Pyromellitic dianhydride tail gas absorption device

Abstract

The utility model provides a pyromellitic dianhydride tail gas absorption device, which belongs to the technical field of gas treatment and comprises a reaction tank and a filtering tank, a tail gas leading-in mechanism is arranged on the reaction tank, a drainage mechanism is connected between the reaction tank and the filtering tank, and a filtering mechanism is arranged on the filtering tank. Waste gas is guided into the reaction tank and guided out through the rotating gas storage box, so that the waste gas fully reacts with a chemical reagent in the reaction tank, harmful substances in the waste gas are absorbed, and gas at the top of the reaction tank is guided into the filtering tank through the drainage mechanism; the waste gas is further purified through the filter material laid on the filter tank and the treatment liquid sprayed from the top, so that the dissolution, neutralization or chemical reaction of the harmful gas is further promoted, and deep purification is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of gas treatment, in particular to a homogenized anhydride tail gas absorption device. Background Art

[0002] Pyromellitic anhydride, also known as pyromellitic anhydride, is an organic compound with the chemical formula C6H4(CO)4O2. It is primarily used in the production of polyimide resins, epoxy resin curing agents, pharmaceutical intermediates, dyes, and pesticides. It is a cyclic anhydride produced by the dehydration reaction of pyromellitic acid and contains two carboxylic anhydride groups. In industrial production, pyromellitic anhydride is an important chemical raw material, widely used in high-performance materials due to its unique chemical properties and thermal stability. For example, polyimide resins synthesized from pyromellitic anhydride exhibit excellent high-temperature resistance, mechanical strength, and dielectric properties, and are commonly used in industries such as aerospace, microelectronics, thin films, and composite materials.

[0003] However, the production process of homogenized anhydrides often releases exhaust gases containing various harmful components. These gases require purification through specialized treatment equipment to reduce environmental pollution and comply with environmental protection standards. Traditional exhaust gas treatment methods rely on chemical adsorption, but when a single treatment method fails to fully treat homogenized anhydride exhaust gases, these untreated exhaust gases, when discharged, can cause serious environmental pollution and pose a health threat to nearby residents. Utility Model Content

[0004] In view of this, the utility model provides a homogenized anhydride tail gas absorption device, which introduces the exhaust gas into a reaction tank and conducts drainage through a rotating gas storage box, so that the exhaust gas can fully react with the chemical reagents in the reaction tank and absorb the harmful substances inside. The gas at the top of the reaction tank is introduced into the filter tank through a drainage mechanism, and the exhaust gas is further purified by the filter material laid on the filter tank and the treatment liquid sprayed from the top, thereby further promoting the dissolution, neutralization or chemical reaction of the harmful gas and completing deep purification.

[0005] In order to solve the above technical problems, the utility model provides a homogenized anhydride tail gas absorption device, comprising a reaction tank and a filter tank, the reaction tank is provided with a tail gas introduction mechanism, a drainage mechanism is connected between the reaction tank and the filter tank, and the filter tank is provided with a filtering mechanism;

[0006] The tail gas introduction mechanism includes a rotating motor arranged on the reaction tank and a rotating shaft arranged in the reaction tank, a main gear is connected to the output shaft of the rotating motor, an air storage box is fixedly provided at the bottom of the rotating shaft, an air outlet is provided on the air storage box, and a connecting component connected to the rotating motor is connected to the top of the rotating shaft; the drainage mechanism includes an air pump, and the air pump is respectively provided with an air extraction pipe and an air supply pipe; the filtering mechanism includes a storage table arranged on the side wall of the filter tank and a storage rack arranged in the filter tank, the hollow rotating shaft is driven to rotate by the rotating motor, and the rotating joint on the top is connected to the exhaust gas inlet, so that the exhaust gas passes through the hollow rotating shaft into the air storage box connected to the rotating shaft for discharge, and is fully reacted with the chemical reagent in the reaction tank through rotation, thereby reducing harmful substances in the anhydride tail gas.

[0007] The connecting assembly includes a guide ring arranged on the top of the reaction tank, a rotating shaft sleeve arranged in the guide ring, a sub-gear arranged on the rotating shaft, a rotating joint connected to the top end of the rotating shaft, and an exhaust gas inlet connected to the rotating joint. The rotating joint ensures that when the rotating shaft rotates, the exhaust gas can be introduced into the gas storage box at the bottom of the rotating shaft to ensure gas circulation.

[0008] The secondary gear is meshed with the main gear and is used for the rotary motor to drive the rotating shaft to rotate. The meshing of the secondary gear and the main gear ensures the stable transmission of the rotating power.

[0009] One end of the exhaust pipe is connected to the top of the reaction tank, and the other end is connected to the input end of the exhaust fan. One end of the air supply pipe is connected to the output end of the exhaust fan, and the other end is connected to the bottom of the filter tank. The exhaust fan extracts the exhaust gas from the top of the reaction tank through the exhaust pipe, and sends the treated gas to the bottom of the filter tank through the air supply pipe to realize effective gas transmission.

