CN217092823U - Active dynamic membrane VOCs exhaust-gas treatment system - Google Patents
Active dynamic membrane VOCs exhaust-gas treatment system Download PDFInfo
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- CN217092823U CN217092823U CN202220654816.6U CN202220654816U CN217092823U CN 217092823 U CN217092823 U CN 217092823U CN 202220654816 U CN202220654816 U CN 202220654816U CN 217092823 U CN217092823 U CN 217092823U
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Abstract
The utility model relates to a VOCs waste gas treatment technical field discloses an active dynamic membrane VOCs waste gas treatment system, including active circulation liquid transfer tank, active dynamic membrane generator and active agent recoverer, the bottom fixedly connected with connecting pipe at the top of active dynamic membrane generator, the right-hand member fixed connection of connecting pipe is in the connecting port of active agent recoverer left side bottom, the top fixed connection of active agent recoverer is in the bottom of clarifier chimney, the inside of active agent recoverer has set gradually first packing layer, second packing layer and third packing layer from last to down. The utility model discloses in, active circulation liquid distributor and active circulation liquid spray set that spray piping formed adopt the mode that first packing layer, second packing layer and third packing layer set up with circulation liquid spray set interval to realize the absorption of small water droplet and the effective recovery of active medicament on the one hand, and on the other hand improves the efficiency of getting rid of VOCs in the waste gas.
Description
Technical Field
The utility model relates to a VOCs exhaust-gas treatment technical field especially relates to an active dynamic membrane VOCs exhaust-gas treatment system.
Background
Volatile Organic Compounds (VOCs) generally refer to various organic compounds with a boiling point below 260 ℃ at normal temperature, mainly comprise alkanes, aromatics, olefins, halogenated hydrocarbons, esters, aldehydes, ketones and other organic compounds, a large number of VOCs are usually present in production workshops such as paint production, automobile painting, organic synthesis and the like, most of the Volatile Organic Compounds (VOCs) are substances harmful to human bodies, some of the volatile organic compounds also have carcinogenicity, typically include polycyclic aromatic hydrocarbons, nitrosamines and the like, some of the volatile organic compounds have carcinogenicity inducing substances such as halogenated hydrocarbons, aromatic amines and the like, and the Volatile Organic Compounds (VOCs) are one of main factors for environmental atmosphere and indoor air pollution, so that the treatment of the VOCs is a necessary choice for protecting the environment.
The conventional method for treating VOCs comprises catalytic combustion, an adsorption method and the like, wherein a catalyst in the catalytic combustion method is high in cost, can not be sustained, and is suitable for treating VOCs waste gas with small flow, a common adsorbent in the adsorption method is a solid adsorbent and water solution adsorption, the adsorption amount of the solid adsorbent is small, the solid adsorbent needs to be frequently replaced in large-flow industrial waste gas treatment, the cost is high, and the water solution is commonly used for adsorption at present. However, since the VOCs are usually organic substances and are usually insoluble in aqueous solutions, mass transfer between gas and aqueous solutions is hindered, and thus, problems of small adsorption capacity, low adsorption efficiency and even substandard discharge occur in aqueous solution adsorption.
