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EP0593743A1 - Fabrication de cellulose selon le procede soude-anthraquinone avec recuperation des produits chimiques d'ebullition - Google Patents

Fabrication de cellulose selon le procede soude-anthraquinone avec recuperation des produits chimiques d'ebullition

Info

Publication number
EP0593743A1
EP0593743A1 EP93911418A EP93911418A EP0593743A1 EP 0593743 A1 EP0593743 A1 EP 0593743A1 EP 93911418 A EP93911418 A EP 93911418A EP 93911418 A EP93911418 A EP 93911418A EP 0593743 A1 EP0593743 A1 EP 0593743A1
Authority
EP
European Patent Office
Prior art keywords
cooking
salts
acid
solution
sodium hydroxide
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
EP93911418A
Other languages
German (de)
English (en)
Other versions
EP0593743B1 (fr
Inventor
Otto W. Gordon
Eric Plattner
Frank Doppenberg
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.)
Granit SA
Original Assignee
Granit SA
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 Granit SA filed Critical Granit SA
Publication of EP0593743A1 publication Critical patent/EP0593743A1/fr
Application granted granted Critical
Publication of EP0593743B1 publication Critical patent/EP0593743B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21C3/22—Other features of pulping processes
    • D21C3/222—Use of compounds accelerating the pulping 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
    • D21C11/0057—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
    • D21C11/12—Combustion of pulp liquors
    • D21C11/14—Wet combustion ; Treatment of pulp liquors without previous evaporation, by oxidation of the liquors remaining at least partially in the liquid phase, e.g. by application or pressure
    • 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
    • D21C3/003—Pulping cellulose-containing materials with organic 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes

Definitions

  • the invention relates to a method with which it is possible to produce pulp from the types of wood such as hardwoods and softwoods and from annual plants and to recycle the cooking chemicals present in the black liquor.
  • the sulfa process (S.V. Rydholm, Pulping Processes (1965), p. 576 ff) and the sulfite process (S.V. Rydholm, Pulping processes (1965) p. 439 ff) are mainly used for the production of cellulose.
  • the sulfite process has the disadvantage that the pulp qualities in the technical data do not meet all the desired requirements.
  • the main disadvantage of the sulfate process is that
  • Organosolv processes also include the
  • wood can also be digested in an aqueous solution of alkali salts of various alkylbenzenesulfonic acids, referred to as hydrothropic salts, and sodium hydroxide solution, under conditions that are common in the power process.
  • hydrothropic salts alkali salts of various alkylbenzenesulfonic acids
  • sodium hydroxide solution sodium hydroxide solution
  • anthraquinone up to 0.2% based on wood is considered to be state of the art in various cellulose production processes. For example with the soda process, the Kraft process and the Organocell process.
  • Anthraquinone is considered a catalyst for delignification.
  • the advantages of this addition are that further delignification of wood, which the
  • the disadvantage of the anthraquinone additive is that there is no useful recovery process for anthraquinone.
  • Pulp according to the S.A.P. Method is characterized in the twelve enclosed patent claims.
  • the advantage of this process is that the entire process of sulfide and sulfite ions can be carried out free and thus odorless, and the existing installations, such as those used for the power cooking process, can continue to be used.
  • the complex, reducing black liquor combustion with energy recovery is replaced by wet oxidation, which results in a significant reduction in investment.
  • explosion protection is not necessary, and the pressures during the cooking process are the same as in the power process between 6 and 8 bar. An alcohol recovery system is saved, the energy-consuming thickening of black liquor in front of the recovery boiler is no longer necessary.
  • wood chips are introduced into a continuous pulp cooker via an entry system and with a solution of sodium hydroxide with the addition of anthraquinone and possibly hydrothropic salts for 50 minutes to 2 hours at temperatures from 120 ° C to 200 ° C at the resulting pressure, washed in countercurrent with water and discharged into the blow-pit.
  • the cooking process
  • Pulp is made according to the state of the art.
  • the black liquor is subjected to a partial wet oxidation process which allows the organic substances to be burned and, "surprisingly, could be found without oxidizing the hydrothropic salts, anthraquinone and the lower carboxylic acids such as acetates.
  • the sodium hydroxide solution bound to the oxidizing substances is converted into inorganic sodium bicarbonate and carbonate. This partial oxidation takes place in the aqueous phase with air, oxygen or mixtures of these two, under pressure and at elevated temperature.
  • This wet oxidation can be carried out in a continuous or discontinuous procedure in a reactor with thorough mixing, at pressures from 20 to 300 bar and at temperatures from 120 ° C to 350 ° C, with the introduction of Oxidizing agent run for 5 to 60 minutes.
  • the gaseous oxidation products and inert gases emerging from the reactor together with water vapor ⁇ are treated separately.
  • the liquid which is treated by partial wet oxidation and which comes from the reactor contains, in addition to the sodium carbonates and bicarbonates, the hydrothropic salts, the sodium salts of the carboxylic acids, in particular the 0 acetic acid and anthraquinone in solid form, which is separated off by filtration.
  • this solution can be converted into carbonates by chewing with calcium oxide in sodium hydroxide solution of the carboxylic acids, in particular 5 of the acetic acid, in addition to the hydrothropic salts with the precipitation of calcium carbonate.
  • the cooking liquor recovered in this way is after concentration and partial crystallization of the carboxylic acid salts, especially the
  • Fir wood chips without bark were brought in an autoclave with four times the amount of cooking liquor in an oil bath to an internal temperature of 170 ° C. for 60 minutes and kept at this temperature for 120 minutes. After cooling to 40 ° C, the autoclave was opened and the black liquor decanted.
  • the fibrous portion was washed with hot water and sent for analysis.
  • the kappa number of the . obtained pulp could be determined at 28.
  • the mixture of Fitrat and wash water was the
