Coal-to-dimethyl oxalate tail gas purification and recovery device

Abstract

The utility model relates to the technical field of tail gas purification and recovery, and discloses a coal dimethyl oxalate tail gas purification and recovery device which comprises a bottom plate, one end of the top of the bottom plate is fixedly connected with a pressure pump, and the output end of one side of the pressure pump is fixedly connected with a buffer tank. According to the coal-to-dimethyl oxalate tail gas purification and recovery device, through mutual cooperation of the structures, coal-to-dimethyl oxalate tail gas can be efficiently purified and recovered, the resource utilization efficiency is remarkably improved, and the coal-to-dimethyl oxalate tail gas purification and recovery device is more convenient to produce and use in batches and is more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas purification and recovery, in particular to a tail gas purification and recovery device for dimethyl oxalate made from coal. Background Art

[0002] As the global awareness of environmental protection increases, countries have increasingly stringent requirements for waste gas emissions in industrial production. The tail gas produced during the production of dimethyl oxalate from coal contains a variety of harmful substances. If it is directly discharged without effective treatment, it will have a serious impact on the environment and human health. Therefore, it is urgent to develop an efficient tail gas purification and recovery device. During the production of dimethyl oxalate from coal, the tail gas contains not only harmful substances but also some valuable components. Through effective purification and recovery technology, these components can be recycled to improve resource utilization efficiency and reduce production costs.

[0003] Traditional coal-based dimethyl oxalate tail gas purification and recovery devices usually use simple filtering or adsorption methods, which have limited effects on the removal of harmful substances in tail gas. Especially for coal-based dimethyl oxalate tail gas, which has complex components and high content of harmful substances, traditional coal-based dimethyl oxalate tail gas purification and recovery devices ignore the recycling of valuable components in tail gas. This leads to the waste of a large amount of recyclable resources, increasing production costs and environmental burdens.

[0004] In order to solve the above problems, when purifying and recovering the tail gas of dimethyl oxalate produced from coal, it can be efficiently purified and recovered through the internal structure of the high-efficiency purification mechanism, which significantly improves the resource utilization efficiency and is more convenient for mass production. For this reason, we propose a tail gas purification and recovery device for dimethyl oxalate produced from coal. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a tail gas purification and recovery device for dimethyl oxalate produced from coal, which solves the above-mentioned problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal-based dimethyl oxalate tail gas purification and recovery device, comprising a bottom plate, one end of the top of the bottom plate is fixedly connected to a pressure pump, one output end of the pressure pump is fixedly connected to a buffer tank, and the output end of the buffer tank away from the pressure pump is fixedly connected to an input head, and also includes:

[0009] A high-efficiency purification mechanism is fixedly connected to one end of the top of the base plate. The high-efficiency purification mechanism is provided with a filter cartridge and a second filter cartridge. The high-efficiency purification mechanism performs high-efficiency filtration and purification on the liquefied tail gas through the filter cartridge and the second filter cartridge, supports the recycling and utilization of the production process, and greatly improves environmental protection.

[0010] Preferably, a condensation box is fixedly connected to the top of the base plate near the pressure pump, a condensation tube is fixedly connected to one end of the inner wall of the condensation box, a connecting tube is fixedly connected to the output end of one side of the top, and the output end of the connecting tube away from the pressure pump is fixedly connected to the output end of one end of the condensation tube, a condensation fan is fixedly connected to the outer wall of one side of the condensation box, a support plate is fixedly connected to the top of the base plate near the pressure pump, and a fixed vertical plate is fixedly connected to the top of the support plate.

[0011] Preferably, the high-efficiency purification mechanism includes an output pipe, a second pressure pump, a reaction tank, a second connecting pipe, a shunt pipe, a filter cartridge, and a second filter cartridge. The top output end of the condenser tube is fixedly connected with the output pipe, and the output end of the output pipe away from the condenser tube is fixedly connected with the second pressure pump, the outer wall of one side of the fixed vertical plate is fixedly connected with the reaction tank, the bottom output end of the second pressure pump is fixedly connected with the second connecting pipe, the output end of the second connecting pipe away from the second pressure pump is fixedly connected to the output end of one end of the reaction tank, and the output end of the reaction tank away from the second connecting pipe is fixedly connected with the shunt pipe, the outer wall of the fixed vertical plate away from the reaction tank is fixedly connected with the filter cartridge, the outer wall of the fixed vertical plate close to the filter cartridge is fixedly connected with the second filter cartridge, the output end of the top end of the shunt pipe is fixedly connected to the top output end of the filter cartridge, and the output end of the shunt pipe away from the filter cartridge is fixedly connected to the top output end of the second filter cartridge.

