METHOD FOR RECOVERING RESIDUAL GAS

Title:

METHOD FOR RECOVERING RESIDUAL GAS

Document Type and Number:

Japanese Patent JP2001330198

Kind Code:

A

Abstract:

To heighten thermal efficiency in producing purge gas from liquefied purge gas and liquefy and recover residual gas at a low equipment cost.

A storage tank 2 is charged with purge gas 1 produced by gasifying liquefied purge gas 5 of lower temperature than the liquefied temperature of a storage fluid, by a heat exchanger 11 when the storage fluid liquefied and stored in the storage tank 2 is discharged from the storage tank 2. Residual gas 3 remaining inside the storage tank 2 due to the gasification of a part of the storage fluid is ejected from the storage tank 2 by the purge gas 1. The residual gas 3 immediately after ejected from the storage tank 2 is brought into direct contact with the liquefied purge gas 5 and heat-exchanged by the heat exchanger 11 so as to be liquefied and recovered as liquefied gas.

Inventors:

KAMIYA ATSUSHI
NEMOTO MAKOTO
ENUMA KAZUYUKI
KAKEHI KATSUYUKI

Application Number:

JP2000148761A

Publication Date:

November 30, 2001

Filing Date:

May 19, 2000

Export Citation:

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Assignee:

TOKYO GAS CO LTD
KAWAJU INSPECTION SERVICE CO L

International Classes:

F17C9/00; B01D5/00; F25J1/00; (IPC1-7): F17C9/00; B01D5/00; F25J1/00

Attorney, Agent or Firm:

Yoshio Sano

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