Large methanol-to-hydrogen kettle type vaporizer

Abstract

The utility model discloses a large-scale methanol hydrogen production kettle type vaporizer, which relates to the technical field of hydrogen production, and has the technical key points that the large-scale methanol hydrogen production kettle type vaporizer comprises a reaction kettle and a vaporization assembly, the reaction kettle is internally provided with a reaction area, a vaporization area and a hydrogen area, and one side of the reaction kettle is fixedly connected with a heat conduction oil inlet pipe and a heat conduction oil outlet pipe respectively; the vaporization assembly comprises a vaporization pipe rotationally mounted in the reaction area, the lower end of the vaporization pipe extends to the bottom of the reaction kettle and is rotationally connected with a methanol mixed liquid inlet pipe, the upper end of the vaporization pipe extends to the top of the reaction kettle and is rotationally connected with a gas guide pipe, and the other end of the gas guide pipe is communicated with the vaporization area; a driving assembly for driving the vaporization pipe to rotate is arranged at the bottom of the reaction kettle. The device has the technical effects that by arranging the driving assembly, heat-conducting oil in the reaction kettle can be stirred and turned over in the vaporization process, so that the fluidity of the heat-conducting oil is improved, the temperature is uniform, and the vaporization efficiency of methanol mixed liquid in the vaporization pipe can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen production technical field, concretely is a large -scale methanol hydrogenation cauldron formula vaporizer. BACKGROUND

[0002] Methanol hydrogen production refers to the process that after mixing methanol and water vapor under certain temperature and pressure, methanol is cracked by catalyst to obtain hydrogen and carbon dioxide. In industry, methanol and desalted water are mixed in a certain proportion, and then sent into a vaporization tower for vaporization. The vaporized water-methanol steam is heated by a superheater and then enters a converter. The converter contains catalyst. The water-methanol steam is cracked by the catalyst in the converter to produce hydrogen and carbon dioxide.

[0003] The existing patent with publication number CN210635722U discloses a small-sized methanol hydrogen production device, which comprises a comprehensive reaction tank filled with heat-conducting oil, a vaporization pipe, a cracking pipe and a heat-conducting oil circulation system. The vaporization pipe and the cracking pipe are located inside the comprehensive reaction tank. The gas after vaporization in the vaporization pipe enters the cracking pipe. The heat-conducting oil circulation system comprises a heating assembly, a heat-conducting oil pipe and a heat pump. The heating assembly and the heat pump are in communication with the heat-conducting oil pipe. The two ends of the heat-conducting oil pipe are in communication with the comprehensive reaction tank to form a heat-conducting oil circulation.

[0004] For the above-mentioned related technology, the inventors found that at least the following problems exist in the technology: In a large-scale methanol hydrogenation cauldron vaporizer, the flowability of the heat-conducting oil in the reaction kettle is poor, which leads to uneven temperature of the heat-conducting oil in the reaction kettle and reduces the vaporization efficiency of the methanol mixture in the vaporization pipe.

[0005] Therefore, we propose a large-scale methanol hydrogenation cauldron vaporizer. Utility model content

[0006] (I) Technical problem solved

[0007] In view of the deficiencies of the prior art, the utility model provides a large-scale methanol hydrogenation cauldron vaporizer, which solves the problem of poor flowability of heat-conducting oil in the reaction kettle, which leads to uneven temperature of the heat-conducting oil in the reaction kettle and reduces the vaporization efficiency of the methanol mixture in the vaporization pipe.

[0008] (II) Technical scheme

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a large-scale methanol hydrogenation cauldron vaporizer, comprising a reaction kettle and a vaporization assembly, the inside of the reaction kettle is provided with a reaction zone, a vaporization zone and a hydrogen zone, one side of the reaction kettle is fixedly connected with a heat-conducting oil inlet pipe and a heat-conducting oil outlet pipe respectively;

[0010] The vaporization assembly comprises a vaporization pipe rotatably arranged in the reaction zone, the lower end of the vaporization pipe extends to the bottom of the reaction kettle and is rotatably connected with a methanol mixed solution inlet pipe, the upper end of the vaporization pipe extends to the top of the reaction kettle and is rotatably connected with a gas guide pipe, the other end of the gas guide pipe is communicated with the vaporization zone, the bottom of the reaction kettle is provided with a driving assembly for driving the vaporization pipe to rotate, the cracking pipe penetrating through the reaction zone is fixedly connected between the vaporization zone and the hydrogen zone, and the bottom of the hydrogen zone is fixedly connected with a hydrogen storage pipe.

