Synthetic leather industrial waste gas treatment device

Abstract

The invention discloses a synthetic leather industrial waste gas treatment device, and relates to the technical field of synthetic leather industrial waste gas treatment. The system comprises a waste gas supply pipeline system, two waste gas washing systems which are arranged in parallel and are communicated with the gas outlet end of the waste gas supply pipeline system, and a first treatment system and a second treatment system which are communicated with the gas outlet ends of the waste gas washing systems, the waste gas washing system is used for washing industrial waste gas flowing through the waste gas washing system, and then volatile organic compounds are separated from the waste gas. The tail end of the waste gas supply pipeline system is communicated with the waste gas washing system, so that volatile organic compounds in the waste gas are absorbed by the waste gas washing system, and difficult gases such as sulfides and nitrogen oxides are separated from the volatile organic compounds; and then the waste gas washing system and the first treatment system are matched to collect and treat the volatile organic compounds.

Description

Technical Field

[0001] The invention belongs to the technical field of synthetic leather industry waste gas treatment, and in particular relates to a synthetic leather industry waste gas treatment device. Background Art

[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 preparation, transportation, and storage; the volatilization of organic matter during coating or impregnation; the volatilization of organic matter during oven heating; and the volatilization of organic matter during post-processing. The waste gas components generated during the production process of leather factories include sulfides, nitrogen oxides, and volatile organic compounds, among which volatile organic compounds mainly include DMF, toluene, xylene, butanone, etc.

[0003] For example, CN1327936C discloses a method for recovering and treating waste gas from dimethylformamide production of dry synthetic leather, which uses a variable frequency energy-saving fan to send the waste gas from dimethylformamide production into a packed tower composed of at least one level of countercurrent absorption and at least one level of mist collection structure. After spraying, packing water absorption and packing mist collection, the packed tower discharges the waste gas that meets the standards while discharging the aqueous solution containing dimethylformamide. The packed tower is composed of a built-in secondary water countercurrent absorption and a secondary mist collection structure. After the dimethylformamide waste gas is absorbed by the first level of spraying in the packed tower and the temperature is reduced, it enters the secondary water countercurrent absorption, and after the secondary packing mist collection, the waste gas meets the emission standards and is discharged externally. When this method is used, it is impossible to separate and collect sulfides, nitrogen oxides and volatile organic compounds for targeted treatment. For another example, CN103007682B discloses a method for treating waste gas from a paint shop based on a concentrating wheel and an RTO, wherein the concentrating wheel includes at least an adsorption zone and a high-temperature desorption zone, and includes the steps of: filtering the waste gas discharged from the paint shop and sending it into the adsorption zone of the concentrating wheel, so that the VOC components in the waste gas are adsorbed by the adsorbent of the fan surface corresponding to the adsorption zone; controlling the concentrating wheel to rotate continuously, when the fan surface adsorbing the VOC components rotates to the high-temperature desorption zone, the VOC components are desorbed by the hot air passed into the high-temperature desorption zone, and sent to the RTO together with the hot air for incineration and then discharged; when the device is used, it needs to consume adsorbents such as activated carbon and zeolite, and the cost of adsorbents such as activated carbon and zeolite is relatively high. At the same time, the VOC wheel waste gas adsorption technology has limited treatment capacity for high-concentration organic waste gas; when the waste gas concentration is too high, it may cause the adsorbent to be saturated, affecting the treatment effect; and when performing high-temperature desorption in the high-temperature desorption zone, energy needs to be consumed to generate high-temperature conditions. Summary of the invention

[0004] The object of the present invention is to provide a synthetic leather industrial waste gas treatment device, by connecting an exhaust gas water washing system at the end of the exhaust gas supply pipeline system, so as to realize the absorption of volatile organic compounds in the exhaust gas by the exhaust gas water washing system, and then separate sulfides, nitrogen oxides and other difficult gases from the volatile organic compounds, thereby solving the problems raised by the existing background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a synthetic leather industrial waste gas treatment device, comprising a waste gas supply pipeline system, two waste gas water washing systems arranged in parallel and connected to the outlet end of the waste gas supply pipeline system, a first treatment system connected to the outlet end of the waste gas water washing system, and a second treatment system; the waste gas water washing system is used to wash the industrial waste gas flowing through the waste gas water washing system, and then separate volatile organic matter from the waste gas; the first treatment system is used to treat the waste gas from which the volatile organic matter is removed; the second treatment system is used to treat the volatile organic matter; the two waste gas water washing systems are used in a standby mode and in a second mode.

