Oil filter and dehydrator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 12, 2002
Grant Date -
May 30, 2002
app pub date -
Nov 30, 2000
filing date -
Nov 30, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A combination filter/dehydrator is disclosed which first filters a stream of oil or fluid of low volatility to remove particulate contaminants, and then passes the stream through a dehydrator 38 to remove free, emulsified, or dissolved entrained water. A pressure control valve 46 is provided to enable a portion of the oil stream to bypass the dehydrator in order to maintain a predetermined pressure differential across the dehydrator membrane. A discharge chamber (FIG. 5) is provided at an outlet of the dehydrator to prevent the loss of oil that has permeated the dehydrator membrane. A sweep gas stream 70 for removing water from the permeate side of the dehydrator membrane can include a coalescer 72 (FIG. 4) for removing liquids entrained in the sweep gas before entering device.
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