Fluent material handling – with receiver or receiver coacting mea – Processes – Gas or variation of gaseous condition in receiver
Patent
1994-04-01
1996-01-16
Jacyna, J. Casimer
Fluent material handling, with receiver or receiver coacting mea
Processes
Gas or variation of gaseous condition in receiver
141 5, 141 45, 141 59, 141 52, B67D 5378
Patent
active
054840007
ABSTRACT:
A vacuum assisted vapor recovery system and method using a processing unit to process excess vapors collected during vehicle refueling with a bellowless nozzle. The system and method can be divided into two sequences of operation. The first sequence is the collection of vapors from the automobile during refueling. The second sequence is the return of vapors to a product storage tank with the processing of any excess vapors that would otherwise increase the pressure inside the storage tank. A single collection unit is used to collect the vapors as well as to send them to the storage tank and the processing unit. An improvement provides a recirculation loop in the collection unit to also control vapor growth in the underground storage tank. Pressure sensitive switches maintain a pressure level in the storage tank by activating the system if the pressure in the storage tank exceeds a predetermined threshold value. The processing unit processes any excess vapor and thus maintains the storage tank at a predetermined pressure level. The processing unit may be a combustion unit that incinerates the vapor.
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