Title:
METHOD AND APPARATUS FOR PRODUCING USEFUL SUBSTANCE
Document Type and Number:
WIPO Patent Application WO/2023/063287
Kind Code:
A1
Abstract:
A method according to the present invention for producing a useful substance by treating wood chips, which is a raw material, to produce at least two useful substances is characterized by comprising: a device preparation step for preparing a treatment device provided with an airtight container, a supply part, a steam jetting means, a discharge port part having an opening/closing valve and an opening/closing mechanism, and a steam discharge port having a steam discharge valve; a raw material introduction step for introducing a raw material containing wood chips as a main raw material from the supply part into a treatment space of the airtight container of the treatment device; a first subcritical water treatment step for introducing steam having a temperature of 120-200 °C and a pressure of 4-15 atm into the treatment space into which the raw material has been introduced while stirring the raw material and performing a subcritical water reaction treatment on the raw material to obtain a first mixed solution containing fulvic acid, humic acid, and solid matter of chips and/or fragments of wood; an intermediate pressure lowering step for opening the steam discharge valve and discharging high-pressure steam from the treatment space to lower the pressure in the treatment space from a high pressure; a liquid recovery step for opening the opening/closing valve to recover only a liquid serving as a raw material for fulvic acid/humic acid from the treatment space; a closing step for closing the steam discharge valve and the opening/closing valve; a second subcritical water treatment step for introducing a steam having a temperature of 200-250 °C and a pressure of 15-30 atm into the treatment space in which the solid matter is present while stirring the raw material to obtain a carbonized solid matter formed by carbonizing the raw material by means of a subcritical water reaction and a second mixed solution containing a wood vinegar generated according to the carbonization; a final pressure lowering step for opening the steam discharge valve and discharging high-pressure steam from the treatment space to lower the pressure in the treatment space from high pressure to atmospheric pressure; a liquid recovery step for opening the opening/closing valve to recover only the liquid to be a raw material for wood vinegar from the treatment space; and a solid recovery step for opening the opening/closing mechanism to recover the solid carbide from the treatment space.
Inventors:
MATSUI SABURO (JP)
Application Number:
PCT/JP2022/037773
Publication Date:
April 20, 2023
Filing Date:
October 11, 2022
Export Citation:
Assignee:
G 8 INT TRADING CO LTD (JP)
International Classes:
C10C5/00; C10B53/02
Domestic Patent References:
| WO2019043961A1 | 2019-03-07 |
Foreign References:
| JP2001192670A | 2001-07-17 | |||
| JPS57111380A | 1982-07-10 | |||
| JP2020537623A | 2020-12-24 | |||
| JP2012228683A | 2012-11-22 | |||
| JP2003047409A | 2003-02-18 | |||
| JP2018111055A | 2018-07-19 | |||
| JP2021066801A | 2021-04-30 |
Attorney, Agent or Firm:
NAKAZATO Kouichi et al. (JP)
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