Heating device of hydrogen production device

Abstract

The invention discloses a heating device of a hydrogen production device. The heating device is made of a stainless steel material. The heating device comprises a cylindrical shell, a heat conduction oil conveying pipe, an upper perforated plate, a lower perforated plate and a plurality of heating catalysts. And the peripheral wall of the lower half part of the cylindrical shell is a double-layer wall surface. And an annular space is formed between the inner layer and the outer layer of the double-layer wall surface. And an oil inlet is formed in the outer wall surface of the double-layer wall surface. And the heat-conducting oil delivery pipe is provided with an oil outlet which can lead the heat-conducting oil in the hollow cabin out of the cylindrical shell. And the heating catalyst is arranged between the upper perforated plate and the lower perforated plate in the cylindrical shell, and when oxygen-containing fuel is fed into the cylindrical shell, an oxidation heat release effect can be generated to heat the conduction oil conveying pipe.

Description

Technical Field

[0001] The invention relates to a heating device for a hydrogen production device, which can heat heat transfer oil in a flameless state and use the heat transfer oil as a medium to transfer the heat energy required for the operation of the hydrogen production device. Background Art

[0002] Hydrogen energy vehicles are vehicles that use hydrogen fuel as a power source. This type of vehicle converts the chemical energy of hydrogen into mechanical energy. It either generates mechanical energy by burning hydrogen in an internal combustion engine, or generates electrical energy by reacting oxygen and hydrogen in a fuel cell to drive the motor. The biggest benefit of using hydrogen as an energy source is that it can effectively reduce the air pollution caused by other petroleum fuel vehicles. Currently, hydrogen is already used as a power source in transportation vehicles.

[0003] Chinese invention patent No. 1465393 discloses a "hydrogen generator and its application", which is composed of a first medium. The first medium includes: a recombination zone, an oxidation zone, a preheating zone, and a carbon monoxide removal zone. The recombination zone accommodates a recombination catalyst for the hydrogen-producing raw material to undergo a steam recombination reaction therein to produce hydrogen. An oxidation catalyst exists in the oxidation zone for an exothermic oxidation reaction to heat the first medium. The preheating zone is capable of preheating and vaporizing the hydrogen-producing raw material. The recombination zone, the oxidation zone, and the preheating zone are arranged so that the heat generated by the oxidation reaction in the oxidation zone is supplied to the preheating zone and the recombination zone, so that the hydrogen-producing raw material is preheated in the preheating zone first, and then the steam recombination reaction is carried out in the recombination zone.

[0004] In the invention patent No. 1465393, the first medium is used as the medium for heat conduction. The volume of the first medium determines the space size of the recombination zone, oxidation zone, and preheating zone. At the same time, the amount of hydrogen produced is also limited. The first medium can be made of aluminum alloy, and the processing of forming the recombination zone, oxidation zone, and preheating zone on the first medium is also more complicated, which will increase the production cost. And the volume of the first medium should not be too large, so that the hydrogen production is not enough to constitute the scale required for an industry. Summary of the invention

[0005] The main purpose of the present invention is to provide a heating device for a hydrogen production device, which mainly heats heat transfer oil so that the heat transfer oil can be used as a medium for transferring heat energy when a hydrogen production device is in operation.

[0006] Another object of the present invention is to provide a heating device for a hydrogen production device, which is made of stainless steel and is easy to process and has low manufacturing cost.

[0007] The present invention provides a heating device for a hydrogen production device, which comprises: a cylindrical shell, a heat transfer oil delivery pipe, an upper porous plate, a lower porous plate, and a plurality of heating catalysts. An air inlet is arranged at the bottom of the cylindrical shell, and an exhaust pipe is arranged at the top. The peripheral wall of the lower half of the cylindrical shell is a double-layer wall surface. An annular space is formed between the inner and outer layers of the double-layer wall surface. An oil inlet is arranged on the outer wall surface of the double-layer wall surface. The heat transfer oil delivery pipe comprises a spiral tube climbing upward and a hollow cabin body. One end of the spiral tube is connected to the annular space, and the other end is connected to the hollow cabin body. The hollow cabin body is provided with a lead-out pipe, which can lead the heat transfer oil in the hollow cabin body out of the cylindrical shell. A plurality of heating catalysts are arranged in the cylindrical shell. When the oxygen-containing fuel is fed into the cylindrical shell of the heating device, an oxidation exothermic effect is generated to heat the heat transfer oil delivery pipe.

