影响FCC再生立管输送催化剂影响因素的分析

doi:10.16085/j.issn.1000-6613.2019-1486

化工进展 ›› 2020, Vol. 39 ›› Issue (8): 2947-2953.DOI: 10.16085/j.issn.1000-6613.2019-1486

影响FCC再生立管输送催化剂影响因素的分析

彭威¹^,²(), 刘艳升¹(), 韩胜贤², 黄炳庆²

^1.中国石油大学（北京）重质油国家重点实验室，北京 102249
^2.中国石油克拉玛依石化公司，新疆克拉玛依 834003

出版日期:2020-08-01 发布日期:2020-08-12
通讯作者: 刘艳升
作者简介:彭威（1987—），男，博士研究生，工程师，研究方向为流态化、油气加工工艺与工程。E-mail：pwksh@petrochina.com.cn。
基金资助:
中国石油大学（北京）克拉玛依校区科研基金(RCYJ2016B-02-001)

Analysis of the factors affecting the conveyance of catalyst in the regenerated standpipe of FCCU

Wei PENG¹^,²(), Yansheng LIU¹(), Shengxian HAN², Bingqing HUANG²

^1.State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
^2.PetroChina Karamay Petrochemical Complex, Karamay 834003, Xinjiang, China

Online:2020-08-01 Published:2020-08-12
Contact: Yansheng LIU

摘要/Abstract

摘要：

再生立管是FCC装置再生器和提升管反应器之间再生催化剂循环的输送管，其操作复杂性在于立管内催化剂的流态受多种因素影响。本文中在1.0Mt/a FCC装置上，通过测量立管改造前后不同操作条件时的轴向压力分布，考察再生立管输送催化剂的影响因素。生产运行结果表明，影响立管操作的主要因素包括催化剂密度和平均粒径、立管几何结构、滑阀安装位置、松动风性质和流量等；选用低密度催化剂和高黏度流化介质可以减小气泡尺寸，维持反应温度稳定；松动风流量应根据立管推动力、滑阀压降和反应温度及时调整，避免填充流。另外，立管结构和滑阀的安装位置对立管推动力影响较大，分析结果可供立管设计和装置改造参考。

关键词: 催化裂化, 立管, 流态化, 嚗气, 气泡

Abstract:

The regenerated standpipe is used for conveying the regenerated catalyst between the regenerator and the riser in FCC unit. The flow patterns of catalyst in standpipe are influenced by many factors which complicates the operation. The influence factors of conveying catalyst in standpipe were investigated by measuring the axial pressure distribution inside the standpipe at different operating conditions on a 1.0Mt/a FCC unit. The operation result showed that the main factors affecting the standpipe operation included the density and average particle size of the catalyst, structure of standpipe, the position of slide valve, the properties and flow rate of the aeration gas, et al. Low density catalyst and high viscosity aeration gas can reduce bubble size and maintain stable reaction temperature. Aeration gas rate should be adjusted in time according to the standpipe driving force and slide valve pressure drop to avoid packed bed flow. In addition, standpipe structure and the position of the slide valve had great influence on the standpipe driving force. The analysis made in this work can be used as reference for the standpipe design and the revampment of FCC unit.

Key words: catalytic cracking, standpipe, fluidization, aeration, bubble

中图分类号:

TE624

彭威, 刘艳升, 韩胜贤, 黄炳庆. 影响FCC再生立管输送催化剂影响因素的分析[J]. 化工进展, 2020, 39(8): 2947-2953.

Wei PENG, Yansheng LIU, Shengxian HAN, Bingqing HUANG. Analysis of the factors affecting the conveyance of catalyst in the regenerated standpipe of FCCU[J]. Chemical Industry and Engineering Progress, 2020, 39(8): 2947-2953.

