DE2637449A1 - Loesungsmittelextraktionsverfahren zur herstellung von cellulosepulpe - Google Patents

Loesungsmittelextraktionsverfahren zur herstellung von cellulosepulpe

Info

Publication number
DE2637449A1
DE2637449A1 DE19762637449 DE2637449A DE2637449A1 DE 2637449 A1 DE2637449 A1 DE 2637449A1 DE 19762637449 DE19762637449 DE 19762637449 DE 2637449 A DE2637449 A DE 2637449A DE 2637449 A1 DE2637449 A1 DE 2637449A1
Authority
DE
Germany
Prior art keywords
liquor
extractor
pulp
pulping
solvent
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
DE19762637449
Other languages
German (de)
English (en)
Other versions
DE2637449C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
Wavell F Cowan
Vincent B Diebold
John K Walsh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcell Technologies Inc
Original Assignee
CP ASSOCIATES Ltd
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 CP ASSOCIATES Ltd filed Critical CP ASSOCIATES Ltd
Publication of DE2637449A1 publication Critical patent/DE2637449A1/de
Application granted granted Critical
Publication of DE2637449C2 publication Critical patent/DE2637449C2/de
Granted legal-status Critical Current

Links

Classifications

    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/20—Pulping cellulose-containing materials with organic solvents or in solvent environment

Landscapes

  • Extraction Or Liquid Replacement (AREA)
  • Paper (AREA)
  • Inorganic Fibers (AREA)
  • Artificial Filaments (AREA)
DE19762637449 1975-10-24 1976-08-20 Loesungsmittelextraktionsverfahren zur herstellung von cellulosepulpe Granted DE2637449A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA238,294A CA1079008A (en) 1975-10-24 1975-10-24 Solvent pulping process

Publications (2)

Publication Number Publication Date
DE2637449A1 true DE2637449A1 (de) 1977-05-05
DE2637449C2 DE2637449C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1988-12-15

Family

ID=4104348

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762637449 Granted DE2637449A1 (de) 1975-10-24 1976-08-20 Loesungsmittelextraktionsverfahren zur herstellung von cellulosepulpe

Country Status (9)

Country Link
US (1) US4100016A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5259702A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) AT369801B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1079008A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH617476A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2637449A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FI (1) FI65290C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NO (1) NO149115C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE428028B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2737118A1 (de) * 1977-08-17 1979-03-01 Projektierung Chem Verfahrenst Verfahren zur gewinnung von zuckern, gegebenenfalls cellulose und gegebenenfalls lignin aus lignocellulosischen pflanzlichen rohstoffen
EP0090969A1 (de) * 1982-04-06 1983-10-12 MD-Organocell Gesellschaft für Zellstoff- und Umwelttechnik mbH Verfahren und Reaktor zum kontinuierlichen Aufschliessen von Pflanzenfasermaterial
EP0432310A1 (en) * 1986-05-29 1991-06-19 Tigney Technology Inc. A method for extracting the chemical components from dissociated lignocellulosic material
DE102014221238A1 (de) * 2014-10-20 2016-04-21 Mpg Max-Planck-Gesellschaft Zur Förderung Der Wissenschaften E.V. Verfahren zur Fällung von Lignin aus Organosolv-Kochlaugen