[0010] A liquid storage tank is provided on the storage table, and a high-pressure water machine is provided on one side of the liquid storage tank. A liquid supply pipe is connected between the input end of the high-pressure water machine and the high-pressure water machine, and a high-pressure water pipe is connected to the output end of the high-pressure water machine. The tail end of the high-pressure water pipe is connected to a negative pressure water pipe, and the negative pressure water pipe is provided on the top surface of the filter tank. A number of nozzles are provided on the negative pressure water pipe. A filter tank is fixed on the storage rack, and the filter tank is used to lay filter materials. A storage table and a storage rack are provided in the filter tank, and filter materials are laid on the storage rack to purify the gas. A liquid storage tank and a high-pressure water machine are also provided on the storage table to provide cleaning or treatment liquids to enhance the exhaust gas treatment effect.

[0011] In summary, compared with the prior art, this application has at least one of the following beneficial technical effects:

[0012] 1. The gas storage box at the bottom of the rotating shaft rotates and uses centrifugal force to release the exhaust gas through the air outlet on the gas storage box, so that the exhaust gas entering the reaction tank can fully react with the chemical reagents to ensure the absorption of harmful substances.

[0013] 2. The vacuum pump extracts the tail gas from the top of the reaction tank through the exhaust pipe, and sends the treated gas to the bottom of the filter tank through the gas supply pipe to achieve effective gas transmission.

[0014] 3. A storage table and a shelf are set up in the filter tank. Filter materials are laid on the shelf to purify the gas. A liquid storage tank and a high-pressure water machine are also set on the storage table to provide cleaning or processing liquid to enhance the exhaust gas treatment effect.

[0015] 4. The high-pressure water machine supplies liquid to the nozzle on the top of the filter tank through the high-pressure water pipe and the negative pressure water pipe to form a spray effect, which helps to further dissolve or react the harmful components in the exhaust gas. After the treatment work is completed, clean water can be added to the liquid storage tank to clean the filter material. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the utility model's homogenized anhydride tail gas absorption device;

[0017] Figure 2 This is a schematic diagram of the internal structure of the reaction tank in the present utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the filter tank in the present utility model;

[0019] Figure 4 for Figure 3 A magnified schematic diagram of the structure at center A;

[0020] Figure 5 It is a structural schematic diagram of the drainage mechanism in the utility model.

[0021] Explanation of the accompanying reference numerals: 1. Reaction tank; 11. Exhaust gas introduction mechanism; 111. Rotating motor; 112. Rotating shaft; 113. Main gear; 114. Air storage box; 115. Air outlet; 12. Connecting assembly; 121. Guide ring; 122. Sub-gear; 123. Rotary joint; 124. Exhaust gas inlet; 2. Drainage mechanism; 21. Vacuum pump; 22. Air supply pipe; 23. Air exhaust pipe; 3. Filter tank; 31. Filter mechanism; 311. Storage table; 312. Storage rack; 313. High-pressure water machine; 314. Liquid supply pipe; 315. High-pressure water pipe; 316. Negative-pressure water pipe; 317. Nozzle; 318. Filter tank; 319. Liquid storage tank. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiment of the present invention clearer, the following will be combined with the appended drawings of the embodiment of the present invention. Figure 1-5, clearly and completely describing the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field fall within the scope of protection of the present invention.

[0023] like Figure 1-5 As shown: This embodiment provides a device for absorbing tail gas from a homogeneous anhydride, comprising a reaction tank 1 and a filter tank 3. The reaction tank 1 is provided with a tail gas introduction mechanism 11, a drainage mechanism 2 is connected between the reaction tank 1 and the filter tank 3, and the filter tank 3 is provided with a filtering mechanism 31;

[0024] The exhaust gas introduction mechanism 11 includes a rotating motor 111 arranged on the reaction tank 1 and a rotating shaft 112 arranged in the reaction tank 1. A main gear 113 is connected to the output shaft of the rotating motor 111. An air storage box 114 is fixed to the bottom of the rotating shaft 112. An air outlet 115 is provided on the air storage box 114. A connecting component 12 connected to the rotating motor 111 is connected to the top of the rotating shaft 112; the drainage mechanism 2 includes an exhaust fan 21, and an exhaust pipe 23 and an air supply pipe 22 are respectively provided on the exhaust fan 21; the filtering mechanism 31 includes a storage platform 311 arranged on the side wall of the filter tank 3 and a storage rack 312 arranged in the filter tank 3.

[0025] According to one embodiment of the present invention, Figure 2 As shown, the connecting assembly 12 includes a guide ring 121 arranged on the top of the reaction tank 1, the rotating shaft 112 is sleeved in the guide ring 121, and the rotating shaft 112 is also sleeved with a sub-gear 122. The top of the rotating shaft 112 is connected with a rotating joint 123, and the rotating joint 123 is connected with a waste inlet. The sub-gear 122 is meshed with the main gear 113 and is used for the rotating motor 111 to drive the rotating shaft 112 to rotate.

