CN114408859A - Novel method and device for producing hydrogen by using liquid oxide and supercritical water - Google Patents
Novel method and device for producing hydrogen by using liquid oxide and supercritical water Download PDFInfo
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Abstract
The invention discloses a novel method for producing hydrogen by liquid oxide and supercritical water, which comprises the steps of reacting coal and/or biomass and/or garbage with supercritical water and liquid oxide to generate hydrogen and carbon dioxide, and providing heat absorbed by gasification reaction by heat generated by exothermic reaction in the reaction process to prepare hydrogen. The decomposition heat of hydrogen peroxide and the heat released by the reaction of carbon and oxygen in the reaction process provide the heat required by the gasification reaction, the absorbed heat and the released heat in the overall reaction are basically balanced, and the aim of converting the chemical energy of coal (biomass, garbage and the like) into hydrogen energy and producing hydrogen is fulfilled.
Description
Technical Field
The invention belongs to the technical field of hydrogen production energy, and particularly relates to a novel method and a device for producing hydrogen by using liquid oxide and supercritical water.
Background
Since the invention of fire, people all adopt the oxygen-enriched (air) combustion mode to extract energy for the energy use modes of carbon-based fuels such as coal, petroleum, biomass, garbage and the like.
The traditional coal-fired (biomass, garbage and the like) boiler has the defects of large volume, low efficiency and serious pollution, and the search for a novel green low-carbon hydrogen energy utilization method and equipment is urgent.
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 power generation cycle of the coal-fired power plant is only Rankine cycle, the power generation efficiency is low, the pollution is serious, a large amount of carbon-based fuel is wasted, and the emission intensity of carbon dioxide is greatly increased.
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.
In the background of carbon peak carbon neutralization, new fuels, new reactions and new heat sources are urgently needed to be searched.
Disclosure of Invention
In view of the above problems, the present invention provides a novel method and apparatus for producing hydrogen from liquid oxide and supercritical water.
The technical scheme for realizing the invention is as follows
Coal and/or biomass and/or garbage react with supercritical water and liquid oxide to generate hydrogen and carbon dioxide, and the heat generated by exothermic reaction in the reaction process provides heat absorbed by gasification reaction to prepare hydrogen.
The liquid oxide is hydrogen peroxide, and the reaction process equation is as follows:
H2O2＝H2O+0.5O2exothermic heat generation
C+O2＝CO2Exothermic heat generation
C+2H2O (supercritical) ═ CO2+2H2Absorbing heat
The overall reaction equation is as follows:
H2O2+3.5C+5H2o (supercritical) ═ 3.5CO2+6H2。
Another object of the invention is: the novel liquid oxide and supercritical water hydrogen production device for realizing the hydrogen production method comprises a fixed bed reaction kettle, wherein a reaction space for carrying out gasification reaction on coal and/or biomass and/or garbage, liquid oxide and supercritical water is provided in the fixed bed reaction kettle, the upper part of the fixed bed reaction kettle is provided with a feed inlet, and the lower part of the fixed bed reaction kettle is provided with a slag discharge port; the lower part of the fixed bed reaction kettle is provided with a supercritical water inlet, and the upper part of the fixed bed reaction kettle is provided with a gasified gas outlet; an inlet port for introducing liquid oxide into the fixed bed reaction kettle is arranged on the fixed bed reaction kettle;
adding coal and/or biomass and/or garbage into a fixed bed reaction kettle, and stopping feeding after the feeding is finished;
introducing supercritical water and liquid oxide into a fixed bed reaction kettle;
supercritical water, coal and/or biomass and/or garbage and liquid oxide react in the fixed bed reaction kettle to generate hydrogen and carbon dioxide mixed gas, and the generated hydrogen and carbon dioxide mixed gas is discharged from a gasification gas outlet of the fixed bed reaction kettle.
Another object of the invention is: the hydrogen production device comprises a plurality of fixed bed reaction kettles, the fixed bed reaction kettles alternately work, and the continuous gas production operation is realized by switching the working state of the fixed bed reaction kettles in a standby and combined manner.
