主要对油田伴生气的轻烃回收工艺进行研究。轻烃回收是油田地面工程中一个重要的步骤。轻烃回收工艺可以有效的降低天然气的露点，防止天然气中的轻烃在输送管道中凝结影响安全输送，并可回收液化石油气和稳定轻油。轻烃回收工艺中增加吸收塔可以获得较高的 C3+收率并有利于提高整个流程的冷量的利用效率。在本文所采取的流程和优化后的工艺参数下所得 C3+的理论收率为95.95%，干气、液化气和稳定轻油可以达到储存要求。%In this paper, the recovery process of light hydrocarbon from associated gas in oil field was investigated. The light hydrocarbon recovery is an important step in the processing of crude oil. The light hydrocarbon recovery can lower the dew point of natural gas to prevent the condensation of the liquid hydrocarbon during the transferring of the gas, and it can recover the LPG and natural gasoline. Adding absorbing column in the light hydrocarbon recovery system can get a high recovery rate of C3+ and be beneficial to get a high utilization efficiency of cool energy of the whole system. By the process and the relevant optimized operating parameters investigated in this paper, the theoretical recovery rate of C3+ can reach to 95.95%, and the dry gas, LPG and natural gasoline can satisfy the requirement of storage.
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