HYSYS计算出来的天然气的水合物形成温度竟然高于露点温 ...？ 一些解决方式（来源: http:///dehydration ... bo-expander_process ） 1. 把含水量降到很低。(用teg除水，或teg除水+分子筛除水。) 'the gas entering the turbo-expander process must be dehydrated upstream of the plant to a very low water content so that no hydrates form when the low temperatures are reached by the gas being processed. this usually requires a glycol dehydration unit for removing most of the water, followed by a molecular sieve unit to remove virtually all of the water from the feed gas.' 2. 加水合物抑制剂如甲醇。 'expander processes for ngl recovery can chill the gas as low as –160°f. to dry the gas to this low a water dewpoint temperature requires the use of molecular sieves in drying towers. a common class of molecular sieve used for deep drying has a pore opening of 4 Å. instead of drying the gas with molecular sieves, it is also possible to prevent potential freezing problems with the addition of minor amounts of methanol into the gas stream upstream of the chilling section.' 希望对你有帮助。 查看更多
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