Synthetic leather industrial waste gas treatment device

Abstract

The application discloses a synthetic leather industrial waste gas treatment device and relates to the technical field of synthetic leather industrial waste gas treatment.The synthetic leather industrial waste gas treatment device comprises an industrial waste gas supply pipeline system, two waste gas washing systems which are arranged in parallel and connected with a gas outlet end of the industrial waste gas supply pipeline system, a first treatment system and a second treatment system which are connected with a gas outlet end of the waste gas washing system; the waste gas washing system is used for washing industrial waste gas flowing through the waste gas washing system, so as to separate volatile organic compounds from the waste gas; the waste gas washing system is arranged at the end of the industrial waste gas supply pipeline system, the volatile organic compounds in the waste gas are absorbed by the waste gas washing system, the sulfides, nitrogen oxides and other difficult gases are separated from the volatile organic compounds, and then the volatile organic compounds are collected and treated by the waste gas washing system and the first treatment system.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of synthetic leather industrial waste gas treatment, in particular to a synthetic leather industrial waste gas treatment device. BACKGROUND

[0002] The main source of waste gas in the production process of synthetic leather is the volatilization of organic solvents, including the volatilization of resins and solvents during batching, transportation and storage; the volatilization of organic matter during coating or impregnation processing; the volatilization of organic matter during oven heating; and the volatilization of organic matter during post-processing. The composition of waste gas generated in the production process of leather factory includes sulfides, nitrogen oxides and volatile organic compounds, among which volatile organic compounds mainly include DMF, toluene, xylene, butanone, etc.

[0003] For example, CN1327936C is a dry method synthetic leather dimethylformamide production waste gas recovery treatment method, which uses a variable frequency energy-saving fan to send dimethylformamide production waste gas into a packed tower composed of at least one stage of countercurrent absorption and at least one stage of mist collection structure. After spraying, packed water absorption and packed mist collection, standard waste gas is discharged from one side of the packed tower, and dimethylformamide aqueous solution is discharged from the other side. The packed tower is composed of two-stage water countercurrent absorption and two-stage mist collection structure. Dimethylformamide waste gas is absorbed by one-stage spraying in the packed tower, the temperature is lowered, and then enters the two-stage water countercurrent absorption. After two-stage packed mist collection, the waste gas meets the emission standard and is discharged. This method cannot separate and collect sulfides, nitrogen oxides and volatile organic compounds for targeted treatment when in use. For example, CN103007682B discloses a coating workshop waste gas treatment method based on a concentration runner and RTO, wherein the concentration runner at least includes an adsorption zone and a high-temperature desorption zone, and includes the following steps: filtering the waste gas discharged from the coating workshop and sending it into the adsorption zone of the concentration runner, so that the VOC components in the waste gas are adsorbed by the adsorbent of the corresponding fan surface; control the continuous rotation of the concentration runner, when the fan surface adsorbed with VOC components rotates to the high-temperature desorption zone, the VOC components are desorbed by the hot air introduced into the high-temperature desorption zone, and are sent to the RTO for incineration and then discharged; this device needs to consume activated carbon and zeolite adsorbents when in use, and the cost of activated carbon and zeolite adsorbents is relatively high. At the same time, the VOC runner adsorption waste gas technology has limited treatment capacity for high-concentration organic waste gas; when the concentration of waste gas is too high, the adsorbent may be saturated, affecting the treatment effect; and high-temperature desorption in the high-temperature desorption zone needs to consume energy to generate high-temperature conditions. SUMMARY

[0004] The synthetic leather industrial waste gas treatment device of the present application is provided with a waste gas washing system at the end of the waste gas supply pipeline system, which can absorb volatile organic compounds in the waste gas, and separate sulfides, nitrogen oxides and other difficult gases from the volatile organic compounds, thereby solving the problems in the prior art.

[0005] To solve the above technical problems, the present application is realized by the following technical scheme:

[0006] The synthetic leather industrial waste gas treatment device of the present application is provided with a waste gas washing system at the end of the waste gas supply pipeline system, which can absorb volatile organic compounds in the waste gas, and separate sulfides, nitrogen oxides and other difficult gases from the volatile organic compounds, thereby solving the problems in the prior art.

