氮化碳基羰基硫水解催化剂工业侧线试验  

Industrial side-stream test of carbon nitride compound oxide catalyst for COS catalytic hydrolysis

作　　者：崔吉宏 周家伟 曹文全 邱奎[2] 李长春 肖益鸿[3] Cui Jihong;Zhou Jiawei;Cao Wenquan;Qiu Kui;Li Changchun;Xiao Yihong(Sinopec Guangyuan Natural Gas Purification Co.,Ltd.,Guangyuan,Sichuan,China;School of Chemistry and Chemical Engineering,Chongqing University of Science and Technology,Chongqing,China;National Engineering Research Center of Chemical Fertilizer Catalyst,Fuzhou University,Fuzhou,Fujian,China)

机构地区：[1]中石化广元天然气净化有限公司 [2]重庆科技学院化学化工学院 [3]福州大学化肥催化剂国家工程研究中心

出　　处：《石油与天然气化工》2022年第4期7-12,共6页Chemical engineering of oil & gas

基　　金：“十三五”大型油气田及煤层气开发国家重大专项“高含硫气田集输净化系统安全高效运行技术”(2016ZX05017);中石化集团公司2020年科技项目“有机硫催化水解技术提升元坝气田商品气质量研究”(120049-1)。

摘　　要：目的开发一种新型COS水解催化剂,使天然气中COS含量达到GB 17820-2018《天然气》的要求。方法以工业级尿素制备氮化碳为载体,硝酸镁和硝酸铝为原料,采用共沉淀法在氮化碳表面生长镁铝复合氧化物,进行工业小试生产150 L氮化碳基羰基硫水解催化剂。在中石化元坝西南油气分公司净化厂脱硫单元开展了催化剂工业侧线试验。结果该催化剂在温度为80~120℃、压力为4.8 MPa、空速为1200~2000 h^(-1)的条件下对羰基硫的水解活性达到97.0%~99.5%以上。结论本研究制备的氮化碳复合镁铝氧化物作为COS水解催化剂,具有低温活性好、抗水及耐硫化氢能力强、机械强度高、稳定性能良好等优点,有望实现工业应用。Objective A new COS hydrolysis catalyst was developed to ensure the COS content in natural gas meeting the requirements of GB 17820-2018 Natural gas.Methods Using carbon nitride prepared from industrial grade urea as carrier,magnesium nitrate and aluminum nitrate as raw materials,magnesium aluminum composite oxide was grown on the surface of carbon nitride by co-precipitation method,and 150 L carbon nitride COS hydrolysis catalyst was produced in industrial pilot scale.The industrial side-stream line test of catalyst was carried out in the desulfurization unit of Yuanba Gas Purification Plant,SINOPEC Southwest Oil and Gas Company.Results The hydrolysis activity of the catalyst for carbonyl sulfur reached 97.0%-99.5%at the temperature of 80-120℃,the pressure of 4.8 MPa and the space velocity of 1200-2000 h^(-1).Conclusions The carbon nitride composite magnesium aluminum oxide prepared in this study,as a COS hydrolysis catalyst,has good low-temperature activity,strong water and hydrogen sulfide resistance,high mechanical strength and good stability.It is expected to realize industrial application.

关 键 词：氮化碳 镁铝复合氧化物 羰基硫水解 工业侧线试验 

分 类 号：TE64[石油与天然气工程—油气加工工程]