化工学报2016，Vol.67Issue(11)：4705-4715,11.DOI:10.11949/j.issn.0438-1157.20161178
基于传热/传质的乙烯裂解过程脱甲烷塔进料瓶颈识别及流程重构策略
Heat and mass transfer based feed bottleneck identification and reengineering of multi-feed demethanizer in ethylene complex
摘要
Abstract
In the distillation columns, feed composition and temperature always affect the mass exchange and energy utilization, and improper feed-location can cause bad behavior of the separation and energy. To solve the feed position problem of the multi-feed distillation column, a method that identifies improper feed locations is proposed. By defining the conception of the heat transfer temperature driving force and heat transfer rate, mass transfer driving force and mass transfer rate of the tray, the method using the heat / mass transfer composite curve for the bottleneck identification is presented and applied to identify bottlenecks of the multi-feed demethanizer. The strategy that adjusts the feed locations for the process reengineering can achieve the goal of the debottlenecking for the distillation. Process simulation and bottleneck analysis show that the proposed method can identify the feed bottleneck of the demethanizer and the process reengineering can realize the debottlenecking operation. The heat and mass transfer characteristics of the whole tower become better with saving more cold energy.关键词
过程系统/计算机模拟/精馏/脱甲烷塔/瓶颈识别/流程重构/数值分析Key words
process system/computer simulation/distillation/demethanizer/bottleneck identification/process reengineering/numerical analysis分类
能源科技引用本文复制引用
吴博,罗雄麟..基于传热/传质的乙烯裂解过程脱甲烷塔进料瓶颈识别及流程重构策略[J].化工学报,2016,67(11):4705-4715,11.基金项目
国家重点基础研究发展计划项目（2012CB720500）。@@@@Foundation item:supported by the National Basic Research Program of China (2012CB720500) （2012CB720500）
