WO2005042838B1 - Bleached and unbleached fibrous paper pulps and a method for producing the same - Google Patents

Bleached and unbleached fibrous paper pulps and a method for producing the same

Info

Publication number
WO2005042838B1
WO2005042838B1 PCT/PL2004/000088 PL2004000088W WO2005042838B1 WO 2005042838 B1 WO2005042838 B1 WO 2005042838B1 PL 2004000088 W PL2004000088 W PL 2004000088W WO 2005042838 B1 WO2005042838 B1 WO 2005042838B1
Authority
WO
WIPO (PCT)
Prior art keywords
stems
washing
pulp
bleached
chemithermomechanical
Prior art date
Application number
PCT/PL2004/000088
Other languages
French (fr)
Other versions
WO2005042838A1 (en
Inventor
Halina Stupinska
Jaroslaw Palenik
Jadwiga Madaj
Slawomir Milczarek
Original Assignee
Biotek Sp Z O O
Halina Stupinska
Jaroslaw Palenik
Jadwiga Madaj
Slawomir Milczarek
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Biotek Sp Z O O, Halina Stupinska, Jaroslaw Palenik, Jadwiga Madaj, Slawomir Milczarek filed Critical Biotek Sp Z O O
Priority to EP04793748A priority Critical patent/EP1694913A1/en
Publication of WO2005042838A1 publication Critical patent/WO2005042838A1/en
Publication of WO2005042838B1 publication Critical patent/WO2005042838B1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

Highly efficient fibrous paper pulps are produced according to the invention from stems of the plant Sida hermaphrodita Rusby, which is characterised by the absence of resinous substances, lignin contents lower than in the wood, and a high proportion of long phloem fibres. Gaining and preparing a raw material for a technological process is waste-free, low energy-consuming and labour-consuming. Methods for producing pulps according to the invention in a chemothermomechanical process are friendly to the environment, and in particular they are suitable for using in little and mediate enterprises. Products resulting from using the invention have useful properties which are required in manufacturing various types of paper of common usage, are easier processed with papermaking machines than pulps from the wood, because they do not give rise to formation of precipitations of resin acid compounds. Technological waste water can be used to soil fertilization.

Claims

AMENDED CLAIMS [Received by the International Bureau on 26 April 2005 (26.04.2005): original claims 1-18 replaced by amended claims 1-12] Amended claims under Art. 19 of EGT
1. Unbleached or bleached chemithermomechanical paper pulps, characterised in that they are produced from stems of the perennial plant Sida hermaphrodi ta Rusby.
2. A method for producing unbleached or bleached chemithermomechanical paper pulps from a biomass by using, at an impregnation stage, sodium sulfite and sodium hydroxide solutions or hydrogen peroxide and sodium hydroxide solutions at elevated temperature with mechanically defibering, characterised in that the chemithermomechanical pulps are produced from stems of the perennial plant Sida hermaphrodi ta Rusby.
3. The method as claimed in claim 2, characterised in that the crop of ripe stems of the plant Sida hermaphrodi ta Rusby is performed with agricultural machines, preferably self-propelled chaff cutters which disintegrate stems into segments of 10 to 40 mm, in particular 15-30 mm in length.
4. The method as claimed in one of claims 2 and 3, characterised in that a part of the harvested and disintegrated stems is directed directly to the processing, and an excess of the stems in disintegrated form are stored in the storage yards without preservatives and protective additives against fermentation processes.
5. The method as claimed in one of claims 2, 3 and 4 characterised in that the disintegrated stems are directed to the chemithermomechanical process, in which they are impregnated with a sodium sulfite solution and sodium hydroxide solution at a temperature from 100° to 130°C, preferably at a temperature 110°C, for 5-30 minutes, followed by defibering with inter-stage washing, and classification.
6. The method as claimed in one of claims 2, 3 and 4, characterised in that the disintegrated stems are directed to the technological chemithermomechanical process, in which they are impregnated with a solution of hydrogen peroxide and sodium hydroxide at a temperature from 100° to 130°C, preferably at a temperature 110°C, for 5-30 minutes, followed by defibering with an inter-stage washing, and classification.
7. The method as claimed in claim 5 or 6, characterised in that the pulp resulting from the chemithermomechanical process is bleached with hydrogen peroxide in a basic medium of sodium hydroxide at a concentration 15-32%, preferably at a concentration 30%, followed by washing with hot water.
8. The method as claimed in one of claims 5, 6 and 7, characterised in that the hot water or effluent from washing the pulp after bleaching is used for washing the unbleached pulp.
17
9. The method as claimed in claim 7, characterised, in that the hot water, preferably of a temperature 80°C, is used for washing the bleached pulp.
10. The method as claimed in claim 9, characterised in that the washed bleached pulp is acidified to pH 3, followed by washing with cold water.
11. The method as claimed in claim 10, characterised in that the effluent from washing the pulp after acidification is used to neutralize waste water from washing the pulp before bleaching.
12. The method as claimed in claim 11, characterised in that the neutralized process waste water is fed ±nto a waste water treatment plant or used to soil fertilization.
18
PCT/PL2004/000088 2003-10-30 2004-10-27 Bleached and unbleached fibrous paper pulps and a method for producing the same WO2005042838A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04793748A EP1694913A1 (en) 2003-10-30 2004-10-27 Bleached and unbleached fibrous paper pulps and a method for producing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL03363211A PL363211A1 (en) 2003-10-30 2003-10-30 Non-bleached and bleached fibrous paper pulps and method for manufacturing non-bleached and bleached fibrous paper pulps
PLP363211 2003-10-30