  • Oxidation reactor fed After a temperature of 280 ° C. and a pressure of 200 bar was reached, the oxidation was carried out by blowing air in for 10 minutes. The energy released by the oxidation made it possible to reduce the volume of liquid by evaporation to approximately half the volume of the black liquor.
  • a slightly yellow colored liquid, known as green liquor was obtained, which was heated to boiling temperature with 83 g of calcium hydroxide per kg of dry wood. The precipitated calcium carbonate was separated by sedimentation.
  • the composition of the residual solution called white liquor and the green liquor can be read in Table I.
  • the residual solution was adjusted to the appropriate concentration after adding an amount of sodium hydroxide solution corresponding to the sodium acetate and returning the anthraquinone and returned to the cooking process.
  • compositions of the Cooking, black, green and white lyes use the values specified in Table II.
  • the white liquor Before being returned to the cooking process, the white liquor is thickened to a solids content of 38.5%. By cooling to 20 ° C, 340g sodium acetate trihydrate crystallize per kg dry wood. A quantity of sodium hydroxide solution corresponding to the isolated acetate is added to the mother liquor and then returned to the cooking process after the concentration has been adjusted.
  • Washed pulp with hot water The pulp yield was 52% by weight based on wood.
  • Kappa number could be determined at 22, the DP was included
  • the black liquor was gassed with CO 2 and the majority of the lignin was precipitated, filtered and washed. 12% by weight of lignin, based on wood, were obtained.
  • Lignin filtration was subjected to wet oxidation by blowing oxygen in for 15 minutes at 220 ° C. and a pressure of 180 bar.
  • the volume of liquid could be reduced by the
  • Lignin wash water can be reduced. H After converting sodium bicarbonate to sodium carbonate, the solution was mixed with 104 g calcium hydroxide per kg wood in order to convert sodium carbonate into sodium hydroxide, calcium carbonate being separated off by sedimentation. The solution was thickened to a solids content of 45%. By cooling this solution, 227 g of sodium acetate trihydrate per kg of wood could be crystallized out and separated off. After redissolving the sodium acetate, the sodium hydroxide solution was separated by Q electrodialysis for reuse in the cooking process. Acetic acid was available for other purposes.
  • the residual solution (including sodium hydroxide solution from electrodialysis) had the following composition: 16.5% by weight of 5NaOH, 18.5% by weight of sodium toluenesulfonic acid, 3.5% by weight of sodium acetate, calculated on dry wood. After adjusting the concentration, this solution was used again for a cooking process, which gave an identical result. The loss of cooking chemicals was 8%.
  • Lignin was precipitated from the black liquor with acetic acid. After filtration and washing, 18% lignin based on wood was obtained.
  • the mixture of filtrate and wash water was mixed with sodium hydroxide solution and subjected to the wet oxidation for 15 minutes with air at 260 ° C. and 180 bar.
  • the pH after this treatment was 7.5.
  • the composition of the black liquors (before and after lignin precipitation) and the oxidized green liquor are summarized in Table III.
  • the clarified green liquor became the anodic part of a
  • Membrane electrolysis cell supplied while water flows to the cathodic part.
  • the anodic liquid is recovered with the
  • the lye is mixed and, after adjusting the concentration, used as the cooking lye.
  • the acetic acid is used for the lignin precipitation, the excess (80 g per kg wood) is available.
  • composition of the green and white liquors are also given in Table III.
  • the chemical loss corresponds to about 5%.
  • Wheat straw straws are poured onto the dry matter with cooking liquor in a ratio of 1: 5 and kept at 170 ° C. for 100 minutes.
  • the cellulose yield after washing and classifying the fiber was 45% based on dry matter.
  • the waste resulting from the classification is added to the black liquor, which is subjected to wet oxidation with air at 280 ° C, 200 bar and 7 minutes.
  • wet oxidation with air at 280 ° C, 200 bar and 7 minutes.
  • anthraquinone is recovered with small amounts of inorganic substance.
  • the white liquor Concentrated to 38.5% solid and isolated by cooling to 20 ° C, 360 g per kr wheat straw dry on sodium acetate trihydrate.
  • This salt can either be used outside of the cooking process, 5 in this case an amount of sodium hydroxide equivalent to the isolated sodium acetate should be added during recycling in the cooking process, or, by electrodialysis of the redissolved salt, the sodium hydroxide thus obtained should be returned to the cooking process.
  • the " acetic acid produced is used outside of the cooking process.
  • composition of the various lyes can be found in Table IV.
  • the chemical loss per cooking process is 5%. 5

