SUBCRITICAL WATER TREATMENT METHOD AND DEVICE

Title:

SUBCRITICAL WATER TREATMENT METHOD AND DEVICE

Document Type and Number:

WIPO Patent Application WO/2016/013535

Kind Code:

A1

Abstract:

Provided is a subcritical water treatment method in which organic waste and sludge are decomposed in a large-sized pressure vessel using a low amount of energy consumption. In this subcritical water treatment method: high-temperature, high-pressure steam is supplied into a pressure vessel; an object to be treated in the pressure vessel, said object comprising organic waste or sludge, is stirred while being heated and pressurized; a sudden increase in the temperature and/or pressure inside the pressure vessel is detected with the temperature inside the pressure vessel at 150 °C or above; after this detection, the amount of supplied steam is adjusted such that the temperature inside the pressure vessel is maintained for 5-10 minutes at or above the temperature at the time when the sudden increase started; and subsequently, the supply of steam is stopped.

Inventors:

SUZUKI TOSHIKATSU (JP)

Application Number:

PCT/JP2015/070643

Publication Date:

January 28, 2016

Filing Date:

July 21, 2015

Export Citation:

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Assignee:

PCS CO LTD (JP)

International Classes:

B01J3/00; B01J3/02; B01J3/04; B09B3/00; C02F11/08; G21F9/30

Foreign References:

JP2011194301A	2011-10-06
JP2008093831A	2008-04-24
JP2013144290A	2013-07-25
JP2009119378A	2009-06-04
JP2011230059A	2011-11-17
JP2011056330A	2011-03-24