Families Citing this family (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1079008A (en) * 1975-10-24 1980-06-10 Cp Associates Limited Solvent pulping process
CA1100266A (en) * 1977-08-31 1981-05-05 Laszlo Paszner Organosolv delignification and saccharification process for lignocellulosic plant materials
SE7802408L (sv) * 1978-03-02 1979-09-03 Gloeersen Stig Sett for att overfora med vetska transporterbara material sasom fibermaterial
IT1096315B (it) * 1978-05-24 1985-08-26 Snam Progetti Metodo per l'estrazione solido-liquido e apparecchiatura adatta allo scopo
CA1179807A (en) * 1981-03-05 1984-12-27 Bertil Fagerlund Process for digesting cellulosic material
US4470851A (en) * 1981-03-26 1984-09-11 Laszlo Paszner High efficiency organosolv saccharification process
JPS59204997A (ja) * 1983-04-28 1984-11-20 宝酒造株式会社 植物バイオマス資源の総合利用可能な処理方法
US4764596A (en) * 1985-11-05 1988-08-16 Repap Technologies Inc. Recovery of lignin
CA1267648A (en) * 1985-11-05 1990-04-10 Raphael Katzen Process for lignin recovery
US5788812A (en) * 1985-11-05 1998-08-04 Agar; Richard C. Method of recovering furfural from organic pulping liquor
AT390973B (de) * 1988-07-21 1990-07-25 Waagner Biro Ag Verfahren zur gewinnung, insbesondere aufschluss, von wertstoffen
EP0420771A1 (en) * 1989-09-27 1991-04-03 Eastman Kodak Company Isolation of lignin from solvent pulping liquors
EP0763622A3 (en) 1990-08-17 1999-08-25 Alcell Technologies Inc. Continuous solvent pulping and washing processes and apparatus
ZA92566B (en) * 1991-02-01 1993-07-28 Alcell Tech Inc Pulping of lignocellulosic materials and recovery of resultant by-products.
DE4103572C2 (de) * 1991-02-06 1995-11-23 Organocell Ges Fuer Zellstoff Verfahren zum Delignifizieren von Pflanzenfasermaterial
FI92226B (fi) * 1991-04-15 1994-06-30 Ahlstroem Oy Menetelmä jäteliemen väkevöimiseksi ja keittokemikaalien talteenottamiseksi massanvalmistuksessa alkoholipohjaisilla keittoliuoksilla
JPH08500854A (ja) * 1992-01-29 1996-01-30 アルセル・テクノロジーズ・インコーポレイテッド 繊維質植物原料のパルプ化及び生成する副生物の回収
AU7737194A (en) * 1993-10-15 1995-05-04 Macmillan Bloedel Limited Methanol recovery
DE4343508C2 (de) * 1993-12-20 1997-08-07 Eugen Edel Chemo-thermo-mechanisches Verfahren zur Herstellung von Zellstoff aus Pflanzenfasermaterial
SE503351C2 (sv) * 1994-09-06 1996-05-28 Ahlstroem Oy Förfarande för rening av sekundära kondensat vid indunstning av avlutar
CA2163389A1 (en) 1994-11-23 1996-05-24 Malcolm Cronlund Chlorine-free organosolv pulps
US5656733A (en) * 1995-06-07 1997-08-12 Hercules Incorporated Lignin-containing resinous compositions
US5665798A (en) * 1995-12-27 1997-09-09 North Pacific Paper Corporation Composite wood products from solvent extracted wood raw materials
US6364999B1 (en) 1995-12-27 2002-04-02 Weyerhaeuser Company Process for producing a wood pulp having reduced pitch content and process and reduced VOC-emissions
US5698667A (en) * 1995-12-27 1997-12-16 Weyerhaeuser Company Pretreatment of wood particulates for removal of wood extractives
US20020062935A1 (en) * 1995-12-27 2002-05-30 Weyerhaeuser Company Paper and absorbent products with reduced pitch content
BR9600672A (pt) * 1996-03-08 1997-12-30 Dedini S A Administracao E Par Processo de hidrólise ácido de material lignocelulósico e reator de hidrólise
RU2189996C2 (ru) * 1997-11-04 2002-09-27 Дедини С/А. Администрасао е Партисипасоес Способ быстрого кислотного гидролиза лигноцеллюлозного материала и гидролизный реактор
US6217711B1 (en) * 1998-02-11 2001-04-17 Andritz-Ahlstrom Oy Method of treating condensates
US6372085B1 (en) 1998-12-18 2002-04-16 Kimberly-Clark Worldwide, Inc. Recovery of fibers from a fiber processing waste sludge
CN1105802C (zh) * 1999-07-19 2003-04-16 陕西科技大学 荻苇自催化乙醇法制浆工艺
GB9920949D0 (en) 1999-09-06 1999-11-10 Ici Ltd Apparatus and method for removing solvent residues
WO2004005608A1 (en) * 2002-07-02 2004-01-15 Andritz, Inc. Solvent pulping of biomass
US20040078870A1 (en) * 2002-10-29 2004-04-29 Jones Herbert R. Cap-attachable peripheral-viewing mirrors assembly
US6923887B2 (en) * 2003-02-21 2005-08-02 Alberta Research Council Inc. Method for hydrogen peroxide bleaching of pulp using an organic solvent in the bleaching medium
US7364642B2 (en) * 2003-08-18 2008-04-29 Kimberly-Clark Worldwide, Inc. Recycling of latex-containing broke
US20070219141A1 (en) * 2003-12-08 2007-09-20 David Jones Plant Materials Extraction Method
FI122838B (fi) * 2005-03-31 2012-07-31 Metso Paper Inc Menetelmä massan valmistamiseksi lignoselluloosamateriaalista
US20090062516A1 (en) * 2006-05-08 2009-03-05 Biojoule Limited Lignin and other products isolated from plant material, methods for isolation and use, and compositions containing lignin and other plant-derived products