[0007] Further, the waste gas washing system comprises a water tank, the bottom of the water tank is connected with an air inlet pipe, an aeration module is installed at the bottom of the water tank and connected with the air inlet pipe, and an air inlet valve A is arranged on the air inlet pipe; an air outlet pipe A and an air outlet pipe B are arranged at the top of the water tank, an air outlet valve A and an air outlet valve B are arranged on the air outlet pipe A and the air outlet pipe B respectively, and the air outlet pipe A and the air outlet pipe B are connected with the first treatment system and the second treatment system respectively; and the water tank is filled with waste gas absorption liquid.

[0008] Further, a telescopic module that can be lifted in the vertical direction is installed at the top of the water tank, the end of the telescopic module is connected with a movable frame in the shape of a Chinese character 'Shi' or 'Mi', a heating pipe in the shape of a snake or a fret is fixed on one side of the movable frame, two hose joints are arranged at the top of the water tank, and the two ends of the heating pipe are connected with the two hose joints through hoses respectively.

[0009] Further, the waste gas supply pipeline system comprises a waste gas supply pipeline, a filter module and a heat exchange and cooling mechanism arranged in sequence along the gas supply direction of the waste gas supply pipeline; the filter module comprises a shell, a plurality of filter assemblies are arranged in the shell, the filter assembly comprises a metal filter screen, and an inclined plate A and an inclined plate B arranged directly below the metal filter screen, a discharge port is arranged on the side wall of the shell above the bottom ends of the inclined plate B and the inclined plate A, and a discharge door is arranged in cooperation with the discharge port, and an air inlet and an air outlet are arranged at the bottom and the top of the shell respectively.

[0010] Further, the heat exchange cooling mechanism is composed of a plurality of pipe heat exchangers connected in series; in use, the synthetic leather industrial waste gas enters the heat medium inlet of the pipe heat exchanger from the waste gas supply pipeline, is discharged from the heat medium outlet and then sent into the waste gas water washing system; at the same time, the cooling gas enters the cold medium inlet of the pipe heat exchanger, is discharged from the cold medium outlet and then sent into the circulating storage tank; further comprising a circulating gas pump, which drives the gas to circulate in the circulating storage tank and the heat exchange cooling mechanism as a power source; a plurality of porous partitions are sequentially arranged in the circulating storage tank from bottom to top, one side of the circulating storage tank is connected with an exhaust joint A and an air inlet joint A, and the exhaust joint A and the air inlet joint A are respectively provided with an exhaust valve I and an air inlet valve B; a gas return port is arranged at the bottom of the circulating storage tank, and a gas outlet port is arranged at the top and connected with the circulating gas pump, and a gas return valve and a gas outlet valve are respectively arranged at the gas return port and the gas outlet port; the exhaust joint A is connected with an air compressor pump, the gas outlet port of the air compressor pump is connected with an air inlet joint B arranged on the high-temperature storage tank, and an air inlet valve C is arranged on the air inlet joint B; an exhaust joint B is arranged on one side wall of the high-temperature storage tank, and the exhaust joint B is connected with one end of the heating pipe, and an exhaust valve C is arranged on the exhaust joint B.

[0011] Further, the other end of the heating pipe is connected with a low-temperature storage tank, and the low-temperature storage tank is connected at the air inlet joint A; a temperature sensor is arranged in the circulating storage tank, the temperature sensor is connected with a controller, and the controller is connected with a telescopic module, an air inlet valve A, an exhaust valve A, an exhaust valve B, an exhaust valve I, an air inlet valve B, a gas return valve and a gas outlet valve, an air inlet valve C, an exhaust valve C and a concentration sensor arranged at any position in the water tank for detecting the content of a certain volatile organic compound in the waste gas absorption liquid.

[0012] Further, a spraying pipe is arranged at the top of the water tank, and the low-temperature storage tank is further connected with an aeration module through a pipeline provided with a control valve.

