Input-output method-based blast furnace-converter long-process steel production process CO2 emission examining method

Abstract

An input-output method-based blast furnace-converter long-process steel production process CO2 emission examining method is used for examining the emission load of CO2 per ton of steel of a long-process steel plant on the basis of consumption data of raw materials going in and out of the steel plant and energy. The examining method comprises the steps that firstly a material inlet, an energy source inlet, a product outlet and an emission outlet of a production system of the steel plant are determined and form the system boundary of the steel plant; the consumption of the raw materials going in and out of the system boundary and that of energy items are counted, and the CO2 emission of each raw material or that of each energy item is obtained by multiplying the consumption of the raw material or that of the energy item by a CO2 emission coefficient; the CO2 emission of all material items entering the system and that of the energy items are summed, and the summed result is subtracted by deduction carbon equivalent values of byproducts and emissions to obtain the total CO2 emission of the plant; the total CO2 emission is divided by total steel output to obtain the CO2 emission value per ton of steel of the steel plant. Although the precision is not high, the examining time and manpower demands can be remarkably reduced by using secondary data of the steel plant.

Description

technical field [0001] This application relates to the field of iron and steel metallurgy, specifically a method based on the input-output method for checking the CO2 of a ton of steel in a blast furnace-converter long-process iron and steel plant. 2 method of emissions. technical background [0002] The increasing impact of greenhouse gases on the global climate, CO 2 As a major greenhouse gas, it has attracted worldwide attention due to its huge emissions. The Chinese government attaches great importance to the issue of climate change, has adopted a series of policy measures, and promised to the world: from 2009 to 2020, the CO2 per unit of GDP 2 Emissions will drop by 40%-45% compared to 2005. The National Twelfth Five-Year Plan outlines the strategic goals of reducing energy consumption per unit of GDP by 16% and reducing carbon intensity by 17% during the "Twelfth Five-Year Plan" period. In order to strictly implement these goals and tasks, the State Council issued ...

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Problems solved by technology

However, the disadvantage of this method is the loss of details, and the accuracy of the check is not high

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