Revamping Fluid Catalytic Cracking Unit, and Optimizing Catalyst to Process Heavier Feeds

Author:

Stratiev Dicho12ORCID,Ivanov Mihail1,Chavdarov Ivan1,Argirov Georgi1,Strovegli Giulia3

Affiliation:

1. LUKOIL Neftohim Burgas, 8104 Burgas, Bulgaria

2. Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria

3. Kinetics Technology SpA, 00148 Rome, Italy

Abstract

H-Oil gas oils have a higher density and higher nitrogen content, and consequently much lower reactivity than straight-run vacuum gas oils during fluid catalytic cracking (FCC). The conversion of H-Oil gas oils observed in a laboratory catalytic cracking unit at constant operating conditions showed a 20 wt.% lower conversion rate than straight-run hydrotreated vacuum gas oil. Thus, a revamp of commercial FCC units, and the selection of a higher activity catalyst with lower coke selectivity is needed to provide the stable trouble-free operation of the unit. The performed revamp of the commercial FCC unit allowed a stable operation at a higher throughput. It also allowed an increased riser outlet temperature from 532 to 550 °C; increased maximum allowable regenerator temperature from 705 to 730 °C; decreased afterburning from 12 to 6 °C; decreased NOx emissions in the flue gas from 250 to 160 mg/Nm3; improved catalyst regeneration; decreased catalyst losses to 0.0142 kg/t feed; and improved catalyst circulation at a higher throughput. It was confirmed in the commercial FCC unit that the H-Oil light vacuum gas oil is the least reactive H-Oil gas oil during catalytic cracking.

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

Reference41 articles.

1. Kegerreis, C.K., Schweizer, A.E., Welch, R.C., Croela, J., and Wood-Black, F.K. (1998). The Fluid Bed Reactor, American Chemical Society, Division of the History of Chemistry and The Office of Communications.

2. Occelli, M. (2007). Fluid Catalytic Cracking VII: Materials. Methods and Process Innovations, Elsevier Science.

3. Strategies for increasing production of light cycle oil;Hunt;Pet. Technol. Q.,2009

4. Maximum operations;Melin;Hydrocarb. Eng.,2009

5. Feed properties impact on the fluid catalytic cracking unit—Key issues in a diesel market;Stratiev;Oil Gas Eur. Mag.,2011

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3