A hydrogen recovery device for decamethylenediamine production

Abstract

The utility model relates to the technical field of hydrogen recovery, especially to a hydrogen recovery device for decane diamine preparation, hydrogen is cooled through the condenser to remove water vapor and high boiling point organic matter, then hydrogen enters the desulfurization tower to carry out desulfurization operation, then hydrogen is filtered and purified, the purified hydrogen is transported and recovered through the compression assembly, and the recovery efficiency is improved, the utility model discloses a bottom plate, condenser, desulfurization tower and air inlet pipe, the bottom plate top is provided with condenser and desulfurization tower, the condenser input is provided with air inlet pipe, and the condenser output is communicated with the desulfurization tower input, further includes filter purification assembly and compression assembly, and the desulfurization tower output is provided with filter purification assembly, and the filter purification assembly output is provided with compression assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of hydrogen recovery, and in particular to a hydrogen recovery device for the preparation of sebacic acid. Background Technology

[0002] In the production of sebacic acid, the tail gas from the hydrogenation reaction of sebacic acid contains unreacted hydrogen (about 30%-70%), byproducts (such as ammonia and hydrocarbons), and impurities (H2S, CO, etc.). Traditional direct emission or combustion treatment leads to resource waste and carbon emissions.

[0003] In the prior art, patent document CN213060194U discloses a hydrogen recovery device, including an air inlet connected to a solid filter, the solid filter connected to a one-way valve, a washing chamber on the other side of the one-way valve, a motor below the washing chamber with a rotating shaft connected to the motor extending into the washing chamber, stirring blades mounted on the rotating shaft, a water tank above the washing chamber, a spray plate at the bottom of the water tank with water outlet holes, an air outlet plate at the top of the water tank, a condensation chamber above the air outlet plate, a hydrogen absorption and desorption device above the condensation chamber, an exhaust pipe on the side of the hydrogen absorption and desorption device, a hydrogen collection hood above the hydrogen absorption and desorption device, and an air outlet above the hydrogen collection hood.

[0004] During use, it was found that the above equipment requires stopping hydrogen recovery when cleaning the solid filter, which affects the recovery efficiency. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a hydrogen recovery device for the preparation of sebacic acid.

[0006] This utility model discloses a hydrogen recovery device for the preparation of decanediamine, comprising a base plate, a condenser, a desulfurization tower, and an inlet pipe. The condenser and desulfurization tower are installed at the top of the base plate. An inlet pipe is installed at the input end of the condenser, and the output end of the condenser is connected to the input end of the desulfurization tower. The device also includes a filtration and purification component and a compression component. The filtration and purification component is installed at the output end of the desulfurization tower, and the compression component is installed at the output end of the filtration and purification component. Hydrogen is cooled by the condenser to remove water vapor and high-boiling-point organic matter. Then, the hydrogen enters the desulfurization tower for desulfurization. After that, the hydrogen is filtered and purified. The purified hydrogen is transported and recovered through the compression component, thereby improving the recovery efficiency.

[0007] Preferably, the filtration and purification assembly includes a No. 1 three-way pipe, a gas transmission pipe, a gas transmission valve, a hollow fiber membrane separator, and a No. 2 three-way pipe. The No. 1 three-way pipe is installed at the output end of the desulfurization tower. The two sets of output ends of the No. 1 three-way pipe are respectively connected to the input ends of a set of gas transmission pipes, and the output ends of the two sets of gas transmission pipes are respectively connected to the two sets of input ends of the No. 2 three-way pipe. A set of filtration components, a set of hollow fiber membrane separators, and two sets of gas transmission valves are respectively installed on the gas transmission pipes. The filtration components and hollow fiber membrane separators are located between the two sets of gas transmission valves. Opening the two sets of gas transmission valves on the first set of gas transmission pipes and closing the two sets of gas transmission valves on the second set of gas transmission pipes allows cooled hydrogen to pass through the filtration components for impurity filtration and through the hollow fiber membrane separator for selective hydrogen permeation, thus purifying the hydrogen. When maintenance of the filtration components and hollow fiber membrane separators is required, the gas transmission valves on the two sets of gas transmission pipes can be switched, improving flexibility.

[0008] Preferably, the filter assembly includes a filter box, a cover plate, bolts, and a handle. The filter box is installed on the gas supply pipe, and a filter screen is installed inside the filter box. The cover plate is sealed to the top of the filter box by bolts, and a handle is installed on the top of the cover plate. The cover plate is sealed to the top of the filter box by bolts, and the filter screen filters impurities from the hydrogen gas, thereby improving the purification efficiency.

[0009] Preferably, the compression assembly includes a gas supply pipe, a compressor, and a gas outlet pipe. The input end of the gas supply pipe is connected to the output end of the No. 2 three-way pipe, the output end of the gas supply pipe is connected to the input end of the compressor, and the output end of the compressor is provided with a gas outlet pipe. The purified hydrogen enters the compressor through the gas supply pipe, the compressor compresses the purified hydrogen, and then discharges it for recycling through the gas outlet pipe.

