连续重整联合装置用能优化改进

摘要

介绍了中国石化股份有限公司金陵分公司第Ⅰ套连续重整联合装置节能优化改造及实施情况.通过精馏塔回流比、芳烃抽提溶剂比等操作参数优化,以及换热流程优化调整.增设邻二甲苯与二甲苯换热及采用工艺低温余热加热除盐水等措施有效实现了装置节能,优化改进后联合装置综合能耗下降419 MJ/t,达到了良好的节能效果,同时为下一步的节能改造提出了方案.%The revamping and optimization of energy conservation in the No.1 CCR unit of SINOPEC Jinling Company were introduced.By optimizing the reflux ratios of a series of aromatic fractionation columns and adjusting the solvent/oil ratio of the aromatic extraction system, as well as optimizing heat exchange network by adding an o-xylene/xylene heat exchanger and using low-temperature heat to heat up the demineralized water, the energy consumption of the whole unit was reduced significantly, a 419 MJ/t reduction of comprehensive energy consumption was achieved.Meanwhile, a revamping proposal for further energy conservation was put forward.