Publications (2)

Publication Number Publication Date
WO2005042838A1 WO2005042838A1 (en) 2005-05-12
WO2005042838B1 true WO2005042838B1 (en) 2005-06-23

Family

ID=34545978

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL2004/000088 WO2005042838A1 (en) 2003-10-30 2004-10-27 Bleached and unbleached fibrous paper pulps and a method for producing the same

Country Status (3)

Country Link
EP (1) EP1694913A1 (en)
PL (1) PL363211A1 (en)
WO (1) WO2005042838A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101613968B (en) * 2008-06-23 2011-06-22 李朝旺 Method for eliminating pollution of closed papermaking factory

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE562041A (en) * 1956-11-08
JPS5622991B2 (en) * 1973-05-01 1981-05-28
US5002635A (en) * 1985-09-20 1991-03-26 Scott Paper Company Method for producing pulp using pre-treatment with stabilizers and refining
DE69317781T2 (en) * 1992-07-27 1998-07-30 Procter & Gamble LAMINATED DOUBLE TEXTURED TREATMENT PADS
DE19603491C2 (en) * 1996-01-31 1999-04-08 Abu Shaar Isam Process for the production of a fibrous cellulose fabric and its use
AU2661799A (en) * 1998-02-11 1999-08-30 North Carolina State University Method for the simple and environmentally benign pulping of nonwood fibrous materials
DE69912128T2 (en) * 1998-04-17 2004-06-17 Alberta Research Council, Inc., Edmonton METHOD FOR PRODUCING LIGNOCELLULOSE-CONTAINING PULP FROM NON-WOODY MATERIAL
DK172928B1 (en) * 1998-05-01 1999-10-04 Landbrugets Radgvningcenter Process for making single fiber mats, fiber mats and using such a fiber mat.
PL198570B1 (en) * 2001-05-31 2008-06-30 Biotek Sp Z Oo Agglomerated materials obtained from biomass and method of obtaining such materials
PL348549A1 (en) * 2001-07-06 2003-01-13 Biotek Sp Z Oo Bleached and non-bleached chemical paper pulps and method of their manufacture from biomass

Also Published As

Publication number Publication date
WO2005042838A1 (en) 2005-05-12
PL363211A1 (en) 2005-05-02
EP1694913A1 (en) 2006-08-30

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