Closed loop gas dehydration process and apparatus

Patent · Tue Oct 09 04:00:00 EDT 1990

OSTI ID:5913676

Taylor, J A

This patent describes a method of drying a wet stream of gas. It comprises: the steps of: osmotically imbibing water from a wet gas stream flowing on one side of at least one hollow fiber membrane and forming a dried retentate stream, diffusing a water permeate to a second side of the hollow fiber membrane while preventing imbibing and diffusion of hydrocarbons and halogenated hydrocarbons therethrough; forming a sweep stream and removing the water permeate from the second side of the hollow fiber membrane therewith; and removing the dried retentate stream containing hydrocarbons and halogenated hydrocarbons therein. The method is characterized by recirculating a portion of the dried retentate stream as the sweep stream in a closed fluid flow circuit.

• Assignee: Separation Dynamics, Inc., Southfield, MI (USA)
• Patent Number(s): A; US 4961759
• Application Number: PPN: US s 7-394954
• OSTI ID: 5913676
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
03 NATURAL GAS
033000 -- Natural Gas-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
DEHYDRATION
DIFFUSION
FLUID FLOW
FLUIDS
GASES
HYDROCARBONS
MEMBRANES
MOISTURE
ORGANIC COMPOUNDS
SEPARATION PROCESSES