淀粉加工企业温室气体排放核算标准与方法研究  

Research on the Standards and Methods for Greenhouse Gas Emission Accounting in Starch Processing Enterprises

作　　者：周英 李双英 ZHOU Ying;LI Shuang-ying(Gansu Province Standardization Research Institute;College of Earth and Environmental Sciences,Lanzhou University)

机构地区：[1]甘肃省标准化研究院 [2]兰州大学资源环境学院

出　　处：《中国标准化》2025年第3期228-236,共9页China Standardization

摘　　要：本文研究适用于淀粉加工企业的温室气体排放核算标准与方法。通过采用国内外、地方温室气体排放核算指南和规范,梳理淀粉工业生产工艺流程和特征,识别核算边界、温室气体排放源和气体种类,核算边界包括燃料燃烧、过程排放(废气和废水处理)和净购入电力、热力产生的排放。细化了工业废水处理过程污泥清除对应的CH4排放计算方法,将N2O纳入核算范围。考虑了沼气回收燃烧减少的CH_(4)排放量和脱硫脱硝产生的排放量。为了避免重复核算,不考虑除碳酸盐以外的药剂产生的CO_(2)排放。电力排放因子应优先选用企业所对应的省级电网平均排放因子,扣除非化石能源电力消费量。此外,不区分生产区和生活办公区,进行整体核算。由此得出淀粉加工企业温室气体精准核算对减排转型至关重要。To study the standards and methods for greenhouse gas(GHG)emission accounting applicable to starch processing enterprises,the paper adopted domestic,international,and local guidelines and specifications for GHG emission accounting.It reviewed the production processes and characteristics of the starch industry,identified accounting boundaries,sources of GHG emissions,and types of gases.The accounting boundaries included emissions from fuel combustion,process emissions(exhaust gases and wastewater treatment),and emissions generated by net purchases of electricity and heat.The paper refined the calculation method for CH4 emissions corresponding to sludge removal in the industrial wastewater treatment process and included N2O in the scope of accounting.It also considered the reduction in CH_(4) emissions due to the recovery and combustion of biogas,as well as the emissions from desulfurization and denitrification processes.To avoid double counting,CO_(2) emissions from reagents other than carbonates were not considered.The emission factor for electricity should preferably use the average emission factor of the provincial grid,to which the enterprise is connected,deducting the consumption of non-fossil fuel electricity.Moreover,the accounting was conducted holistically without distinguishing between production areas and living and office areas.Therefore,it is found that precise accounting of GHG emissions for starch processing enterprises is crucial for emission reduction and transformation.

关 键 词：淀粉加工 温室气体 碳核算 碳减排 

分 类 号：X792[环境科学与工程—环境工程]