Method for directly preparing coal gas from industrial high temperature CO2 waste gas

Abstract

The invention relates to a method directly using industrial waste heat and industrial high temperature CO2 waste gas to directly prepare coal gas, which uses carbon as raw material, and uses waste heat from industrial high temperature CO2 waste gas to heat the carbon reaction bed, so as to directly convert the high temperature CO2 waste gas passing through the carbon reaction bed into coal gas CO. Because of using the heat energy form high temperature CO2 waste gas, the large number of energy consumption is saved, and the purity of produced CO is high, and the production cost is low, and the purpose of decreasing CO2 discharge in industrial production is achieved.

Description

technical field [0001] The present invention utilizes industrial production waste heat and CO 2 The method of producing CO, especially belongs to the use of high temperature CO 2 A method of directly producing CO from waste gas. Background technique [0002] With the increasing scale of industrial production, some high energy-consuming industries CO 2 Emissions are increasing, causing global warming and seriously damaging the living environment of human beings, thereby reducing CO 2 Emissions have become an important issue in industrial production worldwide. [0003] Coal gas (CO) is an important clean fuel for industrial production and daily life. High-purity CO is also an important basic raw material for organic synthesis, and its purity is >90%. To produce this gas source, most organic synthesis plants use the method of producing air gas and then separating to obtain high-purity gas (CO). This method has high gasification conditions and low gasification intensity ...

AI Technical Summary

Problems solved by technology

This method has high gasification conditions and low gasification intensity (2 / h.m 2 ), so the gas production cost is higher

Large-scale production of CO is the method of using coal-water slurry gasification to produce syngas, which requires large investment and complicated technology, and requires a large amount of fuel coal to produce CO raw material gas

[0004] In "CO 2 In the patent application (Application No. 99110011.5) of Reduction CO Gasification Process, the applicant explained the use of fixed bed gasifier and collected CO 2 A process in which gas is reacted at high temperature to produce CO. This method requires the use of an electric heating furnace to control the fixed-bed gasifier and the collected CO. 2 The gas is heated (≥1000°C), which consumes a lot of energy

Its purpose is only to obtain CO gas, but there is no purpose of energy saving and emission reduction at all.

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