[0012] Preferably, the high-efficiency purification mechanism also includes a third connecting pipe, a fourth connecting pipe, a converging pipe, and an output valve. The third connecting pipe is fixedly connected to the bottom output end of the filter cartridge, the fourth connecting pipe is fixedly connected to the bottom output end of the second filter cartridge, and the output ends of the third connecting pipe and one end of the fourth connecting pipe pass through the bottom of the fixed vertical plate, the output ends of the third connecting pipe and one end of the fourth connecting pipe are fixedly connected to the converging pipe, and the output end of the converging pipe away from the third connecting pipe and the fourth connecting pipe is fixedly connected to the output valve.

[0013] Preferably, activated carbon is used for purification and adsorption inside the filter cartridge and the second filter cartridge.

[0014] Preferably, the high-efficiency purification mechanism is made entirely of stainless steel.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a tail gas purification and recovery device for dimethyl oxalate from coal, which has the following beneficial effects:

[0017] 1. The tail gas purification and recovery device of dimethyl oxalate from coal adopts a high-efficiency purification mechanism, including a filter cartridge and a second filter cartridge. Activated carbon is used for purification and adsorption inside, which can effectively remove harmful substances and impurities in the tail gas, has high purification efficiency, and meets strict environmental protection requirements.

[0018] 2. The tail gas purification and recovery device for dimethyl oxalate produced from coal separates and recovers useful components in the tail gas through steps such as condensation, reaction and filtration, thereby improving resource utilization efficiency and reducing production costs.

[0019] 3. The coal-based dimethyl oxalate tail gas purification and recovery device has an efficient purification mechanism made entirely of stainless steel, which has good corrosion resistance and durability, and can ensure the long-term stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 This is a schematic diagram of the high-efficiency purification mechanism of the utility model;

[0022] Figure 3 It is a side view schematic diagram of the high-efficiency purification mechanism of the utility model.

[0023] In the figure: 1. bottom plate; 2. booster pump; 3. buffer tank; 4. input head; 5. condenser box; 6. condenser pipe; 7. connecting pipe; 8. condenser fan; 9. support plate; 10. fixed vertical plate; 11. output pipe; 12. second booster pump; 13. reaction tank; 14. second connecting pipe; 15. diverter pipe; 16. filter cartridge; 17. second filter cartridge; 18. third connecting pipe; 19. fourth connecting pipe; 20. confluence pipe; 21. output valve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-3A coal-based dimethyl oxalate tail gas purification and recovery device comprises a bottom plate 1, a top end of the bottom plate 1 is fixedly connected to a booster pump 2, an output end of one side of the booster pump 2 is fixedly connected to a buffer tank 3, and an output end of the buffer tank 3 away from the booster pump 2 is fixedly connected to an input head 4, and further comprises:

[0026] The high-efficiency purification mechanism is fixedly connected to one end of the top of the base plate 1. The high-efficiency purification mechanism is provided with a filter cartridge 16 and a second filter cartridge 17. The high-efficiency purification mechanism performs high-efficiency filtration and purification on the liquefied tail gas through the filter cartridge 16 and the second filter cartridge 17, supports the recycling and utilization of the production process, and greatly improves environmental protection.

[0027] Furthermore, a condensation box 5 is fixedly connected to the top of the base plate 1 near the booster pump 2, a condensation pipe 6 is fixedly connected to one end of the inner wall of the condensation box 5, a connecting pipe 7 is fixedly connected to the output end of the top side, and the output end of the connecting pipe 7 away from the booster pump 2 is fixedly connected to the output end of one end of the condensation pipe 6, a condensation fan 8 is fixedly connected to the outer wall of one side of the condensation box 5, a support plate 9 is fixedly connected to one end of the top of the base plate 1 near the booster pump 2, and a fixed vertical plate 10 is fixedly connected to the top of the support plate 9.

