Improvement and Optimization of Two Reactor H<sub>2</sub>S Selective Oxidative in Sulfur Recovery Process

Related Articles

Abstract A natural gas purification plant with sulfur recovery unit in Shan'xi province which using H₂S selective oxidation technology was put into operation in January 2016. Some problems such as hot spot temperature higher than 300℃ in isothermal reactor and sulfur entrainment from separator were detected, resulting in high concentration of SO₂ in flue gas. Through operation data analyzing, and combining laboratory experiment and simulation, the asymmetry distribution of the reactor boiler's steam pipe is determined as the main reason of the high temperature hot spot. The gas velocity in the sulfur separator is lower than the design value which lead to more sulfur entrainment. Targeted modification to the unit were conducted to make the plant running more stable, including uniform distributing reactor boiler's steam pipe, increasing the gas velocity in sulfur separator by decrease internal's area. The results showed lower hot spot temperature (<300℃), higher yield of sulfur recovery, and decreasing of SO₂ concentration to lower than 4 000 mg/Nm³ in flue gas.

	Service

	Email this article
	Add to my bookshelf
	Add to citation manager
	Email Alert
	RSS
	Articles by authors
	Zhai Ruiguo
	Dang Xiaofeng
	Xia Yong
	Huang Changmeng
	Chen Xing
	Lv Jing

Keywords： selective oxidation； sulfur recovery； hot spots； sulfur entrainment

Received 2018-10-29;

About author:

Cite this article:

Zhai Ruiguo, Dang Xiaofeng, Xia Yong, Huang Changmeng, Chen Xing, Lv Jing.Improvement and Optimization of Two Reactor H₂S Selective Oxidative in Sulfur Recovery Process[J] Chemcial Industry and Engineering, 2019,V36(5): 17-24

[1] 李菁菁, 闫振乾. 硫黄回收技术与工程[M]. 北京:石油工业出版社, 2010
[2] 王开岳. 天然气净化工艺:脱硫脱碳、脱水、硫磺回收及尾气处理[M]. 北京:石油工业出版社, 2005
[3] 汪家铭. 超优克劳斯硫回收工艺技术及应用前景[J]. 化肥设计, 2009, 47(4):18-21 Wang Jiaming. Super-Fine Claus sulfur recovery process technology and application prospect[J]. Chemical Fertilizer Design, 2009, 47(4):18-21(in Chinese)
[4] 白喜林, 黄朝齐, 蒋芙蓉, 等. 氧化催化剂在超级克劳斯硫回收装置中的运用[J]. 化肥设计, 2005, 43(4):26-28, 31 Bai Xilin, Huang Zhaoqi, Jiang Furong, et al. Application of oxidation catalyst in super-class Claus sulfur recovery unit[J]. Chemical Fertilizer Design, 2005, 43(4):26-28, 31(in Chinese)
[5] 杨彦伟, 许荣德, 王中刚, 等. 选择性氧化硫化氢成为元素硫的催化剂及反应工艺:中国,CN101380582A[P]. 2009-03-11
[6] 朱国强, 王志雄, 武军山, 等. 神华宁煤甲醇厂克劳斯硫回收系统硫堵原因分析[J]. 石油与天然气化工, 2011, 40(3):250-253 Zhu Guoqiang, Wang Zhixiong, Wu Junshan, et al. Causes analysis of sulfur blockage in Claus sulfur recovery system in Shenhua NCPP methanol plant[J]. Chemical Engineering of Oil & Gas, 2011, 40(3):250-253(in Chinese)
[7] 张路. 克劳斯硫回收工艺技术改造[J]. 化工生产与技术, 2011, 18(5):59-60, 10 Zhang Lu. Technical improvement of Claus sulfur recovery process[J]. Chemical Production and Technology, 2011, 18(5):59-60, 10(in Chinese)
[8] 姜斌, 薛尚龙, 董佳鑫, 等. 列管反应器改进结构环形分布器内变质量流动的数值分析[J]. 化学工业与工程, 2016, 33(3):89-95 Jiang Bin, Xue Shanglong, Dong Jiaxin, et al. Numerical analysis of variable mass flow inside improved structure circular distributor in tubular reactor[J]. Chemical Industry and Engineering, 2016, 33(3):89-95(in Chinese)