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Title:
OBSTRUCTION REMOVAL METHOD
Document Type and Number:
WIPO Patent Application WO/2020/217507
Kind Code:
A1
Abstract:
Provided is an obstruction removal method that is a method for a supercritical water reaction device comprising: a heat exchanger that has an inner tube by which a liquid being processed is introduced and an outer tube by which a heat medium is introduced; a reactor that decomposes, by using supercritical water, the liquid being processed that has passed through the heat exchanger; a blowdown valve that is disposed on the side opposite to the reactor with respect to the heat exchanger; a flow restriction device that is disposed on the side of the heat exchanger or the side opposite to the heat exchanger with respect to the blowdown valve. The obstruction removal method includes a backflow step and a blowdown step. In the backflow step, water is supplied from the reactor side to the inner pipe and the internal pressure of the inner pipe is set to 7 MPa or greater. In the blowdown step, after the backflow step, the inner pipe water is discharged through the blowdown valve.

Inventors:
WADA YASUTAKA (JP)
TANIGAWA HIROAKI (JP)
UCHIYAMA ICHIRO (JP)
TANIGUCHI NAOHIKO (JP)
MATSUMURA YUKIHIKO (JP)
NOGUCHI TAKASHI (JP)
Application Number:
PCT/JP2019/018104
Publication Date:
October 29, 2020
Filing Date:
April 26, 2019
Export Citation:
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Assignee:
CHUGOKU ELECTRIC POWER (JP)
UNIV HIROSHIMA (JP)
TOYO KOATSU CO LTD (JP)
International Classes:
B01J3/00; B08B9/032; F28G9/00
Foreign References:
JP2014189588A2014-10-06
JP2002224690A2002-08-13
JPH11504254A1999-04-20
JP2009279573A2009-12-03
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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