Novel method and device for producing hydrogen from liquid oxide and supercritical water

Abstract

The invention discloses a novel method for preparing hydrogen from liquid oxide and supercritical water, which comprises the following steps: 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 with 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, the chemical energy of coal (biomass, garbage and the like) is converted into hydrogen energy, and the purpose of hydrogen production is achieved.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production energy, and in particular relates to a method and a device for producing hydrogen from a novel liquid oxide and supercritical water. Background technique [0002] Since humans invented fire, they have used oxygen-enriched (air) combustion to extract energy from carbon-based fuels such as coal, petroleum, biomass, and garbage. [0003] Traditional coal-fired (biomass, garbage, etc.) boilers are bulky, inefficient, and seriously polluting. It is imminent to find a new green and low-carbon hydrogen energy utilization method and equipment. [0004] The traditional chemical coal gasification method uses pure oxygen as the gasification agent, and generates carbon monoxide, hydrogen, etc. under the condition of oxygen-deficient combustion by adding pure oxygen and water. water pollution, while the efficiency is less than 60%, resulting in a lot of energy waste. [0005] The power generation...

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Problems solved by technology

[0003] Traditional coal-fired (biomass, garbage, etc.) boilers are bulky, inefficient, and seriously polluting. It is imminent to find a new green and low-carbon hydrogen energy utilization method and equipment

[0004] The traditional chemical coal gasification method uses pure oxygen as the gasification agent, and generates carbon monoxide, hydrogen, etc. under the condition of oxygen-deficient combustion by adding pure oxygen and water. water pollution, while the efficiency is less than 60%, resulting in a lot of energy waste

[0005] The power generation cycle of traditional coal-fired power plants is only the Rankine cycle, which has low power generation efficiency and serious pollution, resulting in a large amount of waste of carbon-based fuels and greatly increasing the intensity of carbon dioxide emissions

[0006] The traditional electrolysis of water to produce hydrogen has high cost of hydrogen production, low pressure of hydrogen, difficulty in pressurized liquefaction, difficult to solve the problem of hydrogen energy transportation, and unable to support the rapid development of the hydrogen energy industry chain

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