[0013] Further, the first treatment system comprises a box body, a horizontal partition plate is arranged in the box body, an air inlet vertical pipe extending out of the top of the box body is connected with the partition plate, and the air inlet vertical pipe is connected with an exhaust pipe A, a plurality of vertically arranged condensing pipes are also connected with the partition plate, the ends of the plurality of condensing pipes extend out of the top of the box body and are connected with an exhaust pipeline through a rubber pipe and an activated carbon adsorption tank; an inlet water pipe and an outlet water pipe are arranged at the top and the bottom of the box body above the partition plate, respectively, the inlet water pipe is connected with a water pump in use, the outlet water pipe is fixed at the bottom of a cooling pool, and the water pump is installed in the cooling pool; a liquid outlet pipe and a liquid inlet pipe are arranged at the bottom of the box body, and control valves A are arranged on the liquid outlet pipe and the liquid inlet pipe.

[0014] Further, the telescopic module comprises an inner sleeve and an outer sleeve which are sealed to each other, and a spring is connected between the inner sleeve and the outer sleeve,

[0015] The bottom side of the outer sleeve is mounted on a protrusion arranged on the inner side wall of the water tank, and the end of the inner sleeve is connected to one side of the movable frame; a U-shaped pipe is fixed to the bottom side of the outer sleeve, both ends of the U-shaped pipe penetrating the bottom side of the outer sleeve; one end of the U-shaped pipe is connected to the high-temperature storage tank, and a control valve B connected to the controller is arranged between the U-shaped pipe and the high-temperature storage tank.

[0016] The present application has the following beneficial effects:

[0017] The present application is provided with a waste gas water washing system at the end of the waste gas supply pipeline system, which realizes the absorption of volatile organic compounds in waste gas by the waste gas water washing system, and then separates sulfides, nitrogen oxides and other difficult gases from volatile organic compounds, and then collects and processes volatile organic compounds by the cooperation of the waste gas water washing system and the first processing system.

[0018] Of course, implementing any product of the present application does not necessarily require all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 It is a structural schematic diagram of the synthetic leather industry waste gas treatment device of the present application;

[0021] Figure 2 It is a structural schematic diagram of the fluid supply system of the present application;

[0022] Figure 3 It is a structural schematic diagram of the filter module of the present application;

[0023] Figure 4 It is a structural schematic diagram of the waste gas water washing system of the present application;

[0024] Figure 5 It is a sectional structural schematic diagram of the waste gas water washing system of the present application;

[0025] Figure 6 It is a structural schematic diagram of the telescopic module of the present application;

[0026] Figure 7 It is a sectional structural schematic diagram of the telescopic module of the present application;

[0027] Figure 8 It is a structural schematic diagram of the first processing system of the present application;

[0028] Figure 9 The first processing system of the application is a cross-sectional structure schematic diagram. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be apparently and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0030] In the description of the application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the indicated component or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0031] Please refer to Figure 1 As shown in the drawings, the application is a synthetic leather industrial waste gas treatment device, which comprises a waste gas supply pipeline system 100 for converging synthetic leather industrial waste gas, a waste gas washing system 200 in communication with the gas outlet end of the waste gas supply pipeline system 100, a first processing system 300 in communication with the gas outlet end of the waste gas washing system 200, and a second processing system 400; the waste gas supply pipeline system 100 comprises a waste gas supply pipeline 1, a filter module 14 and a heat exchange cooling mechanism arranged in the gas supply direction of the waste gas supply pipeline 1 in sequence, so that when in use, the filter module 14 is used to filter the solid and viscous substances in the synthetic leather industrial waste gas, and then the first-stage waste gas is sent into the waste gas washing system 200 after being cooled in the heat exchange cooling mechanism, and in the waste gas washing system 200, the volatile organic substances such as xylene and butanone are dissolved in the waste gas absorption liquid to form second-stage waste gas, at this time, the second-stage waste gas containing nitrogen monoxide and hydrogen sulfide is directly sent into the second processing system 400 for treatment, the second processing system 400 converts the nitrogen monoxide and hydrogen sulfide into nitrogen dioxide, water and sulfur dioxide by catalytic oxidation or hot copper mesh, and then the second processing system 400 is used to pass the second-stage waste gas into the alkali absorption liquid for absorption.

