摘要
计算机流程模拟技术已成为当今石油化工技术研发、设计和生产优化的有效手段,其核心基础是建立数学模型,利用数学模型模拟复杂工业过程。利用Aspen Plus V12稳态模拟软件对工业对二甲苯(PX)工艺流程中二甲苯塔进行模拟设计,使设计工作更加可靠、高效、节能,在Aspen Plus软件中先后使用简捷塔模块DSTWU、严格精馏塔模块RadFrac、灵敏度分析、可视化水力学分析工具探讨流程模拟软件对精馏塔设计的指导意义。结果表明:软件模拟结果与某厂PX工艺装置设计数据吻合良好,另外通过灵敏度分析,找到了更优的精馏塔进料位置,降低了回流比和塔顶塔釜热负荷,达到了节能降耗的目的,优化了原有设计。同时也利用RadFrac模块内置的塔内件数据讨论了可视化水力学分析在精馏塔设计中的应用,可以很准确地计算塔径,这些都对指导设计工作具有一定的参考价值。
Computer process simulation technology has become an effective means of technology development,design and production optimization for the petrochemical industry.The core basis of computer process simulation is to establish mathematical models and use mathematical models to simulate complex industrial processes.Aspen Plus V12 steady state simulation software is used to simulate the xylene tower in industrial para-xylene(PX)process to achieve a more reliable,efficient and energy-saving design.In Aspen Plus software,DSTWU,RadFrac,sensitivity analysis and visual hydraulics analysis tools are used to explore the guiding significance of process simulation software for the design of rectification tower.The results show that the software simulation results are in good agreement with the design data of the PX unit in a refinery.In addition,through sensitivity analysis,a better feed position is found for the rectification tower,the reflux ratio and the heat load at the top and the bottom of the tower are reduced,and energy saving and consumption reduction is achieved,thus optimizing the original design.At the same time,the application of visual hydraulics analysis in the design of rectification tower is also discussed by using the data of tower internals built in RadFrac module.The tower diameter can be calculated accurately.All these have certain reference value for guiding the design.
作者
石瑶
Shi Yao(Aspen Technology(Beijing)Co.,Ltd.,Beijing 100027)
出处
《中外能源》
CAS
2023年第7期66-72,共7页
Sino-Global Energy
