引用本文:刘宗社,李金金,陈昌介,朱荣海. 天然气中有机硫固定床转化催化剂的研究[J]. 石油与天然气化工, 2020, 49(4): 14-21.
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天然气中有机硫固定床转化催化剂的研究
刘宗社1,2,李金金1,2,陈昌介1,2,朱荣海1,2
1.中国石油西南油气田公司天然气研究院;2.国家能源高含硫气藏开采研发中心
摘要:
针对川东北高含硫气田开发中的高浓度有机硫问题,利用多元金属络合固定床转化催化剂制备技术,研究开发了天然气中气相固定床羰基硫(COS)水解催化剂,实验考察了催化剂在不同温度、空速、气体组成下的水解转化率影响,根据研究结果推荐了天然气中COS水解催化剂的使用条件。以川东北高含硫气田胺液吸收塔出口湿净化气为基础,当COS质量浓度为200~300 mg/m3时,考察了催化剂连续运行200 h的COS水解性能稳定性。结果 表明,COS水解率大于97%,反应器出口COS质量浓度小于10 mg/m3。天然气中气相固定床催化水解技术和配套水解催化剂可用于解决川东北高含硫气田以COS为主的有机硫脱除处理,使商品天然气达到GB 17820-2018《天然气》中总硫质量浓度小于20 mg/m3的要求。 
关键词:  天然气  有机硫  羰基硫  GB 17820-2018  固定床  催化剂  总硫
DOI：10.3969/j.issn.1007-3426.2020.04.003
分类号:
基金项目:中国石油天然气股份有限公司科学研究与技术开发项目“高酸性天然气高效处理技术研究”(2019D-1609)；中国石油西南油气田公司科技计划项目“天然气中羰基硫水解技术现场试验”(20180306KS-01)
Study on fixed bed conversion catalyst for organic sulfur in natural gas
Liu Zongshe1,2, Li Jinjin1,2, Chen Changjie1,2, Zhu Ronghai1,2
1. Research Institute of Natural Gas Technology, PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, China;2. National R & D Center for High Sulfur Gas Exploitation, Chengdu, Sichuan, China
Abstract:
In view of the problem of high concentration organic sulfur occurring in the development of northeastern Sichuan high sulfur gas field, a gas-phase fixed bed catalyst for the hydrolysis of carbonyl sulfide in natural gas was studied and developed by using the preparation technology of multi-element metal complex fixed catalyst. The factors influencing the hydrolysis conversion rate of catalyst under different temperature, space velocity and gas composition were investigated experimentally. According to the research results, the application conditions of hydrolysis catalyst for carbonyl sulfide in natural gas were recommended. Based on the wet purified gas at the outlet of amine liquid absorber in northeastern Sichuan high sulfur gas field, when the mass concentration of carbonyl sulfur was 200-300 mg/m3, the catalyst stability of carbonyl sulfide hydrolysis with continuous operation for 200 h was investigated. The results showed that the hydrolysis rate was greater than 97%, and the mass concentration of carbonyl sulfide at the reactor outlet was less than 10 mg/m3. Gas phase fixed bed catalytic hydrolysis technology and matching hydrolysis catalyst in natural gas could be used to solve the removal of organic sulfur dominated by carbonyl sulfide in northeastern Sichuan high sulfur gas field. The total sulfur mass concentration in commercial natural gas was less than 20 mg/m3 which met the requirement of GB 17820-2018 Natural Gas.
Key words:  natural gas  organic sulfur  carbonyl sulfide  GB 17820-2018  fixed bed  catalyst  total sulfur