Patent ID: 11946005
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  Y | IPC C

Claim 5:
6. A gasification gas treatment method for treating a gasification gas obtained by gasification of a fuel, comprising:
in a cleaning facility, producing a purified gas by making the gasification gas come into contact with scrubbing water;
in a first heat exchanger, a first heat exchange step of performing heat exchange between the purified gas and steam;
in a second heat exchanger, a second heat exchange step of performing heat exchange between the gasification gas and at least condensed water produced by the heat exchange in the first heat exchange step;
a circulation step of supplying a circulating fluid including at least the condensed water or the steam between the first heat exchanger and the second heat exchanger;
producing steam by a first steam system;
supplying the produced steam to the circulation system from the first steam system;
extracting the steam from the circulation system with a steam extraction system;
measuring a pressure of the circulation system with a pressure gauge; and
adjusting a flow rate of the steam flowing through the steam extraction system, with a flow rate adjustment valve disposed in the steam extraction system, based on the pressure measured by the pressure gauge,
wherein the condensed water from the circulation step is stored in an interior space of the second heat exchanger.