[0028] Furthermore, the high-efficiency purification mechanism includes an output pipe 11, a second booster pump 12, a reaction tank 13, a second connecting pipe 14, a shunt pipe 15, a filter cartridge 16, and a second filter cartridge 17. The output end of the top of the condenser tube 6 is fixedly connected to the output pipe 11, and the output end of the output pipe 11 away from the condenser tube 6 is fixedly connected to the second booster pump 12. The outer wall of one side of the fixed vertical plate 10 is fixedly connected to the reaction tank 13, and the output end of the bottom of the second booster pump 12 is fixedly connected to the second connecting pipe 14, and the second connecting pipe 14 is away from the second booster pump 1 2 is fixedly connected to the output end of the reaction tank 13, the output end of the reaction tank 13 away from the second connecting pipe 14 is fixedly connected to the shunt pipe 15, the outer wall of the fixed vertical plate 10 away from the reaction tank 13 is fixedly connected to the filter cartridge 16, the outer wall of the fixed vertical plate 10 close to the filter cartridge 16 is fixedly connected to the second filter cartridge 17, the output end of the top of the shunt pipe 15 is fixedly connected to the output end of the top of the filter cartridge 16, and the output end of the shunt pipe 15 away from the filter cartridge 16 is fixedly connected to the output end of the top of the second filter cartridge 17.

[0029] Furthermore, the high-efficiency purification mechanism also includes a third connecting pipe 18, a fourth connecting pipe 19, a converging pipe 20, and an output valve 21. The third connecting pipe 18 is fixedly connected to the bottom output end of the filter cartridge 16, the fourth connecting pipe 19 is fixedly connected to the bottom output end of the second filter cartridge 17, and the output ends of the third connecting pipe 18 and the fourth connecting pipe 19 pass through the bottom of the fixed vertical plate 10, the output ends of the third connecting pipe 18 and the fourth connecting pipe 19 are fixedly connected to the converging pipe 20, and the output end of the converging pipe 20 away from the third connecting pipe 18 and the fourth connecting pipe 19 is fixedly connected to the output valve 21.

[0030] Furthermore, activated carbon is used for purification and adsorption inside the filter cartridge 16 and the second filter cartridge 17. The activated carbon has a strong adsorption capacity and can remove harmful substances and impurities in the exhaust gas, thereby purifying the exhaust gas.

[0031] Furthermore, the high-efficiency purification mechanism is entirely made of stainless steel and has good corrosion resistance.

[0032] Working principle: First, the tail gas generated in the production process of coal-based dimethyl oxalate is pressurized by the pressure pump 2 on the bottom plate 1. The pressurized tail gas is transported to the buffer tank 3. The function of the buffer tank is to stabilize the flow and pressure of the tail gas to ensure the smooth progress of the subsequent treatment process. Subsequently, the tail gas enters the subsequent treatment part of the device through the input head 4, and then the tail gas enters the condensation box 5 for condensation treatment. A condensation tube 6 is provided in the condensation box 5, and the top of the condensation tube 6 is connected to the connecting pipe 7. In the condensation box 5, the condensation fan 8 cools the condensation tube 6 to reduce its temperature and remove some impurities, creating favorable conditions for subsequent treatment. The cooled tail gas enters the high-efficiency purification mechanism for further treatment. The high-efficiency purification mechanism includes components such as the output pipe 11, the second pressure pump 12, the reaction tank 13, the second connecting pipe 14, the diverter pipe 15, the filter cartridge 16, and the second filter cartridge 17. The tail gas enters the second pressure pump 12 through the output pipe 11 for re-pressurization, and then enters the reaction tank 13 through the second connecting pipe 14. In the reaction tank 13, the tail gas may undergo chemical reactions or further treatment to change its composition or properties. The treated tail gas enters the filter cartridge 16 and the second filter cartridge 17 through the shunt pipe 15 for efficient purification. The filter cartridge 16 and the second filter cartridge 17 are the core components of the efficient purification mechanism, and activated carbon is used for purification and adsorption inside them. Activated carbon has a strong adsorption capacity and can remove harmful substances and impurities in the tail gas to purify the tail gas. The purified tail gas is discharged from the bottom of the filter cartridge 16 and the second filter cartridge 17 through the third connecting pipe 18 and the fourth connecting pipe 19, respectively, and merged in the confluence pipe 20. Finally, the purified tail gas is controlled by the output valve 21. The output valve 21 can adjust the emission or recovery of the tail gas according to actual needs to ensure the compliance emission or effective recovery of the tail gas. The entire device realizes the effective purification and recovery of the tail gas of dimethyl oxalate from coal through the coordinated work of the efficient purification mechanism and other components, and improves the environmental protection and resource utilization efficiency of the production process.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal-based dimethyl oxalate tail gas purification and recovery device, comprising a bottom plate (1), characterized in that: One end of the top of the bottom plate (1) is fixedly connected to a pressure pump (2), one output end of the pressure pump (2) is fixedly connected to a buffer tank (3), and the output end of the buffer tank (3) away from the pressure pump (2) is fixedly connected to an input head (4), characterized in that it also includes: A high-efficiency purification mechanism, the high-efficiency purification mechanism is fixedly connected to one end of the top of the bottom plate (1), the high-efficiency purification mechanism is provided with a filter cartridge (16) and a second filter cartridge (17), and the high-efficiency purification mechanism performs high-efficiency filtering and purification on the liquefied tail gas through the filter cartridge (16) and the second filter cartridge (17).

