Methodology Research For Greenhouse Emissions From Cement Industry In China

Cement industry generates enormous carbon dioxide emissions for the specificrequirement on cement production process. According to the domestic cementproduction capacity in2010, the carbon dioxide emission from cement industryaccounts for20%above of total greenhouse gas emissions countrywide. Under themechanism of a series of international agreement as UNFCCC, the accounting andreporting methodology in cement emission reduction projects has made greatdevelopment. The national greenhouse gas inventories and the corporate greenhousegas emissions accounting are also establishing standard criteria. But a unifieddomestic framework on cement industry emission accounting still needs to beimproved. The approval procedures, applicable standards, implementation processand measuring requirements should fit the current domestic development levelespecially.On the basis of analysis in domestic cement industry, the article estimates thecement production emissions and emission reduction potential at the aspect of fuelsubstitution, raw material substitution, clinker substitution, energy management, lowcarbon cement and carbon capture&storage technique. Through the contrast ofdifferent accounting methodology systems, it summarizes general calculation methodon cement emissions. It concludes that in order to accurate calculation result, theuncertainty of calculation parameters should be reasonably depicted in detail.The article calculates the annual carbon dioxide emission from a5000t/d clinkerproduction line in Jilin. It discusses the organization boundary, baseline, uncertaintyand monitoring method in this instance analysis, and the emission is calculated usingthe measured data. The total emissions from the production line are1.5023milliontons CO2/y. The clinker emission factor is0.9213ton CO2/t clinker and the cementemission factor is0.7388tons CO2/t cement. Through the uncertainty calculation ofsome important parameters, it proposes a monitoring and auditing program undercurrent technical and economic conditions. The report content provides practicalinformation for environmental performance management, life cycle assessment,carbon reduction of voluntary activities and emissions trading activities in cementindustry. This case study also owns reference value for setting up domestic carbonemissions reporting and carbon asset accounting systems...