Organic waste gas treatment system

Abstract

The utility model discloses an organic waste gas treatment system which comprises a filter, a catalytic reaction furnace and a plurality of activated carbon adsorption boxes, the outlet end of the filter is connected with a first pipeline, and the first pipeline is respectively connected with fourth pipelines of the activated carbon adsorption boxes; the system further comprises a tenth pipeline, the tenth pipeline is connected with a desorption fan, the desorption fan is connected with a catalytic reaction furnace through a pipeline, and the catalytic reaction furnace is connected with a twelfth pipeline, a thirteenth pipeline and a fifteenth pipeline through eleventh pipelines. The other end of the fifteenth pipeline is connected with the tenth pipeline, and an inner circulation valve is installed in the middle of the fifteenth pipeline. According to the utility model, waste gas must be filtered to enter a subsequent adsorption stage, and particles with different particle sizes are filtered out in a physical filtering manner and are intercepted in pretreatment equipment, so that the problems of activated carbon micropore blockage and activated carbon inactivation are solved.

Description

Technical Field

[0001] This utility model relates to the field of organic waste gas treatment technology, specifically an organic waste gas treatment system. Background Technology

[0002] Organic waste gas treatment refers to the adsorption, filtration, and purification of organic waste gases generated during industrial production processes. Organic waste gases are generally characterized by being flammable and explosive, toxic and harmful, insoluble in water, soluble in organic solvents, and difficult to treat. Commonly used methods for organic waste gas treatment include activated carbon adsorption, catalytic combustion, catalytic oxidation, acid-base neutralization, and plasma methods.

[0003] An organic waste gas treatment device disclosed in CN116510462A includes an XJ cyclone scrubber, a constant-temperature adsorption-desorption bed for absorbing organic matter, a catalytic combustion device for burning organic matter, and an exhaust stack for discharging gas. The XJ cyclone scrubber has a waste gas collection component at its front end. The waste gas collected by the waste gas collection component enters the XJ cyclone scrubber, and simultaneously, the XJ cyclone scrubber transports the treated waste gas through the exhaust outlet to the constant-temperature adsorption-desorption bed. The constant-temperature adsorption-desorption bed is equipped with activated carbon, which treats the organic matter in the waste gas. When the activated carbon inside the constant-temperature adsorption-desorption bed becomes saturated, the constant-temperature adsorption-desorption bed stops working, and the clean gas is automatically discharged. This raises the temperature of the circulating gas to the reaction temperature, achieving compliant emission of the waste gas, regenerating the activated carbon, and thoroughly catalytically decomposing the organic matter.

[0004] Existing technologies involve directly introducing waste gas into activated carbon for adsorption, which leads to blockage of the activated carbon micropores and ultimately deactivation of the activated carbon. To address this, we propose an organic waste gas treatment system. Utility Model Content

[0005] The purpose of this invention is to provide an organic waste gas treatment system to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an organic waste gas treatment system, including a filter, a catalytic reactor, and multiple activated carbon adsorption boxes, wherein the outlet end of the filter is connected to a first pipe, the first pipe is connected to a fourth pipe of each of the multiple activated carbon adsorption boxes, and the fourth pipe is equipped with a first adsorption air valve.

[0007] It also includes a tenth pipe, which is connected to a desorption fan. The desorption fan is connected to a catalytic reactor via a pipe. The catalytic reactor is connected to the twelfth, thirteenth, and fifteenth pipes via an eleventh pipe.

[0008] The other end of the fifteenth pipe is connected to the tenth pipe, and an internal circulation valve is installed in the middle of the fifteenth pipe;

[0009] The thirteenth pipe is connected to the fourteenth pipe and the ninth pipe of the activated carbon adsorption box, and the ninth pipe is equipped with a second desorption air valve; the fourteenth pipe is equipped with a replenishing air valve and a replenishing air fan in sequence.

[0010] The seventh pipe of each of the multiple activated carbon adsorption boxes is connected to the eighth pipe, which is connected to the adsorption fan, and the seventh pipe is equipped with a second adsorption air valve.

[0011] The twelfth pipe is connected to the eighth pipe, and the twelfth pipe is equipped with an overheat direct discharge valve;

[0012] The fifth pipe of each of the multiple activated carbon adsorption boxes is connected to the sixth pipe, the fifth pipe is equipped with a first desorption air valve, and the sixth pipe is connected to the tenth pipe.

