Two-in-one heat exchanger for natural gas hydrogen production equipment

Abstract

The utility model relates to the technical field of natural gas hydrogen production equipment, in particular to a two-in-one heat exchanger for natural gas hydrogen production equipment, which comprises a barrel, outer connecting barrels are arranged on two sides of the barrel, two groups of heat exchange tubes are arranged in the barrel, and the joint of each outer connecting barrel and the barrel is divided into an upper cavity and a lower cavity which are respectively a first cavity and a second cavity. The heat exchange pipe is connected with the two cavities, a linear bearing is arranged in the supporting frame, a linear rod is arranged in the linear bearing, and the linear rod is sleeved with a buffer spring; the device has the beneficial effects that heat in converted gas and medium-converted gas can be reasonably recycled at the same time, desalted water vapor is heated and pressurized by utilizing the recycled heat, and steam meeting the subsequent process requirements is generated and flows out of the steam outlet of the device to be used at the rear end; and by means of the side supporting plates, the supporting frames, the linear rods, the buffer springs, the first abutting rings and the second abutting rings, buffering can be provided for the barrel.

Description

Technical Field

[0001] The utility model relates to the field of natural gas hydrogen production equipment, in particular to a two-in-one heat exchanger for natural gas hydrogen production equipment. Background Art

[0002] Natural gas hydrogen production technology is an important energy conversion process, mainly used to produce high-purity hydrogen, and is widely used in chemical industry, petroleum refining, fuel cell vehicles and other fields.

[0003] In the prior art, in the natural gas hydrogen production process, the front-stage hydrocarbon steam reforming part is operated under high temperature conditions, so the temperature of the gas coming out of the reforming device is very high, while the product hydrogen is close to room temperature. Therefore, it is necessary to reasonably recycle the heat in the reformed gas and the intermediate reformed gas according to the temperature conditions of the subsequent processes of the hydrogen production system. For this reason, it is urgent to design a new type of device to process the heat in the reformed gas and the intermediate reformed gas.

[0004] To this end, the utility model proposes a two-in-one heat exchanger for natural gas hydrogen production equipment to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a two-in-one heat exchanger for natural gas hydrogen production equipment to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a two-in-one heat exchanger for a natural gas hydrogen production device, the two-in-one heat exchanger for a natural gas hydrogen production device comprising: a cylinder, both sides of the cylinder are provided with external connection cylinders, the cylinder is provided with two groups of heat exchange tubes, the connection between the external connection cylinder and the cylinder is divided into two upper and lower cavities, namely a first cavity and a second cavity, and the heat exchange tubes are connected to the two cavities;

[0007] The support frame is provided with a linear bearing inside the support frame, a linear rod is provided inside the linear bearing, a buffer spring is sleeved on the linear rod, one end of the buffer spring is fixedly connected to a first stop ring, and the other end of the buffer spring is fixedly connected to a second stop ring.

[0008] Preferably, the surface of the cylinder is provided with a pressure gauge port, a first safety valve port, a second safety valve port, a thermometer port, a steam outlet and a liquid level gauge, the steam outlet is located at the center axis of the cylinder, the first safety valve and the second safety valve are symmetrically distributed about the steam outlet, and the pressure gauge port and the thermometer port are symmetrically distributed about the steam outlet.

[0009] Preferably, a first sewage outlet, a second sewage outlet and a desalted water steam inlet are provided below the cylinder. The desalted water steam inlet is located at the center axis of the cylinder. The first sewage outlet and the second sewage outlet are symmetrically distributed about the desalted water steam inlet.

[0010] Preferably, the outer connecting cylinder is connected to the cylinder body through a flange, and a conversion gas inlet and a conversion gas outlet are provided at the left outer connecting cylinder, the conversion gas inlet is connected to the first cavity, and the conversion gas outlet is connected to the second cavity, and a middle conversion gas inlet and a middle conversion gas outlet are provided at the right outer connecting cylinder, the middle conversion gas inlet is connected to the first cavity, and the middle conversion gas outlet is connected to the second cavity.