NZ573330A (en) * 2006-05-08 2011-11-25 Vertichem Corp Process for the production of biofuel from plant materials
US7815876B2 (en) 2006-11-03 2010-10-19 Olson David A Reactor pump for catalyzed hydrolytic splitting of cellulose
US7815741B2 (en) 2006-11-03 2010-10-19 Olson David A Reactor pump for catalyzed hydrolytic splitting of cellulose
AU2008293139A1 (en) * 2007-08-31 2009-03-05 Vertichem Corporation Lignin and other products isolated from plant material, and methods and compositions therefor
WO2012037250A2 (en) 2010-09-14 2012-03-22 Cellulose Sciences International, Inc. Nano-deaggregated cellulose
CA2720177C (en) * 2008-04-03 2014-12-16 Cellulose Sciences International, Inc. Highly disordered cellulose
US8546560B2 (en) * 2008-07-16 2013-10-01 Renmatix, Inc. Solvo-thermal hydrolysis of cellulose
EP2310418B1 (en) * 2008-07-16 2016-03-30 Renmatix, Inc. Method of extraction of furfural and glucose from biomass using one or more supercritical fluids
BRPI1012286A2 (pt) 2009-05-28 2015-09-22 Lignol Innovations Ltd derivados de lignina nativa de matérias-primas de fibras de plantas anuais
JP2011144363A (ja) * 2009-12-14 2011-07-28 Mitsubishi Chemicals Corp セルロース繊維複合体及びその製造方法
EP3719145A1 (en) 2010-01-19 2020-10-07 Renmatix, Inc. Production of fermentable sugars and lignin from biomass using supercritical fluids
WO2011097721A1 (en) 2010-02-15 2011-08-18 Lignol Innovations Ltd. Carbon fibre compositions comprising lignin derivatives
CN102959033B (zh) 2010-02-15 2016-10-12 丽格诺新创有限公司 含有木素衍生物的粘合剂组合物
WO2011097720A1 (en) * 2010-02-15 2011-08-18 Lignol Innovations Ltd Organosolv process
CA2695083A1 (en) * 2010-03-01 2011-09-01 Lignol Innovations Ltd. Multiple batch organosolv extraction system
EP2588664B1 (en) 2010-06-30 2017-01-18 Fibria Innovations Inc. Organosolv process
WO2012109651A1 (en) 2011-02-11 2012-08-16 Cellulose Sciences International, Inc. Simultaneous delignification and deaggregation of biomass
CN103459511A (zh) 2011-03-24 2013-12-18 丽格诺创新有限公司 包含木质纤维素生物质和有机溶剂的组合物
US8663800B2 (en) 2011-05-04 2014-03-04 Renmatix, Inc. Lignin production from lignocellulosic biomass
US8801859B2 (en) 2011-05-04 2014-08-12 Renmatix, Inc. Self-cleaning apparatus and method for thick slurry pressure control
US20130167603A1 (en) 2011-07-03 2013-07-04 Christopher Francis Bathurst Methods and systems for processing plants and converting cellulosic residue to crude bio-oils
US8759595B2 (en) 2011-10-12 2014-06-24 Vertichem Corporation Method of biobased chemical production from crude bioglycerin
US8759498B2 (en) 2011-12-30 2014-06-24 Renmatix, Inc. Compositions comprising lignin
US9163169B2 (en) 2012-03-13 2015-10-20 Georgia-Pacific Chemicals Llc Adhesive compositions having a reduced cure time and methods for making and using same
US9458298B2 (en) 2012-10-01 2016-10-04 Georgia-Pacific Chemicals Llc Methods for making lignocellulose containing composite products
US9586338B2 (en) 2012-10-01 2017-03-07 Georgia-Pacific Chemicals Llc Methods for making lignocellulose containing composite products
US9157016B2 (en) 2012-10-01 2015-10-13 Georgia-Pacific Chemicals Llc Modified polyphenol binder compositions and methods for making and using same
US9243114B2 (en) 2013-03-14 2016-01-26 Georgia-Pacific Chemicals Llc Binder compositions and methods for making and using same
US9587077B2 (en) 2013-03-14 2017-03-07 Georgia-Pacific Chemicals Llc Methods for making composite products containing lignocellulose substrates
CA2934689C (en) 2013-12-20 2020-03-10 Georgia Pacific Chemicals Llc Release aids with adjustable cloud points for creping processes
CA2944623A1 (en) 2014-04-02 2015-10-08 Georgia-Pacific Chemicals Llc Methods for making lignocellulose composite products with oxidative binders and complexed metal catalyst
WO2015153517A1 (en) 2014-04-02 2015-10-08 Georgia-Pacific Chemicals Llc Methods for making lignocellulose composite products
WO2016049567A1 (en) 2014-09-26 2016-03-31 Renmatix, Inc. Cellulose-containing compositions and methods of making same
CA3001503C (en) 2015-10-21 2023-05-23 Huntsman International Llc Incorporation of lignin in polyurethane products
US11155513B2 (en) * 2017-04-20 2021-10-26 Spero Renewables, Llc Extraction of natural ferulate and coumarate from biomass
JP2022515817A (ja) 2019-01-04 2022-02-22 スザノ カナダ インコーポレイテッド リグニン強化されたブチルゴム
US11118017B2 (en) 2019-11-13 2021-09-14 American Process International LLC Process for the production of bioproducts from lignocellulosic material
US11306113B2 (en) 2019-11-13 2022-04-19 American Process International LLC Process for the production of cellulose, lignocellulosic sugars, lignosulfonate, and ethanol
EP4549649A1 (en) * 2023-10-30 2025-05-07 Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO Organosolv fractionation process for fractionating lignocellulosic biomass