[0010] Preferably, the device also includes adjustable feet, with a set of adjustable feet provided at each of the four corners of the bottom of the base plate; the four sets of adjustable feet work together to provide stable support for the device and improve stability.

[0011] Preferably, it also includes a handle cover, on which the handle is fitted; the operator grips the handle with the handle cover to reduce the chance of slipping.

[0012] Preferably, it also includes annular flat washers, with each group of bolts fitted with annular flat washers; the bolts are sealed to the top of the cover plate by the annular flat washers, thus improving the firmness.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the hydrogen is cooled by the condenser to remove water vapor and high-boiling-point organic matter. Then the hydrogen enters the desulfurization tower for desulfurization. After that, the hydrogen is filtered and purified. The purified hydrogen is transported and recovered through the compression component, thereby improving the recovery efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the first isometric structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the second isometric structure of this utility model;

[0016] Figure 3 yes Figure 2 A partially enlarged structural diagram of section A in the middle;

[0017] Figure 4 yes Figure 2 A magnified schematic diagram of part B in the middle section.

[0018] The following are labeled in the attached diagram: 1. Base plate; 2. Condenser; 3. Desulfurization tower; 4. No. 1 tee pipe; 5. Gas supply pipe; 6. Gas supply valve; 7. Hollow fiber membrane separator; 8. No. 2 tee pipe; 9. Filter box; 10. Cover plate; 11. Bolt; 12. Handle; 14. Gas supply pipe; 15. Compressor; 16. Gas outlet pipe; 17. Adjustable foot; 18. Handle cover; 19. Annular flat gasket; 20. Gas inlet pipe. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0020] Example 1

[0021] like Figures 1 to 4 As shown, a hydrogen recovery device for the preparation of decanediamine according to this utility model includes a base plate 1, a condenser 2, a desulfurization tower 3 and an inlet pipe 20. The condenser 2 and the desulfurization tower 3 are provided at the top of the base plate 1. The inlet pipe 20 is provided at the input end of the condenser 2 and the output end of the condenser 2 is connected to the input end of the desulfurization tower 3. It also includes a filtration and purification component and a compression component. The filtration and purification component is provided at the output end of the desulfurization tower 3 and the compression component is provided at the output end of the filtration and purification component.

[0022] like Figures 1 to 4 As shown, the filtration and purification assembly includes a No. 1 three-way pipe 4, a gas transmission pipe 5, a gas transmission valve 6, a hollow fiber membrane separator 7, and a No. 2 three-way pipe 8. The No. 1 three-way pipe 4 is installed at the output end of the desulfurization tower 3. The two sets of output ends of the No. 1 three-way pipe 4 are respectively connected to the input ends of a set of gas transmission pipes 5. The output ends of the two sets of gas transmission pipes 5 are respectively connected to the two sets of input ends of the No. 2 three-way pipe 8. A set of filtration assembly, a set of hollow fiber membrane separators 7, and two sets of gas transmission valves 6 are respectively installed on the gas transmission pipe 5. The filtration assembly and the hollow fiber membrane separator 7 are located between the two sets of gas transmission valves 6.

[0023] like Figures 1 to 4As shown, the filter assembly includes a filter box 9, a cover plate 10, bolts 11 and a handle 12. The filter box 9 is installed on the air supply pipe 5. A filter screen is installed inside the filter box 9. The cover plate 10 seals the top of the filter box 9 with bolts 11. A handle 12 is installed on the top of the cover plate 10.

[0024] In this embodiment, the two gas supply valves 6 on the first gas supply pipe 5 are opened and the two gas supply valves 6 on the second gas supply pipe 5 are closed, so that the cooled hydrogen gas passes through the filter screen inside the filter box 9 to filter impurities and then passes through the hollow fiber membrane separator 7 to selectively permeate hydrogen, thereby purifying the hydrogen gas. When maintenance is required on the filter assembly and the hollow fiber membrane separator 7, the gas supply valves 6 on the two gas supply pipes 5 can be switched.

[0025] Example 2

[0026] like Figures 1 to 4 As shown, a hydrogen recovery device for the preparation of decanediamine according to this utility model includes a base plate 1, a condenser 2, a desulfurization tower 3 and an inlet pipe 20. The condenser 2 and the desulfurization tower 3 are provided at the top of the base plate 1. The inlet pipe 20 is provided at the input end of the condenser 2 and the output end of the condenser 2 is connected to the input end of the desulfurization tower 3. It also includes a filtration and purification component and a compression component. The filtration and purification component is provided at the output end of the desulfurization tower 3 and the compression component is provided at the output end of the filtration and purification component.

[0027] like Figures 1 to 4 As shown, the filtration and purification assembly includes a No. 1 three-way pipe 4, a gas transmission pipe 5, a gas transmission valve 6, a hollow fiber membrane separator 7, and a No. 2 three-way pipe 8. The No. 1 three-way pipe 4 is installed at the output end of the desulfurization tower 3. The two sets of output ends of the No. 1 three-way pipe 4 are respectively connected to the input ends of a set of gas transmission pipes 5. The output ends of the two sets of gas transmission pipes 5 are respectively connected to the two sets of input ends of the No. 2 three-way pipe 8. A set of filtration assembly, a set of hollow fiber membrane separators 7, and two sets of gas transmission valves 6 are respectively installed on the gas transmission pipe 5. The filtration assembly and the hollow fiber membrane separator 7 are located between the two sets of gas transmission valves 6.

