文档介绍：SECTION 16
Hydrocarbon Recovery
Gas processing covers a broad range of operations to prepare technologies, recoveries of liquids can be significantly increased
natural gas for market. Processes for removal of contaminants to achieve deep ethane recoveries. Early ethane recovery facili-
such as H2S, CO2 and water are covered extensively in other ties targeted about 50 % ethane recovery. As processes developed,
sections of the Data Book. This chapter will cover the proc- ethane recovery efficiencies have increased to well over 90%.
esses involved in recovering light hydrocarbon liquids for sale.
In some instances heavy hydrocarbons are removed to control
The ponents included in the processes de-
the hydrocarbon dew point of the gas and prevent liquid from
scribed are covered in other sections of the Data Book. This
condensing in pipeline transmission and fuel systems. In this
section will bring ponents together in process con-
case the liquids are a byproduct of the processing and if no market
figurations used for liquid production.
exists for the liquids, they may be used as fuel. Alternatively, the
liquids may be stabilized and marketed as condensate.
INTRODUCTION
The recovery of light hydrocarbon liquids from natural gas POSITION
streams can range from simple dew point control to deep eth-
ane extraction. The desired degree of liquid recovery has a The position has a major impact on the economics
profound effect on process selection, complexity, and cost of the of NGL recovery and the process selection. In general, gas with
processing facility. a greater quantity of liquefiable hydrocarbons produces a
greater quantity of products and hence greater revenues for
The term NGL (natural gas liquids ) is a general term which the gas processing facility. Richer gas also entails larger re-
applies to liquids recovered from natural gas and as such re- frigeration duties, larger heat exchange surfaces and higher
fers to ethane and heavie