Methanol water reforming hydrogen production reformer device

Abstract

The utility model provides a reformer device for hydrogen production by reforming methanol water. The reformer device for hydrogen production through methanol water reforming comprises a reaction cylinder, a ceramic heating ring used for heating is installed on the surface of the reaction cylinder, a spiral stainless steel heating pipe used for preheating methanol is wound on the surface of the ceramic heating ring, and the bottom end of the stainless steel heating pipe is connected with the interior of the reaction cylinder; a heat insulation plate is mounted at the top end of the reaction cylinder, and a spiral condensation copper pipe is mounted in the heat insulation plate; a zeolite layer for uniformly vaporizing a methanol aqueous solution is arranged at the bottom end of the reaction cylinder, a separation net is arranged between the zeolite layer and the catalyst layer, and the separation net and the catalyst layer are positioned in the reaction cylinder. The methanol water reforming hydrogen production reformer device provided by the utility model has the advantages of small equipment volume, full utilization of heat and uniform vaporization of a methanol water solution.

Description

Technical Field

[0001] The utility model relates to the technical field of methanol hydrogen production, in particular to a methanol water reforming hydrogen production reformer device. Background Art

[0002] With the development of science and technology and the continuous progress of society, energy consumption is increasing. The use of a large amount of fossil fuels has led to increasingly serious environmental problems such as the greenhouse effect, prompting people to look for new renewable energy sources. The high calorific value and pollution-free characteristics of hydrogen have attracted widespread attention, making people pay attention to the research on hydrogen production devices.

[0003] Methanol has a high mass hydrogen storage density and is a good way to produce hydrogen. There are three methods for producing hydrogen from methanol: methanol steam reforming (SRM), methanol oxidation reforming (OMR) and methanol partial oxidation reforming. Among them, methanol steam reforming (SRM) technology is more mature, with a hydrogen production rate of up to 75%. However, the current methanol steam reforming device is large in size, takes a long time to start, and consumes a lot of energy, so it has not been widely used in mobile vehicles. The reforming hydrogen production process is a highly endothermic reaction in thermodynamics, with an operating temperature of 280°C, so it requires a lot of energy, and it still needs to be heated continuously during the reaction process. When the demand for hydrogen supply increases, the energy required for the device body also increases accordingly.

[0004] Therefore, it is necessary to provide a new methanol-water reforming hydrogen production reformer device to solve the above technical problems. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a methanol water reforming hydrogen production reformer device which has small equipment volume, fully utilizes heat and can make methanol water solution vaporize evenly.

[0006] In order to solve the above technical problems, the utility model provides a methanol water reforming hydrogen production reformer device comprising: a reaction tube, a ceramic heating ring for heating is installed on the surface of the reaction tube, a spiral stainless steel heating tube for preheating methanol is wound around the surface of the ceramic heating ring, and the bottom end of the stainless steel heating tube is connected to the inside of the reaction tube; a heat insulation board is installed on the top of the reaction tube, and a spiral condensing copper tube is installed inside the heat insulation board; a zeolite layer is formed at the bottom of the reaction tube to evenly vaporize the methanol-water solution, a partition net is installed between the zeolite layer and the catalyst layer, and the partition net and the catalyst layer are located inside the reaction tube.

[0007] Preferably, a cylinder is installed on the surface of the heat insulation board, and the condensing copper tube is arranged inside the cylinder.

[0008] Preferably, the cylinder is connected to a water tank via a water inlet pipe and a water return pipe, and the water tank has an internal circulation pump, and the circulation pump is connected to the water inlet pipe.

[0009] Preferably, the bottom end of the reaction cylinder is fixedly connected to a fixed tube, and the fixed tube is connected to the inside of the condensation copper tube.

[0010] Preferably, the top end of the fixed tube is fixed by a bracket to a fixing head with a hemispherical top end, the top end of the fixing head abuts against the partition net, and the bottom end side wall of the fixing head is an arc-shaped structure.