[0013] Preferably, the third pipes of the multiple activated carbon adsorption boxes are all connected to the second pipes, the third pipes are equipped with cooling spray valves, and the third pipes extend into the interior of the activated carbon adsorption boxes and are equipped with spray heads.

[0014] Preferably, the adsorption fan is connected to a chimney via a pipe; a desorption fresh air valve is installed at one end of the tenth pipe.

[0015] Preferably, one end of the filter is equipped with an air inlet duct, and the air inlet duct is equipped with an air inlet valve.

[0016] Preferably, a first dust removal and flame arrester is installed in the middle of the pipeline between the desorption fan and the catalytic reactor, and a second dust removal and flame arrester is installed at one end of the eleventh pipeline located at the catalytic reactor.

[0017] Preferably, the filter contains a G4 filter, an F7 filter, and an F9 filter installed in sequence, and all three filters are bag filters.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: The filter is equipped with a G4 filter, an F7 filter, and an F9 filter in sequence, all of which are bag filters; the exhaust gas dust has the characteristics of small particle size and low content, with most particles below 10μm. If these exhaust gases directly enter the activated carbon for adsorption, it will cause the micropores of the activated carbon to become clogged, ultimately leading to the deactivation of the activated carbon; therefore, the exhaust gas must be filtered before entering the subsequent adsorption stage. By using physical filtration, particles of different sizes are filtered out and retained in the pretreatment equipment, thus solving the problems of activated carbon micropore clogging and activated carbon deactivation. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a utility model Figure 1 A schematic diagram of the upper structure;

[0022] Figure 3 This is a utility model Figure 1 A schematic diagram of the lower part of the structure.

[0023] In the diagram: 1. Inlet air valve; 2. Filter; 3. Cooling spray valve; 4. Desorption air valve; 5. Adsorption air valve; 6. Activated carbon adsorption box; 7. Desorption air valve; 8. Adsorption air valve; 9. Adsorption fan; 10. Chimney; 11. Desorption fresh air valve; 12. Desorption fan; 13. Dust removal flame arrestor; 14. Catalytic reactor; 15. Dust removal flame arrestor; 16. Overheat direct exhaust valve; 17. Make-up cooling air valve; 18. Make-up cooling fan; 19. 1. Internal circulation valve; 201. First pipeline; 202. Second pipeline; 203. Third pipeline; 204. Fourth pipeline; 205. Fifth pipeline; 206. Sixth pipeline; 207. Seventh pipeline; 208. Eighth pipeline; 209. Ninth pipeline; 210. Tenth pipeline; 211. Eleventh pipeline; 212. Twelfth pipeline; 213. Thirteenth pipeline; 214. Fourteenth pipeline; 215. Fifteenth pipeline. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0025] Please see Figure 1-3In this embodiment of the present invention, an organic waste gas treatment system includes a filter 2, a catalytic reactor 14, and multiple activated carbon adsorption boxes 6. One end of the filter 2 is equipped with an air inlet pipe, which is fitted with an air inlet valve 1. The outlet end of the filter 2 is connected to a first pipe 201, which is connected to a fourth pipe 204 of each of the multiple activated carbon adsorption boxes 6. The fourth pipe 204 is fitted with a first adsorption valve 5. The filter 2 contains a G4 filter, an F7 filter, and an F9 filter, all of which are bag filters. The waste gas dust has characteristics such as small particle size and low content, mostly below 10μm. If this waste gas directly enters the activated carbon for adsorption, it will cause blockage of the activated carbon micropores, ultimately leading to activated carbon deactivation. Therefore, the waste gas must be filtered before entering the subsequent adsorption stage. Through physical filtration, particles of different sizes are filtered out and retained in the pretreatment equipment. After pretreatment, the organic waste gas is introduced into the adsorption unit by the fan, where it is evenly distributed on the surface of activated carbon. Relying on the complex internal structure and super-large surface area of ​​activated carbon, the activated carbon adsorbs the organic waste gas on its surface. This process takes less time, but the longer the time, the more thorough the adsorption. Moreover, no chemical reaction occurs between the two, thus achieving the effect of purification of the organic waste gas.