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Pour la fabrication de la cellulose à partir de bois et de plantes annuelles, on propose un procédé de mise en ébullition dans lequel la liqueur d'ébullition comporte une lessive de soude libre et le cas échéant des sels sodés des acides alkylbenzènesulfoniques ou des acides carboxyliques aromatiques et aliphatiques. Par addition d'anthraquinone ou de dérivés de cette substance dans la liqueur d'ébullition, on renforce la délignification. Il n'est plus nécessaire de limiter les quantités d'hydroquinone ajoutées, en raison du prix de cette substance, du fait que l'anthraquinone résiste à l'oxydation par voie humide et peut être réutilisée dans le processus de mise en ébullition. La solubilité et par conséquent l'action de l'anthraquinone sont augmentées grâce à l'utilisation de sels de l'acide sulfonique. Pour récupérer les produits chimiques d'ébullition présents dans la liqueur noire, il est proposé de précipiter la lignine présente dans la solution avec un acide minérale ou un acide carboxylique, le cas échéant, de séparer les hémicelluloses par ultrafiltration et les résines par extraction et de brûler les composés organiques restants autres que les sels de l'acide sulfonique et les sels de l'acide carboxylique par oxydation en phase aqueuse avec de l'air et/ou de l'oxygène. La solution de produits chimiques libérée par les produits de la décomposition du bois peut être réintroduite dans la liqueur, après caustification des carbonates, et mise à disposition, après une cristallisation partielle des sels aliphatiques de l'acide carboxylique, dans le circuit de production de cellulose. L'acétate de sodium isolé par cristallisation peut être dissocié en acide acétique et en hydroxyde de sodium par électrolyse réalisée avec une membrane. La lessive de soude est réintroduite dans le processus de cuisson et l'acide acétique est traité séparément.
EP93911418A 1992-05-05 1993-04-30 Fabrication de cellulose selon le procede soude-anthraquinone avec recuperation des produits chimiques d'ebullition Expired - Lifetime EP0593743B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH01434/92A CH686682A5 (de) 1992-05-05 1992-05-05 Herstellung von Zellstoff nach dem S.A.P.-Verfahren.
CH1434/92 1992-05-05
PCT/CH1993/000108 WO1993022492A1 (fr) 1992-05-05 1993-04-30 Fabrication de cellulose selon le procede soude-anthraquinone avec recuperation des produits chimiques d'ebullition