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

[0008] Furthermore, a telescopic module that can be raised and lowered in the vertical direction is installed on the top of the water tank, and the end of the telescopic module is connected to a "X" or "M" shaped movable frame, and a serpentine or zigzag shaped heating pipe is fixed to one side of the movable frame. Two hose connectors are arranged on the top of the water tank, and the two ends of the heating pipe are connected to the two hose connectors through hoses respectively.

[0009] Furthermore, the exhaust gas supply pipeline system includes an exhaust gas supply pipeline, filter modules and heat exchange and cooling mechanisms arranged in sequence along the gas supply direction of the exhaust gas supply pipeline; the filter module includes a shell, and a plurality of filter components are arranged in the shell, and the filter components include a metal filter screen, and an inclined plate A and an inclined plate B arranged directly below the metal filter screen, and a discharge port is arranged on the side wall of the shell above the bottom ends of the inclined plates B and A, and the discharge port is cooperated with a discharge door, and an air inlet and an air outlet are respectively arranged at the bottom and top of the shell.

[0010] Furthermore, the heat exchange and cooling mechanism is composed of a plurality of tubular heat exchangers connected in series in sequence; when in use, the synthetic leather industrial waste gas enters from the heat medium inlet of the tubular heat exchanger through the waste gas supply pipeline, and is discharged from its heat medium outlet and then sent to the waste gas washing system; at the same time, the cooling gas enters from the refrigerant inlet of the tubular heat exchanger, and is discharged from its refrigerant outlet and then sent to the circulation tank; it also includes a circulation air pump, which is used as a power source to drive the gas to circulate in the circulation tank and the heat exchange and cooling mechanism; a plurality of porous partitions are sequentially arranged in the circulation tank from bottom to top, and one side of the circulation tank is connected to an exhaust joint A , an air inlet connector A, an exhaust valve 1 and an air inlet valve B are respectively arranged on the exhaust connector A and the air inlet connector A; an air return port is arranged at the bottom of the circulating storage tank, and an air outlet connected with the circulating air pump is arranged at the top, and an air return valve and an air outlet valve are respectively arranged at the air return port and the air outlet; the exhaust connector A is connected to the air compression pump, the air outlet of the air compression pump is connected to the air inlet connector B arranged on the high-temperature storage tank, and the air inlet connector B is arranged with an air inlet valve C; an exhaust connector B is arranged on one side wall of the high-temperature storage tank, and the exhaust connector B is connected with one end of the heating pipe, and the exhaust valve C is arranged on the exhaust connector B.

[0011] Furthermore, the other end of the heating pipe is connected to a low-temperature storage tank, which is connected to the air inlet joint A; a temperature sensor is arranged in the circulation storage tank, and the temperature sensor is connected to a controller, and the controller is connected to a telescopic module, an air inlet valve A, an exhaust valve A, an exhaust valve B, an exhaust valve 1, an air inlet valve B, a return valve and an air 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 matter in the exhaust gas absorption liquid.

[0012] Furthermore, a spray pipe is provided on the top of the water tank, and the low-temperature storage tank is also connected to the aeration module through a pipeline provided with a control valve.

[0013] Furthermore, the first treatment system includes a box body, a horizontally arranged partition plate is provided in the box body, the partition plate is connected with an air intake vertical pipe whose end extends from the top of the box body, and the air intake vertical pipe is connected to the exhaust pipe A, and the partition plate is also connected with a plurality of vertically arranged condensing pipes, the ends of the plurality of condensing pipes extend from the top of the box body, and are connected to an activated carbon adsorption box with an exhaust pipeline through a rubber tube; a water inlet pipe and a water outlet pipe are respectively provided at the top and bottom of the box body above the partition plate, and when in use, the water inlet pipe is connected to a water pump, the water outlet pipe is fixed to the bottom of a cooling pool, and the water pump is installed in a cooling pool; a drain pipe and a liquid inlet pipe are provided at the bottom of the box body, and a control valve A is provided on both the drain pipe and the liquid inlet pipe.

