Method and system for reforming ironmaking blast furnace into coal/garbage/biomass all gasification furnace

Abstract

The invention provides a method and a system for reforming an ironmaking blast furnace into a coal / garbage / biomass all gasification furnace. The method is characterized in that air (or pure oxygen or oxygen-rich air) and a gas are burnt by use of a hot-blast stove to generate high-temperature flue gas rich in carbon dioxide and water vapor as a gasifying agent, and then the gasifying agent is fed into the hearth of the ironmaking blast furnace so as to react with carbon in coal, garbage and biomass residue to generate gases such as carbon monoxide and water gas, and the coal, the garbage, the biomass and the like are pyrolyzed in the high-temperature gases such as the water gas to generate a pyrolysis gas; the mixed gas formed by generating the gases such as the carbon monoxide and the water gas (including the pyrolysis gas) is purified through tar removal, dust removal and the like, and then can be recycled, and the residual gas can be applied to generating power; the reformed all gasification furnace is capable of gasifying the coal, the garbage, the biomass and the like; however, no waste gases such as carbon dioxide, sulfur dioxide, oxynitrides and dioxins are not discharged, and therefore, a chimney is omitted and approximately zero emission is realized.

Description

Technical field [0001] A method and system for transforming an ironmaking blast furnace into a coal, garbage, and biomass gasifier; it belongs to clean energy technology. Background technique [0002] The gasification of coal, garbage, biomass, etc. occupies an extremely important position in China’s energy strategy; the clean and efficient use of coal, garbage, biomass, etc. is of great significance to the development of the national economy and the solution of air pollution; at present, coal, garbage, The utilization of biomass, etc. still uses traditional incineration, which has low efficiency and heavy pollution, which has become a tasteless; now the gasification equipment for coal, garbage, biomass, etc. is expensive; many iron-making blast furnaces are facing elimination; the iron-making blast furnace is transformed into The method and system of coal, garbage, and biomass gasifier will become an advancement in energy technology. Summary of the invention [0003] A method an...

AI Technical Summary

Problems solved by technology

[0002] The gasification of coal, garbage, biomass, etc. occupies an extremely important position in my country's energy strategy; the clean and efficient use of coal, garbage, biomass, etc. is of great significance to the development of the national economy and the solution to air pollution; currently coal, garbage, The utilization of biomass, etc. is still incinerated in the traditional way, which has low efficiency and heavy pollution, and has become tasteless; now the gasification equipment for coal, garbage, biomass, etc. is expensive; many iron-making blast furnaces are facing phase-out; The method and system of coal, garbage and biomass full gasification furnace will become a progress of energy technology