In order to solve the technical problem, the subject group develops and designs an active dynamic membrane generator, the active dynamic membrane generator is a Venturi type gas-liquid mixer, a gas-liquid multiphase vortex generator is arranged at the throat pipe of the Venturi type gas-liquid mixer and comprises a long handle and an umbrella cap, one end of the long handle is fixedly connected with the umbrella cap, the other end of the long handle is fixedly connected on the inner wall of the throat pipe, the multiphase vortex generator is favorable for cutting gas, meanwhile, a vortex is formed in the downstream direction of the generator, the mutual shearing of gas and liquid is strengthened, and the generation of an active dynamic membrane is promoted. The active dynamic film, namely the water solution is atomized into fine water drops, the active medicament in the water solution is dispersed on the surfaces of the water drops, and the surfaces of the water drops have higher surface tension, so that the active medicament is promoted to be uniformly dispersed on the surfaces of the water drops, and the active dynamic film is formed; the active dynamic membrane promotes VOCs to be rapidly dissolved in the active agent on the surface of the water drop and further adsorbed by the aqueous solution, so that the aim of efficiently removing the VOCs is fulfilled; the waste gas containing VOCs can reach the emission standard after being adsorbed and purified by an active dynamic membrane. The kinetic energy introduced by the waste gas promotes the aqueous solution with the active medicament to form micro liquid drops, namely an active dynamic membrane is formed, and gas-liquid mass transfer is promoted, so that the removal efficiency of VOC is improved, but the micro liquid drops generated by the active dynamic membrane generator are easy to be taken away along with the gas flow, on one hand, the loss of the active medicament is caused, and the treatment cost is increased; on the other hand, the tiny droplets carrying the active agent are discharged into the air, causing air pollution. In industrial production, adsorption treatment is usually performed on the tiny droplets by using industrial drying agents or fixed fillers, but the adsorption treatment also causes the loss of active pharmaceutical agents. On the other hand, the removal efficiency of the VOCs in the waste gas cannot be improved, so that the operation efficiency of the system is reduced, and on the other hand, the waste gas generated in the active dynamic membrane VOCs waste gas treatment system cannot be treated, so that the waste gas pollutes the environment and harms the human body, and the cyclic recycling can not be realized, so that the operation cost of waste gas treatment is improved. In order to solve the problems of the prior art, the invention provides an active dynamic membrane VOC treatment system and process.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing an active dynamic membrane VOCs waste gas treatment system.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an active dynamic membrane VOCs waste gas treatment system comprises an active circulation liquid transfer tank, an active dynamic membrane generator and an active agent recoverer, wherein the bottom of the top of the active dynamic membrane generator is fixedly connected with a connecting pipe, the right end of the connecting pipe is fixedly connected in a connecting port at the bottom end of the left side of the active agent recoverer, the top of the active agent recoverer is fixedly connected at the bottom of a purifier emission cylinder, a first packing layer, a second packing layer and a third packing layer are sequentially arranged in the active agent recoverer from top to bottom, active circulation liquid spray pipelines are respectively arranged on the upper sides of the second packing layer and the third packing layer, a plurality of active circulation liquid distributors are fixedly connected at the bottom of the active circulation liquid spray pipelines, the active circulation liquid transfer tank is arranged at the bottom of the active agent recoverer, and a lifting pump is fixedly connected on the right side of the top of the active circulation liquid transfer tank, the right side liquid outlet fixed connection of elevator pump is in the one end of conveyer pipe, the left side bottom fixedly connected with drain pipe of active cycle liquid transfer tank, the left end fixed connection of drain pipe is in the inlet port of active cycle liquid booster pump, the liquid outlet fixed connection of active cycle liquid booster pump is in the one end of active cycle liquid pipeline.
As a further description of the above technical solution: the equal fixedly connected with gas-liquid distributor in bottom of first packing layer, second packing layer and third packing layer, gas-liquid distributor is the mesh screen form.
As a further description of the above technical solution: the right ends of the active circulation liquid pipelines are fixedly connected to the left side of the conveying pipe.
As a further description of the above technical solution: the device is characterized in that a clear water replenishing port is arranged behind the upper end of the right side of the active circulation liquid transfer tank, an active circulation liquid discharging port is arranged in front of the lower end of the right side of the active circulation liquid transfer tank, and connecting flange plates are fixedly connected to the outer diameters of the right ends of the active circulation liquid discharging port and the clear water replenishing port.
As a further description of the above technical solution: the top of a purifier discharge barrel is provided with a rain-proof cap.
As a further description of the above technical solution: the front side of the active agent recoverer is provided with a plurality of manholes.
As a further description of the above technical solution: the other end of the active circulating liquid pipeline is fixedly connected with a liquid inlet at the top end of the left side of the active dynamic membrane generator.