参考文献

1	陈俊武, 许友好. 催化裂化工艺与工程(下册)[M]. 第3版. 北京：中国石化出版社, 2015: 917-920.
1	CHEN Junwu, XU Youhao. Catalytic cracking process and engineering(part II)[M]. 3rd ed. Beijing: Sinopec Press, 2015: 917-920.
2	卢春喜, 王祝安. 催化裂化流态化技术[M]. 北京: 中国石化出版社, 2002: 120-122.
2	LU Chunxi, WANG Zhuan. Catalytic cracking fluidization technology[M]. Beijing: Sinopec Press, 2002: 120-122.
3	魏耀东, 刘仁恒, 孙国刚, 等. 负压差立管内气固流动的不稳定性实验分析[J]. 过程工程学报, 2003, 3(6): 493-497.
3	WEI Yaodong, LIU Renhuan, SUN Guogang, et al. Instability analysis on gas-solid two-phase in the standpipe under negative pressure gradient in circulating fluidized bed[J]. Chinese Journal of Process Engineering, 2003, 3(6): 493-497.
4	罗保林, 宗祥荣, 王中礼, 等. 垂直立管中催化剂流动特性的实验研究[J]. 过程工程学报, 2005, 5(2): 119-124.
4	LUO Baolin, ZONG Xiangrong, WANG Zhongli, et al. Experimental study on flow characteristics of catalyst in the standpipe[J]. Chinese Journal of Process Engineering, 2005, 5(2): 119-124.
5	邢颖春, 卢春喜. 某催化裂化装置催化剂循环管线松动点的改造[J]. 石化技术与应用, 2008, 26(1): 49-54.
5	XING Yingchun, LU Chunxi. Revampment on distribution of aeration orifice in catalyst circulation pipe of a fluidized catalyst cracking plant[J]. Petrochemical Technology& Application, 2008, 26(1): 49-54.
6	李玉飞, 王明东, 侯玉宝. R2R型催化裂化装置流化问题探究[J]. 炼油技术与工程, 2019, 49(12): 29-32.
6	LI Yufei, WANG Mingdong, HOU Yubao. Research on fluidization problem in R2R FCC unit[J]. Petroleum Refinery Engineering, 2019, 49(12): 29-32.
7	严超宇, 魏志刚, 宋健菲, 等. 半再生立管输送催化剂不畅的原因分析和改进措施[J]. 石油炼制与化工, 2017, 48(9): 75-77.
7	YAN Chaoyu, WEI Zhigang, SONG Jianfei, et al. Analysis of catalyst conveying fault in semi-regenerative standpipe of FCCU and related measures[J]. Petroleum Processing and Petrochemicals, 2017, 48(9): 75-77.
8	SUNG W K, DOYEON L. Effect of fines content on fluidity of FCC catalysts for stable operation of fluid catalytic cracking unit[J]. Energies, 2019, 12: 293-303.
9	YUKI H, TAKAMI K. Decrease in the fluidization quality of fluidized beds containing binary mixtures of different catalyst particles[J]. Chemical Engineering Science[J]. 2013, 96: 98-105.
10	GELDART D, RADTKE A. The effect of particle properties on the behaviour of equilibrium cracking catalyst in standpipe flow[J]. Powder Technology, 1986, 47: 157-165.
11	严超宇, 王迪, 贾梦达, 等. 催化裂化装置立管输送催化剂异常原因分析[J]. 石油学报(石油加工), 2018, 34(1): 94-100.
11	YAN Chaoyu, WANG Di, JIA Mengda, et al. Cause analysis of catalyst conveying fault in standpipe of FCC units[J]. Acta Petrolei Sinica (Petroleum Processing Section), 2018, 34(1): 94-100.
12	LEUNG L S, JONES P J. Flow of gas-solid mixtures in standpipes：a review[J]. Powder Technology, 1978, 20: 145-160.
13	李洪钟. 立管移动床气固流动相图及理想料封状态[J]. 化学工程, 1989, 17(5): 28-34.
13	LI Hongzhong. Gas-solid flow phase diagram of standpipe moving bed and ideal material seal state[J]. Chemical Engineering, 1989, 17(5): 28-34.
14	王创博, 石睿捷, 马玲, 等. 斜管内FCC催化剂流态与阀门开度关系的实验研究[J]. 石油学报(石油加工), 2019, 35(1): 146-152.
14	WANG Chuangbo, SHI Ruijie, MA Ling, et al. Experimental study on the relationship between FCC catalyst flow pattern and butterfly valve open ratio in the inclined pipe[J]. Acta Petrolei Sinica (Petroleum Processing Section), 2019, 35(1): 146-152.
15	曹晓阳, 孔文文, 魏耀东, 等. FCC催化剂在45°斜管内下料特性的实验分析[J]. 石油学报(石油加工), 2016, 32(6): 1113-1120.
15	CAO Xiaoyang, KONG Wenwen, WEI Yaodong, et al. An experimental analysis of flow characteristics of FCC catalyst in the 45° inclined standpipe[J]. Acta Petrolei Sinica (Petroleum Processing Section), 2016, 32(6): 1113-1120.
16	曹晓阳, 周发戚, 陈勇, 等. 循环流化床颗粒输送斜管的压力脉动特性[J]. 石油学报(石油加工), 2016, 32(5): 913-920.
16	CAO Xiaoyang, ZHOU Faqi, CHEN Yong, et al. Characteristics of pressure fluctuations in the particle-transport inclined standpipe of a circulating fluidized bed[J]. Acta Petrolei Sinica (Petroleum Processing Section), 2016, 32(5): 913-920.
17	LEUNG L S, WILSON L A. Downflow of solids in standpipes[J]. Powder Technology, 1973, 7: 343-349.