[0011] According to the methanol water reforming hydrogen production reformer device according to claim, it is characterized in that a plurality of guide plates with arc-shaped side walls are installed on the side wall of the fixed head, and the side wall of the guide plate is provided with a groove.

[0012] Preferably, the guide plate is located inside the zeolite layer, and the width of the guide plate gradually decreases along the direction from the fixing head to the side wall of the reaction cylinder.

[0013] Compared with the related art, the methanol-water reforming hydrogen production reformer device provided by the utility model has the following beneficial effects:

[0014] The utility model provides a reformer device for hydrogen production by reforming methanol water, wherein the reaction tube is heated by the ceramic heating ring, the ceramic heating ring is entirely wrapped around the outside of the reaction tube, and the reaction tube is heated uniformly without cold spots; the heat of the ceramic heating ring is fully utilized, a part of the heat provided by the ceramic heating ring is transferred to the reaction tube to heat the catalyst, and the other part is transferred to the stainless steel heating tube to preheat the methanol solution inside the reaction tube; the preheated methanol solution enters the interior of the reaction tube and contacts the zeolite, the methanol solution will be adsorbed by the zeolite, and then quickly and uniformly vaporized at high temperature and enters the catalyst; the zeolite has adsorption separation, reversible dehydration, and its porous silicate structure. When heated, the gas in the small pores escapes, playing the role of vaporization nucleus, so that the vaporization is more sufficient and more uniform. In the production process, the heating hydrogen production and the condensation gas are used together in the same device, so that the structure is compact, the device volume is small, and the liquid inlet method from bottom to top fully prevents the incompletely vaporized solution from contacting the catalyst, so that the reaction is not complete, and it is more practical in the case of small flow liquid inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a reformer device for producing hydrogen through reforming methanol with water provided by the utility model;

[0016] Figure 2 for Figure 1 The schematic diagram of the internal structure of the reaction tube shown;

[0017] Figure 3 for Figure 2 An enlarged schematic diagram of the structure at A shown;

[0018] Figure 4 for Figure 4 Bottom view of the fixed head structure shown.

[0019] Numbers in the figure: 1. reaction cylinder, 2. stainless steel heating tube, 3. ceramic heating coil, 4. heat insulation board, 5. condensing copper tube, 6. cylinder, 7. water tank, 8. circulation pump, 9. water inlet pipe, 10. water return pipe, 11. fixed pipe, 12. zeolite layer, 13. partition net, 14. catalyst layer, 15. guide plate, 16. groove, 17. fixed head, 18. bracket. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0021] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 .in Figure 1 A schematic diagram of the structure of a reformer device for producing hydrogen through reforming methanol with water provided by the utility model; Figure 2 for Figure 1 The schematic diagram of the internal structure of the reaction tube shown; Figure 3 for Figure 2 An enlarged schematic diagram of the structure at A shown; Figure 4 for Figure 4 A methanol water reforming hydrogen production reformer device comprises: a reaction tube 1, a ceramic heating coil 3 for heating is installed on the surface of the reaction tube 1, a spiral stainless steel heating tube 2 for preheating methanol is wound on the surface of the ceramic heating coil 3, and the bottom end of the stainless steel heating tube 2 is connected to the inside of the reaction tube 1; the reaction tube 1 is heated by the ceramic heating coil 3, and the ceramic heating coil 3 is wrapped around the outside of the reaction tube 1 as a whole, and the reaction tube 1 is heated evenly without cold spots.

[0022] The bottom end of the reaction tube 1 makes the methanol aqueous solution vaporize evenly in the zeolite layer 12, and a partition 13 is installed between the zeolite layer 12 and the catalyst layer 14, and the partition 13 and the catalyst layer 14 are located inside the reaction tube 1. The top of the reaction tube 1 is installed with a heat insulation board 4, and the inside of the heat insulation board 4 is installed with a spiral condensing copper tube 5; the heat of the ceramic heating coil 3 is fully utilized, and part of the heat provided by the ceramic heating coil 3 is transferred to the inside of the reaction tube 1 to heat the catalyst, and the other part is transferred to the stainless steel heating tube 2 to preheat the methanol solution inside it.