Publications (2)

Publication Number Publication Date
EP0593743A1 true EP0593743A1 (fr) 1994-04-27
EP0593743B1 EP0593743B1 (fr) 1998-01-14

Family

ID=4210375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93911418A Expired - Lifetime EP0593743B1 (fr) 1992-05-05 1993-04-30 Fabrication de cellulose selon le procede soude-anthraquinone avec recuperation des produits chimiques d'ebullition

Country Status (14)

Country Link
US (1) US5595628A (fr)
EP (1) EP0593743B1 (fr)
JP (1) JP2709192B2 (fr)
AT (1) ATE162245T1 (fr)
AU (1) AU663784B2 (fr)
BR (1) BR9305510A (fr)
CA (1) CA2112802C (fr)
CH (1) CH686682A5 (fr)
DE (1) DE59307986D1 (fr)
DK (1) DK0593743T3 (fr)
ES (1) ES2114607T3 (fr)
FI (1) FI115845B (fr)
NZ (1) NZ251963A (fr)
WO (1) WO1993022492A1 (fr)

Families Citing this family (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH686682A5 (de) * 1992-05-05 1996-05-31 Granit Sa Herstellung von Zellstoff nach dem S.A.P.-Verfahren.
WO1995000698A1 (fr) * 1993-06-25 1995-01-05 Kamyr, Inc. Recuperation d'hemicellulose dans le procede kraft
DE19742748A1 (de) * 1997-09-27 1999-04-01 Degussa Verfahren zum Delignifizieren und Bleichen von Zellstoffen unter Verwendung elektrochemisch oxidierbarer organischer Verbindungen
US6673982B1 (en) * 1998-10-02 2004-01-06 Kimberly-Clark Worldwide, Inc. Absorbent article with center fill performance
US6562192B1 (en) 1998-10-02 2003-05-13 Kimberly-Clark Worldwide, Inc. Absorbent articles with absorbent free-flowing particles and methods for producing the same
US6503233B1 (en) 1998-10-02 2003-01-07 Kimberly-Clark Worldwide, Inc. Absorbent article having good body fit under dynamic conditions
US6667424B1 (en) * 1998-10-02 2003-12-23 Kimberly-Clark Worldwide, Inc. Absorbent articles with nits and free-flowing particles
US6409883B1 (en) 1999-04-16 2002-06-25 Kimberly-Clark Worldwide, Inc. Methods of making fiber bundles and fibrous structures
DE10041077A1 (de) * 2000-08-22 2002-03-21 Siemens Ag Verfahren zur Prozesskontrolle bei der Zellstoffherstellung
US6610173B1 (en) 2000-11-03 2003-08-26 Kimberly-Clark Worldwide, Inc. Three-dimensional tissue and methods for making the same
US6701637B2 (en) 2001-04-20 2004-03-09 Kimberly-Clark Worldwide, Inc. Systems for tissue dried with metal bands
US6837956B2 (en) * 2001-11-30 2005-01-04 Kimberly-Clark Worldwide, Inc. System for aperturing and coaperturing webs and web assemblies
US20030118761A1 (en) 2001-12-21 2003-06-26 Kimberly-Clark Worldwide, Inc. Elastomeric articles having improved chemical resistance
US7799968B2 (en) 2001-12-21 2010-09-21 Kimberly-Clark Worldwide, Inc. Sponge-like pad comprising paper layers and method of manufacture
US6911114B2 (en) * 2002-10-01 2005-06-28 Kimberly-Clark Worldwide, Inc. Tissue with semi-synthetic cationic polymer
TWI268972B (en) * 2002-11-27 2006-12-21 Kimberly Clark Co Rolled tissue products having high bulk, softness, and firmness
US6887348B2 (en) * 2002-11-27 2005-05-03 Kimberly-Clark Worldwide, Inc. Rolled single ply tissue product having high bulk, softness, and firmness
US20040111817A1 (en) * 2002-12-17 2004-06-17 Kimberly-Clark Worldwide, Inc. Disposable scrubbing product
US7994079B2 (en) * 2002-12-17 2011-08-09 Kimberly-Clark Worldwide, Inc. Meltblown scrubbing product
US20040118530A1 (en) * 2002-12-19 2004-06-24 Kimberly-Clark Worldwide, Inc. Nonwoven products having a patterned indicia
US7147751B2 (en) * 2002-12-20 2006-12-12 Kimberly-Clark Worldwide, Inc. Wiping products having a low coefficient of friction in the wet state and process for producing same
US6994770B2 (en) * 2002-12-20 2006-02-07 Kimberly-Clark Worldwide, Inc. Strength additives for tissue products
