of the tower body;
two frames are arranged in the tower body between the spraying end of the circulating spraying system and the gas distribution end of the gas distribution system, and are distributed up and down, and the two frames are respectively filled with the same or different fillers;
the bottom of each frame body is provided with a screen plate, the side wall of each frame body is provided with a plurality of accommodating grooves, springs are fixed in each accommodating groove, each spring is connected with a clamping bead, the clamping beads are in sliding fit with the accommodating grooves, and a plurality of clamping grooves which are clamped with the clamping beads are distributed on the inner wall of the tower body at intervals along the height direction;
the motor is fixed at the bottom of the tower body, and the motor drives the transmission assembly to drive the spraying end of the circulating spraying system and the gas distribution end of the gas distribution system to rotate respectively.
3. The tar-containing waste gas treatment device according to claim 2, characterized in that:
the frame body is internally provided with a containing cavity, the containing cavity is provided with a first containing section and a second containing section, the first containing section is positioned below the second containing section, the longitudinal section of the first containing section is in an inverted trapezoid shape, and the longitudinal section of the second containing section is rectangular.
4. The tar-containing waste gas treatment device according to claim 2, characterized in that:
the accommodating grooves are distributed at equal intervals along the circumferential direction of the frame body.
5. The tar-containing waste gas treatment device according to claim 2, characterized in that:
the fillers in the two frames adopt fillers with the same or different specific surface areas, porosities and corrosion resistance.
6. The tar-containing waste gas treatment device according to claim 2, characterized in that:
the circulating spraying system comprises a first oil discharge pipe, a circulating oil tank, a second oil discharge pipe, a circulating pump, a circulating pipe, a first bearing seat, an oil inlet main pipe, a first sealing bearing, a first sealing piece, an oil distribution disc, an oil distribution pipe and a first atomization nozzle;
the lower part of the tower body is fixedly communicated with a first oil drain pipe, the first oil drain pipe is communicated with the circulating oil tank, washing oil is arranged in the circulating oil tank, the lower part of the circulating oil tank is fixedly communicated with a second oil drain pipe, and a liquid outlet of the second oil drain pipe is communicated with an oil inlet of the oil-fired boiler;
the oil distribution device comprises a tower body, wherein a first bearing seat is fixed on the outer side wall of the upper part of the tower body, the left end of an oil inlet main pipe penetrates through the first bearing seat and the side wall of the tower body and extends into the tower body to be fixedly communicated with an oil distribution disc, a plurality of oil distribution pipes are fixedly communicated with the left side of the oil distribution disc at equal intervals along the circumferential direction of the oil distribution disc, a plurality of first atomizing nozzles are uniformly distributed at equal intervals on the bottom of each oil distribution pipe along the length direction of the oil distribution pipe, the first atomizing nozzles on the adjacent oil distribution pipes are arranged in a staggered mode, a first sealing piece is arranged between the oil inlet main pipe and the side wall of the tower body, and a first sealing bearing is fixedly arranged in the oil inlet main pipe;
the bottom end of the circulating pipe is positioned at the lower part in the circulating oil tank, a circulating pump is arranged on the circulating pipe, and the left end of the circulating pipe extends into the oil inlet main pipe and penetrates through the first sealing bearing.
7. The tar-containing waste gas treatment device according to claim 6, wherein:
the gas distribution system comprises a gas inlet main pipe, a gas distribution disc, a gas distribution rod, a second atomizing nozzle, a second bearing seat, a second sealing bearing and a second sealing piece;
the central position of the bottom of the tower body is fixedly provided with a second bearing, the top end of the air inlet main pipe penetrates through the second bearing and the bottom wall of the tower body, and extends to the lower part in the tower body to be fixedly communicated with an air distribution disc, a plurality of air distribution rods are fixedly communicated with the air distribution disc at equal intervals along the circumferential direction of the air distribution disc, and the top of each air distribution rod is fixedly communicated with a plurality of second atomizing spray heads at equal intervals along the length direction of the air distribution rod;
the second sealing bearing is fixed in the air inlet main pipe, and the exhaust pipe of the bag-type dust collector extends into the air inlet main pipe and penetrates through the second sealing bearing.
8. The tar-containing waste gas treatment device according to claim 7, characterized in that:
the transmission assembly comprises a first rotating shaft, a first belt pulley, a first flat belt, a second belt pulley, a first bevel gear, a second rotating shaft, a third bearing seat, a third belt pulley, a second flat belt and a fourth belt pulley;
the bottom of the motor is fixed with a first rotating shaft, the middle part of the first rotating shaft is fixed with a first belt pulley, the lower part of the air inlet manifold is fixed with a second belt pulley, the first belt pulley is in transmission connection with the second belt pulley through a first flat belt, and the bottom end of the first rotating shaft is fixed with a first bevel gear;
the bottom of the tower body is fixed with a third bearing seat, the left end of the second rotating shaft penetrates through the third bearing seat and is fixed with a second bevel gear, the second bevel gear is meshed with the first bevel gear, the right end of the second rotating shaft is fixed with a third belt pulley, the right part of the oil inlet main pipe is fixed with a fourth belt pulley, and the third belt pulley and the fourth belt pulley are in transmission connection through a second flat belt.
9. The tar-containing waste gas treatment device according to claim 2, characterized in that:
the side wall of the tower body is provided with a sealing door;
a wire mesh demister is fixed in the tower body and is positioned above the spraying end of the circulating spraying system.
10. A method for treating tar-containing waste gas, characterized by using the tar-containing waste gas treatment device according to any one of claims 1 to 9, comprising the steps of:
the method comprises the steps of feeding tar-containing waste gas into a venturi tube from an air inlet of the venturi tube, feeding active carbon powder into a throat of the venturi tube from an active carbon powder storage tank, enabling the active carbon powder to be in quick contact with the tar-containing waste gas at the throat, enabling tar to adhere to the surface of the active carbon powder, enabling the waste gas and the active carbon powder to enter a cyclone dust collector for treatment, separating the active carbon powder from the waste gas, enabling the separated active carbon powder to enter the active carbon storage tank for recycling, enabling the active carbon powder to enter a solid waste incinerator for recycling after recycling for multiple times, enabling the active carbon powder after recycling to be returned to the active carbon powder storage tank, enabling the waste gas after the recycling to enter a bag dust collector for removing particles in the waste gas after the cyclone dust collector, enabling the waste gas after the waste gas is processed through the bag dust collector to enter an oil scrubber, enabling the liquid-gas ratio to be 2.5-5:1, removing tar, aromatic hydrocarbon pollutants and volatile organic matters in the waste gas, enabling an absorbent to be absorbed and balanced to be fed into a fuel boiler, enabling the waste gas after the oil scrubber to be processed, enabling the residual organic matters in the waste gas to react with oxygen, and enabling the waste gas to be discharged through a chimney.
CN202310889305.1A 2023-07-19 2023-07-19 Treatment equipment and method for tar-containing waste gas Pending CN117101342A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310889305.1A CN117101342A (en) 2023-07-19 2023-07-19 Treatment equipment and method for tar-containing waste gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310889305.1A CN117101342A (en) 2023-07-19 2023-07-19 Treatment equipment and method for tar-containing waste gas

Publications (1)

Publication Number Publication Date
CN117101342A true CN117101342A (en) 2023-11-24

Family

ID=88808216

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310889305.1A Pending CN117101342A (en) 2023-07-19 2023-07-19 Treatment equipment and method for tar-containing waste gas

Country Status (1)

Country Link
CN (1) CN117101342A (en)

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