[0026] It also includes a tenth pipe 210, one end of which is equipped with a desorption fresh air valve 11. The tenth pipe 210 is connected to a desorption fan 12, which is connected to a catalytic reactor 14 via a pipe. The catalytic reactor 14 is connected to the twelfth pipe 212, the thirteenth pipe 213, and the fifteenth pipe 215 via the eleventh pipe 211. A first dust removal flame arrester 13 is installed in the middle of the pipe between the desorption fan 12 and the catalytic reactor 14. The eleventh pipe 211 is located at... A second dust removal flame arrester 15 is installed at one end of the catalytic reactor 14. The first dust removal flame arrester 13 and the second dust removal flame arrester 15 can play the role of dust removal and flame arrestor, preventing the flame from overflowing from the catalytic reactor. When the activated carbon in the activated carbon adsorption box reaches saturation, the activated carbon adsorption box switches to the desorption unit. Desorption requires external heating, and the heating device is located in the combustion furnace. After it is turned on, the catalyst is preheated. After the combustion furnace reaches the set temperature, hot air is introduced into the desorption bed, and the organic waste gas is desorbed from the surface of the activated carbon under the action of heating. Since temperature will change the internal structure of activated carbon, thermocouple temperature sensors are installed in the adsorption and desorption units. When the temperature is too high, the cooling air system is adjusted in time to ensure the optimal desorption effect and provide a safe working environment for the activated carbon. Even if the temperature sensor malfunctions, the adsorption unit is also equipped with physical fire-fighting facilities. High-concentration organic waste gas enters the combustion furnace under the action of the desorption fan. Under the catalytic action of the precious metal platinum alloy, it is burned and decomposed into water and carbon dioxide, thereby purifying the waste gas. This combustion process is low-temperature, rapid, and flameless, and generates a large amount of heat, which can be reused in the desorption and combustion oxidation processes of organic waste gases, thus significantly reducing energy consumption costs.

[0027] The other end of the fifteenth pipe 215 is connected to the tenth pipe 210, and an internal circulation valve 19 is installed in the middle of the fifteenth pipe 215;

[0028] The thirteenth pipe 213 is connected to the fourteenth pipe 214 and the ninth pipe 209 of the activated carbon adsorption box 6 respectively. The ninth pipe 209 is equipped with a second desorption air valve 7. The fourteenth pipe 214 is equipped with a supplementary cooling air valve 17 and a supplementary cooling air fan 18 in sequence.

[0029] The seventh pipe 207 of multiple activated carbon adsorption boxes 6 is connected to the eighth pipe 208, the eighth pipe 208 is connected to the adsorption fan 9, and the adsorption fan 9 is connected to the chimney 10 through a pipe; the seventh pipe 207 is equipped with a second adsorption valve 8.

[0030] The twelfth pipe 212 is connected to the eighth pipe 208, and the twelfth pipe 212 is equipped with an overheat direct discharge valve 16;

[0031] The fifth pipe 205 of each of the multiple activated carbon adsorption boxes 6 is connected to the sixth pipe 206. The fifth pipe 205 is equipped with a first desorption valve 4. The sixth pipe 206 is connected to the tenth pipe 210.

[0032] The third pipe 203 of multiple activated carbon adsorption boxes 6 is connected to the second pipe 202. The third pipe 203 is equipped with a cooling spray valve 3 and extends into the interior of the activated carbon adsorption box 6 and is equipped with a spray head.

[0033] The working principle of this utility model is as follows: Filter 2 is equipped with a G4 filter, an F7 filter, and an F9 filter in sequence. All three filters are bag filters. The waste gas dust has characteristics such as small particle size and low content, with most particles below 10μm. If this waste gas directly enters the activated carbon for adsorption, it will cause blockage of the activated carbon micropores, ultimately leading to activated carbon deactivation. Therefore, the waste gas must be filtered before entering the subsequent adsorption stage. Through physical filtration, particles of different sizes are filtered out and retained in the pretreatment equipment. After pretreatment, the organic waste gas is introduced into the adsorption unit under the action of a fan, where it is evenly distributed on the surface of the activated carbon. Relying on the complex internal structure and ultra-large surface area of ​​the activated carbon, the activated carbon adsorbs the organic waste gas onto its surface. This process is relatively short, but the longer the time, the more thorough the adsorption. Furthermore, no chemical reaction occurs between the two, thus achieving the purification effect of the organic waste gas.