[0014] Furthermore, the telescopic module comprises an inner sleeve and an outer sleeve which are sealed and sleeved with each other, and a spring is connected between the inner sleeve and the outer sleeve.

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

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

[0017] The present invention connects an exhaust gas water washing system to the end of the exhaust gas supply pipeline system, so that the exhaust gas water washing system is used to absorb volatile organic compounds in the exhaust gas, and then sulfides, nitrogen oxides and other difficult gases are separated from the volatile organic compounds, and then the exhaust gas water washing system and the first treatment system are used in combination to collect and treat the volatile organic compounds.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the synthetic leather industrial waste gas treatment device of the present invention;

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

[0022] Figure 3 This is a schematic diagram of the structure of the filter module of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the waste gas washing system of the present invention;

[0024] Figure 5 It is a schematic cross-sectional structure diagram of the waste gas washing system of the present invention;

[0025] Figure 6 This is a schematic diagram of the telescopic module structure of the present invention;

[0026] Figure 7 This is a schematic cross-sectional structural diagram of the telescopic module of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the first processing system of the present invention;

[0028] Fig. 9 It is a schematic cross-sectional structural diagram of the first processing system of the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] See also Figure 1 As shown, the present invention is a synthetic leather industrial waste gas treatment device, comprising a waste gas supply pipeline system 100 for collecting synthetic leather industrial waste gas, a waste gas washing system 200 connected to the outlet end of the waste gas supply pipeline system 100, and a first treatment system 300 and a second treatment system 400 connected to the outlet end of the waste gas washing system 200; the waste gas supply pipeline system 100 comprises a waste gas supply pipeline 1, filter modules 14 and a heat exchange and cooling mechanism arranged in sequence along the gas supply direction of the waste gas supply pipeline 1, and then when in use, the filter module 14 is used to achieve the waste gas of the synthetic leather The solid and sticky substances in the industrial waste gas are filtered and treated, and then the obtained primary waste gas is sent to the waste gas washing system 200 after the heat exchange and cooling mechanism completes cooling. In the waste gas washing system 200, volatile organic matter such as xylene and butanone is dissolved in the waste gas absorption liquid to form secondary waste gas. At this time, the secondary waste gas containing nitrogen monoxide and hydrogen sulfide is directly sent to the second treatment system 400 for treatment. The second treatment system 400 uses catalytic oxidation or hot copper mesh to convert nitrogen monoxide and hydrogen sulfide into nitrogen dioxide, water and sulfur dioxide, and then pass into alkaline absorption liquid for absorption.

[0032] Specifically, in order to separate volatile organic compounds from exhaust gas, such as Figure 4-5The waste gas washing system 200 provided by the present invention includes a water tank 2 filled with waste gas absorption liquid, and an aeration module 23 is arranged at the bottom of the water tank 2, and an air inlet pipe 20 that penetrates the bottom side of the water tank 2 and is connected to the aeration module 23. When in use, the primary waste gas discharged by the waste gas supply pipeline system 100 is evenly sent to the bottom of the water tank 2 through the aeration module 23, and is fully in contact with the waste gas absorption liquid in the water tank 2. At this time, volatile organic compounds such as xylene and butanone in the primary waste gas are dissolved in the waste gas absorption liquid; and a telescopic module 24 that can be lifted and lowered in the vertical direction is installed on the top of the water tank 2, and the end of the telescopic module 24 is connected to a "cross" or "M" shaped movable frame 25, and a serpentine is fixed on one side of the movable frame 25. Or a zigzag-shaped heating tube 26, two hose connectors 27 are arranged on the top of the water tank 2, and the two ends of the heating tube 26 are connected to the two hose connectors 27 through hoses; and then in use, when it is detected that there is a sufficient amount of volatile organic matter dissolved in the waste gas absorption liquid, the telescopic module 24 is controlled to drive the movable frame 25 to move downward, and then the heating tube 26 is controlled to be immersed in the upper layer of the waste gas absorption liquid, and then the upper layer of the waste gas absorption liquid is heated by the heating tube 26. After the heating is completed, the volatile organic matter dissolved in the waste gas absorption liquid and layered above the waste gas absorption liquid is evaporated again, and the first treatment system 300 is used to collect the volatile organic matter and transfer it to a professional treatment site or treatment equipment for use.

