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靠降低工艺过程的温度来获得较高的天然气液体收率,会导致冷冻工艺更复杂和更昂贵。从天然气中回收90％或更高的丙烷和大于70％的乙烷,操作温度一般需-90℃到-100℃(-125°F到-150°F)或更低。有二种方法可以达到这么低的温度:透平膨胀致冷和混合冷剂致冷。通过用混合
Getting a higher natural gas liquid yield by lowering the temperature of the process will result in a more complicated and expensive freezing process. 90% or more of propane and greater than 70% of ethane are recovered from natural gas at operating temperatures typically -90 ° C to -100 ° C (-125 ° F to -150 ° F) or less. There are two ways to reach such a low temperature: turbine expansion refrigeration and mixed refrigerant refrigeration. By using mixing