Near-zero-emission and CO2 recycling type fossil energy utilization method

Abstract

The invention relates to a near-zero-emission and CO2 recycling type fossil energy utilization method. The method is characterized in that coal gasification, power generation and production of chemicals are coupled, wherein the logistics and energy in the whole coupling process are integrated, namely, a certain volume of CO2 which is continuously exhausted is extracted is input to a power generation system to realize recycling; water or steam produced by power generation is treated as fluidizing gas for gasification reaction; the rest CO2 is treated as the chemical raw material for producing 1, 3, 5-sym-triazinetriol; and the chemical production of the 1, 3, 5-sym-triazinetriol chemical product and the power generation are organically combined, so that the recycling of CO2 and the completeutilization of C atoms can be completely realized, and as a result, the zero emission of CO2 is achieved. With the adoption of the method, the key problem that a large volume of room-temperature CO2is exhausted in an existing multi-co-production technology is solved; the purposes of CO2 recycling, green energy and chemical industry can be achieved; the CO2 and hydrogen can be effectively organically utilized; the near zero emission of SO2, NOX, particles and CO2 can be realized; and moreover, the H2 power generation risk is reduced, and the CO2 recycling is achieved.

Description

technical field [0001] The invention relates to a near-zero emission, CO 2 The resource utilization method of fossil energy belongs to the technical field of coal combustion environmental protection. Background technique [0002] Fossil energy accounts for 85% of my country's primary energy, of which coal accounts for the highest proportion, about 66%. Extensive use of fossil energy leads to SO 2 , NO X , particulate matter and CO 2 Excessive emissions, the quality of the atmospheric environment has deteriorated sharply. Although the pollution can be reduced by removing various pollutants after combustion; it requires a large amount of equipment investment and produces a large amount of CO 2 . CO 2 The emissions not only aggravate the greenhouse effect and cause global climate change, but also lead to the waste of carbon resources. Hydrogen energy has attracted widespread attention due to its advantages such as high energy density, high heat conversion efficiency, an...

AI Technical Summary

Problems solved by technology

[0003] Pure hydrogen combustion is prone to explosion and high NOx emissions. At present, it is mainly mixed with hydrocarbon fuel or nitrogen combustion

Currently CO 2 The research on resource utilization is mainly to synthesize methane, methanol, dimethyl ether or liquid fuel, etc., and the main problem is H 2 The dosage is large, the process energy consumption is high and the product life cycle is short

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