Photo-thermal type coal supercritical water gasification hydrogen-heat-power cogeneration system and working method
A technology of supercritical water gasification and cogeneration of heat and power, which is applied in the directions of solar thermal power generation, joint combustion mitigation, and mechanisms for generating mechanical power, can solve the problems of excess heat loss in the system, low hydrogen production rate, and cascaded utilization, etc., to achieve Effects of reducing waste heat loss, increasing hydrogen production rate, and clean and efficient conversion
Active Publication Date: 2021-07-09
XI AN JIAOTONG UNIV
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Problems solved by technology
[0004] At present, the thermal system based on supercritical water gasification technology mainly focuses on hydrogen production or power generation, and fails to realize the cascade utilization of energy, and there is a lot of waste heat loss in the system; the heat source is mainly coal, gas and other fossil energy sources. Mainly, it causes additional environmental pollution; the gasification product contains more by-products such as methane and carbon monoxide, and the hydrogen production rate is low
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[0021] The present invention is described in detail below in conjunction with accompanying drawing:
[0022] Such as figure 1 As shown, the photothermal coal supercritical water gasification hydrogen heat and power cogeneration system described in the present invention includes a supercritical water gasification reaction system, a hydrogen preparation and purification system, a combined cycle power generation system, a heating system and a solar heat collection system ;
[0023] The supercritical water gasification reaction system includes a pulping device 101, a low temperature regenerator 106, a medium temperature regenerator 107, a high temperature regenerator 108, a steam generator 109, a solar gasification reactor 110 and 1# gas-liquid separation device 112; the external water supply pipeline is connected to the feedwater regulating valve 102 for diversion, respectively connected to the inlet of the pulping device 101, connected to the inlet of the cold side water pipeli...
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The invention discloses a photo-thermal type coal supercritical water gasification hydrogen-heat-power cogeneration system and a working method. The system comprises a supercritical water gasification reaction system, a hydrogen preparation and purification system, a combined cycle power generation system, a heat supply system and a solar heat collection system. Based on the energy gradient utilization principle, coal chemical energy and solar energy are converted into hydrogen energy, electric energy and heat energy required by users, and flexible distribution of hydrogen-heat-power loads can be achieved; by reasonably arranging a heat exchange network, gasification products, synthesis gas and combustion flue gas waste heat are fully recycled, energy losses in the system are effectively reduced, and the system efficiency is improved; solar heat collection is adopted as a heat source of a gasification reaction and a steam reforming reaction, and extra pollution is avoided; and through the reforming reaction and a two-stage water-gas shift reaction, the hydrogen yield of the system is effectively increased. According to the photo-thermal type coal supercritical water gasification hydrogen-heat-power cogeneration system and the working method, clean and efficient conversion of coal is achieved, and the requirements of the users for the hydrogen-heat-power loads can be met.
Description
technical field [0001] The invention relates to the technical field of clean and efficient conversion and utilization of energy, and relates to a photothermal coal supercritical water gasification hydrogen cogeneration system and a working method. Background technique [0002] my country is the largest coal producer and consumer in the world today, and the coal-based energy structure is difficult to change in the short term. At present, the main utilization method of coal is still gas-phase combustion, which is likely to cause serious environmental pollution problems, and the treatment of pollutants increases the construction and operation costs of coal-fired power stations. Therefore, the development of clean and efficient new coal conversion technology is of great significance to my country's energy transition. [0003] Coal supercritical water gasification technology is a clean and efficient conversion technology of coal, which can convert organic matter in coal into syn...
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IPC IPC(8): F01K7/32F01K11/02F01K13/00F01K13/02F01K17/02F01K21/00F03G6/06F01D15/10F01D15/08
CPCF01K13/00F03G6/067F01K13/02F01K13/006F01K7/32F01K17/02F01K21/00F01K11/02F01D15/10F01D15/08Y02E20/14Y02E10/46
Inventor 种道彤赵夕晨严俊杰刘明赵全斌王进仕
Owner XI AN JIAOTONG UNIV