Title:
リグノセルロース材をパルプ化するための方法および装置。
Document Type and Number:
Japanese Patent JP5491687
Kind Code:
B2
Abstract:
A non-compression vessel, such as a digester, is employed for the chemical preconditioning of the chips followed by a fiberizing device to break the preconditioned chips down to fiber bundles, which are then washed before a high consistency chemical treatment. The digester may be one such as used in conventional chemical pulping of wood with or without screens for the extraction of chemical. If extracted this chemical could be recirculated to the digester with treatment in the circulation loop such as heating or the addition of dilution or other chemicals. This digester may be hydraulic or vapor phase (that is contain a vapor space within the digester), and operate in either a continuous or batch fashion. This digester allows for the discharge of material without the use of a screw mechanism. The digester treated material is then defiberized to convert the chips into course fiber bundles, which then is washed and dewatered. The washed and dewatered pulp is then treated with alkali peroxide chemicals to develop brightness and other pulp properties.
Inventors:
Johann Eitinger
Eric Shoe
Marc Jay Savoline
Eric Shoe
Marc Jay Savoline
Application Number:
JP2007206761A
Publication Date:
May 14, 2014
Filing Date:
August 08, 2007
Export Citation:
Assignee:
Andritz Incorporated
International Classes:
D21C3/22; D21C9/16; D21H11/08
Domestic Patent References:
| JP47016841B1 | ||||
| JP56169890A | ||||
| JP63099388A |
Foreign References:
| US20040118529 |
Attorney, Agent or Firm:
Shizuo Nakamura