Another object of the invention is: the novel liquid oxide and supercritical water hydrogen production device for realizing the hydrogen production method comprises an air floatation bed reaction kettle and a fixed bed reaction kettle, wherein supercritical water inlets are respectively formed in the air floatation bed reaction kettle and the fixed bed reaction kettle, liquid oxide is introduced into the air floatation reaction kettle, and a reaction space for the reaction of supercritical water, coal and/or biomass and/or garbage and liquid oxide is provided in the air floatation bed reaction kettle; the exhaust port of the air-floating bed reaction kettle is communicated with the inlet of the fixed bed reaction kettle, gasified gas and ash generated by reaction in the air-floating bed reaction kettle enter the fixed bed reaction kettle, supercritical water is introduced into the fixed bed reaction kettle to continuously react with the un-gasified ash discharged from the air-floating bed reaction kettle, and finally gasified gas is discharged from the gasified gas outlet of the fixed bed reaction kettle and the ash is discharged from the bottom of the fixed bed reaction kettle. The device has the advantages of high reaction rate of the air-floating bed and high gasification rate of the fixed bed.
Another object of the invention is: the novel liquid oxide and supercritical water hydrogen production device comprises an air floatation bed reaction kettle, a cyclone separator and a reflux bed reaction kettle, wherein the air floatation bed reaction kettle provides a reaction space for the reaction of supercritical water, coal and/or biomass and/or garbage and liquid oxide, a mixture discharged by the reaction in the air floatation bed reaction kettle enters the cyclone separator, the ash density is higher than that of carbon, the ash is discharged through the cyclone separator, the carbon enters the reflux bed reaction kettle along with gasified gas, and when the reaction is continued in the reflux bed reaction kettle, the carbon flying which is not reacted to the greatest extent circulates back to the air floatation reaction kettle, so that the cyclic reciprocating reaction is realized. The apparatus is compatible with the dual advantages of high reaction rate and high gasification rate.
A gasified gas filter is arranged in the reflux bed reaction kettle, the mixture discharged from the cyclone separator is drained to the lower part of the gasified gas filter, the gasified gas in the reflux bed reaction kettle is discharged from a gasified gas outlet of the reflux bed reaction kettle after being filtered by the gasified gas filter, and the materials which are not gasified completely flow into the air-float bed reaction kettle from the circulating pipe by gravity.
The invention provides a method for producing hydrogen by reacting coal and/or biomass and/or garbage, hydrogen peroxide and supercritical water to generate hydrogen and carbon dioxide in a water supercritical state, wherein the hydrogen peroxide is decomposed in the reaction process, and the heat generated by the reaction of carbon and oxygen provides the heat required by gasification reaction, so that the purpose of converting the chemical energy of coal (biomass, garbage and the like) into hydrogen energy and producing hydrogen is realized.
1. According to the invention, the heat generated by the reaction of carbon and oxygen provides the gasification reaction heat through the decomposition of hydrogen peroxide, and the problems of uneven reaction bed temperature and coking and blockage of ash slag caused by the fact that pure oxygen must be added in the traditional supercritical water hydrogen production device are effectively solved.
2. The invention does not need to prepare pure oxygen or externally arrange electric heating, has simple system control and lower hydrogen production cost.
3. The gasification method only uses steam as a gasification agent in the whole process, does not need to add air or oxygen, has no explosion hazard and has higher safety.
4. The gasification has the function of carbon fixation.
5. The hydrogen and the carbon dioxide produced by the method are both in a supercritical state, and the liquid carbon dioxide and the liquid hydrogen can be obtained only by expansion and temperature reduction, so that the problem of hydrogen transportation is thoroughly solved.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a hydrogen production apparatus according to the present invention;
FIG. 2 is a schematic structural view of a second embodiment of the hydrogen production apparatus according to the present invention;
FIG. 3 is a schematic structural view of a third embodiment of the hydrogen production apparatus according to the present invention;
FIG. 4 is a schematic structural view of a fourth embodiment of the hydrogen production apparatus of the present invention;
in the attached figure 1, 101, an intermediate transition bin, 102, a feeding control valve, 103, a discharging control valve, 104, a gasification gas outlet valve, 105, a fixed bed reaction kettle, 106, a gasification gas filter, 107, a supercritical water inlet valve, 108, an ash discharging control valve, 109, an intermediate transition ash bin, 110, an ash discharging control valve, 111 and a hydrogen peroxide inlet valve.
