Vapor recovery system with automatic valve control
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United States of America Patent
Stats
-
Jan 7, 1997
Grant Date -
N/A
app pub date -
Jul 12, 1995
filing date -
Jul 12, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vapor recovery apparatus is provided with an automatic flow control system. The apparatus includes first and second reaction vessels. Each reaction vessel holds a bed of adsorbent for adsorbing volatile liquid vapor and producing relatively volatile liquid vapor-free air. A vacuum pump is provided for regenerating the beds of adsorbent. A cooler and/or absorber tower is provided to recover volatile liquid vapor generated during bed regeneration. Conduits are provided for the passage of air-volatile liquid vapor mixture between the various components of the apparatus. A series of valves direct the flow of the air-volatile liquid vapor mixture through the conduits. The automatic flow control system includes a vacuum transmitter for monitoring air pressure within the apparatus at a selected point and a controller responsive to the sensed pressure for controlling the operation of the valves.
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