铁基活性组分对COS的吸附及催化转化作用

化工进展

铁基活性组分对COS的吸附及催化转化作用

任秀蓉1，2，王海堂1，3，常丽萍1

1太原理工大学煤科学与技术教育部和山西省重点实验室，山西太原 030024；2太原理工大学现代科技学院，山西太原 030021；3山西焦化设计研究院，山西太原 030024

出版日期:2011-10-05 发布日期:2011-10-05

Adsorption performance and catalytic conversion of iron-based active components on COS

REN Xiurong1，2，WANG Haitang1，3，CHANG Liping1

1Key Laboratory of Coal Science and Technology，Taiyuan University of Technology，Taiyuan 030024，Shanxi，China；2Polytechnic Institute，Taiyuan University of Technology，Taiyuan 030021，Shanxi，China；3 Coking Design Institute of Shanxi Taiyuan 030024，Shanxi，China

Online:2011-10-05 Published:2011-10-05

摘要/Abstract

摘要：

采用共沉淀法制备了脱硫用铁基吸附剂的主要活性组分Fe₂O₃，并对其进行还原处理，制备了不同价态的含铁组分Fe₃O₄和Fe。使用固定床反应装置分别考察了三者在400～500 ℃范围内、COS / N₂和H₂ / COS / N₂两种气氛下对COS的吸附和催化转化的行为。结果表明：在COS / N₂气氛下，三者对COS均有吸附，其吸附能力随温度的变化而异，不同温度下三者对COS吸附的硫容顺序为：Fe₂O₃>Fe₃O₄>Fe（400℃和450℃）；Fe₃O₄> Fe₂O₃>Fe（500℃）。在H₂ /COS / N₂ /气氛下，COS的氢解反应随着温度的升高而增强，各活性组分的硫化产物对COS的氢解反应都具有一定的催化作用，这对于抑制H₂S向COS转化具有积极的作用。

Abstract:

The iron-based active component，Fe₂O₃，was prepared by co-precipitation method. Fe₃O₄ and Fe，were also prepared by reducing Fe₂O₃ at different temperature for different time. The adsorption behavior of them was investigated in COS/N₂ and H₂/COS/N₂ gas streams using the fixed bed reactor at 400 ℃，450 ℃ and 500℃，respectively. The results show that all three active components can adsorb COS and their adsorption ability varies with temperature. At 500℃，the sulfur capacity of Fe₃O₄ is the highest，and that of Fe is the lowest. While at the temperatures of 450 ℃ and 400℃，the sulfur capacity has the following sequence：Fe₂O₃ > Fe₃O₄ > Fe. In H₂/COS/N₂ gas stream，the reaction of COS hydrogenolysis is enhanced by increasing temperature. The iron sulfides have certain catalysis on COS hydrogenolysis and it has an active influence on inhibition of conversion from H₂S to COS.

任秀蓉1，2，王海堂1，3，常丽萍1. 铁基活性组分对COS的吸附及催化转化作用[J]. 化工进展.

REN Xiurong1，2，WANG Haitang1，3，CHANG Liping1. Adsorption performance and catalytic conversion of iron-based active components on COS[J]. Chemical Industry and Engineering Progree.