[0028] like Figures 1 to 4 As shown, the filter assembly includes a filter box 9, a cover plate 10, bolts 11 and a handle 12. The filter box 9 is installed on the air supply pipe 5. A filter screen is installed inside the filter box 9. The cover plate 10 seals the top of the filter box 9 with bolts 11. A handle 12 is installed on the top of the cover plate 10.

[0029] The compression assembly includes an air supply pipe 14, a compressor 15, and an air outlet pipe 16. The input end of the air supply pipe 14 is connected to the output end of the No. 2 three-way pipe 8, the output end of the air supply pipe 14 is connected to the input end of the compressor 15, and the output end of the compressor 15 is provided with an air outlet pipe 16.

[0030] It also includes adjustable feet 17, handle sleeves 18 and annular flat washers 19. A set of adjustable feet 17 is provided at each of the four corners of the bottom end of the base plate 1. The handle 12 is fitted with handle sleeves 18, and each set of bolts 11 is fitted with annular flat washers 19.

[0031] In this embodiment, the two sets of gas supply valves 6 on the first set of gas supply pipes 5 are opened and the two sets of gas supply valves 6 on the second set of gas supply pipes 5 are closed, so that the cooled hydrogen gas passes through the filter screen inside the filter box 9 to filter impurities and selectively permeates hydrogen through the hollow fiber membrane separator 7 to purify the hydrogen gas. When maintenance is required on the filter components and the hollow fiber membrane separator 7, the gas supply valves 6 on the two sets of gas supply pipes 5 can be switched. The purified hydrogen gas enters the compressor 15 through the gas supply pipe 14. The compressor 15 compresses the purified hydrogen gas and discharges it for recycling through the gas outlet pipe 16.

[0032] The condenser 2, desulfurization tower 3, hollow fiber membrane separator 7, and compressor 15 of the hydrogen recovery device for the preparation of sebacic acid of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A hydrogen recovery device for the preparation of decanediamine, comprising a base plate (1), a condenser (2), a desulfurization tower (3), and an inlet pipe (20), wherein the condenser (2) and the desulfurization tower (3) are disposed at the top of the base plate (1), the inlet pipe (20) is disposed at the input end of the condenser (2), and the output end of the condenser (2) is connected to the input end of the desulfurization tower (3), characterized in that, It also includes a filtration and purification component and a compression component. The output end of the desulfurization tower (3) is equipped with a filtration and purification component, and the output end of the filtration and purification component is equipped with a compression component.

2. The hydrogen recovery device for the preparation of sebacic acid as described in claim 1, characterized in that, The filtration and purification components include a No. 1 three-way pipe (4), a gas transmission pipe (5), a gas transmission valve (6), a hollow fiber membrane separator (7), and a No. 2 three-way pipe (8). The No. 1 three-way pipe (4) is installed at the output end of the desulfurization tower (3). The two sets of output ends of the No. 1 three-way pipe (4) are respectively connected to the input ends of a set of gas transmission pipes (5). The output ends of the two sets of gas transmission pipes (5) are respectively connected to the two sets of input ends of the No. 2 three-way pipe (8). A set of filter components, a set of hollow fiber membrane separators (7), and two sets of gas transmission valves (6) are respectively installed on the gas transmission pipe (5). The filter components and the hollow fiber membrane separators (7) are located between the two sets of gas transmission valves (6).

3. The hydrogen recovery device for the preparation of sebacic acid as described in claim 2, characterized in that, The filter assembly includes a filter box (9), a cover plate (10), bolts (11) and a handle (12). The filter box (9) is installed on the gas pipe (5). A filter screen is installed inside the filter box (9). The cover plate (10) is sealed to the top of the filter box (9) by bolts (11). A handle (12) is installed on the top of the cover plate (10).

4. The hydrogen recovery device for the preparation of sebacic acid as described in claim 3, characterized in that, The compression assembly includes an air supply pipe (14), a compressor (15), and an air outlet pipe (16). The input end of the air supply pipe (14) is connected to the output end of the No. 2 three-way pipe (8), and the output end of the air supply pipe (14) is connected to the input end of the compressor (15). The output end of the compressor (15) is provided with an air outlet pipe (16).

5. The hydrogen recovery device for the preparation of sebacic acid as described in claim 1, characterized in that, It also includes adjustable feet (17), and a set of adjustable feet (17) is provided at the four corners of the bottom end of the base plate (1).

6. The hydrogen recovery device for the preparation of sebacic acid as described in claim 3, characterized in that, It also includes a handle cover (18), which is fitted onto the handle (12).

7. The hydrogen recovery device for the preparation of sebacic acid as described in claim 3, characterized in that, It also includes annular flat washers (19), with annular flat washers (19) fitted on each set of bolts (11).

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