[0008] The upper porous plate and the lower porous plate are both arranged inside the cylindrical shell. The upper porous plate and the lower porous plate are provided with a plurality of perforations for ventilation. The upper porous plate is fixedly arranged above the heat transfer oil delivery pipe. The lower porous plate is fixedly arranged below the heat transfer oil delivery pipe. The heating catalysts fill the space between the upper porous plate and the lower porous plate.

[0009] In one embodiment of the present invention, the height of the outlet pipe is higher than the upper edge of the double-layer wall.

[0010] In one embodiment of the present invention, the cylindrical housing is made of stainless steel.

[0011] In one embodiment of the present invention, the heat transfer oil delivery pipe is made of stainless steel.

[0012] In one embodiment of the present invention, the heating catalyst is a platinum catalyst. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a system using the hydrogen production device of the present invention.

[0014] Figure 2 A cross-sectional view of the heating device of the hydrogen production device of the present invention Figure 1 .

[0015] Figure 3 A cross-sectional view of the heating device of the hydrogen production device of the present invention Figure 2 .

[0016] Figure 4 for Figure 3 Schematic diagram of the AA section.

[0017] Description of Figure Numbers:

[0018] 10: Heating device; 11: Cylindrical shell; 12: Air inlet; 13: Exhaust port; 14: Heat transfer oil delivery pipe; 141: Oil inlet; 142: Oil outlet; 143: Spiral tube; 144: Hollow cabin; 145: Export pipe; 15: Heating catalyst; 151: Upper porous plate; 152: Lower porous plate; 16: Plate heat exchanger; 161: Space; 162: Space; 17: Annular space; 20: Air input device; 21: Air pump; 22: Air input pipeline; 23 : Check valve; 30: Fuel input device; 31: Fuel storage tank; 32: First liquid pump; 33: Fuel input pipeline; 34: Check valve; 40: Thermal oil delivery device; 41: Fuel storage tank; 42: Second liquid pump; 43: First thermal oil delivery pipeline; 44: Second thermal oil delivery pipeline; 45: Third thermal oil delivery pipeline; 46: Fourth thermal oil delivery pipeline; 50: Preheating device; 51: Preheated fuel water delivery pipeline; 511: First hydrogen delivery pipeline; 5111: Radiator ;5112: dehumidifier;512: second hydrogen delivery pipeline;513: third hydrogen delivery pipeline;52: barrel;521: oil inlet;522: oil outlet;523: annular space;53: preheating tube;531: feed inlet;532: outlet;60: fuel water input device;61: fuel water storage tank;62: third liquid pump;63: fuel water input pipeline;631: heat exchanger;632: input port;633: outlet;70: recombination device;71: recombination catalyst ; 72: vertical barrel body; 721: oil inlet; 722: oil outlet; 73: upper sealing plate; 731: upper mesh plate; 74: lower sealing plate; 741: lower mesh plate; 75: upright tube body; 76: closed space; 77: feed inlet; 771: porous support plate; 772: ceramic ball; 78: gas outlet; 80: hydrogen purification device; 81: recovery pipeline; 90: methanation device; 91: tube body; 92: methanation catalyst; 93: gas inlet; 94: gas outlet; 95: hydrogen storage tank. DETAILED DESCRIPTION

[0019] See also Figure 1 and Figure 2. The present invention provides a heating device for a hydrogen production device, which is mainly used to provide the heat energy required by the hydrogen production device during operation. In addition to the heating device, the hydrogen production device is also provided with: an air input device 20, a fuel input device 30, a heat transfer oil delivery device 40, a preheating device 50, a fuel water input device 60, a recombination device 70, a preheated fuel water delivery pipeline 51, a hydrogen purification device 80, a methanation device 81, a first hydrogen delivery pipeline 511, a second hydrogen delivery pipeline 512, a hydrogen storage tank 55, and a third hydrogen delivery pipeline 513. The heating device 10 can heat the heat transfer oil. The heated heat transfer oil is sent into the preheating device 50 to preheat the fuel water for vaporization. The high-temperature heat transfer oil is sent into the recombination device 70, which enables the recombination catalyst 71 in the recombination device 70 to carry out molecular recombination of the preheated vaporized fuel water at high temperature to produce gas containing hydrogen. The hydrogen purification device 80 can screen out gas containing 99.999% hydrogen and a trace amount of carbon monoxide. The methanation device can remove carbon monoxide and produce hydrogen without carbon monoxide.

