面向水足迹削减的化工生产过程节能技术综合评价  

Comprehensive Evaluation of Energy-saving Technologies in Chemical Production Process Considering Water Footprint Reduction

作　　者：刘瀚泽 王芳[1] Liu Hanze;Wang Fang(College of Environmental and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学环境与安全工程学院,山东青岛266042

出　　处：《广东化工》2023年第17期79-82,91,共5页Guangdong Chemical Industry

基　　金：国家重点研发计划项目(2020YFE0201400)。

摘　　要：在双碳目标的驱动下,节能技术的综合评价受到广泛关注。针对化工生产过程的水资源和能源消耗问题,建立模块化的水-能关联关系核算模型。在此基础上,引入能耗水足迹因子,可得到生产过程的综合能耗水足迹。基于水-能关联关系核算模型,建立了综合能耗水足迹评价模型与经济效益评价模型,并从综合能耗水足迹与经济效益两个角度综合评价对节能技术开展评价。将模型用于某企业的PVC生产过程,结果显示,产品生产过程中综合能耗水足迹为23.02 t/t,是理论新鲜水耗的2.2倍,如同时实施所有节能技术,综合能耗水足迹可削减38.6%。节能技术的选择对综合能耗水足迹削减有显著效果。Driven by the duel carbon goals,comprehensive evaluation of energy-saving technologies has attracted wide attention.To analyze the comprehensive energy and freshwater consumption of chemical production process,the water-energy nexus models are established based on process units.To obtain the comprehensive energy consumption water footprint,the water footprint factors of different energy categories are introduced.To comprehensively evaluate the energy saving technologies,the comprehensive energy consumption water footprint evaluation model and the economic evaluation model are constructed.The proposed models are used in a case study of the PVC process.Results show that the water footprint of comprehensive energy consumption in the production process is 23.02 t/t PVC,which is 2.2 times that of the theoretical freshwater consumption.If all energy saving technologies are implemented together,the water footprint of comprehensive energy consumption can be reduced by 38.6%.Energy-saving technologies have a more significant impact on the water footprint of comprehensive energy consumption.

关 键 词：PVC生产过程 水足迹 节能技术 综合评价 

分 类 号：TQ[化学工程]