A distillation kettle for diphenyl ethane production

Abstract

The utility model discloses a distillation kettle for diphenylmethane production, including distillation kettle body and base plate, the distillation kettle body top one side is installed with waste gas pipe, install the transfer pipe on the waste gas pipe, install cooling liquid tank on the transfer pipe, transfer pipe bottom end is connected with the gas -liquid separation tank top surface one end fixedly, install the baffle in the gas -liquid separation tank one side inner wall middle part, the gas -liquid separation tank bottom surface other end fixed mounting of baffle below is installed with exhaust pipe, the gas -liquid separation tank other side bottom is installed with the liquid discharge pipe, exhaust pipe bottom end is connected with the adsorption tank top end. This distillation kettle for diphenylmethane production adopts novel structure design, not only can effectively condense recovery volatile organic compounds, but also can carry out efficient adsorption retention to solid particle impurities, and adsorption retention mechanism can conveniently dismantle cleaning, and set up the harmless incineration mechanism, and the influence of tail gas to surrounding environment is reduced greatly.

Description

Technical Field

[0001] This utility model relates to the field of distillation kettle technology, specifically a distillation kettle for the production of diphenyl ethane. Background Technology

[0002] In the production process of diphenyl ethane, the distillation vessel is a key piece of equipment for separating and purifying the product. It can separate diphenyl ethane from reaction byproducts through distillation, recover the solvents used in the production process, and reduce the operating temperature by vacuum distillation to avoid thermal decomposition.

[0003] Existing distillation kettles used in diphenyl ethane production lack tail gas treatment devices. The tail gas emitted during the diphenyl ethane production process contains volatile organic compounds and solid particulate impurities, which can negatively impact the environment. Therefore, innovative designs are urgently needed to address these issues based on existing distillation kettles used in diphenyl ethane production. Summary of the Invention

[0004] The purpose of this invention is to provide a distillation kettle for diphenyl ethane production, in order to solve the problem mentioned in the background art that the existing distillation kettles for diphenyl ethane production do not have a tail gas treatment device, and the tail gas discharged during the diphenyl ethane production process contains volatile organic compounds and solid particulate impurities, which will have an impact on the environment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a distillation kettle for diphenyl ethane production, comprising a distillation kettle body and a base plate. A waste gas pipe is installed on one side of the top of the distillation kettle body, a transfer pipe is installed on the waste gas pipe, a coolant tank is installed on the transfer pipe, and the bottom end of the transfer pipe is connected and fixed to one end of the top surface of a gas-liquid separation box. A baffle plate is installed in the middle of the inner wall of one side of the gas-liquid separation box, and an exhaust pipe is fixedly installed at the other end of the bottom surface of the gas-liquid separation box below the baffle plate. A drain pipe is installed at the bottom of the other side of the gas-liquid separation box, and the bottom end of the exhaust pipe is connected to the top of an adsorption box. A side cover plate is installed on one side of the adsorption box, a first partition plate is fixed on the inner side of the side cover plate, and a second partition plate is fixed on the inner wall of the adsorption box opposite to the inner side of the side cover plate. Activated carbon is disposed inside the adsorption box, and a discharge pipe is installed at the bottom of the side cover plate.

[0006] Preferably, the frontal cross-sectional width of the coolant tank is greater than three times the diameter of the transfer pipe, and the length of the coolant tank is greater than three-quarters of the vertical length of the transfer pipe.

[0007] Preferably, the bottom inner surface of the gas-liquid separator is set as an inclined surface, and the top of the inclined surface at the bottom of the gas-liquid separator is lower than the top of the exhaust pipe.

[0008] Preferably, the first partition is symmetrically distributed about the center of the second partition, the front view section length of the first partition is the same as that of the second partition, and the front view section length of the first partition is less than that of the adsorption box.

[0009] Preferably, a support frame is fixed to the other end of the substrate, a gas pipe is installed on the support frame, and nozzles are installed at equal intervals on the top of the gas pipe.

[0010] Preferably, the gas pipes are evenly distributed on the substrate, and the center of the substrate and the center of the exhaust pipe are on the same vertical plane.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the distillation kettle for diphenyl ethane production adopts a novel structural design, which can not only effectively condense and recover volatile organic compounds, but also efficiently adsorb and retain solid particulate impurities. Furthermore, the adsorption and retention mechanism can be easily disassembled and cleaned, and a harmless incineration mechanism is set up, which greatly reduces the impact of exhaust gas on the surrounding environment.