[0020] See also Figure 2 to Figure 4 The heating device 10 includes: a cylindrical shell 11, a heat transfer oil delivery pipe 14, an upper porous plate 151, a lower porous plate 152, and a plurality of heating catalysts 15. The cylindrical shell 11 includes an air inlet 12 and an exhaust pipe 13. The air inlet 12 is arranged at the bottom of the cylindrical shell 11. The exhaust pipe 13 is arranged at the top of the cylindrical shell 11. The peripheral wall of the lower half of the cylindrical shell 11 is a double-layer wall. An annular space 17 is formed between the inner and outer layers of the double-layer wall. The outer wall surface of the double-layer wall is provided with an oil inlet 141. The heat transfer oil delivery pipe 14 is arranged inside the cylindrical shell 11.

[0021] The air inlet 12 of the cylindrical shell 11 is arranged at the bottom of the cylindrical shell 11, so most of the oxygen-containing fuel generates oxidation heat in the lower half of the cylindrical shell 11, making the temperature of the lower half of the cylindrical shell 11 higher. The double-layer wall design is mainly to allow the relatively low-temperature heat transfer oil that has not yet entered the cylindrical shell 11 to slightly reduce the temperature of the lower half of the cylindrical shell 11.

[0022] The heat transfer oil delivery pipe 14 includes a spiral tube 143 that rises upward and a hollow cabin 144. The hollow cabin 144 is arranged at the central position of the spiral tube 143. One end of the spiral tube 143 is connected to the annular space 17 of the cylindrical shell 11. The other end of the spiral tube 143 is connected to the hollow cabin 144. The hollow cabin 144 is provided with a lead-out pipe 145, and the lead-out pipe 145 passes through the cylindrical shell 11. The end of the lead-out pipe 145 is an oil outlet 142, which can lead the heat transfer oil in the hollow cabin 144 out of the cylindrical shell 11.

[0023] The upper porous plate 151 and the lower porous plate 152 are both disposed inside the cylindrical shell 11. The upper porous plate 151 is evenly provided with a plurality of ventilation holes and is fixedly disposed above the heat transfer oil delivery pipe 14. The lower porous plate 152 is evenly provided with a plurality of ventilation holes and is fixedly disposed below the heat transfer oil delivery pipe 14. The heating catalysts 15 are disposed between the upper porous plate 151 and the lower porous plate 152 and fill the space between the upper porous plate 151 and the lower porous plate 152.

[0024] The air input device 20 includes: an air pump 21, an air input pipeline 22, and a check valve 23. The air input pipeline 22 is connected to the air inlet 12 of the heating device 10. The fuel input device 30 includes: a fuel storage tank 31, a first liquid pump 32, a fuel input pipeline 33, and a check valve 34. The first liquid pump 32 can deliver organic fuel (for example, methanol) into the heating device 10. In practice, the end of the fuel input pipeline 33 is connected to the air input pipeline 22. When the first liquid pump 32 is activated, the organic fuel can be sprayed into the air input pipe 22, and then the oxygen-containing fuel mixed with the organic fuel and air is delivered into the heating device 10 together with the air pump 21. The oxygen-containing fuel will produce an oxidative exothermic effect when it encounters the heating catalyst 15.

[0025] The heat transfer oil delivery device 40 includes: an oil storage barrel 41, a second liquid pump 42, a first heat transfer oil delivery pipeline 43, a second heat transfer oil delivery pipeline 44, a third heat transfer oil delivery pipeline 45, and a fourth heat transfer oil delivery pipeline 46. The two ends of the first heat transfer oil delivery pipeline 43 are respectively connected to the oil storage barrel 41 and the heat transfer oil delivery pipe 14 of the heating device. That is, one end of the first heat transfer oil delivery pipeline 43 is connected to the oil inlet 141 of the heat transfer oil delivery pipe 14 in the heating device 10. The second liquid pump 42 is arranged on the first heat transfer oil delivery pipeline 43.

[0026] The preheating device 50 includes: a barrel 52 with both ends closed, and a spiral preheating pipe 53. One end of the second heat transfer oil delivery pipeline 44 is connected to the oil outlet 142 of the heat transfer oil delivery pipe 14 inside the heating device 10, and the other end is connected to the internal space of the barrel 52. The preheating pipe 53 is provided with a feed port 531 and a discharge port 532. The feed port 531 and the discharge port 532 are respectively passed through the barrel 52.

