Zero-carbon emission cogeneration system and method based on solar methanol decomposition synthesis cycle

Abstract

The invention discloses a zero-carbon emission cogeneration system and method based on solar methanol decomposition synthesis cycle, belonging to the field of distributed energy. The invention uses solar energy to thermally decompose methanol to obtain carbon monoxide and hydrogen, and converts low-grade solar energy into high-grade chemical energy for storage. In a syngas internal combustion engine, carbon monoxide and hydrogen are combusted to produce carbon dioxide and water, and the rotating crankshaft drives a generator to generate electricity for power supply. The multi-stage waste heat generated by the system can supply heat demand, through absorption refrigeration device can supply cold demand, through organic Lang The Ken cycle device can use low-temperature waste heat to generate electricity. The load and the electrolyzer are powered by the photovoltaic device, and the electrolyzer electrolyzes the water generated in the syngas internal combustion engine to produce hydrogen, and re-synthesizes methanol with the carbon dioxide generated in the syngas internal combustion engine to realize the carbon cycle. This system inputs solar energy and outputs cooling and heating power without expensive energy storage equipment, high energy efficiency and zero carbon emissions.

Description

technical field [0001] The invention relates to a combined cooling, heating and power system, in particular to a zero-carbon emission combined cooling, heating and power system and method based on solar methanol decomposition synthesis cycle, which belongs to the field of distributed energy. Background technique [0002] As the main direction and form of distributed energy development, the combined cooling, heating and power system is a comprehensive energy production and energy consumption system based on energy cascade utilization. Because of its multi-functional goals such as higher energy utilization rate, lower energy cost, higher energy supply security and better environmental protection performance, it has gradually been applied to commercial office buildings, hospitals and other urban public complex buildings. [0003] At present, most combined heat and power systems use primary energy such as natural gas and biomass gas or secondary energy such as methanol as fuel, ...

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Problems solved by technology

[0003] At present, most combined heat and power systems use primary energy such as natural gas and biomass gas or secondary energy such as methanol as fuel, which will generate a large amount of carbon dioxide and cause harm to the environment. At the same time, its fuel cannot achieve self-sufficiency

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