2. A coal-to-dimethyl oxalate tail gas purification and recovery device according to claim 1, characterized in that: A condensation box (5) is fixedly connected to the top of the base plate (1) near the booster pump (2), a condensation tube (6) is fixedly connected to one end of the inner wall of the condensation box (5), a connecting tube (7) is fixedly connected to the output end of one side of the top, and the output end of the connecting tube (7) away from the booster pump (2) is fixedly connected to the output end of one end of the condensation tube (6), a condensation fan (8) is fixedly connected to the outer wall of one side of the condensation box (5), a support plate (9) is fixedly connected to the top of the base plate (1) near the booster pump (2), and a fixed vertical plate (10) is fixedly connected to the top of the support plate (9).

3. A coal-to-dimethyl oxalate tail gas purification and recovery device according to claim 2, characterized in that: The high-efficiency purification mechanism comprises an output pipe (11), a second booster pump (12), a reaction tank (13), a second connecting pipe (14), a shunt pipe (15), a filter cartridge (16), and a second filter cartridge (17); the top output end of the condenser tube (6) is fixedly connected to the output pipe (11); the output end of the output pipe (11) away from the condenser tube (6) is fixedly connected to the second booster pump (12); the outer wall of one side of the fixed vertical plate (10) is fixedly connected to the reaction tank (13); the bottom output end of the second booster pump (12) is fixedly connected to the second connecting pipe (14); the second connecting pipe (14) away from the second booster pump (1 2) one output end is fixedly connected to one output end of the reaction tank (13); one output end of the reaction tank (13) away from the second connecting tube (14) is fixedly connected to a shunt tube (15); an outer wall of the fixed vertical plate (10) away from the reaction tank (13) is fixedly connected to a filter cartridge (16); an outer wall of the fixed vertical plate (10) close to the filter cartridge (16) is fixedly connected to a second filter cartridge (17); an output end of the top of the shunt tube (15) is fixedly connected to an output end of the top of the filter cartridge (16); and an output end of the shunt tube (15) away from the filter cartridge (16) is fixedly connected to an output end of the top of the second filter cartridge (17).

4. A coal-to-dimethyl oxalate tail gas purification and recovery device according to claim 3, characterized in that: The high-efficiency purification mechanism further comprises a third connecting pipe (18), a fourth connecting pipe (19), a converging pipe (20), and an output valve (21); the bottom output end of the filter cartridge (16) is fixedly connected to the third connecting pipe (18); the bottom output end of the second filter cartridge (17) is fixedly connected to the fourth connecting pipe (19); one output end of the third connecting pipe (18) and the fourth connecting pipe (19) passes through the bottom of the fixed vertical plate (10); one output end of the third connecting pipe (18) and the fourth connecting pipe (19) is fixedly connected to the converging pipe (20); and the output end of the converging pipe (20) away from the third connecting pipe (18) and the fourth connecting pipe (19) is fixedly connected to the output valve (21).

5. The tail gas purification and recovery device for dimethyl oxalate from coal according to claim 3, characterized in that: Activated carbon is used for purification and adsorption inside the filter cartridge (16) and the second filter cartridge (17).

6. The tail gas purification and recovery device for dimethyl oxalate from coal according to claim 1, characterized in that: The high-efficiency purification mechanism is entirely made of stainless steel.

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