[0027] When the temperature in the heating device 10 reaches the set temperature, it means that the temperature of the heat transfer oil in the heat transfer oil delivery pipe 14 in the heating device 10 has reached the temperature required for operation. The second liquid pump 42 is activated to send the heat transfer oil in the heat transfer oil delivery pipe 14 in the heating device 10 along the second heat transfer oil delivery pipeline 44 into the barrel 52 of the preheating device 50 to heat the preheating pipe 53. The barrel 52 is provided with an oil inlet 521 and an oil outlet 522.

[0028] The fuel water input device 60 includes: a fuel water storage tank 61, a third liquid pump 62, a fuel water input pipeline 63, and a check valve 64. The end of the fuel water input pipeline 63 is connected to the feed port 531 of the preheating pipe 53 in the preheating device 50. When the heat transfer oil in the barrel 52 of the preheating device 50 heats the preheating pipe 53, the fuel water in the preheating pipe 53 can be vaporized. The third liquid pump 62 can deliver fuel water (for example, methanol aqueous solution) along the fuel water input pipeline 63 into the preheating pipe 53 in the preheating device 50.

[0029] The reorganization device 70 includes: a vertical barrel body 72, an upper sealing plate 73, a lower sealing plate 74, and a number of upright tubes 75. The upper sealing plate 73 and the lower sealing plate 74 are arranged in the vertical barrel body 72, so that a closed space 76 is formed between the upper sealing plate 73 and the lower sealing plate 74. The upper and lower ends of each upright tube body 75 pass through the upper sealing plate 73 and the lower sealing plate 74 respectively, and a plurality of reorganization catalysts 71 are arranged in each upright tube body 75. The reorganization catalyst 71 can be a copper-zinc catalyst. One end of the third heat transfer oil delivery pipeline 45 is connected to the inside of the barrel body 52 of the preheating device 50, and the other end is connected to the closed space 76 in the reorganization device 70. The heat transfer oil in the closed space 76 can heat each upright tube body 75. A lower mesh plate 741 is arranged below the lower sealing plate 74 of the reorganization device 70. A mesh plate 731 is disposed above the upper sealing plate 73. The mesh plate 731 and the lower mesh plate 741 can prevent the recombination catalyst 71 from escaping from the upright tube 75.

[0030] The vertical barrel body 72 of the recombination device 70 is provided with: an oil inlet 721, an oil outlet 722, a feed port 77, and an air outlet 78. The oil inlet 721 is connected to the third heat transfer oil delivery pipeline 45. The oil outlet 722 is connected to the fourth heat transfer oil delivery pipeline 46. A porous support plate 771 is provided inside the feed port 77. A plurality of ceramic balls 772 are provided above the porous support plate 771. After the vaporized fuel water passes through the ceramic balls 771, it can be evenly distributed and evenly enters each upright tube body 75 to perform molecular recombination.

[0031] One end of the preheated fuel water delivery pipeline 51 is connected to the discharge port 532 of the preheating pipe 53 in the preheating device 50, and the other end is connected to the air inlet 77 of the recombination device 70, so that the vaporized fuel water can be delivered to each upright tube body 75. The vaporized fuel water undergoes molecular recombination under the action of the recombination catalyst 71 at high temperature in each upright tube body 75 to produce a mixed gas containing hydrogen and other gases. One end of the fourth heat transfer oil delivery pipeline 46 is connected to the closed space 76 in the recombination device 70, and the other end is connected to the oil storage barrel 41. The heat transfer oil with gradually decreasing temperature can be delivered back to the oil storage barrel 41 along the fourth heat transfer oil delivery pipeline 46.

[0032] The hydrogen purification device 80 is a molecular sieve device (PSA). One end of the first hydrogen delivery pipeline 511 is connected to each upright tube 75 of the recombination device 70, and the other end is connected to the hydrogen purification device 80. The mixed gas containing hydrogen produced by the recombination device 70 can be delivered to the hydrogen purification device 80 along the first hydrogen delivery pipeline 511. The gas outlet 78 of the recombination device 70 is connected to the first hydrogen delivery pipeline 511. The hydrogen purification device 80 can screen out hydrogen and carbon monoxide in the mixed gas. The waste gas generated when the hydrogen purification device 80 is in operation can be delivered to the heating device 10 through a recovery pipeline 81 for reuse. A radiator 5111 and a dehumidifier 5112 can be provided on the first hydrogen delivery pipeline 511.