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE532741C (de) * 1929-11-02 1931-09-08 Kurt Von Tayenthal Dr Ing Verfahren zum Aufschluss von Pflanzenfaserstoffen
AT124738B (de) * 1929-11-02 1931-10-10 Theodor Dr Ing Kleinert Verfahren zum Aufschluß von Pflanzenfaserstoffen behufs gleichzeitiger Gewinnung der Zellulose und der inkrustierenden Substanzen.
US1856567A (en) * 1929-11-02 1932-05-03 Kleinert Theodor Process of decomposing vegetable fibrous matter for the purpose of the simultaneous recovery both of the cellulose and of the incrusting ingredients
GB421379A (en) * 1933-06-12 1934-12-12 Henry Dreyfus Improvements in or relating to the production of cellulose from lignocellulosic materials
US3585104A (en) * 1968-07-29 1971-06-15 Theodor N Kleinert Organosolv pulping and recovery process
US4100016A (en) * 1975-10-24 1978-07-11 C P Associates Limited Solvent pulping process

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB398801A (en) * 1932-02-16 1933-09-18 Henry Dreyfus Improvements in or relating to the manufacture of cellulose or cellulosic materials
US2037001A (en) * 1934-07-18 1936-04-14 Northwest Paper Company Alcoholic treatment of ligneous cellulosic material
US2382044A (en) * 1942-07-03 1945-08-14 Eastman Kodak Co Production of water-free alcohol
US3253976A (en) * 1960-01-04 1966-05-31 Bocci Aniello Method of recovering waste paper
BE756225A (fr) * 1969-09-26 1971-03-01 Brev Ind Et Chimiques Soc Gen Procede de fabrication de pate cellulosique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE532741C (de) * 1929-11-02 1931-09-08 Kurt Von Tayenthal Dr Ing Verfahren zum Aufschluss von Pflanzenfaserstoffen
AT124738B (de) * 1929-11-02 1931-10-10 Theodor Dr Ing Kleinert Verfahren zum Aufschluß von Pflanzenfaserstoffen behufs gleichzeitiger Gewinnung der Zellulose und der inkrustierenden Substanzen.
US1856567A (en) * 1929-11-02 1932-05-03 Kleinert Theodor Process of decomposing vegetable fibrous matter for the purpose of the simultaneous recovery both of the cellulose and of the incrusting ingredients
GB421379A (en) * 1933-06-12 1934-12-12 Henry Dreyfus Improvements in or relating to the production of cellulose from lignocellulosic materials
US3585104A (en) * 1968-07-29 1971-06-15 Theodor N Kleinert Organosolv pulping and recovery process
US4100016A (en) * 1975-10-24 1978-07-11 C P Associates Limited Solvent pulping process