[0011] Preferably, the upper and lower ends of the reaction kettle are both fixedly installed with end covers through flanges.

[0012] Preferably, the heat conducting oil inlet pipe and the heat conducting oil outlet pipe are both installed with first valves.

[0013] Preferably, the outer surface of the reaction kettle is fixedly sleeved with a heat preservation layer.

[0014] Preferably, the gas guide pipe is installed with a second valve.

[0015] Preferably, the two ends of the vaporization pipe are both provided with rotary joints between the methanol mixed solution inlet pipe and the gas guide pipe, and the two ends of the vaporization pipe are rotatably connected with the methanol mixed solution inlet pipe and the gas guide pipe through the rotary joints.

[0016] Preferably, the driving assembly comprises a motor fixedly installed at the bottom of the reaction kettle, the output end of the motor is fixedly installed with a main gear, and the lower end of the vaporization pipe is fixedly installed with a driven gear meshing with the main gear.

[0017] Preferably, the bottom of the reaction kettle is fixedly installed with a protective shell, and the driving assembly is arranged in the protective shell.

[0018] (Three) beneficial effects

[0019] Compared with the prior art, the utility model provides a, has the following beneficial effects:

[0020] 1, the utility model discloses a driving assembly is set up, in the vaporization process, can start motor and drive main gear rotation, make main gear drive driven gear rotation, make driven gear drive vaporization pipe rotation, make vaporization pipe to the reaction kettle of heat conducting oil carry out stirring and tumble, make the flowability of heat conducting oil increase, temperature is uniform, thereby can improve the vaporization efficiency of methanol mixed solution in vaporization pipe.

[0021] 2, the utility model discloses a heat preservation layer is set up, can play the heat preservation of reaction kettle, reduce the heat loss in reaction kettle, improve the energy -saving effect. ACCURACY OF DRAWINGS

[0022] Figure 1 It is the whole structure schematic diagram of the utility model;

[0023] Figure 2 It is the front view structure schematic diagram of the utility model;

[0024] Figure 3 It is the section structure schematic diagram of the utility model;

[0025] Figure 4 It is the utility model Figure 3 The structure enlarged view of A place in the middle.

[0026] In the drawing:

[0027] 1, reaction kettle;11, reaction zone;12, vaporization zone;13, hydrogen zone;14, heat conducting oil inlet pipe;15, heat conducting oil outlet pipe;16, cracking pipe;17, hydrogen storage pipe;18, flange;19, end cover;110, first valve;111, heat preservation layer;

[0028] 2, vaporization assembly;21, vaporization pipe;22, methanol mixed solution inlet pipe;23, gas guide pipe;24, driving assembly;241, motor;242, main gear;243, from gear;25, second valve;26, rotary joint;27, protective shell. Specific implementation

[0029] In the utility model, in the case where no opposite statement is made, the used directions such as '' up, down '' are usually for the direction shown in the drawing, or for the vertical, perpendicular or gravity direction;Similarly, for the convenience of understanding and description, '' left, right '' is usually for the left, right shown in the drawing;'' inner, outer '' refers to the inner, outer of the contour of each component itself, but the above direction words are not used to limit the utility model.

[0030] The utility model provides a technical scheme:

[0031] Please refer to Figures 1-4 A large -scale methanol hydrogen kettle formula vaporizer, including reaction kettle 1 and vaporization assembly 2, the inside of reaction kettle 1 is provided with reaction zone 11, vaporization zone 12 and hydrogen zone 13, and the side of reaction kettle 1 is fixedly connected with heat conducting oil inlet pipe 14 and heat conducting oil outlet pipe 15 respectively, first valve 110 is installed on heat conducting oil inlet pipe 14 and heat conducting oil outlet pipe 15, by setting heat conducting oil inlet pipe 14 and heat conducting oil outlet pipe 15, heated heat conducting oil can be added from heat conducting oil inlet pipe 14 to the vaporization zone 12 in reaction kettle 1, and the heat conducting oil in the vaporization zone 12 of reaction kettle 1 is discharged from heat conducting oil outlet pipe 15 for recycling.