[0032] Specifically, in order to separate volatile organic substances from the waste gas, such as Figures 4-5The waste gas washing system 200 comprises a water tank 2 filled with waste gas absorption liquid, an aeration module 23 arranged at the bottom of the water tank 2, and an air inlet pipe 20 penetrating through the bottom side of the water tank 2 and communicating with the aeration module 23, in use, the primary waste gas discharged from the waste gas supply pipeline system 100 is uniformly sent to the bottom of the water tank 2 by the aeration module 23 and fully contacts with the waste gas absorption liquid in the water tank 2, at this time, the volatile organic matters such as dimethylbenzene and butanone in the primary waste gas are dissolved in the waste gas absorption liquid; a telescopic module 24 vertically lifting is arranged at the top of the water tank 2, the end of the telescopic module 24 is connected with a movable frame 25 in the shape of Chinese character'shi' or'mi', a heating pipe 26 in the shape of snake or fret is fixed on one side of the movable frame 25, two hose joints 27 are arranged at the top of the water tank 2 and are communicated, and the two ends of the heating pipe 26 are connected with the two hose joints 27 through the hoses, in use, when it is detected that the waste gas absorption liquid is dissolved with sufficient volatile organic matters, the telescopic module 24 drives the movable frame 25 to move downward, the heating pipe 26 is immersed in the upper layer of the waste gas absorption liquid, the upper layer of the waste gas absorption liquid is heated by the heating pipe 26, after the heating is completed, the volatile organic matters dissolved in the waste gas absorption liquid and layered above the waste gas absorption liquid are volatilized again, and the volatile organic matters are collected by the first treatment system 300 and then transferred to a professional treatment site or treatment equipment for use.

[0033] It can be known that, in use, during the heating of the upper layer of the waste gas absorption liquid, the heating pipe 26 easily adsorbs the solid and viscous matters which are not completely filtered by the filtering module 14, the solid and viscous matters are adsorbed on the outer wall of the heating pipe 26 for a long time, and the heat conduction efficiency of the heating pipe 26 is reduced for a long time, therefore, the water tank 2 is provided with a spray pipe 28, by the arrangement of the spray pipe 28, in use, after the heating of the upper layer of the waste gas absorption liquid is completed, the telescopic module 24 drives the movable frame 25 to move upward, the heating pipe 26 is separated from the upper layer of the waste gas absorption liquid, the spray pipe 28 sprays water to clean the heating pipe 26 and supplement the water brought out by the volatilization of the volatile organic matters, based on this, the water tank 2 is provided with a liquid level sensor, by the arrangement of the liquid level sensor, in use, the amount of water brought out by the volatilization of the volatile organic matters is detected by the liquid level sensor, and the same amount of water is sprayed by the spray pipe 28.

[0034] On the basis of the above, the number of waste gas washing systems 200 is two, and two waste gas washing systems 200 are used in the use process, and the waste gas washing system 200 is used for washing the industrial waste gas flowing through the waste gas washing system 200, and then separating volatile organic compounds from the waste gas; the so-called one spare one use in the above is that when one waste gas washing system 200 is used for dissolving and absorbing volatile organic compounds such as xylene and butanone in the first stage waste gas, at this time, another waste gas washing system 200 is used to heat the upper waste gas absorption liquid by using the heating pipe 26.

[0035] Specifically, the gas inlet pipe 20 is provided with a gas inlet valve A; the top of the water tank 2 is communicated with an exhaust pipe A21 and an exhaust pipe B22, and the exhaust pipe A21 and the exhaust pipe B22 are respectively provided with exhaust valves A and exhaust valves B, and the exhaust pipe A21 and the exhaust pipe B22 are respectively connected to the first treatment system 300 and the second treatment system 400.