In fig. 2, 201, a first material control valve, 202, a first fixed bed reactor, 203, a first supercritical water control valve, 204, a first slag discharge control valve, 205, a first gasification control valve, 206, an nth material control valve, 207, an nth supercritical water control valve, 208, an nth gasification control valve, 209, an nth fixed bed reactor, 210, an nth slag discharge control valve, 211, a first hydrogen peroxide control valve, 212, and an nth hydrogen peroxide control valve.
In the attached figure 3, 301, a feeding control valve, 302, an intermediate transition bin, 303, a discharging control valve, 304, an air flotation bed reaction kettle, 305, a supercritical water inlet valve, 306, a fixed bed gasifying agent control valve, 307, a gasifying gas outlet valve, 308, a gasifying gas filter, 309, a fixed bed reaction kettle, 310, an ash discharging control valve, 311, an intermediate transition ash bin, 312, an ash discharging control valve, 313 and a hydrogen peroxide control valve.
In the attached figure 4, 401, an air flotation bed reaction kettle, 402, a feeding control valve, 403, an intermediate transition bin, 404, a discharging control valve, 405, a supercritical water inlet valve, 406, a venturi ejector, 407, a cyclone separator, 408, a gasified gas outlet valve, 409, a gasified gas filter, 410, a reflux bed reaction kettle, 411, an ash discharging control valve, 412 and a hydrogen peroxide control valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
The invention discloses a novel method for producing hydrogen by liquid oxide and supercritical water, which is required to protect.
The liquid oxide is hydrogen peroxide, and the reaction process equation is as follows:
H2O2＝H2O+0.5O2Δ H ═ 73.5kJ/mol exotherm
C+O2＝CO2Δ H ═ 393.5kJ/mol exotherm
C+2H2O (supercritical) ═ CO2+2H2Delta H +90.5kJ/mol endotherm
The overall reaction equation is as follows:
H2O2+3.5C+5H2o (supercritical) ═ 3.5CO2+6H2。
In the reaction process, the heat released by the decomposition of hydrogen peroxide and the reaction of carbon and oxygen can be provided for the gasification reaction.
The first embodiment of the hydrogen production device of the invention, referring to fig. 1, shows a structure, the device is a device for realizing intermittent hydrogen production, the hydrogen production device comprises an intermediate transition bin 101, a feeding control valve 102, a discharging control valve 103, a gasified gas outlet valve 104, a fixed bed reaction vessel 105, a gasified gas filter 106, a supercritical water inlet valve 107, an ash discharging control valve 108, an intermediate transition ash bin 109, an ash discharging control valve 110, and a hydrogen peroxide inlet valve 111;
the feeding control valve 102 is installed at a feeding port above the intermediate transition bin 101, and controls the dry reaction materials (coal and/or biomass and/or garbage) which are uniformly mixed to enter the intermediate transition bin 101. The discharge control valve 103 controls the discharge of the reaction material in the intermediate transition bin 101 from the top of the fixed bed reactor 105 into the fixed bed reactor 105. The upper part of the fixed bed reaction kettle 105 is provided with a feed inlet communicated with the intermediate transition bin 101, and the lower part is provided with a slag discharge port communicated with the intermediate transition ash bin 109, so that slag in the fixed bed reaction kettle 105 is discharged into the intermediate transition ash bin. The fixed bed reactor 105 provides a space for coal and/or biomass and/or garbage, liquid oxide, and supercritical water to perform gasification reaction.
The upper part of the fixed bed reaction kettle 105 is provided with a gasified gas filter 106, the reaction material discharged into the fixed bed reaction kettle 105 from the middle transition bin 101 is drained to the lower part of the gasified gas filter 106 through a pipeline, the gasified gas generated in the fixed bed reaction kettle 105 after being filtered by the gasified gas filter 106 is discharged through the opened gasified gas outlet valve 104, the integration of gasification and purification can be realized, and hydrogen is generated. Of course, the gasification gas filter in the device can be arranged externally and is not arranged in the fixed bed reaction kettle 105.