As a further description of the above technical solution: the active circulation liquid spraying pipeline is set to be a net-shaped circulation liquid pipeline, and the active circulation liquid distributor can be selected from one of an atomizing nozzle, a spiral nozzle, a fan-shaped nozzle and a multi-layer perforated pipe.
As a further description of the above technical solution: the lower end of the active agent recoverer is connected with the top of the active circulating liquid transfer tank in a water seal mode of an active aqueous solution.
As a further description of the above technical solution: the active circulating liquid distributor and the active circulating liquid spraying pipeline form a circulating liquid spraying device, and the spraying method of the circulating liquid spraying device is a large-flow spraying mode.
The utility model discloses following beneficial effect has:
1. in the utility model, firstly, the active circulating liquid distributor and the circulating liquid spraying device formed by the active circulating liquid spraying pipeline are adopted, the spraying method of the circulating liquid spraying device is a large-flow spraying mode which can more effectively recover the active substances in the tiny liquid drops and recover the active substances absorbed by the packing layer, the first packing layer, the second packing layer and the third packing layer are arranged at intervals with the circulating liquid spraying device in the active agent recoverer, on one hand, the adsorption of the tiny liquid drops and the effective recovery of active agents are realized, on the other hand, the removal efficiency of VOCs in the waste gas can be improved, the operating efficiency of the system is greatly improved, the active circulating liquid in the rotary groove in the active circulating liquid is conveyed to the active circulating liquid distributor and the active circulating liquid spraying pipeline for spraying by the active agent recovery lifting pump, the recovery of the tiny liquid drops in the waste gas treated by the active membrane generator is realized, and a washing action on the second packing layer and the third packing layer.
2. The utility model discloses in, can realize the exhaust-gas treatment of active circulation solution through active circulation liquid transfer groove, the recovery of active medicament, the advanced treatment of waste gas, and through the drain pipe, the cooperation of active circulation liquid booster pump and active circulation liquid pipeline is used, and the activator retrieves the elevator pump, the conveyer pipe, the circulation that active circulation liquid sprayed pipeline and active circulation liquid distributor uses the circulation that has realized the circulating liquid is used and is handled, the stability of circulating liquid system has been kept, greatly reduced exhaust-gas treatment's running cost, carry active dynamic membrane generator through the active circulation liquid of active circulation liquid booster pump with active circulation liquid transfer inslot, active circulation liquid and waste gas get into active dynamic membrane generator and form tiny water droplet, form active dynamic membrane, promote the mass transfer of VOCs in active circulation liquid.
Drawings
Fig. 1 is a schematic structural diagram of an active dynamic membrane VOCs waste gas treatment system according to the present invention;
fig. 2 is a top view of an active dynamic membrane VOCs waste gas treatment system according to the present invention;
fig. 3 is a layout diagram of an active circulating liquid distributor of an active dynamic membrane VOCs waste gas treatment system according to the present invention;
fig. 4 is a schematic view of an active circulating liquid distributor of an active dynamic membrane VOCs waste gas treatment system according to the present invention;
fig. 5 is a top view of an active circulating liquid distributor of an active dynamic membrane VOCs waste gas treatment system according to the present invention;
fig. 6 is a schematic view of an airflow distributor of an active dynamic membrane VOCs waste gas treatment system according to the present invention.