[1]	杨寒月, 孔令真, 陈家庆, 孙欢, 宋家恺, 王思诚, 孔标. 微气泡型下向流管式气液接触器脱碳性能[J]. 化工进展, 2023, 42(S1): 197-204.
[2]	盛维武, 程永攀, 陈强, 李小婷, 魏嘉, 李琳鸽, 陈险峰. 微气泡和微液滴双强化脱硫反应器操作分析[J]. 化工进展, 2023, 42(S1): 142-147.
[3]	王太, 苏硕, 李晟瑞, 马小龙, 刘春涛. 交流电场中贴壁气泡的动力学行为[J]. 化工进展, 2023, 42(S1): 133-141.
[4]	许友好, 王维, 鲁波娜, 徐惠, 何鸣元. 中国炼油创新技术MIP的开发策略及启示[J]. 化工进展, 2023, 42(9): 4465-4470.
[5]	奚永兰, 王成成, 叶小梅, 刘洋, 贾昭炎, 曹春晖, 韩挺, 张应鹏, 田雨. 微纳米气泡在厌氧消化中的应用研究进展[J]. 化工进展, 2023, 42(8): 4414-4423.
[6]	陈蔚阳, 宋欣, 殷亚然, 张先明, 朱春英, 付涛涛, 马友光. 矩形微通道内液相黏度对气泡界面的作用机制[J]. 化工进展, 2023, 42(7): 3468-3477.
[7]	章凯, 金捍宇, 刘思宇, 王帅. 鼓泡流态化气泡间相互作用下相间传质过程的模拟[J]. 化工进展, 2023, 42(6): 2828-2835.
[8]	金涌, 程易, 白丁荣, 张晨曦, 魏飞. 中国流态化技术研发史略[J]. 化工进展, 2023, 42(6): 2761-2780.
[9]	袁守正, 陈啸, 蒋鸣, 余亚雄, 周强. 气固下行床中壁面对介尺度曳力的影响规律[J]. 化工进展, 2023, 42(5): 2272-2281.
[10]	陈磊, 田科, 曾力, 张俊丰, 黄妍, 何峰. 焦化脱硫废杂盐资源化新技术[J]. 化工进展, 2023, 42(1): 480-487.
[11]	陈二军, 张玉玲, 路少磊, 段海洋, 靳文章. 空气纳米气泡的稳定性及理化特性[J]. 化工进展, 2022, 41(9): 4673-4681.
[12]	张伟, 王军锋, 苏巧玲, 吴天一. 针-环电极配置下电场对气泡分散特性的影响[J]. 化工进展, 2022, 41(6): 2931-2938.
[13]	尹少武, 张朝, 康鹏, 韩嘉维, 王立. 硅粉氮化输送床内气固反应过程数值模拟[J]. 化工进展, 2022, 41(5): 2256-2267.
[14]	张春超, 潘艳秋, 杜宇杰, 高石磊, 俞路. 喷雾冷却中液滴撞击带气泡液膜的数值模拟[J]. 化工进展, 2022, 41(4): 1735-1741.
[15]	方东, 何怡, 崔笑晨. FCC重循环油选择性加氢改质-催化裂化多产高附加值产品[J]. 化工进展, 2022, 41(12): 6358-6363.

影响FCC再生立管输送催化剂影响因素的分析

Analysis of the factors affecting the conveyance of catalyst in the regenerated standpipe of FCCU

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价