[0033] It can be known that during use, when the upper exhaust gas absorption liquid is heated, the heating tube 26 is easy to absorb the solids and sticky substances that are not completely filtered by the filter module 14. These solids and sticky substances will be adsorbed on the outer wall of the heating tube 26 when used for a long time. When used for a long time, it is easy to cause the thermal conductivity of the heating tube 26 to decrease. Therefore, the present invention is provided with a spray pipe 28 on the top of the water tank 2. By using the setting of the spray pipe 28, when the upper exhaust gas absorption liquid is heated, the telescopic module 24 is controlled to drive the movable frame 25 to move upward, and then the heating tube 26 is controlled to separate from the upper exhaust gas absorption liquid. At this time, the spray pipe 28 is controlled to spray water to clean the heating tube 26 while replenishing the water brought out when the volatile organic matter evaporates; based on this, a liquid level sensor can be set in the water tank 2, and then the setting of the liquid level sensor can be used to detect the amount of water brought out when the volatile organic matter evaporates through the liquid level sensor during use, and then the same amount of water is sprayed through the spray pipe 28 during spraying.

[0034] On the basis of the above, the number of waste gas washing systems 200 is two, and during use, the two waste gas washing systems 200 are in use, one as a standby and the other as a backup, and the waste gas washing system 200 is used to wash the industrial waste gas flowing through the waste gas washing system 200, and then separate the volatile organic matter from the waste gas; the so-called one as a standby and one as a backup in the above means that when one waste gas washing system 200 is dissolving and absorbing volatile organic matter such as xylene and butanone in the primary waste gas, at this time, in the other waste gas washing system 200, the heating pipe 26 is used to heat the upper waste gas absorption liquid.

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

[0036] In a specific embodiment, the filter module 14 provided includes a housing 140, and a plurality of filter components are arranged in the housing 140, such as Figure 3 The filter assembly includes a metal filter 141, and an inclined plate A142 and an inclined plate B143 arranged directly below the metal filter 141. A discharge port 144 is arranged on the side wall of the shell 140 located above the bottom ends of the inclined plates B143 and A142, and a discharge door 145 is arranged in conjunction with the discharge port 144. An air inlet 146 and an air outlet 147 are arranged at the bottom and top of the shell 140, respectively. When the filter module 14 is in use, the synthetic leather industrial waste gas enters through the air inlet 146 and then passes through the air outlet 147. When the synthetic leather industrial waste gas passes through the metal filter 141, the solids and sticky substances will be filtered out under the blocking effect of the metal filter 141, and then the solids and sticky substances will fall down under the action of gravity after filtration, and then fall onto the inclined plate B143 and the inclined plate A142. After a certain period of filtration, the unloading door 145 is opened to clean up the solids and sticky substances enriched in the bottom area of ​​the inclined plate B143 and the inclined plate A142; and the pore size of the metal filter 141 arranged from top to bottom in the present invention gradually increases.

[0037] Similarly, the heat exchange and cooling mechanism provided by the present invention is composed of a plurality of tubular heat exchangers 12 connected in series, and a plurality of tubular heat exchangers 12 connected in series are used to achieve gradient cooling during use, thereby reducing the temperature of the gas acting on the heat exchange and cooling mechanism as much as possible during use.

[0038] Specifically, when in use, the synthetic leather industrial waste gas enters from the heat medium inlet of the tubular heat exchanger 12 through the waste gas supply pipeline 1, and is discharged from its heat medium outlet and then sent to the waste gas washing system 200; at the same time, the cooling gas enters from the refrigerant inlet of the tubular heat exchanger 12, and is discharged from its refrigerant outlet and then sent to the circulation storage tank 10; 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 the present invention, Figure 2 A plurality of porous partitions are sequentially arranged in the circulation storage tank 10 from bottom to top. The gas in the circulation storage tank 10 is mixed by the plurality of porous partitions. At the same time, in the present invention, on the one hand, the primary exhaust gas in the exhaust gas supply pipeline system 100 needs to be cooled, and on the other hand, the upper exhaust gas absorption liquid needs to be heated when in use. Based on this requirement, one side of the circulation storage tank 10 provided by the present invention is connected and provided with an exhaust connector A102 and an intake connector A103. The exhaust connector A102 and the intake connector A103 are respectively An exhaust valve 1021 and an air inlet valve B1031 are provided; the exhaust connector A102 is connected to the air compression pump 104, the air outlet of the air compression pump 104 is connected to the air inlet connector B111 provided on the high-temperature storage tank 11, and the air inlet connector B111 is provided with an air inlet valve C1111, a temperature sensor is provided in the circulation storage tank 10, and the circulation storage tank 10 is used to heat the circulation gas when in use, and the heated gas is sent to the high-temperature storage tank 11 for storage by the air compression pump 104 when in use;

