低碳化学与化工2024，Vol.49Issue(10)：129-135,7.DOI:10.12434/j.issn.2097-2547.20230423
甘氨酸及其与PVP K90复合抑制剂对二氧化碳水合物生成的影响
Effects of glycine and its composite inhibitor with PVP K90 on formation of carbon dioxide hydrate
摘要
Abstract
Large-scale carbon capture requires the transportation of carbon dioxide(CO2)through pipelines.The formation of CO2 hydrate can affect the safety of pipeline transportation.Glycine has a strong disturbing effect on water molecules and can inhibit the formation of CO2 hydrate.Using a high-pressure visual reaction kettle as the experimental platform,the formation of CO2 hydrate was studied in single glycine systems and their composite systems with polyvinylpyrrolidone(PVP K90)under the conditions of temperature 275.15 K,pressure 3.5 MPa and stirring speed 700 r/min.The results show that the inhibition effect is best in the single system when the glycine concentration(mass fraction)is 4.0％,and the induction time is 439.02％of that of the pure water system.The highest point of the temperature rise during hydrate formation shows a trend of first decreasing and then increasing with the increase of glycine concentration.The compounding of glycine and PVP K90 can significantly prolong the induction time of hydrate formation and lower the highest point of temperature rise.Among them,the inhibition effect of the compounding 4.0％glycine and 0.7％PVP K90 is the best.Compared with the single system of 4.0％glycine,the induction time is extended by 105.43％and the highest point of temperature rise is lowered by 0.15％.This study can provide a reference for the development of hydrate inhibitors.关键词
动力学抑制剂/聚乙烯吡咯烷酮/甘氨酸/二氧化碳/水合物Key words
kinetic inhibitor/polyvinylpyrrolidone/glycine/carbon dioxide/hydrate分类
能源科技引用本文复制引用
杨帆,周诗岽,肖雁云,吴志磊,徐义轩,赵玉儿..甘氨酸及其与PVP K90复合抑制剂对二氧化碳水合物生成的影响[J].低碳化学与化工,2024,49(10):129-135,7.基金项目
国家自然科学基金(51974037). （51974037）