[0011] Preferably, the support frame is fixed to both sides of the cylinder by welding, and a base is fixed to the bottom of the support frame, and the base is in the shape of a square plate.

[0012] Preferably, both ends of the linear rod are fixedly connected to the side support plates, and the side support plates are fixed to the ground by bolts.

[0013] Preferably, the first stop ring abuts against the surface of the support plate, the second stop ring abuts against the surface of the side support plate, and an inner cavity is provided on the surface of the first stop ring, and the linear bearing can be embedded in the inner cavity.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model proposes a two-in-one heat exchanger for natural gas hydrogen production equipment, which can realize the reasonable recovery and utilization of heat in the conversion gas and the intermediate conversion gas at the same time, utilize the recovered heat to heat and pressurize the desalted water vapor, generate steam that meets the needs of subsequent processes, and flow out from the steam outlet of the device for use by the rear end, utilize the side support plates, support frames, linear rods, buffer springs, first stop rings and second stop rings to provide buffering for the cylinder, absorb the vibration generated during processing operations, and improve the overall stability of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is the front view of the structure of the utility model;

[0018] Figure 3 This is a detailed diagram of the structure of the utility model;

[0019] Figure 4 This is a cross-sectional view of the structure of the external connection tube of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the first stop ring of the utility model.

[0021] In the figure: 1. conversion gas outlet; 2. conversion gas inlet; 3. external connection tube; 4. side support plate; 5. support frame; 6. base; 7. linear rod; 8. liquid level gauge; 9. buffer spring; 10. intermediate conversion gas outlet;

[0022] 11. Pressure gauge port; 12. First safety valve port; 13. Steam outlet; 14. Second safety valve port; 15. Thermometer port; 16. Cylinder; 17. Intermediate variable gas inlet; 18. Linear bearing; 19. First stop ring;

[0023] 20. Inner cavity; 21. Second stop ring; 22. First sewage outlet; 23. Desalted water vapor inlet; 24. Second sewage outlet; 25. Second cavity; 26. First cavity; 27. Heat exchange tube. DETAILED DESCRIPTION

[0024] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of 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] Embodiment 1

[0026] See also Figure 1-Figure 5 The utility model provides a technical solution: a two-in-one heat exchanger for a natural gas hydrogen production device, the two-in-one heat exchanger for the natural gas hydrogen production device comprising: a cylinder 16, both sides of the cylinder 16 are provided with an external connection cylinder 3, the cylinder 16 is provided with two groups of heat exchange tubes 27, the connection between the external connection cylinder 3 and the cylinder 16 is divided into two upper and lower cavities, namely a first cavity 26 and a second cavity 25, and the heat exchange tube 27 is connected to the two cavities;

[0027] A first sewage outlet 22, a second sewage outlet 24 and a desalted water vapor inlet 23 are provided below the cylinder 16. The desalted water vapor inlet 23 is located at the central axis of the cylinder 16. The first sewage outlet 22 and the second sewage outlet 24 are symmetrically distributed about the desalted water vapor inlet 23.

[0028] When in use, first, when the conversion gas at the outlet of the conversion device in the hydrogen production process is introduced into the device, the conversion gas releases heat from the inside of the heat exchange tube 27 in the device, and finally flows out from the conversion gas outlet 1. The conversion gas after heat exchange can just meet the temperature requirement of the medium-temperature conversion; secondly, since the medium-temperature conversion is an exothermic reaction, the temperature of the medium-temperature conversion gas flowing out of the device rises after the medium-temperature conversion. The medium-temperature conversion gas is introduced from the medium-temperature conversion gas inlet 17, and then releases heat inside the heat exchange tube 27 at the other end, and finally flows out from the medium-temperature conversion gas outlet 10, and the desalted water vapor is introduced from the desalted water vapor inlet 23 at the bottom of the cylinder 16. The desalted water vapor entering the cylinder 16 absorbs the heat of the conversion gas and the medium-temperature conversion gas, and then increases the temperature and pressure to generate steam that meets the subsequent process requirements, and finally flows out from the steam outlet 13 of the device for use by the back end, thereby realizing heat recovery and utilization.