US6896767B2 (en) * 2003-04-10 2005-05-24 Kimberly-Clark Worldwide, Inc. Embossed tissue product with improved bulk properties
US7052642B2 (en) * 2003-06-11 2006-05-30 Kimberly-Clark Worldwide, Inc. Composition for forming an elastomeric article
US20050136772A1 (en) * 2003-12-23 2005-06-23 Kimberly-Clark Worldwide, Inc. Composite structures containing tissue webs and other nonwovens
US20060070712A1 (en) * 2004-10-01 2006-04-06 Runge Troy M Absorbent articles comprising thermoplastic resin pretreated fibers
US20060086472A1 (en) * 2004-10-27 2006-04-27 Kimberly-Clark Worldwide, Inc. Soft durable paper product
US20060135026A1 (en) * 2004-12-22 2006-06-22 Kimberly-Clark Worldwide, Inc. Composite cleaning products having shape resilient layer
US7524399B2 (en) * 2004-12-22 2009-04-28 Kimberly-Clark Worldwide, Inc. Multiple ply tissue products having enhanced interply liquid capacity
US7676088B2 (en) * 2004-12-23 2010-03-09 Asml Netherlands B.V. Imprint lithography
US20070044928A1 (en) * 2005-08-31 2007-03-01 Kimberly-Clark Worldwide, Inc. Rolled bath tissue product for children
US8418879B2 (en) * 2005-08-31 2013-04-16 Kimberly-Clark Worldwide, Inc. Pop-up bath tissue product
CN100334298C (zh) * 2005-10-14 2007-08-29 山东轻工业学院 棉秆烧碱蒽醌法造纸蒸煮液
US7972474B2 (en) * 2005-12-13 2011-07-05 Kimberly-Clark Worldwide, Inc. Tissue products having enhanced cross-machine directional properties
US8778386B2 (en) * 2005-12-13 2014-07-15 Kimberly-Clark Worldwide, Inc. Anti-microbial substrates with peroxide treatment
CN101356314B (zh) 2005-12-15 2012-07-04 陶氏环球技术有限责任公司 含添加剂组合物的改进纤维素制品
US7820010B2 (en) * 2005-12-15 2010-10-26 Kimberly-Clark Worldwide, Inc. Treated tissue products having increased strength
US8444811B2 (en) * 2005-12-15 2013-05-21 Kimberly-Clark Worldwide, Inc. Process for increasing the basis weight of sheet materials
US7842163B2 (en) * 2005-12-15 2010-11-30 Kimberly-Clark Worldwide, Inc. Embossed tissue products
US8282776B2 (en) * 2005-12-15 2012-10-09 Kimberly-Clark Worldwide, Inc. Wiping product having enhanced oil absorbency
US7837831B2 (en) * 2005-12-15 2010-11-23 Kimberly-Clark Worldwide, Inc. Tissue products containing a polymer dispersion
US20070141936A1 (en) * 2005-12-15 2007-06-21 Bunyard William C Dispersible wet wipes with improved dispensing
US7883604B2 (en) * 2005-12-15 2011-02-08 Kimberly-Clark Worldwide, Inc. Creping process and products made therefrom
US7879191B2 (en) * 2005-12-15 2011-02-01 Kimberly-Clark Worldwide, Inc. Wiping products having enhanced cleaning abilities
US7879189B2 (en) * 2005-12-15 2011-02-01 Kimberly-Clark Worldwide, Inc. Additive compositions for treating various base sheets
US7879188B2 (en) * 2005-12-15 2011-02-01 Kimberly-Clark Worldwide, Inc. Additive compositions for treating various base sheets
US20070137811A1 (en) * 2005-12-15 2007-06-21 Kimberly-Clark Worldwide, Inc. Premoistened tissue products
US7807023B2 (en) * 2005-12-15 2010-10-05 Kimberly-Clark Worldwide, Inc. Process for increasing the basis weight of sheet materials
US7837832B2 (en) 2005-12-15 2010-11-23 Dow Global Technologies, Inc. Additive compositions for treating various base sheets
US8785531B2 (en) 2006-07-06 2014-07-22 Dow Global Technologies Llc Dispersions of olefin block copolymers
US8916640B2 (en) * 2006-07-06 2014-12-23 Dow Global Technologies Llc Blended polyolefin dispersions
US8476326B2 (en) * 2006-09-22 2013-07-02 Dow Global Technologies Llc Fibrillated polyolefin foam
US7785443B2 (en) * 2006-12-07 2010-08-31 Kimberly-Clark Worldwide, Inc. Process for producing tissue products
US7588662B2 (en) 2007-03-22 2009-09-15 Kimberly-Clark Worldwide, Inc. Tissue products containing non-fibrous polymeric surface structures and a topically-applied softening composition
