Negative pressure vapor recovery system
AssigneeJordan Technologies, Inc.
InventorsMark A. Jordan, Alexander K. Daub, Arthur L. Boroff
Life of this patent
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Abstract
A vapor recovery system includes a product handling circuit and a control circuit. The control circuit maintains a negative pressure in the product handling circuit in order to prevent undesirable fugitive vapor emissions.
Claims20
A vapor recovery system for recovering volatile liquid vapor produced when loading a volatile liquid product into a storage tank from a supply tank, said vapor recovery system comprising:
- a product handling circuit including a supply tank, a storage tank and a reaction vessel holding a bed of adsorbent;
- and
- a control circuit including a controller that maintains a negative pressure in said product handling circuit in order to prevent undesirable fugitive vapor emissions during a first mode of operation when said volatile liquid product is being loaded into said storage tank from said supply tank and said volatile liquid vapor being produced is captured by said bed of adsorbent.
A method of preventing fugitive volatile liquid vapor emissions from a vapor recovery system incorporating a product handling circuit including a reaction vessel holding a bed of adsorbent for capturing volatile liquid vapors produced when loading volatile liquid product into a storage tank from a supply tank, said method comprising:
- operating the product handling circuit as a closed loop between said reaction vessel, said supply tank and said storage tank during loading of said volatile liquid product into said storage tank;
- and
- maintaining a negative pressure in said closed loop during loading of said volatile liquid product into said storage tank and capturing of said volatile liquid vapor by said bed of adsorbent.
Dependencies are inferred from the claim text.