Adding the reaction materials into the fixed bed reaction kettle 105, closing a valve to stop feeding after feeding, and closing to discharge slag; supercritical water is introduced into the fixed bed reaction kettle 105 through the supercritical water inlet and hydrogen peroxide is introduced into the fixed bed reaction kettle through the hydrogen peroxide inlet; supercritical water, hydrogen peroxide and reaction materials react in a fixed bed reaction kettle to generate hydrogen and carbon dioxide mixed gas, the hydrogen and carbon dioxide mixed gas generated by the reaction is discharged from a gasification gas outlet of the fixed bed reaction kettle, after the reaction exhaust is finished, the introduction of the supercritical water and the hydrogen peroxide and the exhaust of the gasification gas generation outlet are closed, gasification ash in the fixed bed reaction kettle is discharged, and after the gasification ash is emptied, the ash is closed to discharge slag; repeating the steps to realize an intermittent gasification process; in the operation process, the safe intermittent feeding to the reaction kettle and the safe intermittent deslagging to the outside under the supercritical high-temperature high-pressure are realized through the combined control of the discharge control valve 103, the supercritical water inlet valve 107, the hydrogen peroxide inlet valve 111, the ash discharge control valve 108 and the gasified gas outlet valve 104.
The second embodiment of the hydrogen production device is shown in a structure with reference to fig. 2, and on the basis of the intermittent hydrogen production devices, the continuous hydrogen production device is provided, the hydrogen production device comprises at least two intermittent hydrogen production devices, the intermittent hydrogen production devices are connected in parallel to form the continuous hydrogen production device, the intermittent hydrogen production devices are switched to be fed into supercritical water/hydrogen peroxide for operation reaction, a gasified gas outlet is switched to exhaust gas, and the continuous gas production operation is realized by switching the working state of the intermittent hydrogen production devices in a standby and combined manner.
The continuous hydrogen production device specifically comprises a first material control valve 201, a first fixed bed reaction kettle 202, a first supercritical water control valve 203, a first slag tapping control valve 204, a first gasification control valve 205, an Nth material control valve 206, an Nth supercritical water control valve 207, an Nth gasification control valve 208, an Nth fixed bed reaction kettle 209, an Nth slag tapping control valve 210, a first hydrogen peroxide control valve 211 and an Nth hydrogen peroxide control valve 212; the first gasification control valve 205 and the nth gasification control valve 208 are connected in parallel by a pipe, and exhaust can be concentrated; the first supercritical water control valve 203 and the Nth supercritical water control valve 207 are connected in parallel through pipelines, and supercritical water can be supplied in a centralized manner; the first hydrogen peroxide control valve 211 and the nth hydrogen peroxide control valve 212 may collectively supply hydrogen peroxide.
And the supercritical water is controlled to be opened or closed by controlling the first supercritical water control valve and the Nth supercritical water control valve, so that the supercritical water enters a fixed bed reaction kettle which is about to start reaction operation, or the supercritical water is cut off and enters the fixed bed reaction kettle which is about to start a material preparation state. Meanwhile, the hydrogen peroxide is introduced/cut off into the corresponding fixed bed reaction kettle by controlling the opening or closing of the first hydrogen peroxide control valve 211 and the Nth hydrogen peroxide control valve 212.
When gasification reaction is carried out in one or more fixed bed reaction kettles, the rest fixed bed reaction kettles are in a material preparation state, the fixed bed reaction kettles are switched to the material preparation state after the previous gasification reaction is finished, and the fixed bed reaction kettles which are finished by the previous material preparation are started to enter the gasification reaction process through switching of the control valve, so that the continuous non-stop supercritical water hydrogen production process is realized.