[0036] In a specific embodiment, the filter module 14 provided includes a housing 140, and a plurality of filter assemblies are arranged in the housing 140, such as Figure 3 The filter assembly includes a metal filter screen 141, and an inclined plate A 142 and an inclined plate B 143 arranged directly below the metal filter screen 141, a discharge port 144 arranged on the side wall of the housing 140 above the bottom end of the inclined plate B 143 and the inclined plate A 142, and a discharge door 145 matched with the discharge port 144, and an air inlet 146 and an air outlet 147 arranged at the bottom and top of the housing 140 respectively, so that when the filter module 14 is used, the synthetic leather industrial waste gas enters through the air inlet 146 and then is discharged through the air outlet 147, and when the synthetic leather industrial waste gas passes through the metal filter screen 141, the solid and viscous materials will be filtered under the blocking action of the metal filter screen 141, and then the solid and viscous materials will fall under the action of gravity after being filtered, and at this time, the solid and viscous materials fall on the inclined plate B 143 and the inclined plate A 142, and after a certain time of filtering, the discharge door 145 is opened to clean the solid and viscous materials accumulated in the bottom area of the inclined plate B 143 and the inclined plate A 142; and the filter hole diameter of the metal filter screen 141 arranged from top to bottom in the present application gradually increases.

[0037] Similarly, the heat exchange and cooling mechanism provided by the present application comprises a plurality of sequentially connected tubular heat exchangers 12, which can realize gradient cooling in use, thereby reducing the temperature of the gas subjected to the action of the heat exchange and cooling mechanism as much as possible.

[0038] Specifically, during use, the waste gas from the synthetic leather industry enters through the heat medium inlet of the tubular heat exchanger 12 via the waste gas supply pipeline 1 and exits through its heat medium outlet before being sent into the waste gas water washing system 200; simultaneously, cooling gas enters through the refrigerant inlet of the tubular heat exchanger 12 and exits through its refrigerant outlet before being sent into the circulating storage tank 10; such as Figure 2 When in use, the circulating air pump 15 is used as a power source to drive the gas to circulate in the circulating storage tank 10 and the heat exchange and cooling mechanism.

[0039] That is, in this invention, such as Figure 2 The circulating storage tank 10 has multiple porous baffles arranged sequentially from bottom to top. These baffles facilitate gas mixing within the tank. Simultaneously, this invention requires cooling of the primary waste gas in the waste gas supply pipeline system 100 and heating of the upper waste gas absorption liquid during use. To meet these requirements, the circulating storage tank 10 is equipped with an exhaust connector A102 and an inlet connector A103 on one side. The exhaust connector A102 and inlet connector A103 are respectively... An exhaust valve 1021 and an intake valve B1031 are provided; an exhaust connector A102 is connected to an air compressor pump 104, and the outlet of the air compressor pump 104 is connected to an intake connector B111 provided on the high-temperature storage tank 11. An intake valve C1111 is provided on the intake connector B111. A temperature sensor is provided in the circulating storage tank 10. When in use, the circulating storage tank 10 is used to heat the circulating gas. When the heated gas is used, it is sent into the high-temperature storage tank 11 for storage by the action of the air compressor pump 104.

[0040] When it is necessary to heat the upper waste gas absorption liquid, the flow of the high-temperature storage tank 11 into the heating pipe 26 is controlled. At this time, an exhaust connector B112 is provided on one side wall of the high-temperature storage tank 11, and the exhaust connector B112 is connected to one end of the heating pipe 26. An exhaust valve C1121 is provided on the exhaust connector B112. At the same time, when the circulating gas that has been heated by the heating pipe 26 is to be reused, the circulating gas is discharged from the heating pipe 26 into the low-temperature storage tank 13 for temporary storage. Meanwhile, to facilitate gas circulation, the bottom of the circulating storage tank 10 is provided with a return air port 105, and the top is provided with an air outlet 106 connected to the circulating air pump 15. The return air port 105 and the air outlet 106 are respectively provided with a return air valve 1051 and an air outlet valve 1061. The low temperature storage tank 13 is connected to the air inlet connector A103. The temperature sensor is connected to the controller, and the controller is connected to the telescopic module 24, air inlet valve A, air outlet valve A, air outlet valve B, air outlet valve 1021, air inlet valve B1031, return air valve 1051 and air outlet valve 1061, air inlet valve C1111, air outlet valve C1121, and a concentration sensor set at any position in the water tank 2 to detect the content of a certain volatile organic compound in the waste gas absorption liquid.

