| 摘要 |
A system and apparatus for condensing and recovering vapors of low volatile liquids such as hydrocarbons utilizes, a cascade cooling arrangement for providing and maintaining a cooling fluid such as methylene chloride at temperatures in a range from -70 DEG F to -110 DEG F which cooling fluid is held in a storage and circulating system; for circulating and recirculating the cooling fluid in heat exchange relationship with the cascade cooling arrangement to maintain the cooling fluid at the desired relatively low temperatures and for passing the cooling fluid through finned sections of a vapor condenser to condense the vapors of the low volatile liquids passed through said vapor condenser; said vapor condenser being operatively associated with a defroster for defrosting the vapor condenser, at regular intervals as required for efficient operation of the system, and a decanter for separating the condensate and water delivered thereto from the system and for removing condensate from the system.
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