Illustration of the drawings:
1. an active circulation liquid transfer tank; 2. an active dynamic membrane generator; 3. an active agent recoverer; 4. an active circulating liquid booster pump; 5. an active circulation liquid discharge port; 6. a clear water replenishing port; 7. A lift pump; 8. a connecting port; 9. a manhole; 10. a first filler layer; 11. a gas-liquid distributor; 12. an active circulating liquid distributor; 13. a purifier discharge canister; 14. rain-proof caps; 15. an active circulating liquid spray pipeline; 16. an active circulation fluid conduit; 17. a liquid outlet pipe; 18. a delivery pipe; 19. a second packing layer; 20. a third packing layer; 21. and (4) connecting the pipes.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-6, the present invention provides an embodiment: an active dynamic membrane VOCs waste gas treatment system comprises an active circulating liquid transfer tank 1, an active dynamic membrane generator 2 and an active agent recoverer 3, wherein the bottom of the top of the active dynamic membrane generator 2 is fixedly connected with a connecting pipe 21, the right end of the connecting pipe 21 is fixedly connected in a connecting port 8 at the bottom end of the left side of the active agent recoverer 3, the top of the active agent recoverer 3 is fixedly connected at the bottom of a purifier discharge cylinder 13, a first packing layer 10, a second packing layer 19 and a third packing layer 20 are sequentially arranged in the active agent recoverer 3 from top to bottom, active circulating liquid spraying pipelines 15 are respectively arranged on the upper sides of the second packing layer 19 and the third packing layer 20, a plurality of active circulating liquid distributors 12 are fixedly connected at the bottom of the active circulating liquid spraying pipelines 15, an active circulating liquid transfer tank 1 is arranged at the bottom of the active agent recoverer 3, and an active agent recovery lifting pump 7 is fixedly connected on the right side of the top of the active circulating liquid transfer tank 1, the right side liquid outlet of the active agent recovery lift pump 7 is fixedly connected with one end of a conveying pipe 18, the left side bottom end of the active circulation liquid transfer tank 1 is fixedly connected with a liquid outlet pipe 17, the left end of the liquid outlet pipe 17 is fixedly connected in a liquid inlet of the active circulation liquid booster pump 4, a liquid outlet of the active circulation liquid booster pump 4 is fixedly connected with one end of an active circulation liquid pipeline 16, a circulation liquid spraying device formed by an active circulation liquid distributor 12 and an active circulation liquid spraying pipeline 15 is adopted as a spraying method of the circulation liquid spraying device, active substances in tiny liquid drops can be recovered more effectively in a large-flow spraying mode, active substances adsorbed by the packing layers are recovered, a first packing layer 10, a second packing layer 19 and a third packing layer 20 are arranged in the active agent recoverer 3 at intervals, on one hand, the adsorption of tiny liquid drops and the effective recovery of active agents are realized, on the other hand, the removal efficiency of VOCs in the waste gas can be improved, the operation efficiency of the system is greatly improved, the active circulation liquid in the active circulation liquid transfer tank 1 is conveyed to the active circulation liquid distributor 12 and the active circulation liquid spray pipeline 15 for spraying through the active agent recovery lift pump 7, the recovery of tiny water drops in the waste gas treated by the active dynamic membrane generator 2 is realized, the washing effect on the second packing layer 19 and the third packing layer 20 is realized, the waste gas treatment of the active circulation liquid, the recovery of active agents and the deep treatment of the waste gas can be realized through the active circulation liquid transfer tank 1, the matched use of the liquid outlet pipe 17, the active circulation liquid booster pump 4 and the active circulation liquid pipeline 16 and the matched use of the active agent recovery lift pump 7, the conveying pipe 18, the active circulation liquid spray pipeline 15 and the active circulation liquid distributor 12 realize the cyclic use treatment of the circulation liquid, the stability of a circulating liquid system is kept, the operation cost of waste gas treatment is greatly reduced, the active circulating liquid in the active circulating liquid transfer tank 1 is conveyed into the active dynamic membrane generator 2 through the active circulating liquid booster pump 4, the active circulating liquid and the waste gas enter the active dynamic membrane generator 2 to form tiny water drops to form an active dynamic membrane, and the mass transfer of VOCs in the active circulating liquid is promoted.
