石油学报(石油加工) ›› 2017, Vol. 33 ›› Issue (5): 803-810.doi: 10.3969/j.issn.1001-8719.2017.05.001

• 特约报告 • 上一篇    下一篇

PX吸附分离技术核心内构件开发

朱振兴1,王少兵1,戴厚良2   

  1. 1. 中国石化 石油化工科学研究院,北京 100083;
    2. 中国石油化工股份有限公司, 北京 100728
  • 收稿日期:2017-06-07 修回日期:2017-06-09 出版日期:2017-09-25 发布日期:2017-11-29
  • 通讯作者: 戴厚良,男,教授级高级工程师,从事石油勘探、炼油、化工等领域的研究;Tel:010-59962408; E-mail:sunyou@sinopec.com E-mail:zhouxg@sinopec.com
  • 作者简介:第一作者:朱振兴,男,高级工程师,博士,从事计算流体力学、反应器和内构件开发 、过程建模等领域的研究;E-mail:zhuzx.ripp@sinopec.com
  • 基金资助:
    中国石化科研开发项目(110117)资助

Development of Key Internals of Adsorption Separation Technology for PX

ZHU Zhenxing1, WANG Shaobing1, DAI Houliang2   

  1. 1. Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China;
    2. China Petroleum & Chemical Corporation, Beijing 100728, China
  • Received:2017-06-07 Revised:2017-06-09 Online:2017-09-25 Published:2017-11-29

摘要: 对二甲苯(PX)是一种重要的有机化工原料,工业上主要采用逆流模拟移动床吸附分离技术(AST)生产高纯度对二甲苯。格栅作为吸附塔的内构件,是模拟移动床吸附分离技术的核心之一。根据格栅的功能,开发了ACG基准格栅,运用冷模实验和计算流体力学相结合的方法,对ACG基准格栅进行优化,开发出性能优良的ACG-Ⅰ格栅。针对3*104 t/a PX工业装置,将ACG-Ⅰ格栅进行放大试验。运行情况表明,开发的ACG-Ⅰ格栅性能优良,工业数据与CFD模拟数据比较吻合。

关键词: 对二甲苯(PX), ;吸附;格栅;冷模试验;计算流体力学(CFD);分布

Abstract:

Para-Xylene (PX), is an important organic chemical material, which is usually purified from xylene isomers through Adsorption Separation Technology (AST) in a Simulated Moving Bed (SMB). As a key technology of SMB, the grid inside the adsorption tower is always a wall prevented the complete set of AST from nationalization. A method combined computational fluid dynamics (CFD) with cold test was applied in conquering this barrier. An ACG reference grid was developed based on the functions of the grids. Then a series of CFD simulations and cold tests were carried out to optimize the ACG grids and proved the reliability of the developing method. After incessant optimization, a highperformance grid, ACG-Ⅰ, was developed and scaled up for a PX demonstration plant with annual output of 30000 ton. It can be shown from the operating data that the performances of the ACG-Ⅰare very excellent, and the deviation of the value of pressure drop of the grid between the operating data and CFD data is very small.

Key words: para-xylene(PX), adsorption, grid, cold test, computational fluid dynamics(CFD), distribution