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

[0041] In the present invention, a fluid supply system is formed by a circulation storage tank 10, a high-temperature storage tank 11 and a low-temperature storage tank 13, and heat energy is utilized while heat energy recovery is achieved.

[0042] At the same time, water is sprayed into the water tank 2 using the spray pipe 28. In order to control the water to be fully and evenly mixed with the original waste gas absorption liquid stored in the water tank 2, the low-temperature storage tank 13 provided by the present invention is also connected to the aeration module 23 through a pipeline with a control valve 131. When in use, the low-temperature storage tank 13 is used to spray gas into the aeration module 23, and the aeration module 23 is used to achieve uniform mixing.

[0043] Based on the above, the present invention can use water instead of gas, that is, when in use, cooling water is sent to the refrigerant inlet of the tubular heat exchanger 12 to cool the exhaust gas in the exhaust gas supply pipe 1, and at the same time, the circulating air pump is used as a power source to drive the gas to circulate in the circulation storage tank 10 and the heat exchange and cooling mechanism; at this time, the gas is sprayed into the aeration module 23 through an external air storage tank, and the aeration module 23 is used to achieve uniform mixing; and on the basis of the above, the exhaust valve 1021, the air intake valve B1031, the return valve 1051 and the air outlet valve 1061, the air intake valve C1111, etc. that control the gas flow are replaced by switch valves.

[0044] On the basis of using water instead of gas for heating, a first pump connected to the exhaust joint A102 is provided in the circulating storage tank 10, and the first pump is used to replace the air compression pump 104, and then the first pump is used to drive water from the circulating storage tank 10 to flow into the high-temperature storage tank 11, and at the same time, a second pump is provided in the low-temperature storage tank 13 for pumping the internal water into the circulating storage tank 10.

[0045] Of course, it is known that in other embodiments, other heat-conducting thermal storage fluids such as oil may be used to replace water.

[0046] It is understandable that in the present invention, in order to facilitate the use of the first processing system 300 to collect volatile organic compounds, such as Figure 8-9The first treatment system 300 provided includes a box body 3, a horizontally arranged partition plate 30 is arranged in the box body 3, an air intake vertical pipe 31 whose end extends from the top of the box body 3 is connected to the partition plate 30, and the air intake vertical pipe 31 is connected to the exhaust pipe A21, and a plurality of vertically arranged condensing pipes 32 are also connected to the partition plate 30, and the ends of the plurality of condensing pipes 32 extend from the top of the box body 3 and are connected to an activated carbon adsorption box 34 through a rubber tube and an exhaust pipe 33; a drain pipe 35 and a liquid inlet pipe 36 are arranged at the bottom of the box body 3, and the drain pipe 35 A control valve A is provided on the liquid inlet pipe 36. When in use, the volatile organic matter layer stratified on the upper part of the exhaust gas absorption liquid is heated by the heating pipe 26, so as to control the volatile organic matter to form a gas. At this time, the gas is sent to the bottom of the box body 3, liquefied by the condenser 32, and then refluxed to the bottom of the box body 3 to form a liquid. After a certain level, the drain pipe 35 is opened to discharge the liquid stored at the bottom, and a certain amount of cold water is injected into the bottom of the box body 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 condenser 32 to condense the gaseous volatile organic compounds discharged into the box body 3 and avoid the inability to use the condenser 32 for condensation reflux due to long-term use, the present invention respectively arranges an inlet pipe 38 and an outlet pipe 37 at the top and bottom of the box body 3 above the partition plate 30. When in use, the inlet pipe 38 is connected to a water pump, the outlet pipe 37 is fixed to the bottom of a cooling pool, and the water pump is installed in a cooling pool. When in use, the water pump is used to drive the water in the cooling pool to flow into the box body 3 through the inlet pipe 38, and the water in the box body 3 is transported to the cooling pool through the outlet pipe 37 for natural cooling.