[0012] 1. The volatile organic compounds in the exhaust gas are cooled by the coolant tank, and the condensed volatile organic compounds and exhaust gas are separated and discharged through the structural design of the gas-liquid separator, baffle, exhaust pipe and drain pipe, which facilitates the subsequent treatment of the condensed volatile organic compounds and exhaust gas.

[0013] 2. The space inside the adsorption box is divided by the first and second partitions, which increases the contact time between the exhaust gas and the activated carbon in the adsorption box, improves the adsorption effect on solid particulate impurities, and the exhaust gas discharged from the exhaust pipe is harmlessly incinerated by igniting the gas sprayed from the nozzle on the gas pipe, which greatly reduces the pollution of the exhaust gas to the environment. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention;

[0015] Figure 2 This is a front view cross-sectional structural diagram of the coolant tank and gas-liquid separator of this utility model;

[0016] Figure 3 This is a front view cross-sectional structural diagram of the adsorption box of this utility model;

[0017] Figure 4 This is a bottom view of the gas pipe and nozzle structure of this utility model.

[0018] In the diagram: 1. Distillation vessel body; 2. Waste gas pipe; 3. Transfer pipe; 4. Coolant tank; 5. Gas-liquid separator; 6. Baffle plate; 7. Exhaust pipe; 8. Drain pipe; 9. Adsorption box; 10. Side cover plate; 11. First partition plate; 12. Second partition plate; 13. Activated carbon; 14. Discharge pipe; 15. Substrate; 16. Support frame; 17. Gas pipe; 18. Nozzle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a distillation kettle for diphenyl ethane production, comprising a distillation kettle body 1, a waste gas pipe 2, a transfer pipe 3, a coolant tank 4, a gas-liquid separation box 5, a baffle plate 6, an exhaust pipe 7, a drain pipe 8, an adsorption box 9, a side cover plate 10, a first partition plate 11, a second partition plate 12, activated carbon 13, a discharge pipe 14, a base plate 15, a support frame 16, a gas combustion pipe 17, and a nozzle 18. A waste gas pipe 2 is installed on one side of the top of the distillation kettle body 1, a transfer pipe 3 is installed on the waste gas pipe 2, a coolant tank 4 is installed on the transfer pipe 3, and the bottom end of the transfer pipe 3 is connected to the gas-liquid separation box. One end of the top surface of the separation box 5 is fixedly connected. A baffle plate 6 is installed in the middle of the inner wall of one side of the gas-liquid separation box 5. An exhaust pipe 7 is fixedly installed at the other end of the bottom surface of the gas-liquid separation box 5 below the baffle plate 6. A drain pipe 8 is installed at the bottom of the other side of the gas-liquid separation box 5. The bottom end of the exhaust pipe 7 is connected to the top of the adsorption box 9. A side cover plate 10 is installed on one side of the adsorption box 9. A first partition plate 11 is fixed on the inner side of the side cover plate 10. A second partition plate 12 is fixed on the inner wall of the adsorption box 9 opposite to the inner side of the side cover plate 10. Activated carbon 13 is placed inside the adsorption box 9. A discharge pipe 14 is installed at the bottom of the side cover plate 10.

[0021] The frontal cross-sectional width of the coolant tank 4 is more than three times the diameter of the transfer pipe 3, and the length of the coolant tank 4 is more than 3 / 4 of the vertical length of the transfer pipe 3. The above structural design ensures that the coolant tank 4 has sufficient internal space and sufficient overall length, which can fully cool the exhaust gas in the transfer pipe 3.

[0022] The bottom inner side of the gas-liquid separator 5 is set as an inclined surface, and the top of the inclined surface at the bottom of the gas-liquid separator 5 is lower than the top of the exhaust pipe 7. The above structural design can prevent the liquid generated by condensation from entering the exhaust pipe 7, thereby achieving gas-liquid separation.

[0023] The first partition 11 is symmetrically distributed about the center of the second partition 12. The frontal cross-sectional length of the first partition 11 is the same as that of the second partition 12. The frontal cross-sectional length of the first partition 11 is less than that of the adsorption box 9. The above structural design enables the first partition 11 and the second partition 12 to efficiently separate the space inside the adsorption box 9. The gas can only flow along a continuous "S" shaped path, allowing the gas to fully contact the activated carbon 13.