The third embodiment of the hydrogen production apparatus of the present invention, referring to the structure shown in fig. 3, provides a hydrogen production apparatus using an air-floating bed combined with a fixed bed gasification furnace, which includes a feeding control valve 301, an intermediate transition bin 302, a discharging control valve 303, an air-floating bed reaction vessel 304, a supercritical water inlet valve 305, a fixed bed gasification agent control valve 306, a gasified gas outlet valve 307, a gasified gas filter 308, a fixed bed reaction vessel 309, an ash discharge control valve 310, an intermediate transition ash bin 311, an ash discharge control valve 312, and a hydrogen peroxide control valve 313; air bed reactor 304 provides a space for coal and/or biomass and/or garbage to react with supercritical water and liquid oxide to generate hydrogen. The air flotation bed reaction kettle and the fixed bed reaction kettle are respectively provided with a supercritical water inlet, and supercritical water enters the fixed bed reaction kettle 309 by opening the fixed bed gasification agent control valve 306. The air floatation bed reaction kettle is provided with a hydrogen peroxide control valve 313 for controlling hydrogen peroxide to enter the air floatation reaction kettle, a feeding control valve 301 for controlling reaction materials to enter the intermediate transition bin 302, a discharging control valve 303 below the intermediate transition bin 302 for controlling the reaction materials in the intermediate transition bin to enter the air floatation bed reaction kettle 304, supercritical water and hydrogen peroxide are introduced from the bottom of the air floatation bed reaction kettle 304, reacts with the entering reaction materials (coal and/or biomass and/or garbage), the generated gasification gas is discharged into a fixed bed reaction kettle 309 from a gasification gas outlet at the top of the air flotation bed reaction kettle 304, the supercritical water introduced into the fixed bed reactor 309 continuously reacts with the gasified gas, and the gasified gas generated by the reaction is filtered by the gasified gas filter 308 at the top in the fixed bed reactor 309 and then discharged from the gasified gas outlet valve. Of course, the gasification gas filter in the device can be arranged externally and is not arranged in the fixed bed reactor 309.
This device passes through air supporting bed reation kettle 304 back series fixed bed reation kettle 309, accomplishes gasification reaction in proper order, and the extension reaction process can the reducible lime-ash carbon inclusion, improves gasification efficiency. The device is compatible with the dual advantages of high reaction rate of the air-floating bed and high gasification rate of the fixed bed.
The fourth embodiment of the hydrogen production apparatus of the present invention, referring to the structure shown in fig. 4, provides a hydrogen production apparatus with an air-floating bed combined with a fixed bed gasification furnace, which comprises an air-floating bed reaction kettle 401, a feeding control valve 402, an intermediate transition bin 403, a discharging control valve 404, a supercritical water inlet valve 405, a venturi ejector 406, a cyclone 407, a gasified gas outlet valve 408, a gasified gas filter 409, a reflux bed reaction kettle 410, an ash discharge control valve 411, and a hydrogen peroxide control valve 412.
A reaction space for reacting coal and/or biomass and/or garbage with supercritical water and liquid oxide to generate hydrogen is provided in the air-floating bed reaction kettle 401, a feeding control valve 402 at the top of the intermediate transition bin 403 controls the feeding of reaction materials, and a discharging control valve 404 at the bottom controls the discharging of the reaction materials in the intermediate transition bin 403; supercritical water, hydrogen peroxide and reaction materials discharged from the intermediate transition bin 403 are injected by the venturi injector 406, enter from the bottom of the air floatation bed reaction kettle 401, and react in the air floatation bed reaction kettle 401 to generate hydrogen and carbon dioxide; the discharge end of the air floatation bed reaction kettle 401 is communicated with a cyclone separator 407, a mixture discharged from the air floatation reaction kettle 401 enters the cyclone separator 407, and ash is discharged through the cyclone separator 407 by utilizing the fact that the ash density is greater than the carbon density in the cyclone separator 407; the exhaust end of the cyclone 407 is introduced to the lower part of the gasification filter 409 in the reflux bed reactor 410 through a drainage tube, the mixed gas discharged from the cyclone continues to react in the reflux bed reactor 410, the unreacted flying carbon is circulated back to the air flotation reactor during the reaction, the gasified gas in the reflux bed reactor is filtered by the gasification filter and discharged from the gasified gas outlet of the reflux bed reactor, and the material which is not gasified flows into the air flotation reactor through gravity in the circulation tube. The device can realize continuous operation, reduce carbon inclusion in ash and slag and improve gasification efficiency. The device is compatible with the advantages of high reaction rate and high gasification rate.
Claims (7)
1. A novel method for preparing hydrogen by liquid oxide and supercritical water is characterized in that coal and/or biomass and/or garbage react with supercritical water and liquid oxide to generate hydrogen and carbon dioxide, and the heat generated by exothermic reaction in the reaction process provides the heat absorbed by gasification reaction to prepare hydrogen.