[0048] It is understandable that in some possible implementations, such as Figure 6-7The telescopic module 24 includes 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 convex block 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; a U-shaped tube 244 is fixed to the bottom side of the outer sleeve 242, and both ends of the U-shaped tube 244 pass through the bottom side of the outer sleeve 242; and one end of the U-shaped tube 244 is connected to the high-temperature storage tank 11, and a control valve B connected to the controller is arranged between the U-shaped tube 244 and the high-temperature storage tank 11, and then the control valve B is opened when in use, so that the high-temperature fluid in the high-temperature storage tank 11 flows into the U-shaped tube 244, thereby controlling the temperature in the closed space formed by the inner sleeve 241 and the outer sleeve 242 to rise, so as to cause the inner sleeve 241 and the outer sleeve 242 to move relatively away from each other for stretching, and then controlling the telescopic module 24 to extend and drive the movable frame 25 to move downward. Of course, in some other embodiments, a telescopic motor or a telescopic cylinder may be used to replace the telescopic module 24 composed of the inner sleeve 241 and the outer sleeve 242 mentioned above in this article.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation 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 present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A synthetic leather industrial waste gas treatment device, characterized in that: It comprises an exhaust gas supply pipeline system (100), two exhaust gas water washing systems (200) arranged in parallel and connected to the exhaust gas supply pipeline system (100), a first treatment system (300) connected to the exhaust gas outlet of the exhaust gas water washing system (200), and a second treatment system (400); The waste gas washing system (200) is used to wash the industrial waste gas flowing through the waste gas washing system (200) with water, thereby separating volatile organic matter from the waste gas; The first treatment system (300) is used to treat waste gas to remove volatile organic matter; the second treatment system (400) is used to treat volatile organic matter; The two waste gas water washing systems (200) are used as a backup system.

2. The synthetic leather industrial waste gas treatment device according to claim 1, characterized in that: The waste gas washing system (200) comprises a water tank (2), the bottom of the water tank (2) is connected to an air intake pipe (20), an aeration module (23) connected to the air intake pipe (20) is installed at the bottom of the water tank (2), and an air intake valve A is arranged on the air intake pipe (20); An exhaust pipe A (21) and an exhaust pipe B (22) are connected to the top of the water tank (2), an exhaust valve A and an exhaust valve B are respectively provided on the exhaust pipe A (21) and the exhaust pipe B (22), and the exhaust pipe A (21) and the exhaust pipe B (22) are respectively connected to the first treatment system (300) and the second treatment system (400); The water tank (2) is filled with waste gas absorption liquid.

3. The synthetic leather industrial waste gas treatment device according to claim 2, characterized in that: A telescopic module (24) capable of being lifted and lowered in a vertical direction is installed on the top of the water tank (2); the end of the telescopic module (24) is connected to a "X" or "M" shaped movable frame (25); a serpentine or meander-shaped heating pipe (26) is fixed to one side of the movable frame (25); two hose connectors (27) are arranged on the top of the water tank (2); and the two ends of the heating pipe (26) are connected to the two hose connectors (27) through hoses.

4. The synthetic leather industrial waste gas treatment device according to claim 3, characterized in that: The waste gas supply pipeline system (100) comprises a waste gas supply pipeline (1), a filter module (14) and a heat exchange and cooling mechanism which are sequentially arranged along the gas supply direction of the waste gas supply pipeline (1); The filter module (14) comprises a shell (140), wherein a plurality of filter components are arranged in the shell (140), wherein the filter components comprise a metal filter (141), and an inclined plate A (142) and an inclined plate B (143) arranged directly below the metal filter (141), and a discharge port (144) is arranged on a side wall of the shell (140) above the bottom ends of the inclined plate B (143) and the inclined plate A (142), and a discharge door (145) is arranged in conjunction with the discharge port (144); An air inlet (146) and an air outlet (147) are respectively arranged at the bottom and the top of the shell (140).