[0041] The fluid supply system is composed of the circulating storage tank 10, the high-temperature storage tank 11 and the low-temperature storage tank 13, so that the heat energy is recovered and utilized at the same time.

[0042] Meanwhile, water is sprayed into the water tank 2 by the spraying pipe 28, so as to control the water to be fully mixed with the original waste gas absorbing liquid stored in the water tank 2. The low-temperature storage tank 13 is connected with the aeration module 23 through a pipeline provided with a control valve 131, so that the low-temperature storage tank 13 sprays gas into the aeration module 23, and the aeration module 23 is used to realize the mixing and stirring.

[0043] Based on the above, the water can be used to replace the gas, that is, the cooling water is sent into the refrigerant inlet of the tubular heat exchanger 12 to cool the waste gas in the waste gas supply pipeline 1, and the circulating air pump is used as a power source to drive the gas to circulate in the circulating storage tank 10 and the heat exchange cooling mechanism. At this time, the air storage tank is used to spray gas into the aeration module 23, and the aeration module 23 is used to realize the mixing and stirring. On the basis of the above, the switch valve is used to replace the exhaust valve 1021, the air inlet valve B 1031, the air return valve 1051, the air outlet valve 1061, the air inlet valve C 1111 and the like.

[0044] On the basis of using the water to replace the gas for heating, the first pump is arranged in the circulating storage tank 10 and connected with the exhaust joint A 102, and the first pump is used to replace the air compression pump 104. The first pump is used to drive the water to flow from the circulating storage tank 10 into the high-temperature storage tank 11. The second pump is arranged in the low-temperature storage tank 13 and used to pump the water in the low-temperature storage tank 13 into the circulating storage tank 10.

[0045] Of course, it can be understood that in other embodiments, other heat-conducting heat storage fluids such as oil can be used to replace the water.

[0046] It can be understood that in order to facilitate the volatile organic matter to be collected by the first treatment system 300, the first treatment system 300 is arranged in the pipeline between the exhaust joint A 102 and the exhaust joint B 103. Figures 8-9The provided first processing system 300 comprises a box 3, a horizontal partition plate 30 is arranged in the box 3, the partition plate 30 is communicated with an air inlet vertical pipe 31 extending from the top of the box 3, the air inlet vertical pipe 31 is communicated with an air outlet pipe A21, and a plurality of vertical condensing pipes 32 are communicated with the partition plate 30, the ends of the plurality of vertical condensing pipes 32 extend from the top of the box 3 and are communicated with an air outlet pipe 33 through a rubber pipe and an activated carbon adsorption box 34; a liquid outlet pipe 35 and a liquid inlet pipe 36 are arranged at the bottom of the box 3, and control valves A are arranged on the liquid outlet pipe 35 and the liquid inlet pipe 36; during use, the volatile organic matter layer layered on the upper part of the waste gas absorption liquid is heated by using the heating pipe 26, so as to realize the control of the volatile organic matter into a gaseous state; at this time, the gaseous state is sent to the bottom of the box 3, and after the action of the condensing pipe 32, the gaseous state is liquefied and backflows to the bottom of the box 3 to form a liquid state; when a certain degree is reached, the liquid stored in the bottom is discharged through the liquid outlet pipe 35, and a certain amount of cold water is injected into the bottom of the box 3 through the liquid inlet pipe 36, so that the liquid level is immersed in the bottom end of the air inlet vertical pipe 31.