[0032] Further, the outer surface of reaction kettle 1 is fixedly sleeved with heat preservation layer 111, the heat preservation layer 111 adopts polyurethane foaming material, by setting heat preservation layer 111, the heat preservation layer 111 can play the heat preservation of reaction kettle 1, reduce the heat loss in reaction kettle 1, and improve the energy-saving effect.

[0033] Further, the upper and lower ends of the reaction kettle 1 are fixedly installed with end covers 19 through flanges 18. The end covers 19 are arranged to facilitate opening of the reaction kettle 1 and maintenance of the interior of the reaction kettle 1.

[0034] With reference to Figure 2 and Figure 3 , the vaporization assembly 2 comprises a vaporization pipe 21 rotatably installed in the reaction zone 11. The lower end of the vaporization pipe 21 extends to the bottom of the reaction kettle 1 and is rotatably connected with a methanol mixture inlet pipe 22. The upper end of the vaporization pipe 21 extends to the top of the reaction kettle 1 and is rotatably connected with a gas guide pipe 23. The other end of the gas guide pipe 23 is in communication with the vaporization zone 12. The second valve 25 is installed on the gas guide pipe 23. The cracking pipe 16, which penetrates the reaction zone 11, is fixedly connected between the vaporization zone 12 and the hydrogen zone 13. The cracking pipe 16 is filled with catalysts. The hydrogen storage pipe 17 is fixedly connected to the bottom of the hydrogen zone 13. The methanol mixture is introduced into the vaporization pipe 21 from the methanol mixture inlet pipe 22 through the arrangement of the vaporization assembly 2. The methanol mixture absorbs the heat of the heat conducting oil in the vaporization pipe 21 and vaporizes. The vaporized mixture enters the vaporization zone 12 of the reaction kettle 1 through the gas guide pipe 23 and enters the interior of the cracking pipe 16. The mixture reacts under the action of the catalysts in the cracking pipe 16 to produce hydrogen and carbon dioxide mixture. The hydrogen is discharged through the hydrogen storage pipe 17 to realize the production of hydrogen from methanol.

[0035] The two ends of the vaporization pipe 21 are provided with rotary joints 26 between the methanol mixture inlet pipe 22 and the gas guide pipe 23. The two ends of the vaporization pipe 21 are rotatably connected with the methanol mixture inlet pipe 22 and the gas guide pipe 23 through the rotary joints 26. The rotary joints 26 enable the vaporization pipe 21 to rotate relative to the methanol mixture inlet pipe 22 and the gas guide pipe 23.

[0036] With reference to Figure 3 and Figure 4 , the bottom of the reaction kettle 1 is provided with a driving assembly 24 for driving the vaporization pipe 21 to rotate. The driving assembly 24 comprises a motor 241 fixedly installed at the bottom of the reaction kettle 1. The output end of the motor 241 is fixedly installed with a main gear 242. The lower end of the vaporization pipe 21 is fixedly installed with a driven gear 243 engaged with the main gear 242. The driving assembly 24 enables the motor 241 to drive the main gear 242 to rotate during the vaporization process. The main gear 242 drives the driven gear 243 to rotate, which drives the vaporization pipe 21 to rotate. The vaporization pipe 21 stirs and rolls the heat conducting oil in the reaction kettle 1, which increases the flowability of the heat conducting oil and makes the temperature uniform. Therefore, the vaporization efficiency of the methanol mixture in the vaporization pipe 21 is improved.

[0037] Further, the bottom of the reaction kettle 1 is fixedly provided with a protective shell 27, and the driving assembly 24 is arranged in the protective shell 27.

[0038] In use, the working principle of the present application is as follows:

[0039] Firstly, the methanol mixed solution is introduced into the vaporization pipe 21 from the methanol mixed solution inlet pipe 22, and the methanol mixed solution absorbs the heat of the heat conducting oil in the vaporization pipe 21 and vaporizes, and the vaporized mixed solution enters the vaporization zone 12 of the reaction kettle 1 through the gas guide pipe 23 and enters the inside of the cracking pipe 16, and under the action of the catalyst in the cracking pipe 16, the cracking reaction occurs to produce hydrogen and carbon dioxide mixed gas, and then the hydrogen is discharged through the hydrogen storage pipe 17, so as to realize the methanol hydrogen production.

