Study On Carbon Emission Reduction In Blast Furnace Gas Recovery And Power Generation Project

Blast furnace gas as a by-product of blast furnace ironmaking process,contains a large number of unused heat.If the iron and steel enterprises to use blast furnace gas recovery technology to recover unused blast furnace gas for power generation,Blast furnace gas power generation theoretically reduced the consumption of coal-fired power generation,thereby reducing the carbon dioxide emissions from coal combustion.It can be said that the blast furnace gas recovery power generation project has a certain carbon reduction efficiency.Application of carbon emission reduction method,can be expected to blast furnace gas project annual carbon reduction.According to the approved domestic GHG voluntary emission reduction project(CCER project),the carbon emission reduction project currently involved in blast furnace gas recovery and power generation technology is generally calculated using the voluntary emission reduction method CM-005-V01"Reduce greenhouse gas emissions through waste recycling".However,in the process of quantifying carbon emission reduction in the application of CM-005-V01in blast furnace gas power generation,it founds that there is a shortage of method in terms of applicable conditions,update degree and some calculation methods and monitoring factors.Therefore,this paper explores the methods of carbon reduction and emission reduction that more suitable for blast furnace gas recovery and power generation projects in China's steel industry,based on the methodology of CM-005-V01First of all,the author based on the methodology CM-005-V01 to establish suitable for China's blast furnace gas recovery power generation project carbon reduction method,for the applicable conditions,project boundaries,baseline scene identification,baseline greenhouse gas emissions,project greenhouse gas emissions,Leakage and greenhouse gas emission reduction and other aspects of research,and to determine the methodology of monitoring and verification methods.Subsequently,the author applies the specific case to this methodology to estimate the amount of carbon reduction.North China's iron and steel enterprises blast furnace gas recovery and power generation projects,the existing two 550m~3blast furnace and a580m~3blast furnace,per hour by-product 307280~325250Nm~3blast furnace gas,in addition to some used in hot air stove,converter,white ash kiln and other production equipment Recovery,and about 42%of the blast furnace gas is not recovered,the project did not use the blast furnace gas by the medium temperature medium pressure pure gas boiler for power generation,through the application of methodological calculation of the project is expected to reduce annual greenhouse gas emissions 145102tons of carbon dioxide equivalent.Finally,the carbon emissions from the case of production verification and data processing analysis,calculate the actual emission reductions,and the estimated emission reductions to verify the feasibility of methodology.This paper realizes the improvement of"Report,Measurement and Verification"(MRV)system for blast furnace gas recovery and power generation project,which can provide reference for carbon emission reduction calculation and data monitoring of related projects in China.