Spiral wound element for separation
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United States of America Patent
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-
Jan 4, 1994
Grant Date -
N/A
app pub date -
Jul 29, 1992
filing date -
Jul 29, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An improved spiral wound element for separations is disclosed wherein the improvement comprises using as the feed/retentate space one or more layers of a material having an open cross-sectional area in the range 30 to 70% and as the permeate spacer material at least three layers of material two of which are fine and have an open cross-sectional area of about 10 to 50% surrounding a coarse layer having an open cross-sectional area of about 50 to 90%.
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