[0033] The methanation device 90 includes: a tube body 91 extending in a straight line, and a plurality of methanation catalysts 92 arranged in the upright tube body 92. The methanation catalyst 92 can be a nickel-based catalyst. The tube body 91 passes through the center of the barrel body 52 of the preheating device 50. The inner space of the tube body 91 of the methanation device 90 is separated from the inner space of the barrel body 52 and is not connected to each other, so that the inner space of the barrel body 52 forms an annular space 523. An air inlet 93 and an air outlet 94 are respectively provided at both ends of the tube body 91. One end of the second hydrogen delivery pipeline 512 is connected to the hydrogen purification device 80, and the other end is connected to the air inlet 93 of the tube body 91. The hydrogen and carbon monoxide screened by the hydrogen purification device 80 are sent to the tube body 91 of the methanation device 90 along the second hydrogen delivery pipeline 512. Under the action of the methanation catalyst 92, carbon monoxide gas is removed to generate pure hydrogen. One end of the third hydrogen delivery pipeline 513 is connected to the gas outlet 94 of the pipe body 91 of the methanation device 90, and the other end is connected to the hydrogen storage tank 95. The pure hydrogen can be transported along the third hydrogen delivery pipeline 513 to the hydrogen storage tank 95 for storage.

[0034] The hydrogen production device further includes a plate heat exchanger 16. The plate heat exchanger 16 is provided with two independent first spaces 161 and second spaces 162. The fuel delivery pipeline 33 flows through the first space 161 of the plate heat exchanger 16. The exhaust pipe 13 flows through the second space 162 of the plate heat exchanger 16. The heat of the exhaust gas discharged from the exhaust pipe 13 can produce a preliminary heating effect on the fuel.

[0035] The fuel water input pipeline 63 further includes a heat exchanger 631. The heat exchanger 631 is an integral annular container. The heat exchanger 631 is provided with a fuel water input port 632 and an organic fuel water output port 633. The first hydrogen delivery pipeline 511 and the third hydrogen delivery pipeline 513 both penetrate into and pass through the interior of the heat exchanger 631 to preliminarily heat the fuel water and reduce the temperature of the hydrogen-containing gas and the pure hydrogen gas.

[0036] In summary, the heating device of the hydrogen production device provided by the present invention has a simple structure and is made of stainless steel material, which has low material cost and is easy to process, thereby reducing the manufacturing cost and making it more competitive in the market.

Claims

1. A heating device for a hydrogen production device, characterized in that: Include: A cylindrical shell, comprising an air inlet and an exhaust pipe; the air inlet is arranged at the bottom of the cylindrical shell; the exhaust pipe is arranged at the top of the cylindrical shell; the peripheral wall of the lower half of the cylindrical shell is a double-layer wall; an annular space is formed between the inner and outer layers of the double-layer wall; an oil inlet is arranged on the outer wall of the double-layer wall; A heat transfer oil delivery pipe is arranged inside the cylindrical shell; the heat transfer oil delivery pipe includes: a spiral tube climbing upward, and a hollow cabin; the hollow cabin is arranged at the central position of the spiral tube; one end of the spiral tube is connected to the annular space of the cylindrical shell; the other end of the spiral tube is connected to the hollow cabin; the hollow cabin is provided with a lead-out pipe, which passes through the cylindrical shell; the end of the lead-out pipe is an oil outlet, which can lead the heat transfer oil in the hollow cabin out of the cylindrical shell; An upper porous plate is arranged inside the cylindrical shell; a plurality of ventilation holes are evenly arranged on the upper porous plate; the upper porous plate is fixed above the heat transfer oil delivery pipe; A lower porous plate is arranged inside the cylindrical shell; a plurality of ventilation holes are evenly arranged on the lower porous plate; the lower porous plate is fixedly arranged below the heat transfer oil delivery pipe; and, A plurality of heating catalysts are arranged between the upper porous plate and the lower porous plate and fill up the space between the upper porous plate and the lower porous plate.

2. The heating device of the hydrogen production device according to claim 1, characterized in that: The height of the outlet pipe is higher than the upper edge of the double-layer wall.

3. The heating device of the hydrogen production device according to claim 1, characterized in that: The cylindrical shell is made of stainless steel.

4. The heating device of the hydrogen production device according to claim 1, characterized in that: The heat transfer oil delivery pipe is made of stainless steel.

5. The heating device of the hydrogen production device according to claim 1, characterized in that: The heating catalyst is a platinum catalyst.

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