CO_2-DMC产业链碳足迹分析  

Carbon footprint analysis of CO_2-DMC industrial chain

作　　者：于涵[1] 蒋庆哲[1] 宋昭峥[1] 袁波 

机构地区：[1]中国石油大学重质油国家重点实验室,北京102249 [2]中国石油集团安全环保技术研究院,北京102206

出　　处：《现代化工》2017年第3期9-13,共5页Modern Chemical Industry

基　　金：中国石油天然气集团公司重大科技专项(016E-1209)

摘　　要：基于全生命周期法(LCA)对CO_2-DMC(碳酸二甲酯)产业链碳足迹进行了分析,分别以常规反应塔工艺、膜反应塔工艺和反应精馏塔工艺为对象,考察了各工艺在不同能源供应情景下产业链的碳足迹情况,对原料的获取、原料的运输、燃料的使用、燃料的运输以及产品的配送等环节进行了碳足迹分析。结果表明:3种工艺中反应精馏塔工艺能耗、碳足迹最小,常规反应塔工艺最大;以渣油为燃料常规反应塔工艺单位产品碳足迹最大,碳足迹为1.67 t CO_2/t DMC,以天然气为燃料的反应精馏塔工艺碳足迹最小,单位产品碳足迹为0.70 t CO_2/t DMC;燃料消耗碳足迹在总碳足迹中占比最大,其次为原料上游排放。The carbon footprints of CO2-DMC industrial chain are calculated based on Life Cycle Assessment（ LCA）. Carbon emissions of conventional reactor process,membrane reactor process and reactive distillation process of different fuel consumption scenarios are analyzed. The carbon footprints are divided into five sections including raw material production,raw material transportation,fuel consumption,fuel transportation and DMC distribution. The studies of CO2 emissions are carried out. The results show that the reactive distillation process has the lowest energy consumption and the lowest carbon footprint. By contrast,the conventional reactor has the largest carbon footprint with the carbon footprint of 1. 67 t CO2/ t DMC. The carbon footprint of the reactive distillation process with natural gas as fuel is the smallest and the carbon footprint per unit product is 0. 70 t CO2/ t DMC. The fuel consumption carbon footprint is the largest in the total carbon footprint,followed by the feedstock upstream.

关 键 词：全生命周期法 CO2 碳酸二甲酯 产业链 碳足迹 

分 类 号：X802.3[环境科学与工程—环境工程]