Title:
OBSTRUCTION REMOVAL METHOD
Document Type and Number:
WIPO Patent Application WO/2020/217505
Kind Code:
A1
Abstract:
Provided is an obstruction removal method that is a method to remove obstructions from a supercritical water reaction device comprising a heat exchanger having an inner tube by which a liquid to be processed is introduced and an outer tube by which a heat medium is introduced. The obstruction removal method includes an insertion step of inserting a flexible tube from an opening provided in the inner tube until contact is made with the obstruction in the inner tube, an injection step of sending a surfactant to the obstruction via the flexible tube, an extraction step of removing the flexible tube to the outside of the inner tube after the injection step, and a pressurization step of applying pressure to the obstruction by feeding gas to the inner tube after the extraction step.
Inventors:
WADA YASUTAKA (JP)
TANIGAWA HIROAKI (JP)
MATSUMURA YUKIHIKO (JP)
NOGUCHI TAKASHI (JP)
TANIGAWA HIROAKI (JP)
MATSUMURA YUKIHIKO (JP)
NOGUCHI TAKASHI (JP)
Application Number:
PCT/JP2019/018102
Publication Date:
October 29, 2020
Filing Date:
April 26, 2019
Export Citation:
Assignee:
CHUGOKU ELECTRIC POWER (JP)
UNIV HIROSHIMA (JP)
TOYO KOATSU CO LTD (JP)
UNIV HIROSHIMA (JP)
TOYO KOATSU CO LTD (JP)
International Classes:
B01J3/00; B08B9/032; F28G9/00
Domestic Patent References:
| WO2018055705A1 | 2018-03-29 |
Foreign References:
| JP2004148191A | 2004-05-27 | |||
| JP2003181272A | 2003-07-02 | |||
| JPH09113184A | 1997-05-02 | |||
| JP2016191527A | 2016-11-10 | |||
| US20170016687A1 | 2017-01-19 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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