The bottoms of the first packing layer 10, the second packing layer 19 and the third packing layer 20 are fixedly connected with a gas-liquid distributor 11, the gas-liquid distributor 11 is in a mesh shape and is convenient for gas and liquid to pass through, the right end of an active circulating liquid spraying pipeline 15 is fixedly connected to the left side of a conveying pipe 18 and is convenient for conveying active circulating liquid, a clear water replenishing port 6 is arranged behind the upper end of the right side of an active circulating liquid transfer tank 1 and is convenient for replenishing clear water through the clear water replenishing port 6 when the water level of the active circulating liquid transfer tank 1 is insufficient, an active circulating liquid discharging port 5 is arranged in front of the lower end of the right side of the active circulating liquid transfer tank 1, the active circulating liquid is discharged from the active circulating liquid discharging port 5 when the active circulating liquid is saturated in adsorption or waste gas treatment cannot reach the discharging standard, the next treatment process is convenient, and connecting flange plates are fixedly connected on the outer diameters of the active circulating liquid discharging port 5 and the clear water replenishing port 6, the active circulation liquid spray pipeline 15 is a netted circulation liquid pipeline, the active circulation liquid distributor 12 can be selected from one of an atomizing nozzle, a spiral nozzle, a fan-shaped nozzle and a multilayer perforated pipe, the washing effect is improved, the lower end of the active circulation liquid distributor 3 is connected with the top of the active circulation liquid transfer tank 1 in an active circulation liquid water seal mode, waste gas leakage is avoided, the sealing performance is improved, the active circulation liquid distributor 12 and the active circulation liquid spray pipeline 15 form a circulation liquid spray device, and the spraying method of the circulating liquid spraying device is a high-flow spraying mode, so that the active substances in the tiny liquid drops and the active substances adsorbed by the filler layer can be more effectively recovered.
The working principle is as follows: waste gas enters from the upper end of an active dynamic membrane generator 2, tiny water drops, namely an active dynamic membrane, are formed in the active dynamic membrane generator 2, rapid mass transfer of VOCs in the waste gas in circulating liquid is realized, air flow with the tiny water drops enters an active agent recoverer 3 through a connecting pipe 21 at the lower end of the active dynamic membrane generator 2, the air flow is sequentially absorbed by a third packing layer 20, a circulating liquid spraying device formed by an active circulating liquid distributor 12 and an active circulating liquid spraying pipeline 15 is sprayed and recovered, the air flow is absorbed by a second packing layer 19, the circulating liquid spraying device is sprayed and recovered, the absorbed by the first packing layer 10 and then discharged to the air through a purifier discharge barrel 13, one part of the tiny water drops is absorbed by the first packing layer 10, the second packing layer 19 and the third packing layer 20, and the other part of the tiny water drops is sprayed and recovered by the circulating liquid spraying device formed by the active circulating liquid distributor 12 and the active circulating liquid spraying pipeline 15, the active circulation liquid that spray set sprayed can realize retrieving third packing layer 20, the active agent that adsorbs the accumulation of small water droplet in the second packing layer 19, guarantee the stability of active circulation liquid system effectively, spray set spun active circulation liquid can also carry out purification treatment to remaining VOCs in the air current, second packing layer 19 and third packing layer 20 that adsorb active medicament also can realize carrying out effectual purification to remaining VOCs in the air current, and then further improve VOCs's in the waste gas efficiency of getting rid of.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (10)
