Method for producing a selectively permeable separation module

Patent · Tue Mar 14 00:00:00 EST 2000

OSTI ID:872903

Stone, Mark L ^[1]; Orme, Christopher J ^[2]; Peterson, Eric S ^[1]

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1. Idaho Falls, ID
2. Shelley, ID

A method and apparatus is provided for casting a polymeric membrane on the inside surface of porous tubes to provide a permeate filter system capable of withstanding hostile operating conditions and having excellent selectivity capabilities. Any polymer in solution, by either solvent means or melt processing means, is capable of being used in the present invention to form a thin polymer membrane having uniform thickness on the inside surface of a porous tube. Multiple tubes configured as a tubular module can also be coated with the polymer solution. By positioning the longitudinal axis of the tubes in a substantially horizontal position and rotating the tube about the longitudinal axis, the polymer solution coats the inside surface of the porous tubes without substantially infiltrating the pores of the porous tubes, thereby providing a permeate filter system having enhanced separation capabilities.

• Research Organization: Idaho National Laboratory (INL), Idaho Falls, ID (United States)
• DOE Contract Number: AC07-94ID13223
• Assignee: Bechtel BWXT Idaho LLC (Idaho Falls, ID)
• Patent Number(s): US 6036030
• Application Number: 08/965654
• OSTI ID: 872903
• Country of Publication: United States
• Language: English

Related Subjects

method
producing
selectively
permeable
separation
module
apparatus
provided
casting
polymeric
membrane
inside
surface
porous
tubes
provide
permeate
filter
capable
withstanding
hostile
operating
conditions
excellent
selectivity
capabilities
polymer
solution
solvent
means
melt
processing
form
uniform
thickness
tube
multiple
configured
tubular
coated
positioning
longitudinal
axis
substantially
horizontal
position
rotating
coats
infiltrating
pores
providing
enhanced
substantially horizontal
porous tubes
uniform thickness
inside surface
operating conditions
longitudinal axis
horizontal position
porous tube
operating condition
polymer solution
selectively permeable
processing means
polymer membrane
melt processing
polymeric membrane
/210/264/427/