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催化裂化提升管进料区新型助流剂技术的CFD模拟
Authors
卢春喜
李飞
+4 more
王维
范怡平
闫子涵
陈昇
Publication date
1 January 2016
Publisher
Abstract
为改善提升管进料区气固两相混合状况、消除二次流对近壁面处返混的影响,提出了一种新型助流剂技术。该技术在边壁处形成一层助流剂"保护层",可阻止进料射流与催化剂在边壁处过长接触。通过三维CFD模拟对比了3种助流方式(逆流式、顺流式、交叉式)对传统进料区催化剂与进料混合和边壁返混的改进效果,并对最佳方式下助流剂量做进一步的优化。结果表明,逆流式助流方式最理想,交叉式助流方式最差。合适的逆流式助流方式(如助流剂注入量为进料相总流率的15%时)可改善进料区催化剂与进料相混合,抑制二次流扩张,明显减弱近边壁处(|r/R|>0.9)返混强度。</p
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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Last time updated on 11/04/2021
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/22297
Last time updated on 13/08/2017
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/33950
Last time updated on 05/12/2019