1. The utility model provides an active dynamic membrane VOCs exhaust-gas treatment system, includes active circulation liquid transfer tank (1), active dynamic membrane generator (2) and active agent recoverer (3), its characterized in that: the bottom of the active dynamic membrane generator (2) is fixedly connected with a connecting pipe (21), the right end of the connecting pipe (21) is fixedly connected with a connecting port (8) at the bottom end of the left side of the active agent recoverer (3), the top of the active agent recoverer (3) is fixedly connected with the bottom of a purifier discharge barrel (13), a first packing layer (10), a second packing layer (19) and a third packing layer (20) are sequentially arranged in the active agent recoverer (3) from top to bottom, active circulation liquid spray devices are respectively arranged on the upper sides of the second packing layer (19) and the third packing layer (20), each active circulation liquid spray device comprises an active circulation liquid spray pipeline (15) and a plurality of active circulation liquid distributors (12) fixedly connected on the active circulation liquid spray pipeline (15), an active circulation liquid transfer groove (1) is arranged at the bottom of the active agent recoverer (3), the active circulating liquid transfer tank is characterized in that the right side of the top of the active circulating liquid transfer tank (1) is connected with a lift pump (7), the lift pump (7) is connected with an active circulating liquid spraying pipeline (15) through a conveying pipe (18), the bottom end of the left side of the active circulating liquid transfer tank (1) is fixedly connected with a liquid outlet pipe (17), the left end of the liquid outlet pipe (17) is fixedly connected with a liquid inlet of an active circulating liquid booster pump (4), a liquid outlet of the active circulating liquid booster pump (4) is fixedly connected with an active circulating liquid pipeline (16), and the other end of the active circulating liquid pipeline (16) is connected with a water inlet of an active dynamic membrane generator; the lift pump (7) conveys the active circulating liquid in the active circulating liquid transfer tank to an active circulating liquid spraying device for spraying, so that the recovery and washing of tiny water drops in the waste gas treated by the second packing layer (19) and the third packing layer (20) are realized; the active circulating liquid booster pump (4) conveys the active circulating liquid in the active circulating liquid transfer tank to the active dynamic membrane generator, and the active circulating liquid and the waste gas enter the active dynamic membrane generator to form tiny water drops to form an active dynamic membrane, so that the mass transfer of the VOC in the active circulating liquid is promoted.
2. An active dynamic membrane VOCs exhaust treatment system as claimed in claim 1, wherein: the bottom of first packing layer (10), second packing layer (19) and third packing layer (20) is equal fixedly connected with gas-liquid distributor (11), gas-liquid distributor (11) are the mesh screen form.
3. An active dynamic membrane VOCs exhaust treatment system as claimed in claim 1, wherein: a clear water replenishing port (6) is formed in the rear portion of the upper end of the right side of the active circulating liquid transfer tank (1), and an active circulating liquid discharging port (5) is formed in the front portion of the lower end of the right side of the active circulating liquid transfer tank (1).
4. An active dynamic membrane VOCs exhaust treatment system as claimed in claim 3, wherein: and the outer diameters of the right ends of the active circulation liquid discharge port (5) and the clear water replenishing port (6) are fixedly connected with connecting flange plates.
5. An active dynamic membrane VOCs exhaust treatment system as claimed in claim 1, wherein: the top of the purifier discharge barrel (13) is provided with a rain-proof cap (14).
6. An active dynamic membrane VOCs exhaust treatment system as claimed in claim 1, wherein: and the active agent recoverer (3) is provided with a manhole (9) on the side wall between the filler layers, and the manhole is convenient for personnel to perform daily maintenance and overhaul on the active agent.
7. An active dynamic membrane VOCs exhaust treatment system as claimed in any one of claims 1 to 6, wherein: the active circulation liquid spraying pipeline (15) is a net-shaped circulation liquid pipeline, and the active circulation liquid distributor (12) can be one of an atomizing nozzle, a spiral nozzle, a fan-shaped nozzle and a multi-layer perforated pipe.
8. An active dynamic membrane VOCs exhaust treatment system as claimed in any one of claims 1 to 6, wherein: the lower end of the active agent recoverer (3) is connected with the top of the active circulating liquid transfer tank (1) in a water seal mode of an active aqueous solution.
9. An active dynamic membrane VOCs exhaust treatment system as claimed in any one of claims 1 to 6, wherein: the active dynamic membrane generator (2) is a Venturi type gas-liquid mixer.
10. An active dynamic membrane VOCs exhaust treatment system as claimed in claim 9, wherein: the venturi department of venturi formula gas-liquid mixer is provided with the heterogeneous vortex generator of gas-liquid, the heterogeneous vortex generator of gas-liquid includes long handle and umbrella hat, the one end fixed connection umbrella hat of long handle, the other end fixed connection of long handle is on the inner wall of venturi.
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