石油化工设计 ›› 2018, Vol. 35 ›› Issue (4): 35-38.doi: 10.3969/j.issn.1005-8168.2018.04.010

• 工艺优化 • 上一篇    下一篇

催化裂化装置分馏塔顶换热器选用方案的比较分析

宫海峰1,王 斌1,孙明玉2,刘登峰1   

  1. 1.中国石油工程建设公司,山东 青岛 266071;
    2. 中国石油海洋工程有限公司海工事业部,山东 青岛 266555
  • 收稿日期:2018-04-10 接受日期:2018-05-03 出版日期:2018-11-30 发布日期:2019-05-30
  • 通讯作者: 宫海峰,gonghaifeng@cnpccei.cn E-mail:gonghaifeng@cnpccei.cn
  • 作者简介:宫海峰,男,2010年毕业于中国石油大学(华东)化学工艺专业,硕士,工程师,主要从事催化裂化工艺设计工作。联系电话:0532-80950695;E-mail: gonghaifeng@cnpccei.cn

Comparative Analysis of Selection Schemes for Overhead Heat Exchanger of FCC Main Fractionator

Gong Haifeng1, Wang Bin1, Sun Mingyu2, Liu Dengfeng1   

  1. 1. China Petroleum Engineering & Construction Corporation, Qingdao, Shandong, 266071;
    2. CNPC Offshore Engineering Co., Ltd., Qingdao, Shandong, 266555
  • Received:2018-04-10 Accepted:2018-05-03 Online:2018-11-30 Published:2019-05-30
  • Contact: Gong Haifeng,gonghaifeng@cnpccei.cn E-mail:gonghaifeng@cnpccei.cn

摘要: 催化裂化装置分馏塔顶换热器选型对于分馏塔顶油气低温热量的回收以及气压机动力消耗的降低较为关键。以某2.2 Mt/a重油催化裂化装置为例,采用PROII、HTRI等计算软件,对比了分馏塔顶油气-热水换热器采用固定管板式和折流杆式、BJ21S型的传热效率、有效平均温差、压降等,结果表明:固定管板式换热器的压降更低,传热效果更优。针对固定管板式换热器的某些特殊部位,采用PVDesktop软件对其进行了热应力分析认为,分馏塔顶油气-热水换热器采用固定管板式结构受力情况良好,制造难度更小,设备金属消耗量更低。为石油炼制企业延迟焦化装置、加氢装置等分馏塔顶油气冷凝冷却系统设备选型提供了参考

关键词: 催化裂化, 分馏塔顶换热器, 固定管板

Abstract: The type selection of overhead heat exchanger of FCC main fractionator is critical to the recovery of low temperature heat and the reduction in power consumption of wet gas compressor. Taking a 2.2 Mt/a RFCC unit as an example, the PROII and HTRI software are used to compare the heat transfer efficiency, EMTD and pressure drop of different kinds of overhead heat exchangers. The results indicate that fixed tubesheet heat exchanger provides lower pressure drop and higher heat transfer efficiency. PVDesktop software is used to carry out thermal stress analysis for some special locations of the fixed tubesheet heat exchanger, and the results show that fixed tubesheet is suitable for the overhead heat exchanger due to its good stress conditions, easier manufacture and lower metal consumption. This paper provides some useful reference for the type selection of overhead heat exchange systems in the fractionators of delayed coker, hydrogenation unit and other units in refinery

Key words: catalytic cracking/FCC, overhead heat exchanger of fractionator, fixed tubesheet