Title:
METHOD FOR PRODUCING PULP FIBRES FOR SACCHARIFICATION, AND AQUEOUS SOLUTION OF PULP FIBRES FOR SACCHARIFICATION
Document Type and Number:
WIPO Patent Application WO/2019/003656
Kind Code:
A1
Abstract:
The purpose of the present disclosure is to provide a method for producing pulp fibres for saccharification from the pulp fibres of used sanitary items, said pulp fibres for saccharification having low lignin contents distributed within a narrow range, and enabling the production of pulp fibres for saccharification having superior saccharification properties. The production method according to the present disclosure is characterised by comprising the following: a step for supplying a mixed solution (51) containing pulp fibres and highly-absorbent polymers sourced from used sanitary items to a treatment tank (31) via a mixed-solution supply port (32); a step for supplying an ozone-containing gas (53) to a treatment solution (52) within the treatment tank (31) via an ozone-containing-gas supply port (43); a step for lifting the ozone-containing gas (53) whilst lowering the pulp fibres and highly-absorbent polymers within the treatment tank (31), thereby bringing the ozone-containing gas (53) into contact with the pulp fibres and highly-absorbent polymers, and forming pulp fibres for saccharification from the pulp fibres; and a step for discharging the treatment solution (52) via a treatment-solution discharge port (33). The method is further characterised in that the pulp fibres for saccharification have lignin contents of 0.1% or less.
Inventors:
YAMAKI KOUICHI (JP)
KONISHI TAKAYOSHI (JP)
OHASHI NAOTO (JP)
HIRAOKA TOSHIO (JP)
KURITA NORITOMO (JP)
KONISHI TAKAYOSHI (JP)
OHASHI NAOTO (JP)
HIRAOKA TOSHIO (JP)
KURITA NORITOMO (JP)
Application Number:
PCT/JP2018/018179
Publication Date:
January 03, 2019
Filing Date:
May 10, 2018
Export Citation:
Assignee:
UNICHARM CORP (JP)
International Classes:
B09B3/00; D21C5/02; C08J11/16
Domestic Patent References:
| WO2015190140A1 | 2015-12-17 |
Foreign References:
| JP2013202021A | 2013-10-07 | |||
| JP2006087319A | 2006-04-06 | |||
| JP2016214218A | 2016-12-22 | |||
| JP2013202021A | 2013-10-07 | |||
| JP2006141244A | 2006-06-08 | |||
| JP2009183211A | 2009-08-20 | |||
| JP2010017084A | 2010-01-28 | |||
| JP2010036058A | 2010-02-18 |
Other References:
"Soil diagnosis guidance", AGRICULTURE, FORESTRY AND FISHERIES DEPARTMENT, pages: 85 - 87
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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