[0047] It should be noted that, in order to better utilize the condensing pipe 32 to condense the gaseous volatile organic matter discharged into the box 3, and avoid the condensing pipe 32 from being unable to condense and backflow after long-term use, the water inlet pipe 38 and the water outlet pipe 37 are arranged at the top and the bottom of the box 3 above the partition plate 30, respectively; during use, the water inlet pipe 38 is connected with a water pump, the water outlet pipe 37 is fixed at the bottom of a cooling pool, and the water pump is installed in the cooling pool; during use, the water in the cooling pool is driven by the water pump to flow into the box 3 through the water inlet pipe 38, and the water in the box 3 is transported to the cooling pool through the water outlet pipe 37 to be naturally cooled.

[0048] It can be understood that, in some possible embodiments, such as Figures 6-7The telescopic module 24 comprises an inner sleeve 241 and an outer sleeve 242 which are sealedly sleeved with each other, and the spring 243 is connected between the inner sleeve 241 and the outer sleeve 242, the bottom side of the outer sleeve 242 is mounted on the protrusion 240 arranged on the inner side wall of the water tank 2, and the end of the inner sleeve 241 is connected to one side of the movable frame 25; the U-shaped pipe 244 is fixed to the bottom side of the outer sleeve 242, both ends of the U-shaped pipe 244 penetrate the bottom side of the outer sleeve 242, and one end of the U-shaped pipe 244 is connected to the high-temperature storage tank 11, and the control valve B connected with the controller is arranged between the U-shaped pipe 244 and the high-temperature storage tank 11, so that the control valve B is opened in use, and the high-temperature fluid in the high-temperature storage tank 11 flows into the U-shaped pipe 244, thereby increasing the temperature in the sealed space composed of the inner sleeve 241 and the outer sleeve 242, and promoting the inner sleeve 241 and the outer sleeve 242 to relatively move away to stretch, thereby driving the telescopic module 24 to stretch and drive the movable frame 25 to move downward. Of course, in other embodiments, the telescopic motor or the telescopic cylinder can be used to replace the telescopic module 24 composed of the inner sleeve 241 and the outer sleeve 242 mentioned above.

[0049] In the description of the present specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited only by the claims and their entire scope and equivalents.

Claims

1. A synthetic leather industrial waste gas treatment device, characterized by: The exhaust gas water washing system (200) is used for washing industrial exhaust gas flowing through the exhaust gas water washing system (200), so as to separate volatile organic compounds from the exhaust gas. The first treatment system (300) is used for treating volatile organic compounds, and the second treatment system (400) is used for treating exhaust gas from which volatile organic compounds are removed. The two exhaust gas water washing systems (200) are used alternately. The water tank (2) is provided with an air inlet pipe (20) at the bottom, and an aeration module (23) is installed at the bottom of the water tank (2) and communicated with the air inlet pipe (20). The water tank (2) is provided with an exhaust pipe A (21) and an exhaust pipe B (22) at the top, and exhaust valves A and B are respectively arranged on the exhaust pipe A (21) and the exhaust pipe B (22). The water tank (2) is filled with exhaust gas absorbing liquid. A telescopic module (24) is installed at the top of the water tank (2) and can be lifted in the vertical direction. The exhaust gas supply pipeline system (100) comprises an exhaust gas supply pipeline (1), a filter module (14) and a heat exchange cooling mechanism arranged in the gas supply direction of the exhaust gas supply pipeline (1) in sequence.

2. The synthetic leather industrial waste gas treatment device according to claim 1, characterized in that, The filter module (14) comprises a shell (140), and a plurality of filter assemblies are arranged in the shell (140). An air inlet (146) and an air outlet A (147) are respectively arranged at the bottom and the top of the shell (140). ​ 3. The synthetic leather industrial waste gas treatment device according to claim 2, characterized in that, The heat exchange cooling mechanism is composed of a plurality of pipe heat exchangers (12) connected in series; in use, the synthetic leather industrial waste gas enters the pipe heat exchanger (12) from the heat medium inlet and is discharged from the heat medium outlet, and then is sent into the waste gas water washing system (200); at the same time, the cooling gas enters the pipe heat exchanger (12) from the cold medium inlet and is discharged from the cold medium outlet, and then is returned to the circulating storage tank (10); further comprising a circulating gas pump (15) which drives the gas to circulate in the circulating storage tank (10) and the heat exchange cooling mechanism.