[0023] The surface of the insulation board 4 is installed with a cylinder 6, and the insulation board 6 blocks the heat inside the reaction cylinder 1 from entering the inside of the cylinder 6. The condensing copper tube 5 is arranged inside the cylinder 6; the cylinder 6 is connected to the water tank 7 through the water inlet pipe 9 and the return pipe 10, and the water tank 7 has an internal circulation pump 8, and the circulation pump 8 is connected to the water inlet pipe 9. The hydrogen-rich gas generated by the catalytic conversion reaction enters the inside of the condensing steel tube 5. Since the hydrogen-rich gas has a very high temperature, the hydrogen-rich gas spirally moves upward inside the condensing steel tube 5. At this time, the circulation pump 8 draws the cold water inside the water tank 7 into the inside of the cylinder 6 through the water inlet pipe 9. The water inside the cylinder 6 absorbs the heat inside the hydrogen-rich gas and reduces the heat of the hydrogen-rich gas. The water inside the cylinder 6 flows into the inside of the water tank 7 again through the return pipe 10 for reuse.

[0024] The bottom end of the reaction tube 1 is fixedly connected to a fixed tube 11, and the fixed tube 11 is connected to the inside of the condensation copper tube 5. The top of the fixed tube 11 is fixed with a hemispherical fixed head 17 by a bracket 18, and the top of the fixed head 17 contacts the partition net 13. The side wall of the fixed head 17 is installed with a plurality of guide plates 15 with arc-shaped side walls, and the side wall of the guide plate 15 is provided with a groove 16. The guide plate 15 is located inside the zeolite layer 12, and the width of the guide plate 15 gradually decreases along the direction of the fixed head 17 toward the side wall of the reaction tube 1; the methanol solution after preheating flows out through the fixed tube 11 and contacts with the fixed head 17, so that the solution flows outward along the side wall of the fixed head 17, and the bottom side wall of the fixed head 17 is an arc-shaped structure, which is convenient for the solution to continue the side wall of the fixed head 17 to flow outward and contact the zeolite, and the side wall of the fixed head 17 is installed with a plurality of guide plates 15, so that the fixed head 1 The solution on the side wall moves along the guide plate 15, and the guide plate 15 is provided with the groove 16 inside, so that the solution can move along the side wall of the guide plate 15, and the zeolite can be prevented from blocking the solution from moving along the guide plate 15, so that the solution can move in an arc along the guide plate 15, thereby increasing the flow area of ​​the solution and making the solution contact with the zeolite uniformly. The zeolite has adsorption separation and reversible dehydration properties, and its porous silicate structure can release the gas in the small pores when heated, playing the role of vaporization nucleus, so that the vaporization is more complete and uniform.

