CN217757343U - Supercritical water hydrogen production device - Google Patents
Supercritical water hydrogen production device Download PDFInfo
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- CN217757343U CN217757343U CN202122836859.4U CN202122836859U CN217757343U CN 217757343 U CN217757343 U CN 217757343U CN 202122836859 U CN202122836859 U CN 202122836859U CN 217757343 U CN217757343 U CN 217757343U
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The utility model discloses a supercritical water hydrogen production device, which comprises a supercritical boiler, an air flotation bed reaction kettle and a reaction material feeding device, wherein the supercritical boiler provides supercritical water; the reaction material feeding device receives the reaction materials and discharges the reaction materials; reaction material and supercritical water that reaction material feeding device discharged mix and get into air supporting bed reation kettle, and in air supporting bed reation kettle, reaction material and supercritical water reaction generate supercritical mixture, and supercritical mixture contains supercritical carbon dioxide, supercritical hydrogen, the supercritical water that has not reacted, and the supercritical mixture of production discharges from air supporting bed reation kettle. The utility model does not need to prepare pure oxygen or externally arrange electric heating, the system control is simple, and the hydrogen production cost is lower; the whole process only uses supercritical water as a heat source, does not need to add air or oxygen, has no explosion danger and has higher safety; the produced hydrogen and carbon dioxide are in supercritical state, and liquid carbon dioxide and hydrogen can be obtained only by expansion and temperature reduction, thus thoroughly solving the problem of hydrogen transportation.
Description
Technical Field
The utility model belongs to the technical field of hydrogen manufacturing, concretely relates to supercritical water hydrogen plant.
Background
Since the use of fire, people all use carbon-based fuels such as coal, petroleum, biomass, garbage and the like to extract energy in an oxygen-enriched (air) combustion mode.
Traditional chemical industry coal gasification mode all adopts the pure oxygen as the gasification agent, adds water through the pure oxygen and generates carbon monoxide, hydrogen etc. under the condition of oxygen deficiency burning, and this mode needs the water to spray purification gasification gas and helps arranging the sediment, can lead to a large amount of water pollution, and the inefficiency is less than 60% simultaneously, causes a large amount of energy extravagant.
The traditional hydrogen production by electrolyzing water has high hydrogen production cost, low hydrogen pressure and difficult pressurization and liquefaction, is difficult to solve the transportation problem of hydrogen energy, and cannot support the rapid development of the hydrogen energy industrial chain.
The traditional supercritical water coal steaming mode adopts an electric heating or oxygen adding combustion mode to provide reaction heat in order to solve the endothermic energy of water and coal reaction.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a supercritical water hydrogen production apparatus without preparing pure oxygen or external electric heating, using supercritical water as heat source, under supercritical state, supercritical water reacts with reaction material to realize hydrogen production.
Realize the technical scheme of the utility model as follows
A device for producing hydrogen by supercritical water comprises a supercritical boiler, an air-float bed reaction kettle and a reaction material feeding device, wherein the supercritical boiler provides supercritical water;
the reaction material feeding device receives the reaction materials and discharges the reaction materials;
reaction material and supercritical water that reaction material feeding device discharged mix and get into air supporting bed reation kettle, and in air supporting bed reation kettle, reaction material and supercritical water reaction generate supercritical mixture, and supercritical mixture contains supercritical carbon dioxide, supercritical hydrogen, the supercritical water that has not reacted, and the supercritical mixture of production discharges from air supporting bed reation kettle.
The device also comprises a fixed bed reaction kettle and a middle transition ash bin, wherein the discharge end of the air floatation bed reaction kettle is communicated with the inlet end of the fixed bed reaction kettle, the supercritical mixture discharged from the air floatation bed reaction kettle enters the fixed bed reaction kettle for continuous reaction, and after the reaction is finished, the supercritical mixture is discharged from the discharge end of the fixed bed reaction kettle;
the slag discharge port of the fixed bed reaction kettle is communicated with the intermediate transition ash bin, a discharge control valve for controlling ash in the fixed bed reaction kettle to enter the intermediate transition ash bin is arranged between the slag discharge port of the fixed bed reaction kettle and the intermediate transition ash bin, and a slag discharge control valve for controlling the discharge of the ash in the intermediate transition ash bin is arranged at the slag discharge port of the intermediate transition ash bin.
The reaction material feeding device comprises a hopper, an intermediate transition bin and a feeding valve, wherein a feeding port is arranged on the hopper, the lower part of the hopper is communicated with the top of the intermediate transition bin, and a control valve for controlling the reaction materials in the hopper to enter the intermediate transition bin is arranged between the hopper and the intermediate transition bin; the feeding valve is arranged at the discharge end of the intermediate transition bin to control the discharge of reaction materials in the intermediate transition bin.
