炼油技术与工程 ›› 2022, Vol. 52 ›› Issue (1): 27-32.

• 加工工艺 • 上一篇    下一篇

催化裂化再生烟气三氧化硫脱除技术对比分析

高峰,贠莹,王海波,刘忠生   

  1. 中国石油化工股份有限公司大连石油化工研究院,辽宁省大连市 116045
  • 收稿日期:2021-08-19 出版日期:2022-01-15 发布日期:2022-01-18
  • 作者简介:高峰,工程师,硕士,2014年毕业于中国石油大学(华东)化学工程专业,从事石油化工、环保技术开发及工艺设计工作。联系电话:15840910290, E-mail:gaofeng.fshy@sinopec.com。
  • 基金资助:
    国家重点研发计划专项(2017YFC0210900)

Comparative analysis of the removal technology of SO3 from FCC regeneration flue gas

Gao Feng, Yun Ying, Wang Haibo, Liu Zhongsheng   

  1. SINOPEC Dalian Research Institute of Petroleum and Petrochemicals, Dalian,Liaoning 116045
  • Received:2021-08-19 Online:2022-01-15 Published:2022-01-18

摘要:

碱性吸收剂喷射脱除SO3技术是一种利用碱性吸收剂与烟气中SO3发生酸碱中和反应将其脱除的技术,其对SO3的脱除效率较高且可以缓解脱硝催化堵塞及下游设备腐蚀等问题。对比研究了几种碱性吸收剂对烟气中SO3的脱除效果。实验结果表明:按一定比例复配而成的混合吸收剂比单一吸收剂对SO3有更好的脱除能力,适当提高反应时间和反应温度有利于改善对SO3的脱除效果。为保证碱性吸收剂喷射系统对烟气中SO3的脱除效果和稳定运行,需要对吸收剂调配输送和喷射系统进行合理的工艺设计。

关键词: 催化裂化装置, 再生烟气, 三氧化硫, 碱性吸收剂

Abstract: Alkaline absorbent jet SO3 removal technology is a technology that uses the acid-base neutralization reaction between alkaline absorbent and SO3 in flue gas to remove SO3. It has high SO3 removal efficiency and can alleviate the problems of denitration catalytic blockage and downstream equipment corrosion. The removal effects of several alkaline absorbents on SO3 in flue gas are studied. The experimental results show that the mixed absorbent with a certain proportion has a better removal ability of SO3 than a single absorbent. Appropriately increasing the reaction time and temperature are conducive to improving the removal effect of SO3. In order to ensure the removal effect of SO3 from flue gas and the stable operation of the alkaline absorber injection system, it is necessary to make a reasonable process design for the alkali absorbent mixture, conveying and injection system.

Key words: fluid catalytic cracking unit, regeneration flue gas, SO3, alkali absorbent