4. The synthetic leather industrial waste gas treatment device according to claim 3, characterized in that, A plurality of porous partitions are sequentially arranged in the circulating storage tank (10) from bottom to top, and the circulating storage tank (10) is provided with an exhaust joint A (102) and an air inlet joint A (103) on one side in communication; the exhaust joint A (102) and the air inlet joint A (103) are respectively provided with an exhaust valve one (1021) and an air inlet valve B (1031). The bottom of the circulating storage tank (10) is provided with a gas return port (105), and the top is provided with an air outlet B (106) in communication with the circulating gas pump (15), and the gas return port (105) and the air outlet B (106) are respectively provided with a gas return valve (1051) and an air outlet valve (1061). The exhaust joint A (102) is communicated with an air compressor pump (104), the air outlet of the air compressor pump (104) is connected with an air inlet joint B (111) arranged on the high-temperature storage tank (11), and the air inlet joint B (111) is provided with an air inlet valve C (1111); the exhaust joint B (112) is arranged on one side wall of the high-temperature storage tank (11) and communicated with one end of the heating pipe (26), and the exhaust joint B (112) is provided with an exhaust valve C (1121).

5. The synthetic leather industrial waste gas treatment device according to claim 4, characterized in that, The other end of the heating pipe (26) is communicated with a low-temperature storage tank (13), and the low-temperature storage tank (13) is communicated at the air inlet joint A (103); The circulating storage tank (10) is provided with a temperature sensor, and the temperature sensor is connected with a controller; the controller is connected with a telescopic module (24), an air inlet valve A, an exhaust valve A, an exhaust valve B, an exhaust valve one (1021), an air inlet valve B (1031), a gas return valve (1051), an air outlet valve (1061), an air inlet valve C (1111), an exhaust valve C (1121), and a concentration sensor arranged at any position in the water tank (2) for detecting the content of a certain volatile organic compound in the waste gas absorption liquid.

6. The synthetic leather industrial waste gas treatment device according to claim 5, characterized in that, The low-temperature storage tank (13) is also connected with the aeration module (23) through a pipe provided with a control valve (131).

7. The synthetic leather industrial waste gas treatment device according to claim 6, characterized in that, The first processing system (300) comprises a box (3), a horizontal partition plate (30) is arranged in the box (3), the partition plate (30) is communicated with a gas inlet vertical pipe (31) extending from the top of the box (3), the gas inlet vertical pipe (31) is communicated with the exhaust pipe A (21), and a plurality of vertical condensing pipes (32) are communicated with the partition plate (30), the ends of the plurality of condensing pipes (32) extend from the top of the box (3) and are communicated with the activated carbon adsorption box (34) through a rubber pipe and an exhaust pipe (33); The top and bottom of the box (3) above the partition plate (30) are respectively provided with a water inlet pipe (38) and a water outlet pipe (37), the water inlet pipe (38) is connected with a water pump in use, the water outlet pipe (37) is fixed at the bottom of a cooling pool, and the water pump is installed in the cooling pool; The bottom of the box (3) is provided with a liquid outlet pipe (35) and a liquid inlet pipe (36), the liquid outlet pipe (35) and the liquid inlet pipe (36) are both provided with a control valve A.

8. The synthetic leather industrial waste gas treatment device according to any one of claims 5-7, characterized in that, The telescopic module (24) comprises an inner sleeve (241) and an outer sleeve (242) which are sealed and sleeved with each other, and a spring (243) is connected between the inner sleeve (241) and the outer sleeve (242), The bottom side of the outer sleeve (242) is installed on a protrusion (240) arranged on the inner side wall of the water tank (2), and the end of the inner sleeve (241) is connected to one side of the movable frame (25); The bottom side of the outer sleeve (242) is fixed with a U-shaped pipe (244), both ends of the U-shaped pipe (244) penetrate the bottom side of the outer sleeve (242); and one end of the U-shaped pipe (244) is communicated with the high-temperature storage tank (11), and a control valve B connected with the controller is arranged between the U-shaped pipe (244) and the high-temperature storage tank (11).

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