Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through substantially solid...
Patent
1998-03-06
1999-11-16
Smith, Duane S.
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through substantially solid...
95 54, 96 7, 96 9, B01D 6300
Patent
active
059850027
ABSTRACT:
A fuel storage system is provided including at least one storage tank, an air exhaust port, a first filter assembly, a primary pump, a least one secondary pump, at least one additional filter assembly, and an additional secondary pump. The first filter assembly includes a filter input port, a fuel vapor duct, a primary filter output port, and a secondary filter output port. The filter input port is coupled to a fluid vent port. The fuel vapor duct defines a substantially unobstructed flow path extending from the filter input port to a primary filter output port. The primary filter output port is coupled to a pollutant return port. The secondary filter output port is partitioned from the fuel vapor duct by an air-permeable partition. The primary pump is positioned to cause fluid to pass from the filter input port to the primary filter output port. The secondary pump(s) is/are positioned to cause the air component within the fuel vapor duct to pass through the air-permeable partition to the secondary filter output port. The additional filter input port is coupled to the secondary filter output port. The additional secondary filter output port is coupled to the air exhaust port. The additional secondary pump is coupled to the additional filter assembly and is positioned to cause the air component within the additional fuel vapor duct to pass through an additional air-permeable partition to the exhaust port.
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Smith Duane S.
Vapor Systems Technologies, Inc.
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