[0029] Embodiment 2

[0030] On the basis of the first embodiment, a support frame 5 is provided, a linear bearing 18 is provided inside the support frame 5, a linear rod 7 is provided inside the linear bearing 18, a buffer spring 9 is sleeved on the linear rod 7, one end of the buffer spring 9 is fixedly connected to a first stop ring 19, and the other end of the buffer spring 9 is fixedly connected to a second stop ring 21;

[0031] The support frame 5 is fixed to both sides of the cylinder 16 by welding, and a base 6 is fixed to the bottom of the support frame 5. The base 6 is in the shape of a square plate, and both ends of the linear rod 7 are fixedly connected to the side support plate 4, and the side support plate 4 is fixed to the ground by bolts;

[0032] The first stop ring 19 abuts against the surface of the support plate, and the second stop ring 21 abuts against the surface of the side support plate 4. The surface of the first stop ring 19 is provided with an inner cavity 20, and the linear bearing 18 can be embedded in the inner cavity 20;

[0033] When in use, during the process of introducing gas, the cylinder 16 may be subjected to force to vibrate in the front-back direction, and the support frame 5 provided at this time will vibrate synchronously. At this time, the support frame 5 will squeeze the first stop ring 19 left and right under the setting of the linear rod 7 and the linear bearing 18, thereby causing the buffer spring 9 to be compressed and store elastic potential energy, which can absorb vibration and deviation, and improve the stability of the cylinder 16;

[0034] At the same time, the first stop ring 19 is provided with an inner cavity 20, so that the linear bearing 18 can be embedded in the inner cavity 20 when stopping, so that the surface of the first stop ring 19 can abut the support frame 5, and the side support plates 4 fixedly connected at both ends of the linear rod 7 are fixed by bolts to improve the stability of the linear rod 7. The linear rod 7 can provide guidance for the vibration of the support frame 5, so that the vibration is biased toward the horizontal direction of the linear rod 7, so as to facilitate the buffer spring 9 to perform buffering operations.

[0035] Embodiment 3

[0036] On the basis of the second embodiment, the outer connecting tube 3 is connected to the cylinder 16 through a flange, and a conversion gas inlet 2 and a conversion gas outlet 1 are provided at the left outer connecting tube 3, the conversion gas inlet 2 is connected to the first cavity 26, and the conversion gas outlet 1 is connected to the second cavity 25, and a middle conversion gas inlet 17 and a middle conversion gas outlet 10 are provided at the right outer connecting tube 3, the middle conversion gas inlet 17 is connected to the first cavity 26, and the middle conversion gas outlet 10 is connected to the second cavity 25;

[0037] The surface of the cylinder 16 is provided with a pressure gauge port 11, a first safety valve port 12, a second safety valve port 14, a thermometer port 15, a steam outlet 13 and a liquid level gauge 8. The steam outlet 13 is located at the center axis of the cylinder 16. The first safety valve and the second safety valve are symmetrically distributed about the steam outlet 13. The pressure gauge port 11 and the thermometer port 15 are symmetrically distributed about the steam outlet 13.

[0038] When in use, the external connecting cylinder 3 is connected to the cylinder 16 through a flange, which is convenient for installation and disassembly, and convenient for inspection and maintenance of both ends of the cylinder 16. The safety valve port on the device is used for overpressure venting of the device to ensure the safety of the device. The pressure gauge port 11, the thermometer port 15, and the liquid level gauge port 8 are used to monitor the system's pressure, temperature, liquid level and other parameters.

