【摘要】 对丁基橡胶装置溶剂回收工段进行全流程模拟,将溶剂提纯塔和催化剂溶剂塔合并为一个塔——氯甲烷塔,溶剂级氯甲烷采用侧线采出,并以有效能损失最小为目标,通过灵敏度分析对氯甲烷塔的理论板数、进料位置、侧线采出位置及塔顶气相采出量进行优化。实验结果表明,所建模型能够准确模拟溶剂回收工段流程,可用于进行溶剂回收工段流程优化改进研究;对氯甲烷塔优化后,溶剂回收工艺最终可节能35%,优化后工艺流程相比原工艺流程固定资本投资减少了16.69%,公用工程费用减少了32.38%,年总成本最终降低了30.27%,具有较大的经济效益。更多还原

【Abstract】 The process simulation of the solvent recovery system of a butyl rubber plant was carried out by integrating a solvent purification column and a catalyst solvent column into a new solvent purification column(T-0),in which a side-stream was added to obtain solvent methyl chloride.The number of theoretical plates,feed stage,side-stream stage and gas flow rate in the top of T-0 were optimized by sensitivity analysis.Reboiler heat duty distribution between thermally coupled distillation columns was optimized to minimize total energy loss.The experimental results showed that the model could accurately simulate the solvent recovery system and could be used to optimize the process of the solvent recovery system.The above optimization would eventually lead to a decrease of 35% in energy consumption.The economic benefits showed that the fixed capital investment,utility cost and total annual cost were decreased by 16.69%,32.38% and 30.27%,respectively,as compared with that of the original process.The economic benefits are very significant.更多还原