Adaptability Analysis of Desulfurization and Decarbonization Unit in Natural Gas Purification Plant
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 CO2 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 CO2 removal was as follows:PZ,MEA,DEA.H2S 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 CO2 content less than or equal to 5%,and MDEA/DEA solution should be used as the absorption solvent for natural gas with CO2 content greater than 5%.
High carbon gasHYSYSDesulfurization and decarbonizationActivating MDEA
NETL
NSTL
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