EP3443159A1 - Processus continu destiné à la production de pâte de cellulose - Google Patents

Processus continu destiné à la production de pâte de cellulose

Info

Publication number
EP3443159A1
EP3443159A1 EP16722693.5A EP16722693A EP3443159A1 EP 3443159 A1 EP3443159 A1 EP 3443159A1 EP 16722693 A EP16722693 A EP 16722693A EP 3443159 A1 EP3443159 A1 EP 3443159A1
Authority
EP
European Patent Office
Prior art keywords
linne
cellulose pulp
bleaching
cellulose
continuous
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
EP16722693.5A
Other languages
German (de)
English (en)
Other versions
EP3443159B1 (fr
Inventor
Marinko Mikulic
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to RS20200820A priority Critical patent/RS60519B1/sr
Priority to PL16722693T priority patent/PL3443159T3/pl
Publication of EP3443159A1 publication Critical patent/EP3443159A1/fr
Application granted granted Critical
Publication of EP3443159B1 publication Critical patent/EP3443159B1/fr
Priority to HRP20200981TT priority patent/HRP20200981T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0007—Recovery of by-products, i.e. compounds other than those necessary for pulping, for multiple uses or not otherwise provided for
    • 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
    • D21C9/1063—Bleaching ; Apparatus therefor with compounds not otherwise provided for, e.g. activated gases
    • 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
    • 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

Definitions

  • the technical problem solved with the disclosed invention is to find a solution within the frame of "green"-chemical technology, characterized by:
  • McQueen-Mason Microwave assisted chemical pretreatment of Miscanthus under different temperature regimes, Sustain. Chem. Process 3 (2015) DOI : 10.1186/s40508-015-0041-6.
  • the bleaching is another important key step in manufacturing of cellulose of high whiteness is the bleaching step.
  • the most common systems for cellulose bleaching are those based on chlorine-containing systems, e.g. sodium hypochlorite (NaOCl), or hydrogen peroxide ( H2O2 ) -based systems, the latter one being preferred .
  • H2O2 hydrogen peroxide
  • NaOH sodium hydroxide
  • sodium silicate solution can also be optionally employed as the stabilizer for H2O2; see reference 7:
  • the cooking chemicals for the digestion step (ii) are introduced as a mixture of concentrated aqueous solutions of 20-50% w/w NaOH and 10-30% w/w of NaCl .
  • microwave (MW) -heating can be optionally employed; marked with intermittent line.
  • the process is performed in a continuous manner through several manufacturing phases, as shown in Figures 1 and 2 :
  • Continuous digestion or cooking of a grass-like dust-free plant feedstock prepared in step (i) is performed in a continuous digester (1) formed as a longitudinal column, internally equipped with worm screw conveyor and a heating unit, where grass-like plant feedstock is continuously fed directly on the top of the said digester via conveyor (4) .
  • the black liquor from the dewatering step (vi) is transported via manifold (10) into the electrolytic reactor (19) for regeneration of cooking chemicals solution and isolation of lignin and other non- cellulosic by-products.
  • the bleached cellulose pulp is additionally washed (phase vii) in the washing vessel (12) with additional fresh water, which is introduced through the manifold (13), giving:
  • optimal degree of the black liquor concentration is" preferably up to 0.9- 1.05 w/w of sodium (as Na + ) in the concentrated black liquor that enters the electrolytic reactor (19) .
  • PVDF sulfonated polytetrafluoroethylene
  • Nafion R sulfonated polytetrafluoroethylene
  • clay and sodium silicate from combinations of said materials, or from other suitable chemically resistant materials.
  • the lignin and other by-products are separated on the top of the electrolyte solution from the anode ( + ) compartment, and are removed out from the process by conventional mechanic means, via conveyor or so. Separation of lignin within the anode (+) compartment is facilitated by the evolution of gaseous oxygen (O2) as a by-product of accompanied water electrolysis.
  • O2 gaseous oxygen

