Coal chemical chain combustion generating process and device

Abstract

The invention discloses a coal chemical chain combustion generating process and a coal chemical chain combustion generating device, which are applied to occasions on which carbon dioxide needs to be absorbed for coal power generation. The device mainly comprises a coal gasification furnace, a coal cyclone separator, a reducer, a reducer cyclone separator, an oxidizer, an oxidizer cyclone separator, an air compressor, a first-stage turbine, a saturator, a second-stage turbine, a condenser and a generator. The process comprises the following steps of: gasifying coal into CO and CH4 in the gasification furnace; feeding the CO and the CH4 into the reducer; reacting the CO and the CH4 with NiO in the reducer so as to generate high-temperature and high-pressure pure CO2 gas; doing work in the first-stage turbine to drive the generator to generate power; condensing gas exhausted from the first-stage turbine by using the condenser to obtain pure CO2 gas and water; and recovering the pure CO2 gas. The process is flameless combustion technology, in which pure CO2 is separated in a chemical chain combustion mode, so that CO2 emission is controlled effectively.

Description

Technical field: [0001] The invention relates to a coal chemical chain combustion power generation process and its device, which are used in occasions where carbon dioxide emissions need to be reduced for power generation. Background technique: [0002] Global warming is mainly due to CO 2 It is caused by the aggravation of the earth's greenhouse effect caused by the large amount of greenhouse gas emissions. Control and reduce CO 2 emissions play an important role in addressing the effects of atmospheric greenhouse effect and global warming. my country is CO 2 Large emitters, accounting for about 100% of the world's CO 2 1 / 5 of total emissions, most of which are CO 2 produced by burning coal. For a long period of time in the future, my country's coal-based energy structure will not change, and coal consumption will continue to grow. In the production of energy mainly based on fossil fuels, CO 2 The emissions of CO 2 More than 70% of the total emissions, control of CO...

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Problems solved by technology

CO is separated from the tail gas of coal-fired boilers 2 energy consumption is very high

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