Natural Gas Dehydration by Membranes

摘要

Several vendors are or have been developing membrane technology for tural gas dehydration. One of these vendors, Permea (a Division of Air )roducts and Chemicals, Inc.), succeeded in this task by developing a hollow 'iber module with a counter current sweep (1). Shell has been participating n this development program together with various other oil companies by esting prototype membrane modules. For these tests the Gas Membrane nodule Test Unit (GMTU) from Shell Global Solutions, located at the Shell ~esearch and Technology Centre Amsterdam, has been used. This test acility can be used to test membranes on natural gas at different feed )ressures (25-70 bar), permeate pressures (0.1-8 bara) and temperatures (30- ro°c). The performance in raw natural gas can be simulated by injecting vater (or a hydrocarbon mixture). A schematic flow scheme of the test facility s presented in Figure 1.