[0034] Once the activated carbon in the adsorption chamber reaches saturation, it switches to the desorption unit. Desorption requires external heating, which is located inside the combustion furnace. When the furnace is turned on, the catalyst is preheated simultaneously. After the combustion furnace reaches the set temperature, hot air is introduced into the desorption bed, and the organic waste gas is desorbed from the surface of the activated carbon under heating. Because temperature changes the internal structure of the activated carbon, thermocouple temperature sensors are installed in both the adsorption and desorption units. If the temperature is too high, the cooling air system is adjusted promptly to ensure optimal desorption and provide a safe working environment for the activated carbon. Even if the temperature sensor malfunctions, the adsorption unit is equipped with physical fire suppression systems. High-concentration organic waste gas enters the combustion furnace under the action of the desorption fan. Under the catalytic action of the precious metal platinum alloy, it is burned and decomposed into water and carbon dioxide, thus purifying the waste gas. This combustion process is low-temperature, rapid, and flameless, generating a large amount of heat that can be reused in the desorption and combustion oxidation processes of the organic waste gas, thus significantly reducing energy consumption costs.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An organic waste gas treatment system, characterized in that: Includes a filter (2), a catalytic reactor (14) and multiple activated carbon adsorption boxes (6). The outlet end of the filter (2) is connected to a first pipe (201). The first pipe (201) is connected to the fourth pipe (204) of the multiple activated carbon adsorption boxes (6). The fourth pipe (204) is equipped with a first adsorption air valve (5). It also includes a tenth pipe (210), which is connected to a desorption fan (12), which is connected to a catalytic reactor (14) via a pipe, and the catalytic reactor (14) is connected to the twelfth pipe (212), the thirteenth pipe (213) and the fifteenth pipe (215) via the eleventh pipe (211); The other end of the fifteenth pipe (215) is connected to the tenth pipe (210), and an internal circulation valve (19) is installed in the middle of the fifteenth pipe (215); The thirteenth pipe (213) is connected to the fourteenth pipe (214) and the ninth pipe (209) of the activated carbon adsorption box (6), respectively. The ninth pipe (209) is equipped with a second desorption air valve (7); the fourteenth pipe (214) is equipped with a supplementary cooling air valve (17) and a supplementary cooling air fan (18) in sequence. The seventh pipe (207) of multiple activated carbon adsorption boxes (6) is connected to the eighth pipe (208), the eighth pipe (208) is connected to the adsorption fan (9), and the seventh pipe (207) is equipped with a second adsorption air valve (8); The twelfth pipe (212) is connected to the eighth pipe (208), and the twelfth pipe (212) is equipped with an overheating direct discharge valve (16); The fifth pipe (205) of each of the multiple activated carbon adsorption boxes (6) is connected to the sixth pipe (206), the fifth pipe (205) is equipped with a first desorption valve (4), and the sixth pipe (206) is connected to the tenth pipe (210).

2. The organic waste gas treatment system according to claim 1, characterized in that: The third pipe (203) of multiple activated carbon adsorption boxes (6) is connected to the second pipe (202). The third pipe (203) is equipped with a cooling spray valve (3) and extends into the activated carbon adsorption box (6) and is equipped with a spray head.

3. The organic waste gas treatment system according to claim 1, characterized in that: The adsorption fan (9) is connected to a chimney (10) via a pipe; a desorption fresh air valve (11) is installed at one end of the tenth pipe (210).

4. The organic waste gas treatment system according to claim 1, characterized in that: The filter (2) has an air inlet pipe installed at one end, and the air inlet pipe is equipped with an air inlet valve (1).

5. The organic waste gas treatment system according to claim 1, characterized in that: A first dust removal flame arrester (13) is installed in the middle of the pipe between the desorption fan (12) and the catalytic reactor (14), and a second dust removal flame arrester (15) is installed at one end of the eleventh pipe (211) located in the catalytic reactor (14).

6. The organic waste gas treatment system according to claim 1, characterized in that: The filter (2) is equipped with a G4 filter, an F7 filter and an F9 filter in sequence, and the G4 filter, F7 filter and F9 filter are all bag filters.

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