油 油 田伴生气净化工艺优化研究及工业应用.

Tahe oilfield produced a large amount of heavy crude oil and associated gas, and the light hydrocarbon was extracted with negative stripping process from heavy crude oil. There were a lot of problems when the light hydrocarbon and associated gas were purified centrally at light hydrocarbon station, such as the total sulfur content in LPG exceeding standard, a lot of alkaline waste produced during the process of light hydrocarbon alkali washing desulfurization, and so on. The application study of UDS desulfurizer during the process of associated gas desulfurization was carried out in order to solve the problem. The results showed that the UDS has good selectivity to both organic sulfur and hydrogen sulfide, and the concentration of total sulfur in LPG could decrease by 86% compared to using MDEA desulfurizer. The application study of light hydrocarbon stripping desulfurization process was carried out, and the results showed that the mass fraction of total sulfur in light hydrocarbon could decrease to less than 0. 03%. Therefore, the stripping process could completely replace the alkaline washing process. A new green and efficient purification process for associated gas with high concentration of sulfur was developed, and it was proved that the process was stable, and could meet the requirement of unit for long cycle operation. [ABSTRACT FROM AUTHOR]