Reaction materials discharged by the reaction material feeding device and supercritical water discharged by the supercritical boiler are injected by the injector and then enter the air-floating bed reaction kettle from the bottom of the air-floating bed reaction kettle.
The device also comprises a water melting tank, a first heat exchanger and a second heat exchanger, wherein the water melting tank is internally stored with melting water;
the discharge end of the water dissolving tank is communicated with the heat-obtaining inlet end of the first heat exchanger, the heat-obtaining discharge end of the first heat exchanger is communicated with the heat-obtaining inlet end of the second heat exchanger, and the heat-obtaining discharge end of the second heat exchanger is communicated with the supercritical water pipeline in the supercritical boiler;
the temperature in the first heat exchanger is lower than the temperature in the second heat exchanger; the temperature of the water in the water tank is gradually increased after the water passes through the first heat exchanger and the second heat exchanger.
The device still includes liquid carbon dioxide storage tank, hydrogen storage tank, and fixed bed reation kettle's discharge end forms the intercommunication with the heat supply inlet end of second heat exchanger, and the heat supply discharge end of second heat exchanger forms the intercommunication with the heat supply inlet end of first heat exchanger, and the heat supply discharge end of first heat exchanger is provided with two the tunnel, and with hydrogen storage tank intercommunication all the way, during gaseous hydrogen gets into the hydrogen storage tank, another way forms the intercommunication with the liquid carbon dioxide storage tank, supplies during liquid carbon dioxide gets into the liquid carbon dioxide storage tank.
The utility model provides a under water supercritical state, react reaction material (coal and/or living beings and/or rubbish) and supercritical water and generate hydrogen and carbon dioxide, the supercritical water that is sent into by supercritical boiler in the reaction process provides the required heat of gasification reaction, has realized changing the chemical energy of coal (living beings, rubbish etc.) into hydrogen energy, realizes the hydrogen manufacturing purpose. The hydrogen production device has the following advantages:
1. the utility model discloses need not to prepare pure oxygen or external electrical heating, system control is simple, and the hydrogen manufacturing cost is lower.
2. The gasification method only uses supercritical water as a heat source in the whole process, does not need to add air or oxygen, has no explosion hazard and has higher safety.
3. The utility model discloses the hydrogen and the carbon dioxide of production are supercritical state, only need the inflation cooling can obtain liquid carbon dioxide and hydrogen, thoroughly solve the hydrogen transportation difficult problem.
Drawings
FIG. 1 is a schematic structural view of the hydrogen production apparatus of the present invention;
in the attached figure 1, 100 parts of a supercritical boiler, 101 parts of an air-float bed reaction kettle, 102 parts of a reaction material feeding device, 103 parts of a fixed bed reaction kettle, 104 parts of a middle transition ash bin, 105 parts of a filter, 106 parts of a discharge control valve, 107 parts of a slag discharge control valve, 108 parts of a hopper, 109 parts of a middle transition bin, 110 parts of a feeding valve, 111 parts of a control valve, 112 parts of an ejector, 113 parts of a water melting tank, 114 parts of a first heat exchanger, 115 parts of a second heat exchanger, 116 parts of a liquid carbon dioxide storage tank, 117 parts of a hydrogen storage tank.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, a supercritical water hydrogen production apparatus includes a supercritical boiler 100, an air-flotation bed reactor 101, and a reactant feeding device 102, where the supercritical boiler 100 provides supercritical water, that is, external water passes through the supercritical boiler 100 to form supercritical pressure and temperature, and then is fed into the air-flotation bed reactor 101 to provide supercritical reaction conditions.
The reaction material feeding device receives the reaction materials and discharges the reaction materials, and the reaction materials can be carbonaceous solid materials such as coal and/or biomass and/or garbage. And after the reaction materials are dried, forming dry materials and feeding the dry materials into a reaction material feeding device.
Reaction material and supercritical water that reaction material feeding device discharged mix and get into air supporting bed reation kettle 101, and in air supporting bed reation kettle 101, reaction material and supercritical water reaction generate supercritical mixture body, and supercritical mixture body contains supercritical carbon dioxide, supercritical hydrogen, the supercritical water that has not reacted, and the supercritical mixture body of production discharges from air supporting bed reation kettle 101.
