首页>
外国专利>
NITROGEN REMOVAL WITH ISO-PRESSURE OPEN REFRIGERATION NATURAL GAS LIQUIDS RECOVERY.
NITROGEN REMOVAL WITH ISO-PRESSURE OPEN REFRIGERATION NATURAL GAS LIQUIDS RECOVERY.
展开▼
机译:等压开放式制冷天然气液回收可去除氮。
展开▼
页面导航
摘要
著录项
相似文献
摘要
A process for recovery of natural gas liquids is disclosed, the process including: fractionating a gas stream comprising nitrogen, methane, ethane, and propane and other C3+ hydrocarbons into at least two fractions including a light fraction comprising nitrogen, methane, ethane, and propane, and a heavy fraction comprising propane and other C3+ hydrocarbons; separating the light fraction into at least two fractions including a nitrogen-enriched fraction and a nitrogen-depleted fraction in a first separator; separating the nitrogen-depleted fraction into a propane-enriched fraction and a propane-depleted fraction in a second separator; feeding at least a portion of the propane-enriched fraction to the fractionating as a reflux; recycling at least a portion of the propane-depleted fraction to the first separator. In some embodiments, the nitrogen-enriched fraction may be separated in a nitrogen removal unit to produce a nitrogen-depleted natural gas stream and a nitrogen-enriched natura l gas stream.
展开▼