[0040] During the vaporization process, the motor 241 can be started to drive the main gear 242 to rotate, so that the main gear 242 drives the slave gear 243 to rotate, and the slave gear 243 drives the vaporization pipe 21 to rotate, so that the vaporization pipe 21 stirs and rolls the heat conducting oil in the reaction kettle 1, so that the flowability of the heat conducting oil is increased, and the temperature is uniform, so that the vaporization efficiency of the methanol mixed solution in the vaporization pipe 21 is improved.

[0041] As described above, the large-scale methanol hydrogen production kettle type vaporizer is provided with the driving assembly 24, so that the heat conducting oil in the reaction kettle 1 can be stirred and rolled during the vaporization process, so that the flowability of the heat conducting oil is increased, and the temperature is uniform, so that the vaporization efficiency of the methanol mixed solution in the vaporization pipe 21 is improved.

[0042] The above is only a specific embodiment of the present application, but the technical features of the present application are not limited thereto. Any simple change, equivalent replacement or modification made on the basis of the present application to solve the same technical problem and achieve the same technical effect is also covered by the protection scope of the present application.

Claims

1. A large methanol-to-hydrogen autoclave, comprising a reaction autoclave (1) and a vaporization assembly (2), characterized in that: The inside of the reaction kettle (1) is provided with a reaction zone (11), a vaporization zone (12) and a hydrogen zone (13), one side of the reaction kettle (1) is fixedly connected with a heat conducting oil inlet pipe (14) and a heat conducting oil outlet pipe (15) respectively; The vaporization assembly (2) comprises a vaporization pipe (21) rotatably installed in the reaction zone (11), the lower end of the vaporization pipe (21) extends to the bottom of the reaction kettle (1) and is rotatably connected with a methanol mixed solution inlet pipe (22), the upper end of the vaporization pipe (21) extends to the top of the reaction kettle (1) and is rotatably connected with a gas guide pipe (23), the other end of the gas guide pipe (23) communicates with the vaporization zone (12), the bottom of the reaction kettle (1) is provided with a driving assembly (24) for driving the vaporization pipe (21) to rotate, a cracking pipe (16) penetrating through the reaction zone (11) is fixedly connected between the vaporization zone (12) and the hydrogen zone (13), and the bottom of the hydrogen zone (13) is fixedly connected with a hydrogen storage pipe (17).

2. A large methanol-to-hydrogen still vaporizer according to claim 1, characterized in that: The upper and lower ends of the reaction kettle (1) are both fixedly installed with end covers (19) through flanges (18).

3. A large methanol-to-hydrogen still vaporizer according to claim 1, characterized in that: First valves (110) are installed on the heat conducting oil inlet pipe (14) and the heat conducting oil outlet pipe (15).

4. A large methanol-to-hydrogen still vaporizer according to claim 1, characterized in that: An insulating layer (111) is fixedly sleeved on the outer surface of the reaction kettle (1).

5. A large methanol-to-hydrogen still vaporizer according to claim 1, characterized in that: Second valves (25) are installed on the gas guide pipes (23).

6. A large methanol-to-hydrogen still vaporizer according to claim 1, characterized in that: Rotary joints (26) are arranged between the two ends of the vaporization pipe (21) and the methanol mixed solution inlet pipe (22) and the gas guide pipe (23), and the two ends of the vaporization pipe (21) are rotatably connected with the methanol mixed solution inlet pipe (22) and the gas guide pipe (23) through the rotary joints (26).

7. A large methanol-to-hydrogen still vaporizer according to claim 1, characterized in that: The driving assembly (24) comprises a motor (241) fixedly installed at the bottom of the reaction kettle (1), an output end of the motor (241) is fixedly installed with a main gear (242), and the lower end of the vaporization pipe (21) is fixedly installed with a slave gear (243) engaged with the main gear (242).

8. A large methanol-to-hydrogen still vaporizer according to claim 7, characterized in that: The bottom of the reaction kettle (1) is fixedly installed with a protective shell (27), and the driving assembly (24) is arranged in the protective shell (27).

Images