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Abstract

La présente invention concerne un processus continu destiné à la production de pâte de cellulose à blancheur très élevée à partir de matière première végétale de type herbe appropriée pour la fabrication de papier. Le processus comprend les étapes suivantes : préparation de la matière première végétale de type herbe par fragmentation ; dépoussiérage ; digestion continue avec des concentrations optimisées de NaOH et de NaCl ; dispersion ; blanchiment continu avec des concentrations optimisées de H2O2 et de silicate de sodium sans l'utilisation de NaOH ; dispersion facultative ; déshydratation pour éliminer la liqueur noire ; et lavage, pour obtenir une pâte de cellulose finale à blancheur très élevée, > 90 %, appropriée pour la fabrication de feuilles de cellulose ou de papier. Le processus comprend en outre l'élimination électrolytique intégrée de lignine et d'autres sous-produits, accompagnée de la régénération de solution de produit chimique de cuisson, ce qui permet un cycle de matériaux de traitement complètement fermé. Dans un mode de réalisation de l'invention, le chauffage des étapes de digestion et de blanchiment peut être éventuellement effectué par chauffage par micro-ondes (MW). La matière première de type herbe préférée pour le processus est le miscanthus (Miscanthus x giganteus, Andersson).
EP16722693.5A 2016-04-15 2016-04-15 Processus continu destiné à la production de pâte de cellulose Active EP3443159B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
RS20200820A RS60519B1 (sr) 2016-04-15 2016-04-15 Kontinuirani postupak za proizvodnju celulozne pulpe
PL16722693T PL3443159T3 (pl) 2016-04-15 2016-04-15 Ciągły sposób wytwarzania masy celulozowej
HRP20200981TT HRP20200981T1 (hr) 2016-04-15 2020-06-22 Kontinuirani postupak za dobivanje celulozne pulpe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/HR2016/000014 WO2017178849A1 (fr) 2016-04-15 2016-04-15 Processus continu destiné à la production de pâte de cellulose

Publications (2)

Publication Number Publication Date
EP3443159A1 true EP3443159A1 (fr) 2019-02-20
EP3443159B1 EP3443159B1 (fr) 2020-06-03

Family

ID=55969172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16722693.5A Active EP3443159B1 (fr) 2016-04-15 2016-04-15 Processus continu destiné à la production de pâte de cellulose

Country Status (7)

Country Link
EP (1) EP3443159B1 (fr)
DK (1) DK3443159T3 (fr)
ES (1) ES2806475T3 (fr)
HR (1) HRP20200981T1 (fr)
PL (1) PL3443159T3 (fr)
RS (1) RS60519B1 (fr)
WO (1) WO2017178849A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024031173A1 (fr) * 2022-08-12 2024-02-15 Sixring Inc. Optimisation de la consommation chimique dans la délignification de biomasse

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HRP20190259A2 (hr) 2019-02-07 2020-08-21 Marinko Mikulić Kontinuirani postupak proizvodnje celulozne pulpe iz travnatih sirovina
EP4269687A1 (fr) * 2022-04-26 2023-11-01 Wepa Professional GmbH Procédé de production de cellulose et d'extraction de lignine à partir d'une lignocellulose à partir des matières premières végétales du genre miscanthus

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2692181A (en) 1950-03-08 1954-10-19 Buffalo Electro Chem Co Treatment of unbleached sulfite pulp
FR1112830A (fr) 1953-09-30 1956-03-19 Aschaffenburger Zellstoffwerke Procédé pour la fabrication de semi-cellulose à partir de bois feuillu
GB1217833A (en) * 1967-01-16 1970-12-31 Electric Reduction Co Improved cellulosic pulp process
SE400997B (sv) * 1972-12-15 1978-04-17 Erco Envirotech Ltd Sett for avlegsnande av natriumklorid ur regenererad vitlut
EP0214982A1 (fr) * 1984-05-15 1987-03-25 FLINCK, Karl-Evert Procede de blanchiment de pulpe fibreuse pour la production de papier et carton
US4584075A (en) 1984-11-26 1986-04-22 Ionics Incorporated Process and apparatus for electrically desorbing components selectively sorbed on an electrolytically conducting barrier
CA2038651C (fr) 1991-03-19 1995-12-12 Kwei-Nam Law Methode et appareil de blanchiment de la pate a papier
SE470538C (sv) * 1992-12-02 1996-02-26 Kvaerner Pulping Tech Sätt vid blekning av massa utan användning av klorhaltiga kemikalier
DE19603491C2 (de) 1996-01-31 1999-04-08 Abu Shaar Isam Verfahren zur Herstellung eines fasrigen Zellulosestoffes und dessen Verwendung
FI126563B (en) * 2012-03-12 2017-02-15 Upm Kymmene Corp A method and system for treating fluid flows at a pulp mill
WO2015150841A1 (fr) 2014-03-31 2015-10-08 Marinko MIKULIC Procédé continu de production de pâte de cellulose à partir de matières premières végétales semblables à l'herbe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024031173A1 (fr) * 2022-08-12 2024-02-15 Sixring Inc. Optimisation de la consommation chimique dans la délignification de biomasse

Also Published As

Publication number Publication date
PL3443159T3 (pl) 2020-09-21
WO2017178849A1 (fr) 2017-10-19
ES2806475T3 (es) 2021-02-17
EP3443159B1 (fr) 2020-06-03
DK3443159T3 (da) 2020-07-27
HRP20200981T1 (hr) 2020-10-16
RS60519B1 (sr) 2020-08-31

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