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
Chemikal Engineering Progress, Febr. 1980, S. 62-67 *
HOFMANN, C.: Praktisches Handbuch der Papier-Fabrikation, 1897, II. Bd., S. 1396-1399 *
Papier-Zeitung 37, 1912, H. 18, S. 647-648 *
TAPPI 53, 1970, H. 10, S. 1935-1940 *
TAPPI 57, 1974, H. 8, S. 170-171 *
TAPPI 58, 1975, H. 8, S. 99-102 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2737118A1 (de) * 1977-08-17 1979-03-01 Projektierung Chem Verfahrenst Verfahren zur gewinnung von zuckern, gegebenenfalls cellulose und gegebenenfalls lignin aus lignocellulosischen pflanzlichen rohstoffen
DK154348B (da) * 1977-08-17 1988-11-07 Thermoform Bau Forschung Fremgangsmaade til udvinding af sukkerarter, lignin og eventuelt cellulose fra lignocelluloseholdige planteraastoffer
EP0090969A1 (de) * 1982-04-06 1983-10-12 MD-Organocell Gesellschaft für Zellstoff- und Umwelttechnik mbH Verfahren und Reaktor zum kontinuierlichen Aufschliessen von Pflanzenfasermaterial
EP0432310A1 (en) * 1986-05-29 1991-06-19 Tigney Technology Inc. A method for extracting the chemical components from dissociated lignocellulosic material
DE102014221238A1 (de) * 2014-10-20 2016-04-21 Mpg Max-Planck-Gesellschaft Zur Förderung Der Wissenschaften E.V. Verfahren zur Fällung von Lignin aus Organosolv-Kochlaugen

Also Published As

Publication number Publication date
FI65290B (fi) 1983-12-30
DE2637449C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1988-12-15
AT369801B (de) 1983-02-10
FI762745A7 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1977-04-25
SE7611648L (sv) 1977-04-25
FI65290C (fi) 1984-04-10
ATA706376A (de) 1979-08-15
US4100016A (en) 1978-07-11
NO149115C (no) 1984-02-15
JPS5259702A (en) 1977-05-17
JPS616193B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1986-02-24
CH617476A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1980-05-30
NO763603L (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1977-04-26
NO149115B (no) 1983-11-07
SE428028B (sv) 1983-05-30
CA1079008A (en) 1980-06-10

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Owner name: BIOLOGICAL ENERGY CORP. (EINE GESELLSCHAFT N.D.GES

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Representative=s name: SCHUELER, H., DIPL.-CHEM. DR.RER.NAT., PAT.-ANW.,

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Owner name: REPAP TECHNOLOGIES INC., VALLEY FORGE, PA., US

8128 New person/name/address of the agent

Representative=s name: GRUENECKER, A., DIPL.-ING. KINKELDEY, H., DIPL.-IN

D2 Grant after examination
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Owner name: ALCELL TECHNOLOGIES INC., NEWCASTLE, NEW BRUNSWICK

8328 Change in the person/name/address of the agent

Free format text: GRUENECKER, A., DIPL.-ING. KINKELDEY, H., DIPL.-ING. DR.-ING. STOCKMAIR, W., DIPL.-ING. DR.-ING. AE.E. CAL TECH SCHUMANN, K., DIPL.-PHYS. DR.RER.NAT. JAKOB, P., DIPL.-ING. BEZOLD, G., DIPL.-CHEM. DR.RER.NAT. MEISTER, W., DIPL.-ING. HILGERS, H., DIPL.-ING. MEYER-PLATH, H., DIPL.-ING. DR.-ING. EHNOLD, A., DIPL.-ING. SCHUSTER, T., DIPL.-PHYS. VOGELSANG-WENKE, H., DIPL.-CHEM. DIPL.-BIOL.UNIV. DR.RER.NAT. GOLDBACH, K., DIPL.-ING.DR.-ING. AUFENANGER, M., DIPL.-ING. KLITZSCH, G., DIPL.-ING., PAT.-ANWAE