石油与天然气化工2024，Vol.53Issue(2)：15-22,8.DOI:10.3969/j.issn.1007-3426.2024.02.003
氨基-磷酸改性铁基空心玻璃微珠催化剂用于天然气湿法氧化脱硫
Amino-phosphoric acid modified iron-based hollow glass beads catalyst for wet oxidative desulfurization of natural gas
摘要
Abstract
Objective In order to avoid the problem of equipment blockage caused by sulfur deposition in the conventional natural gas wet oxidation desulfurization process,an iron-based hollow glass beads(HGB)catalyst modified by amino-phosphate difunctional group was developed for the heterogeneous catalytic oxidation regeneration of desulfurization rich liquid in the desulfurization-regeneration step-by-step scheme.Methods Infrared spectroscopy was used to characterize the structure of the catalyst.The effects of the ratio of silane coupling agent(KH-550),roasting temperature and FeCl3·6H2O dosage on the regeneration of desulfurization agent and desulfurization effect were investigated by static desulfurization experiments,and the reusability performance of the catalyst was explored.Results The amino-phosphoric acid modified iron-based HGB catalyst could make the desulfurization rich liquid to be effectively regenerated and remain stable in the acidic desulfurization liquid.Under the conditions of roasting temperature of 300 ℃ for 6 h,mass ratio of HGB to KH-550 of 1∶8 and mass ratio of HGB to FeCl3·6H2O of 1∶5,the iron-based HGB catalyst prepared had the best catalytic performance,and the desulfurization performance kept basically stable after 3 times of repeated regeneration of desulfurization solution.Infrared spectroscopy analysis showed that the catalyst structure remained intact.Conclusions The amino-phosphoric acid modified iron-based HGB catalyst has a good effect on desulfurization rich liquid regeneration in the field of natural gas wet oxidation desulfurization,which provides a new choice for desulfurization rich liquid regeneration at present.关键词
氨基-磷酸/双官能团/天然气/铁基/空心玻璃微珠/湿法氧化脱硫/催化剂Key words
amino-phosphoric acid/bifunctional group/natural gas/iron-based/hollow glass beads/wet oxidation desulfurization/catalyst引用本文复制引用
宣玉娜,陈鸿元,王星渝,杨春韩,袁波,彭锐,刘志豪,邱奎..氨基-磷酸改性铁基空心玻璃微珠催化剂用于天然气湿法氧化脱硫[J].石油与天然气化工,2024,53(2):15-22,8.基金项目
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) （120049-1）
