浆纸企业CO_2排放因子分析及计算方法研究

Analysis and research of calculation method for the emission factors of carbon dioxide from pulp and paper mill

根据浆纸生产的工艺特点和生产实际,推导出主流的制浆技术、造纸技术、浆纸废渣替代燃煤、沼气替代燃煤的CO2排放因子分别为0.229,1.304,1.5,3.69t/t.以此为基础并参考相关的资料,分析了纸机的不同部位对CO2排放因子的影响,并模拟了不同生产规模时CO2排放总量.结果表明:浆纸企业CO2排放总量中,造纸系统和废物处理系统占据主导地位分别为54.23%和33.86%,造纸系统和制浆系统中耗热工段对CO2总量的贡献比例分别为75.6%和90.22%,废物处理系统中,浆纸废渣任意弃置和沼气任意排放CO2总量的贡献比例分别为46.06%和47.59%.

According to the production practice and the production process characteristics of Pulping and Papermaking,the emission factors of carbon dioxide（CO2） were deduced to be 0.229,1.304,1.5,3.69t/t respectively for the mainstream of pulping technology,the main-stream of papermaking technology,the pulp paper substitution of coal waste residue,the methane substitution of coal.Based on the above figures and other related materials,the paper analyzed the effects of different parts of paper-making machine on the CO2 emission factors,and simulated the corresponding total CO2 emissions derived from different production scales.It indicated that among the total CO2 emission in paper manufacturing enterprise,the papermaking system and the waste disposal system are responsible for the dominant 54.23% and 33.86% respectively;the power consumption of papermaking system and pulping system contributed 75.6% and 90.22% respectively to the total CO2 emission;while in waste disposal system,the indiscriminate disposal of pulp-and-paper waste residue and the arbitrarily discharged methane contributed 46.06% and 47.59% respectively to the total CO2 emission in this stage.