[0024] A support frame 16 is fixed to the other end of the substrate 15. A gas pipe 17 is installed on the support frame 16. Nozzles 18 are installed at equal intervals on the top of the gas pipe 17. The above structural design can utilize gas combustion to perform harmless incineration treatment of exhaust gas.

[0025] The gas pipes 17 are evenly distributed on the substrate 15, and the center of the substrate 15 and the center of the exhaust pipe 14 are on the same vertical plane. The above structural design enables the exhaust gas discharged from the exhaust pipe 14 to be fully heated and burned after the gas pipes 17 are sprayed through the nozzles 18.

[0026] Working principle: When the distillation vessel body 1 is working, the exhaust gas enters the transfer pipe 3 through the exhaust pipe 2. When the exhaust gas passes through the coolant tank 4, the coolant tank 4 is filled with coolant, and the external coolant pump continuously pumps in new coolant. The coolant that absorbs heat continues to flow out, which efficiently condenses the volatile organic compounds contained in the exhaust gas in the transfer pipe 3.

[0027] Subsequently, the condensed volatile organic compounds from Figure 2 The gas drips from the bottom of the transfer tube 3 and falls to the bottom of the gas-liquid separation box 5. It accumulates at the bottom of the gas-liquid separation box 5 and flows through the inclined bottom surface of the gas-liquid separation box 5. It is discharged from the drain pipe 8. The gas enters the adsorption box 9 from the exhaust pipe 7 and moves downward along the continuous "S" shaped path separated by the first partition 11 and the second partition 12. It comes into full contact with the activated carbon 13, and the activated carbon 13 adsorbs the solid particulate impurities.

[0028] Finally, the gas is discharged through the exhaust pipe 14. The gas is introduced through the gas pump connected to the gas pipe 17 and discharged through the nozzle 18. The gas is then ignited by the ignition mechanism installed next to the gas pipe 17. The combustion of the gas completely and harmlessly incinerates the exhaust gas discharged from the exhaust pipe 14. This is the working principle of the distillation kettle used for the production of diphenyl ethane.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A distillation vessel for diphenyl ethane production, comprising a distillation vessel body (1) and a substrate (15), characterized in that: A waste gas pipe (2) is installed on one side of the top of the distillation vessel body (1). A transfer pipe (3) is installed on the waste gas pipe (2). A coolant tank (4) is installed on the transfer pipe (3). The bottom end of the transfer pipe (3) is connected and fixed to one end of the top surface of the gas-liquid separator (5). A baffle plate (6) is installed in the middle of the inner wall of one side of the gas-liquid separator (5). An exhaust pipe (7) is fixedly installed at the other end of the bottom surface of the gas-liquid separator (5) below the baffle plate (6). A drain pipe (8) is installed on the bottom of the other side. The bottom end of the exhaust pipe (7) is connected to the top of the adsorption box (9). A side cover plate (10) is installed on one side of the adsorption box (9). A first partition plate (11) is fixed on the inner side of the side cover plate (10). A second partition plate (12) is fixed on the inner wall of the adsorption box (9) opposite to the inner side of the side cover plate (10). Activated carbon (13) is provided inside the adsorption box (9). A drain pipe (14) is installed at the bottom of the side cover plate (10).

2. The distillation kettle for diphenyl ethane production according to claim 1, characterized in that: The frontal cross-sectional width of the coolant tank (4) is greater than three times the diameter of the transfer pipe (3), and the length of the coolant tank (4) is greater than 3 / 4 of the vertical length of the transfer pipe (3).

3. The distillation kettle for diphenyl ethane production according to claim 1, characterized in that: The bottom inner side of the gas-liquid separator (5) is set as an inclined surface, and the top of the inclined surface at the bottom of the gas-liquid separator (5) is lower than the top of the exhaust pipe (7).

4. The distillation kettle for diphenyl ethane production according to claim 1, characterized in that: The first partition (11) is symmetrically distributed about the center of the second partition (12). The frontal section length of the first partition (11) is the same as that of the second partition (12). The frontal section length of the first partition (11) is less than that of the adsorption box (9).

5. A distillation kettle for diphenyl ethane production according to claim 1, characterized in that: A support frame (16) is fixed at the other end of the substrate (15), and a gas pipe (17) is installed on the support frame (16). Nozzles (18) are installed at equal intervals on the top of the gas pipe (17).

6. The distillation kettle for diphenyl ethane production according to claim 5, characterized in that: The gas pipes (17) are evenly distributed on the substrate (15), and the center of the substrate (15) and the center of the discharge pipe (14) are on the same vertical plane.

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