摘要
Abstract
During the"15th Five-Year Plan"period,China will accelerate the establishment of a new mechanism for shifting from dual control of energy consumption to dual control of carbon emissions.As a high-carbon emission sector,the green and low-carbon transformation of industrial heating is of crucial importance.Taking the heating cost of traditional coal-fired and gas-fired boilers as the cost comparison benchmark,this paper establishes an industrial steam cost accounting model to conduct a detailed study on the technical feasibility and economy of four low-car-bon heating paths,namely electric heating with thermal storage,high-temperature steam heat pumps,biomass di-rect-fired heating,and biomass gasification gas heating.It also conducts a comparative analysis of the cost compo-nents of different paths,including direct fuel cost of steam,carbon emission cost,and depreciation cost.The results show that,to replace traditional coal-fired and gas-fired heating,biomass gasification gas heating and biomass direct-fired heating have the lowest comprehensive steam cost and nearly zero carbon emissions.They should be taken as the main sources of industrial steam when conditions permit.The second option is the high-temperature steam heat pump system,which is recommended to be applied in the temperature range of 100-120℃;its technical and eco-nomic performance in higher temperature ranges still needs to be verified.The last option is the electric heating with thermal storage method,whose steam cost is significantly affected by electricity prices.Only when the electricity price is lower than 0.25 yuan/kW·h,the steam cost of electric heating with thermal storage is more economical than that of natural gas heating.The research results of this paper can provide references for the selection of industrial heating systems and the formulation of low-carbon transformation policies.关键词
低碳转型路径/工业供热/热泵/生物质供热/生物质气化/熔盐/高温蓄热Key words
low-carbon transformation path/industrial heating/heat pump/biomass heating/biomass gasification/molten salt/high-temperature thermal storage分类
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