[0025] A methanol-water reforming hydrogen production reformer device has the following working principle: methanol and water are configured into a solution according to a certain water-to-alcohol ratio, and are pumped into the stainless steel heating tube 2 through a peristaltic pump. The ceramic heating coil 3 starts to heat up when connected to an external power supply, and the solution is preheated by using the heat from the external waste heat of the ceramic heating coil 3 to be transferred to the stainless steel heating tube 2; the preheated methanol solution flows out through the fixed tube 11 and contacts the fixed head 17, so that the solution flows outward along the side wall of the fixed head 17; the bottom side wall of the fixed head 17 is in an arc-shaped structure, which facilitates the solution to continue to flow outward along the side wall of the fixed head 17 and contact with zeolite; a plurality of guide plates 15 are installed on the side wall of the fixed head 17, so that the solution on the side wall of the fixed head 17 moves along the guide plate 15, and the guide plate 15 is provided with the groove 16 inside, so that the solution moves along the side wall of the guide plate 15, and the zeolite prevents the solution from blocking the movement of the solution along the guide plate 15, so that the solution moves in an arc along the guide plate 15, thereby increasing the flow area of ​​the solution. , so that the solution is evenly in contact with the zeolite. The zeolite has adsorption separation and reversible dehydration. Its porous silicate structure allows the gas in the small pores to escape when heated, playing the role of vaporization nuclei, so that the vaporization is more sufficient and more uniform; a catalyst layer 14 is placed inside the reaction tube 1, and the ceramic heating ring 3 heats the catalyst. The vaporized methanol water vapor encounters the catalyst and completes the catalytic conversion reaction at a temperature of 280°C to generate hydrogen-rich gas; the hydrogen-rich gas generated by the catalytic conversion reaction enters the interior of the condensation steel pipe 5. Since the hydrogen-rich gas has a very high temperature, the hydrogen-rich gas spirally moves upward inside the condensation steel pipe 5. The circulation pump 8 is powered on and operates. The circulation pump 8 passes the cold water inside the water tank 7 into the interior of the cylinder 6 through the water inlet pipe 9. The water inside the cylinder 6 absorbs the heat inside the hydrogen-rich gas and reduces the heat of the hydrogen-rich gas. The water inside the cylinder 6 flows into the interior of the water tank 7 again through the return pipe 10 for reuse.

[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A methanol-water reforming hydrogen production reformer device, characterized in that: include: A reaction cylinder (1), wherein a ceramic heating ring (3) for heating is installed on the surface of the reaction cylinder (1), a spiral stainless steel heating tube (2) for preheating methanol is wound around the surface of the ceramic heating ring (3), and the bottom end of the stainless steel heating tube (2) is connected to the inside of the reaction cylinder (1); a heat insulation board (4) is installed on the top end of the reaction cylinder (1), and a spiral condensing copper tube (5) is installed inside the heat insulation board (4); The bottom end of the reaction cylinder (1) is provided with a zeolite layer (12) in which the methanol aqueous solution is uniformly vaporized, a partition (13) is installed between the zeolite layer (12) and the catalyst layer (14), and the partition (13) and the catalyst layer (14) are located inside the reaction cylinder (1).

2. The methanol-water reforming hydrogen production reformer device according to claim 1, characterized in that: A cylinder (6) is installed on the surface of the heat insulation board (4), and the condensing copper tube (5) is arranged inside the cylinder (6).

3. The methanol-water reforming hydrogen production reformer device according to claim 2, characterized in that: The cylinder (6) is connected to a water tank (7) via a water inlet pipe (9) and a water return pipe (10), and the water tank (7) has an internal circulation pump (8), and the circulation pump (8) is connected to the water inlet pipe (9).

4. The methanol-water reforming hydrogen production reformer device according to claim 1, characterized in that: The bottom end of the reaction cylinder (1) is fixedly connected to a fixed tube (11), and the fixed tube (11) is connected to the inside of the condensation copper tube (5).

5. The methanol-water reforming hydrogen production reformer device according to claim 4, characterized in that: The top end of the fixed tube (11) is fixed to a fixing head (17) having a hemispherical top end through a bracket (18), the top end of the fixing head (17) abuts against the partition net (13), and the bottom end side wall of the fixing head (17) is an arc-shaped structure.

6. The methanol-water reforming hydrogen production reformer device according to claim 5, characterized in that: A plurality of guide plates (15) with arc-shaped side walls are installed on the side walls of the fixed head (17), and grooves (16) are provided on the side walls of the guide plates (15).

7. The methanol-water reforming hydrogen production reformer device according to claim 6, characterized in that: The guide plate (15) is located inside the zeolite layer (12), and the width of the guide plate (15) gradually decreases along the direction from the fixed head (17) toward the side wall of the reaction cylinder (1).

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