One embodiment in this application: the device also comprises a fixed bed reaction kettle 103 and a middle transition ash bin 104, wherein the discharge end of the air-floating bed reaction kettle 101 is communicated with the inlet end at the bottom of the fixed bed reaction kettle 103, the supercritical mixture discharged from the air-floating bed reaction kettle 101 enters the fixed bed reaction kettle 103 for continuous reaction, after the reaction is finished, the generated gas is discharged from the discharge end of the fixed bed reaction kettle 103, and the formed ash falls towards the bottom of the fixed bed reaction kettle 103 under the action of gravity; from the air supporting bed reation kettle 101 exhaust mixture, continue the reaction in fixed bed reation kettle 103, make the reaction more complete, can add filter 105 in fixed bed reation kettle 103 or outside, reduce the discharge of adulterating other objects in the discharge mixture, promote the purity of discharge mixture. The air-floating bed reaction kettle is combined with the fixed bed reaction kettle 103, and the double advantages of high reaction rate of the air-floating bed and high gasification rate of the fixed bed are compatible, so that the completeness of the reaction and the generation rate of hydrogen are ensured.
One embodiment in this application: a slag discharge port of the fixed bed reaction kettle 103 is communicated with the intermediate transition ash bin 104, a discharge control valve 106 for controlling ash in the fixed bed reaction kettle 103 to enter the intermediate transition ash bin 104 is arranged between the slag discharge port of the fixed bed reaction kettle 103 and the intermediate transition ash bin 104, and a slag discharge control valve 107 for controlling the discharge of the ash in the intermediate transition ash bin 104 is arranged at the slag discharge port of the intermediate transition ash bin 104. The ash formed after the reaction in the fixed bed reactor 103 is discharged from the discharge control valve 106, enters the intermediate transition ash bin 104, and is finally discharged from the slag discharge control valve 107.
One embodiment in this application: the reaction material feeding device comprises a hopper 108, a middle transition bin 109 and a feeding valve 110, wherein a feeding port is formed in the top of the hopper 108, reaction materials are fed into the hopper 108 from the feeding port, the lower part of the hopper 108 is communicated with the top of the middle transition bin 109, a control valve 111 for controlling the reaction materials in the hopper 108 to enter the middle transition bin 109 is arranged between the hopper 108 and the middle transition bin 109, and the reaction materials in the hopper 108 can enter the middle transition bin 109 through switching of the control valve; the feed valve 110 is installed at the discharge end of the intermediate transition bin 109 to control the discharge of the reaction material in the intermediate transition bin 109. The bottom of the hopper 108 and the bottom of the intermediate transition bin 109 are respectively provided with a tapered bin which gradually shrinks so as to enable the reaction materials to better flow to the next stage.
One embodiment in this application: the reaction material discharged from the reaction material feeding device and the supercritical water discharged from the supercritical boiler 100 are injected by the injector 112 and then enter the air-floating bed reaction kettle 101 from the bottom of the air-floating bed reaction kettle 101. Supercritical water and reaction materials can be premixed in the ejector 112, and preparation is made for more sufficient reaction in the air floatation bed reaction kettle 101.
One embodiment in this application: the device also comprises a water melting tank 113, a first heat exchanger 114 and a second heat exchanger 115, wherein the water melting tank 113 is internally provided with water melting; the first heat exchanger and the second heat exchanger adopt shell-and-tube heat exchangers, the discharge end of the water melting water tank 113 is communicated with the heat-gaining inlet end of the first heat exchanger 114, the heat-gaining discharge end of the first heat exchanger 114 is communicated with the heat-gaining inlet end of the second heat exchanger 115, and the heat-gaining discharge end of the second heat exchanger 115 is communicated with the supercritical water pipeline in the supercritical boiler 100; in the present application, the temperature in the first heat exchanger 114 is lower than the temperature in the second heat exchanger 115; the temperature of the water in the water tank 113 is gradually increased after passing through the first heat exchanger 114 and the second heat exchanger 115, so as to stabilize the temperature of the water before entering the supercritical boiler 100, and reduce the energy consumption of the supercritical boiler 100.
One embodiment in this application: in order to utilize the heat energy contained in the mixture discharged from the fixed bed reaction kettle 103 and simultaneously separate and store the mixture, the hydrogen production device further comprises a liquid carbon dioxide storage tank 116 and a hydrogen storage tank 117, the discharge end of the fixed bed reaction kettle 103 is communicated with the heat supply inlet end of the second heat exchanger 115, the heat supply discharge end of the second heat exchanger 115 is communicated with the heat supply inlet end of the first heat exchanger 114, the heat supply discharge end of the first heat exchanger 114 is provided with two paths, one path is communicated with the hydrogen storage tank 117, the gaseous hydrogen enters the hydrogen storage tank 117, the other path is communicated with the liquid carbon dioxide storage tank 116, and the liquid carbon dioxide enters the liquid carbon dioxide storage tank 116. The mixture discharged from the fixed bed reaction kettle 103 sequentially passes through the second heat exchanger 115 and the first heat exchanger 114, so that the temperature of the water is gradually increased, meanwhile, the temperature of the mixture is gradually reduced, supercritical water in the second heat exchanger 115 is separated out in the reducing process and is sent back to the raw water tank, and supercritical carbon dioxide and hydrogen form a gas state and are sent into the first heat exchanger 114; after passing through the first heat exchanger 114, the gaseous carbon dioxide is cooled to be liquid carbon dioxide, and flows out from the bottom of the first heat exchanger 114 and enters the liquid carbon dioxide storage tank 116, and the hydrogen enters the hydrogen storage tank 117, so that the gaseous carbon dioxide and the liquid carbon dioxide can be stored respectively.
