天然气净化厂脱硫脱碳装置的适应性分析  

Adaptability Analysis of Desulfurization and Decarbonization Unit in Natural Gas Purification Plant

作　　者：王静 WANG Jing(PipeChina Engineering Technology Innovation Co.,Ltd.,Tianjin 300450,China)

机构地区：[1]国家管网集团工程技术创新公司,天津300450

出　　处：《辽宁化工》2024年第4期559-561,565,共4页Liaoning Chemical Industry

摘　　要：为分析净化厂脱硫脱碳装置的适应性,利用HYSYS软件建立脱硫脱碳工艺流程的稳态模型,研究原料气气质组分变化对天然气净化度的影响,并对DEA、MEA、PZ三种溶液的活化性能进行了模拟研究。研究结果表明:原料气中CO_(2)含量高于5.9%时,脱硫脱碳装置原有设计参数不再满足净化度的要求;在相同活化剂浓度下,改善脱CO_(2)性能的活化剂顺序由高至低依次是PZ>MEA>DEA,H_(2)S净化度由低至高的活化剂顺序依次为PZ>DEA>MEA。CO_(2)含量小于等于5%的天然气可采用MDEA溶液为吸收溶剂,CO_(2)含量大于5%的天然气宜采用MDEA/DEA溶液为吸收溶剂。In order to analyze the adaptability of the desulfurization and decarbonization unit in the purification plant,the steady-state model of the desulfurization and decarbonization process was established by using HYSYS software,and the influence of the change of raw gas components on the purification degree of natural gas was studied.Moreover,the activation properties of DEA,MEA and PZ solutions were simulated.The results showed that when the CO_(2) content of raw gas was higher than 5.9%,the original design parameters of desulfurization and decarbonization unit could no longer meet the requirements of purification degree.Under the same concentration of activators,the sequence from high to low of activators to improve the performance of CO_(2) removal was as follows:PZ,MEA,DEA.H_(2)S purification degree from low to high in the order of the activator was as follows:PZ,DEA,MEA.MDEA solution could be used as the absorption solvent for natural gas with CO_(2) content less than or equal to 5%,and MDEA/DEA solution should be used as the absorption solvent for natural gas with CO_(2) content greater than 5%.

关 键 词：高含碳天然气 HYSYS 脱硫脱碳 活化MDEA 

分 类 号：TE64[石油与天然气工程—油气加工工程]