
第18卷第3期 2018年6月
流动与传递 asra
过程工程学报
The Chinese Joumal of Process Engineering
VoL.18 No.3 June2018
DOI: 10.12034/j.issn.1009-606X.217291
烟气轮机叶片表面颗粒沉积粘附模型
陈帅甫,王建军,金有海
[中国石油大学(华东)化学工程学院,山东青岛266580]
摘要:建立了催化剂颗粒在烟气轮机叶片表面沉积粘附模型,将催化剂颗粒与叶片表面的碰撞处理为理想弹塑性球体与刚性平面的碰撞进行数值计算,结果表明,模型预测的催化剂颗粒在烟气轮机叶片表面沉积粘附的部位与实际工况一致,所建模型可有效地预测催化剂颗粒沉积粘附的发生部位
关键调:催化裂化:烟气轮机;颗粒:沉积;模型
中图分类号:TQ051.1
文献标识码:A
文章编号:1009606X(2018)03044707
Model of ParticleDeposition and AdhesiononBlade Surfaceof FlueGasTurbine
ShuaifuCHEN,
JianjunWANG',YouhaiJIN
[College of Chemical Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China]
Abstract: A model of catalyst particles deposition and adhesion on the blade surface of flue gas turbine was promoted, treating the collision between catalyst particles and the blade surface as elastic-perfectly plastic spheres collision with rigid plane, which was used as the basis of numerical calculations. The results showed that the location of catalyst particles deposition and adhesion on the blade surface of flue gas turbine predicted by the model was consistent with the location of deposition and adhesion found in actual conditions, proving
that the model can predict the occurrence location of the catalyst particles deposition and adhesion effectively. Key words: fluid catalytic cracking; flue gas turbine; particle; deposition; model
前言 1
催化裂化烟气轮机(烟机)作为炼油厂催化裂化能量回收装置的核心设备,将高温高压烟气的部分能量转换为转子的机械能,与汽轮机一起带动主风机为再生器供风,甚至可带动发电机发电,从而降低催化裂化装置的能耗,提高经济效益[1.2].典型的催化裂化装置能量回收系统如图1(2)所示
烟机的工作条件非常昔刻,入口处烟气的温度高达 590~690℃,压力约为270~320kPa.高温烟气中含有上游工艺未完全除净的催化剂颗粒,会在烟气轮机的静叶片和动叶片上沉积结垢(图2),当动叶片上的结垢发展到一定程度时,会使效率显著降低;若部分结垢脱落,转子动平衡被破坏,振动加剧甚至超标会造成停机.研
收稿日期:2017-08-07,修回日期:2017-10-25
基金项目:山东省自然科学基金资助项目(编号:ZR2015EM026)
究高温高压烟气中催化剂颗粒在叶片上沉积的规律,建立合理有效的预测模型,对保障催化裂化装置的安全平稳长周期运行、提高经济效益有重要意义
1.Regenerator 5. Flue gas turbine 8.Gearbox
图1
Fig.1
2.Cyclone 6.Main fan 9.Generator
3. Boiler
7. Steam turbine
4.Chimney
催化裂化高温烟气能量回收系统[2]
作者第介:陈师南(1988-),男,河南省辉县市人,博士研究生,动力工程及工程热物理专业,E-mail:linxuan1958@163.com:王建军,通讯联系人
E-mail:wangijo1upc.edu.cn.
引用格式:陈帅角,王建军,金有海、烟气轮机叶片表面颗粒沉积粘附模型,过程工程学报,2018,18(3):447-453
Chin. J. Process Eng-, 2018, 18(3): 447453, DOI: 10.12034/j.issn.1009-606X.217291.
万方数据