5. The synthetic leather industrial waste gas treatment device according to claim 4, characterized in that: The heat exchange and cooling mechanism comprises a plurality of tubular heat exchangers (12) connected in series. When in use, the synthetic leather industrial waste gas enters from the heat medium inlet of the tubular heat exchanger (12) through the waste gas supply pipeline (1), is discharged from its heat medium outlet, and is then sent to the waste gas washing system (200). At the same time, the cooling gas enters from the refrigerant inlet of the tubular heat exchanger (12), is discharged from its refrigerant outlet, and is then returned to the circulation storage tank (10). A circulation air pump (15) is also provided, and the circulation air pump (15) serves as a power source to drive the gas to circulate in the circulation storage tank (10) and the heat exchange and cooling mechanism.

6. The synthetic leather industrial waste gas treatment device according to claim 5, characterized in that: A plurality of porous partitions are sequentially arranged in the circulation storage tank (10) from bottom to top, and an exhaust joint A (102) and an intake joint A (103) are arranged in communication on one side of the circulation storage tank (10), and an exhaust valve 1 (1021) and an intake valve B (1031) are respectively arranged on the exhaust joint A (102) and the intake joint A (103); The bottom of the circulation storage tank (10) is provided with an air return port (105), and the top is provided with an air outlet (106) which is connected with the circulation air pump (15), and the air return port (105) and the air outlet (106) are respectively provided with an air return valve (1051) and an air outlet valve (1061); The exhaust connector A (102) is connected to an air compression pump (104), the air outlet of the air compression pump (104) is connected to an air intake connector B (111) provided on the high-temperature storage tank (11), and an air intake valve C (1111) is provided on the air intake connector B (111); an exhaust connector B (112) is provided on a side wall of the high-temperature storage tank (11), and the exhaust connector B (112) is connected to one end of a heating pipe (26), and an exhaust valve C (1121) is provided on the exhaust connector B (112).

7. The synthetic leather industrial waste gas treatment device according to claim 6, characterized in that: The other end of the heating pipe (26) is connected to a low-temperature storage tank (13), and the low-temperature storage tank (13) is connected to an air inlet connector A (103); A temperature sensor is arranged in the circulation storage tank (10), the temperature sensor is connected to a controller, the controller is connected to a telescopic module (24), an air intake valve A, an exhaust valve A, an exhaust valve B, an exhaust valve 1 (1021), an air intake valve B (1031), an air return valve (1051), an air outlet valve (1061), an air intake 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 matter in the exhaust gas absorption liquid.

8. The synthetic leather industrial waste gas treatment device according to claim 7, characterized in that: A spray pipe (28) is provided on the top of the water tank (2), and the low-temperature storage tank (13) is also connected to the aeration module (23) through a pipeline provided with a control valve (131).

9. The synthetic leather industrial waste gas treatment device according to claim 8, characterized in that: The first treatment system (300) comprises a box (3), wherein a horizontally arranged partition plate (30) is arranged inside the box (3), wherein the partition plate (30) is connected to an air intake vertical pipe (31) whose end extends from the top of the box (3), and the air intake vertical pipe (31) is connected to an exhaust pipe A (21), and the partition plate (30) is also connected to a plurality of vertically arranged condensation pipes (32), wherein the ends of the plurality of condensation pipes (32) extend from the top of the box (3) and are connected to an activated carbon adsorption box (34) via a rubber tube and an exhaust pipe (33); A water inlet pipe (38) and a water outlet pipe (37) are respectively arranged at the top and bottom of the box body (3) above the partition plate (30); when in use, the water inlet pipe (38) is connected to a water pump, the water outlet pipe (37) is fixed to the bottom of a cooling pool, and the water pump is installed in the cooling pool; A liquid discharge pipe (35) and a liquid inlet pipe (36) are arranged at the bottom of the box body (3), and a control valve A is arranged on both the liquid discharge pipe (35) and the liquid inlet pipe (36).

10. A synthetic leather industrial waste gas treatment device according to any one of claims 3 to 9, 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 mounted 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); A U-shaped tube (244) is fixed to the bottom side of the outer sleeve (242), and both ends of the U-shaped tube (244) pass through the bottom side of the outer sleeve (242); one end of the U-shaped tube (244) is connected to the high-temperature storage tank (11), and a control valve B connected to the controller is provided between the U-shaped tube (244) and the high-temperature storage tank (11).

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