Gas recovery system
AssigneeKohlensaure-Werke Rud. Buse GmbH & Co.
InventorsKarl Frank, Ewald Marnette
Life of this patent
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Abstract
A method and apparatus for recovering the gases which are produced when a storage tank is operating abnormally, e.g., gases which are directly discharged through a safety valve during periods of overpressure, or else gases generated from liquids leakage outwardly therefrom, the escaping gases being cooled and liquified by heat exchange with a liquified low-boiling coolant gas, the liquified escaping gases then being passed to a collector which can have greatly reduced dimensions compared to conventional collectors.
Claims13
A method of recovering the gases originating from a storage tank during abnormal operation thereof, the method comprising
- passing the escaping gases to a heat exchanger where they are cooled and liquified by heat exchange with a liquified, low-boiling coolant gas selected from the group consisting of CO.sub.2, nitrogen and Freon, and
- conveying the liquified escaping gases from the heat exchanger through a line to a collector tank where they can be stored.
An apparatus for recovering the gases which originate from a storage tank during abnormal operation thereof and which are conveyed away therefrom through a safety outlet line, said apparatus including
- a heat exchanger, said safety outlet line being connected to said heat exchanger to deliver the escaping gases therewithin,
- a means for containing a liquified low-boiling coolant gas,
- means for conveying said liquified low-boiling coolant gas from said containing means to said heat-exchanger to cool and liquify said escaping gases therein,
- a separate collecting tank,
- means for conveying the liquified escaping gases from said heat exchanger to said separate collecting tank,
- an expansion chamber, and
- means to convey liquified gases from said collecting tank to said expansion chamber.
Dependencies are inferred from the claim text.