【摘要】 基于某油田开采的油气进站压力高的特性,利用主流的膨胀深冷分离法,以降低工艺生产能耗、系统总经济效益最佳为目标,在保障产品质量和回收率的前提下,对该油气加工处理流程中的轻烃回收直接换热（DHX）工艺进行优化。结果表明,与原DXH工艺相比,虽然优化工艺C₃⁺回收率降低了3%,但运行成本降低58.7%,总经济效益增加了3 118元/h,并且系统无CO₂结冰风险,工艺运行安全可靠。研究结果可为油田轻烃回收工艺的设计和生产实践提供理论依据和参考价值。更多还原

【Abstract】 For the characters of one oil field that the inlet pressure of oil and gas is high,the turboexpander process is used as optimization for direct heat exchange（DHX）process in the aspect of light hydrocarbon separation and recycling based on the principle of aiming to lower production energy cost and achieve economic benefits on the premise of ensuring product quality and recovery.The simulation results reveal that although the recovery of C₃⁺ decreases from 97% to 94%,but the operation cost is cut down by 58.7%.Besides the overall economic benefits increases obviously compared with DHX process and there is no risk of CO₂ freezing in the whole process which means that the new process is safe and reliable.The research results can provide technical reference for the design and actual operation of light hydrocarbon recovery process in oil fields.更多还原