Claims (6)
1. A supercritical water hydrogen production device, which comprises a supercritical boiler, an air flotation bed reaction kettle and a reaction material feeding device and is characterized in that,
the supercritical boiler provides supercritical water;
the reaction material feeding device receives the reaction materials and discharges the reaction materials;
reaction material and supercritical water that reaction material feeding device discharged mix and get into air supporting bed reation kettle, and in air supporting bed reation kettle, reaction material and supercritical water reaction generate supercritical mixture, and supercritical mixture contains supercritical carbon dioxide, supercritical hydrogen, the supercritical water that has not reacted, and the supercritical mixture of production discharges from air supporting bed reation kettle.
2. The supercritical water hydrogen production apparatus according to claim 1, further comprising a fixed bed reactor and an intermediate transition ash bin, wherein the discharge end of the air-floating bed reactor is communicated with the inlet end of the fixed bed reactor, the supercritical mixture discharged from the air-floating bed reactor enters the fixed bed reactor for continuous reaction, and after the reaction is completed, the supercritical mixture is discharged from the discharge end of the fixed bed reactor;
the slag discharge port of the fixed bed reaction kettle is communicated with the intermediate transition ash bin, a discharge control valve for controlling ash in the fixed bed reaction kettle to enter the intermediate transition ash bin is arranged between the slag discharge port of the fixed bed reaction kettle and the intermediate transition ash bin, and a slag discharge control valve for controlling the discharge of the ash in the intermediate transition ash bin is arranged at the slag discharge port of the intermediate transition ash bin.
3. The supercritical water hydrogen production plant as defined in claim 1 wherein the reactant feeding device comprises a hopper, an intermediate transition bin, and a feeding valve, the hopper is provided with a feeding port, the lower part of the hopper is communicated with the top of the intermediate transition bin, and a control valve for controlling the reactant in the hopper to enter the intermediate transition bin is arranged between the hopper and the intermediate transition bin; the feeding valve is arranged at the discharge end of the intermediate transition bin to control the discharge of reaction materials in the intermediate transition bin.
4. The supercritical water hydrogen production plant as defined in claim 1, wherein the reaction material discharged from the reaction material feeding device and the supercritical water discharged from the supercritical boiler are injected by the injector and then enter the air-flotation bed reaction kettle from the bottom of the air-flotation bed reaction kettle.
5. The supercritical water hydrogen production plant of claim 2 further comprising a water chemical tank, a first heat exchanger, a second heat exchanger, wherein water chemical is stored in the water chemical tank;
the discharge end of the water dissolving tank is communicated with the heat-obtaining inlet end of the first heat exchanger, the heat-obtaining discharge end of the first heat exchanger is communicated with the heat-obtaining inlet end of the second heat exchanger, and the heat-obtaining discharge end of the second heat exchanger is communicated with the supercritical water pipeline in the supercritical boiler;
the temperature in the first heat exchanger is lower than the temperature in the second heat exchanger; the temperature of the water in the water tank is gradually increased after the water passes through the first heat exchanger and the second heat exchanger.
6. The supercritical water hydrogen production apparatus as defined in claim 5 further comprising a liquid carbon dioxide storage tank, a hydrogen storage tank,
the discharge end of the fixed bed reaction kettle is communicated with the heat supply inlet end of the second heat exchanger, the heat supply discharge end of the second heat exchanger is communicated with the heat supply inlet end of the first heat exchanger, two paths of heat supply discharge ends of the first heat exchanger are arranged, one path of heat supply discharge ends of the first heat exchanger is communicated with the hydrogen storage tank, gaseous hydrogen enters the hydrogen storage tank, the other path of heat supply discharge ends of the first heat exchanger is communicated with the liquid carbon dioxide storage tank, and liquid carbon dioxide enters the liquid carbon dioxide storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122836859.4U CN217757343U (en) | 2021-11-18 | 2021-11-18 | Supercritical water hydrogen production device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122836859.4U CN217757343U (en) | 2021-11-18 | 2021-11-18 | Supercritical water hydrogen production device |
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| Publication Number | Publication Date |
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| CN217757343U true CN217757343U (en) | 2022-11-08 |
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| CN202122836859.4U Active CN217757343U (en) | 2021-11-18 | 2021-11-18 | Supercritical water hydrogen production device |
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