CA2346915A1 - Method for producing cellulose - Google Patents

Method for producing cellulose Download PDF

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Publication number
CA2346915A1
CA2346915A1 CA002346915A CA2346915A CA2346915A1 CA 2346915 A1 CA2346915 A1 CA 2346915A1 CA 002346915 A CA002346915 A CA 002346915A CA 2346915 A CA2346915 A CA 2346915A CA 2346915 A1 CA2346915 A1 CA 2346915A1
Authority
CA
Canada
Prior art keywords
liquor
pinene
polysulphide
trs
reduce
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
CA002346915A
Other languages
French (fr)
Other versions
CA2346915C (en
Inventor
Alexandr Gorokhov
Irina Yeremeyeva
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
Publication of CA2346915A1 publication Critical patent/CA2346915A1/en
Application granted granted Critical
Publication of CA2346915C publication Critical patent/CA2346915C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • D21C3/022—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of S-containing compounds
    • 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
    • D21C11/0057—Oxidation of liquors, e.g. in order to reduce the losses of sulfur compounds, followed by evaporation or combustion if the liquor in question is a black liquor
    • 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
    • D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
    • D21C11/0078—Treatment of green or white liquors with other means or other compounds than gases, e.g. in order to separate solid compounds such as sodium chloride and carbonate from these liquors; Further treatment of these compounds
    • 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
    • D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds

Abstract

The enhanced method of sulphate/polysulphide pulping includes production of highselective polysulphide liquor by oxidation of white liquor using new heterogeneous A, B or C catalysts; wood cooking in produced liquor; pulp washing, separation; its delignification using polysulphide liquor to Kappa number 3 - 8, with further non-chlorine bleaching; spent liquor regeneration;
rectification of TRS sulphides (hydrogen sulphide, methylmercaptan, dimethylsulphide, dimethyldisulphide) and a-pinene, with overheated steam, with their following oxidation in contaminated condensates, gases and vent emissions, with heterogeneous D and C catalyst, to formation of non-volatile water-soluble non-toxic sulphates (Na2SO4), thiosulphates (Na2S2O3) and sulphonates;
direction of decontaminated condensates to pulp or caustic mud washing.
The method allows to increase the yield of qualitative cellulose by 3 - 10%, to reduce release of volatile sulphides and a-pinene at the cooking stage, by 60 - 80%; to reduce power consumption for decontamination from TRS
and a-pinene, by over 10 times. This method excludes secondary emission of acidic gases SO2, NO2, CO2 into the atmosphere, as well as to reduce consumption of wood, water and fuel.
CA002346915A 1999-02-22 1999-02-22 Method for producing cellulose Expired - Fee Related CA2346915C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB1999/000388 WO2000050689A1 (en) 1999-02-22 1999-02-22 Method for producing cellulose

Publications (2)

Publication Number Publication Date
CA2346915A1 true CA2346915A1 (en) 2000-08-31
CA2346915C CA2346915C (en) 2005-09-27

Family

ID=11004830

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002346915A Expired - Fee Related CA2346915C (en) 1999-02-22 1999-02-22 Method for producing cellulose

Country Status (2)

Country Link
CA (1) CA2346915C (en)
WO (1) WO2000050689A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114122424A (en) * 2021-10-26 2022-03-01 合肥师范学院 Preparation method of hydrophilic carbon-based Ni nano ORR electrocatalyst
CN116022783A (en) * 2023-01-09 2023-04-28 南阳天成新能源科技有限公司 Modified graphite negative electrode material and preparation method and application thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1093739A1 (en) * 1983-01-13 1984-05-23 Украинское научно-производственное объединение целлюлозно-бумажной промышленности Method of preparing polysulfide of alkali metal for digesting cellulose-containing primary material
RU2006269C1 (en) * 1991-12-16 1994-01-30 Горохов Александр Петрович Method of purifying gas condensates from sulfur containing compounds
RU2000140C1 (en) * 1991-12-16 1993-09-07 Александр Петрович Горохов Method for preparing catalyst for purifying gas condensates from sulfur-containing compounds

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114122424A (en) * 2021-10-26 2022-03-01 合肥师范学院 Preparation method of hydrophilic carbon-based Ni nano ORR electrocatalyst
CN114122424B (en) * 2021-10-26 2023-11-10 合肥师范学院 Preparation method of hydrophilic carbon-based Ni nano ORR electrocatalyst
CN116022783A (en) * 2023-01-09 2023-04-28 南阳天成新能源科技有限公司 Modified graphite negative electrode material and preparation method and application thereof
CN116022783B (en) * 2023-01-09 2023-08-08 南阳天成新能源科技有限公司 Modified graphite negative electrode material and preparation method and application thereof

Also Published As

Publication number Publication date
CA2346915C (en) 2005-09-27
WO2000050689A1 (en) 2000-08-31

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20180222