[0039] In actual use, the device can realize the reasonable recovery and utilization of the heat in the conversion gas and the intermediate conversion gas at the same time, and use the recovered heat to heat and pressurize the desalted water vapor to generate steam that meets the needs of subsequent processes, and flow out from the steam outlet 13 of the device for use at the rear end. The side support plates 4, support frames 5, linear rods 7, buffer springs 9, first stop rings 19 and second stop rings 21 can provide a buffer for the cylinder 16 to absorb the vibration generated during the processing operation and improve the overall stability of the cylinder 16.

[0040] 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 two-in-one heat exchanger for natural gas hydrogen production equipment, characterized in that: The two-in-one heat exchanger for natural gas hydrogen production equipment comprises: a cylinder (16), both sides of the cylinder (16) are provided with external connection cylinders (3), the cylinder (16) is provided with two groups of heat exchange tubes (27), the connection between the external connection cylinder (3) and the cylinder (16) is divided into two upper and lower cavities, namely a first cavity (26) and a second cavity (25), and the heat exchange tube (27) is connected to the two cavities; A support frame (5) is provided with a linear bearing (18) inside the support frame (5), a linear rod (7) is provided inside the linear bearing (18), a buffer spring (9) is sleeved on the linear rod (7), one end of the buffer spring (9) is fixedly connected to a first stop ring (19), and the other end of the buffer spring (9) is fixedly connected to a second stop ring (21).

2. A two-in-one heat exchanger for natural gas hydrogen production equipment according to claim 1, characterized in that: The surface of the cylinder (16) is provided with a pressure gauge port (11), a first safety valve port (12), a second safety valve port (14), a thermometer port (15), a steam outlet (13) and a liquid level gauge (8); the steam outlet (13) is located at the center axis of the cylinder (16); the first safety valve and the second safety valve are symmetrically distributed about the steam outlet (13); and the pressure gauge port (11) and the thermometer port (15) are symmetrically distributed about the steam outlet (13).

3. The two-in-one heat exchanger for natural gas hydrogen production equipment according to claim 1, characterized in that: A first sewage outlet (22), a second sewage outlet (24) and a desalted water steam inlet (23) are provided below the cylinder (16); the desalted water steam inlet (23) is located at the center axis of the cylinder (16); and the first sewage outlet (22) and the second sewage outlet (24) are symmetrically distributed with respect to the desalted water steam inlet (23).

4. The two-in-one heat exchanger for natural gas hydrogen production equipment according to claim 1, characterized in that: The outer connecting tube (3) is connected to the cylinder (16) via a flange. A conversion gas inlet (2) and a conversion gas outlet (1) are provided at the left outer connecting tube (3). The conversion gas inlet (2) is connected to the first cavity (26), and the conversion gas outlet (1) is connected to the second cavity (25). A middle conversion gas inlet (17) and a middle conversion gas outlet (10) are provided at the right outer connecting tube (3). The middle conversion gas inlet (17) is connected to the first cavity (26), and the middle conversion gas outlet (10) is connected to the second cavity (25).

5. The two-in-one heat exchanger for natural gas hydrogen production equipment according to claim 1, characterized in that: The support frame (5) is fixed to both sides of the cylinder (16) by welding, and a base (6) is fixed to the bottom of the support frame (5), and the base (6) is in the shape of a square plate.

6. The two-in-one heat exchanger for natural gas hydrogen production equipment according to claim 1, characterized in that: Both ends of the linear rod (7) are fixedly connected to the side support plates (4), and the side support plates (4) are fixed to the ground by bolts.

7. The two-in-one heat exchanger for natural gas hydrogen production equipment according to claim 1, characterized in that: The first stop ring (19) abuts against the surface of the support plate, the second stop ring (21) abuts against the surface of the side support plate (4), the surface of the first stop ring (19) is provided with an inner cavity (20), and the linear bearing (18) can be embedded in the inner cavity (20).

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