2. The novel method for producing hydrogen by using liquid oxide and supercritical water as claimed in claim 1, wherein the liquid oxide is hydrogen peroxide,
the reaction process equation is as follows:
H2O2＝H2O+0.5O2exothermic heat generation
C+O2＝CO2Exothermic heat generation
C+2H2O (supercritical) ═ CO2+2H2Absorbing heat
The overall reaction equation is as follows:
H2O2+3.5C+5H2o (supercritical) ═ 3.5CO2+6H2。
3. The novel liquid oxide and supercritical water hydrogen production device for realizing the hydrogen production method of the claim 1 or 2 is characterized by comprising a fixed bed reaction kettle, wherein a reaction space for carrying out gasification reaction on coal and/or biomass and/or garbage, liquid oxide and supercritical water is provided in the fixed bed reaction kettle, the upper part of the fixed bed reaction kettle is provided with a feed inlet, and the lower part of the fixed bed reaction kettle is provided with a slag discharge port; the lower part of the fixed bed reaction kettle is provided with a supercritical water inlet, and the upper part of the fixed bed reaction kettle is provided with a gasified gas outlet; an inlet port for introducing liquid oxide into the fixed bed reaction kettle is arranged on the fixed bed reaction kettle;
adding coal and/or biomass and/or garbage into a fixed bed reaction kettle, and stopping feeding after the feeding is finished;
introducing supercritical water and liquid oxide into a fixed bed reaction kettle;
supercritical water, coal and/or biomass and/or garbage and liquid oxide react in the fixed bed reaction kettle to generate hydrogen and carbon dioxide mixed gas, and the generated hydrogen and carbon dioxide mixed gas is discharged from a gasification gas outlet of the fixed bed reaction kettle.
4. The novel liquid oxide and supercritical water hydrogen production plant according to claim 3 is characterized in that the hydrogen production plant comprises a plurality of fixed bed reaction kettles, the plurality of fixed bed reaction kettles alternately work, and continuous gas production operation is realized by switching the working state of the fixed bed reaction kettles in a backup and combination manner.
5. The novel liquid oxide and supercritical water hydrogen production device for realizing the hydrogen production method according to claim 1 or 2 is characterized by comprising an air flotation bed reaction kettle and a fixed bed reaction kettle, wherein the air flotation bed reaction kettle and the fixed bed reaction kettle are respectively provided with a supercritical water inlet, liquid oxide is introduced into the air flotation reaction kettle, and a reaction space for the reaction of supercritical water, coal and/or biomass and/or garbage and liquid oxide is provided in the air flotation bed reaction kettle; the exhaust port of the air-floating bed reaction kettle is communicated with the inlet of the fixed bed reaction kettle, gasified gas and ash generated by reaction in the air-floating bed reaction kettle enter the fixed bed reaction kettle, supercritical water is introduced into the fixed bed reaction kettle to continuously react with the un-gasified ash discharged from the air-floating bed reaction kettle, and finally gasified gas is discharged from the gasified gas outlet of the fixed bed reaction kettle and the ash is discharged from the bottom of the fixed bed reaction kettle.
6. The novel liquid oxide and supercritical water hydrogen production device for realizing the hydrogen production method of the claim 1 or 2 is characterized by comprising an air floatation bed reaction kettle, a cyclone separator and a reflux bed reaction kettle,
the air floatation bed reaction kettle provides a reaction space for supercritical water, coal and/or biomass and/or garbage and liquid oxide reaction, a mixture discharged by reaction in the air floatation bed reaction kettle enters the cyclone separator, ash and slag are discharged through the cyclone separator by utilizing the density of the ash and slag being greater than that of carbon, the carbon enters the reflux bed reaction kettle along with gasified gas, and the carbon which is not reacted completely circulates back to the air floatation reaction kettle while continuing reaction in the reflux bed reaction kettle, so that the cyclic reciprocating reaction is realized.
7. The novel liquid oxide and supercritical water hydrogen production device according to claim 6, characterized in that a gasification gas filter is arranged in the reflux bed reactor, the mixture discharged from the cyclone separator is drained to the lower part of the gasification gas filter, the gasification gas in the reflux bed reactor is discharged from the gasification gas outlet of the reflux bed reactor through the filtration of the gasification gas filter, and the un-gasified materials flow into the air flotation bed reactor through gravity in the circulating pipe.
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| CN111205894A (en) * | 2020-03-11 | 2020-05-29 | 西安交通大学 | Carbon-based energy supercritical water gasification hydrogen production and CO2Energy utilization system and method |
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