[0026] In one embodiment of the present invention, Figure 3-4 A liquid storage tank 319 is provided on the storage table 311 shown, and a high-pressure water machine 313 is provided on one side of the liquid storage tank 319. A liquid supply pipe 314 is connected between the input end of the high-pressure water machine 313 and the high-pressure water machine 313. A high-pressure water pipe 315 is connected to the output end of the high-pressure water machine 313, and a negative pressure water pipe 316 is connected to the tail end of the high-pressure water pipe 315. The negative pressure water pipe 316 is arranged on the top surface of the filter tank 3, and a plurality of nozzles 317 are provided on the negative pressure water pipe 316. A filter tank 318 is fixedly provided on the storage rack 312, and the filter tank 318 is used to lay filter materials.

[0027] In another embodiment of the present invention, Figure 5As shown, one end of the exhaust pipe 23 is connected to the top of the reaction tank 1, and the other end is connected to the input end of the exhaust fan 21; one end of the air supply pipe 22 is connected to the output end of the exhaust fan 21, and the other end is connected to the bottom of the filter tank 3.

[0028] The method of using the present invention is as follows: the exhaust gas is introduced into the gas storage box 114 through the exhaust gas inlet 124 and the rotary joint 123, and is discharged into the interior of the reaction tank 1 through the air outlet 115. After the harmful substances in the exhaust gas are absorbed by the chemical reagent, the gas accumulates on the top of the reaction tank 1, and then the gas is extracted to the bottom of the filter tank 3 through the vacuum pump 21. When the gas rises and passes through the filter tank 318, the filter material in the filter tank 318 further absorbs other substances in the exhaust gas, and evenly sprays the treatment liquid through the multiple nozzles 317 on the negative pressure water pipe 316, which contacts the rising gas, further promoting the dissolution, neutralization or chemical reaction of the harmful gas, and completing deep purification.

[0029] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0030] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A device for absorbing tail gas from anhydrous anhydride, comprising a reaction tank (1) and a filter tank (3), characterized in that: The reaction tank (1) is provided with an exhaust gas introduction mechanism (11), a drainage mechanism (2) is connected between the reaction tank (1) and the filter tank (3), and the filter tank (3) is provided with a filtering mechanism (31); The tail gas introduction mechanism (11) comprises a rotating motor (111) arranged on the reaction tank (1) and a rotating shaft (112) arranged in the reaction tank (1); a main gear (113) is connected to the output shaft of the rotating motor (111); an air storage box (114) is fixedly provided at the bottom of the rotating shaft (112); an air outlet (115) is provided on the air storage box (114); a connecting assembly (12) connected to the rotating motor (111) is connected to the top of the rotating shaft (112); the drainage mechanism (2) comprises an air pump (21); an air pump (23) and an air supply pipe (22) are respectively provided on the air pump (21); and the filtering mechanism (31) comprises a storage platform (311) arranged on the side wall of the filtering tank (3) and a storage rack (312) arranged in the filtering tank (3).

2. The device for absorbing tail gas from anhydrous anhydride according to claim 1, wherein: The connecting assembly (12) comprises a guide ring (121) arranged on the top of the reaction tank (1); the rotating shaft (112) is sleeved in the guide ring (121); a sub-gear (122) is sleeved on the rotating shaft (112); a rotating joint (123) is connected to the top end of the rotating shaft (112); and an exhaust gas inlet (124) is connected to the rotating joint (123).

3. The device for absorbing tail gas from a homogenized anhydride according to claim 2, wherein: The secondary gear (122) is meshedly connected with the main gear (113) and is used for the rotary motor (111) to drive the rotary shaft (112) to rotate.

4. The device for absorbing tail gas from anhydride as claimed in claim 1, wherein: One end of the exhaust pipe (23) is connected to the top of the reaction tank (1), and the other end is connected to the input end of the exhaust fan (21); one end of the air supply pipe (22) is connected to the output end of the exhaust fan (21), and the other end is connected to the bottom of the filter tank (3).

5. The device for absorbing tail gas from a homogenized anhydride according to claim 1, wherein: A liquid storage tank (319) is provided on the storage platform (311), a high-pressure water machine (313) is provided on one side of the liquid storage tank (319), and a liquid supply pipe (314) is connected between the input end of the high-pressure water machine (313) and the high-pressure water machine (313).

6. The device for absorbing tail gas from a homogenized anhydride according to claim 5, wherein: The output end of the high-pressure water machine (313) is connected to a high-pressure water pipe (315), the tail end of the high-pressure water pipe (315) is connected to a negative-pressure water pipe (316), the negative-pressure water pipe (316) is arranged on the top surface of the filter tank (3), and a plurality of nozzles (317) are provided on the negative-pressure water pipe (316).

7. The device for absorbing tail gas from a homogenized anhydride according to claim 1, wherein: A filter tank (318) is fixedly provided on the storage rack (312), and the filter tank (318) is used for laying filter materials.

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