US8058194B2 (en) * 2007-07-31 2011-11-15 Kimberly-Clark Worldwide, Inc. Conductive webs
US8697934B2 (en) * 2007-07-31 2014-04-15 Kimberly-Clark Worldwide, Inc. Sensor products using conductive webs
US8372766B2 (en) * 2007-07-31 2013-02-12 Kimberly-Clark Worldwide, Inc. Conductive webs
US20090057169A1 (en) * 2007-08-31 2009-03-05 Benjamin Joseph Kruchoski Spindle and Spindle Attachments for Coreless and Flexible Core Rolled Tissue Products
BRPI0815822A2 (pt) * 2007-08-31 2017-05-16 Biojoule Ltd lignina e outros produtos a partir de material de planta, e métodos e composições para estes.
US20090057456A1 (en) * 2007-08-31 2009-03-05 Thomas Gerard Shannon Rolled Tissue Product Having a Flexible Core
CN101878250B (zh) 2007-09-28 2014-07-02 陶氏环球技术有限责任公司 较高结晶度烯烃分散体
EP2212389B1 (fr) 2007-11-15 2017-04-19 Dow Global Technologies LLC Composition de revêtement, article enduit et procédé de formation de tels articles
EP2568023B1 (fr) 2007-11-15 2014-06-25 Dow Global Technologies LLC Article revêtu, et procédé pour former de tels articles
AU2009252769B2 (en) * 2008-05-29 2014-03-20 Kimberly-Clark Worldwide, Inc. Conductive webs containing electrical pathways and method for making same
US8940323B2 (en) 2008-05-30 2015-01-27 Kimberly-Clark Worldwide, Inc. Tissue products having a cooling sensation when contacted with skin
JP2011529091A (ja) * 2008-07-28 2011-12-01 チャイナ フューエル バイオエナジー テクノロジー デベロップメント コーポレイティッド リミテッド セルロースバイオマスの直接液化方法
US8172982B2 (en) * 2008-12-22 2012-05-08 Kimberly-Clark Worldwide, Inc. Conductive webs and process for making same
US8105463B2 (en) 2009-03-20 2012-01-31 Kimberly-Clark Worldwide, Inc. Creped tissue sheets treated with an additive composition according to a pattern
US8795717B2 (en) 2009-11-20 2014-08-05 Kimberly-Clark Worldwide, Inc. Tissue products including a temperature change composition containing phase change components within a non-interfering molecular scaffold
US9260464B2 (en) 2009-09-25 2016-02-16 Michael A. Lake Process for recovering lignin
US9879119B2 (en) 2009-09-25 2018-01-30 Michael A. Lake Lignin product and process for making same
US8480852B2 (en) 2009-11-20 2013-07-09 Kimberly-Clark Worldwide, Inc. Cooling substrates with hydrophilic containment layer and method of making
US9181465B2 (en) * 2009-11-20 2015-11-10 Kimberly-Clark Worldwide, Inc. Temperature change compositions and tissue products providing a cooling sensation
EP2567023B1 (fr) 2010-05-04 2014-10-15 Bahia Specialty Cellulose SA Méthode et système pour la production de pâte à haute teneur en cellulose alpha
FI123086B (fi) * 2011-02-28 2012-10-31 Aalto Korkeakoulusaeaetioe Menetelmä kemikaalien talteenottamiseksi
US20140121359A1 (en) * 2012-10-30 2014-05-01 Blackburn John C Ph-induced fractionation processes for recovery of lignin
CN103015243B (zh) * 2012-12-25 2015-01-14 济南圣泉集团股份有限公司 一种从生物质原料中提取纤维素并制备生物碳的工艺
CN103074790B (zh) * 2012-12-25 2015-01-14 济南圣泉集团股份有限公司 一种生物质原料的综合利用工艺
CN103088686B (zh) * 2012-12-25 2015-06-17 济南圣泉集团股份有限公司 一种由木质纤维素生物质制备纸浆并联产生物碳的工艺
US9289520B2 (en) 2014-02-27 2016-03-22 Kimberly-Clark Worldwide, Inc. Method and system to clean microorganisms without chemicals
FI127601B (en) * 2014-04-03 2018-10-15 Andritz Oy Method for handling spent wash solution of a lignin-recovery process
FI125891B (en) * 2014-08-14 2016-03-31 Scitech Service Oy Process for the treatment of cellulose and alkali solutions obtained from the treatment of cellulose
CN104746373A (zh) * 2015-03-05 2015-07-01 新疆国力源环保科技有限公司 构树本色半化学机械浆的制备工艺
MX2018004722A (es) 2015-11-03 2018-07-06 Kimberly Clark Co TRAMA COMPUESTA DE ESPUMA CON BAJO COLAPSO EN HíšMEDO.
AU2016350780B2 (en) 2015-11-03 2020-09-10 Kimberly-Clark Worldwide, Inc. Paper tissue with high bulk and low lint
CN106149435B (zh) * 2016-07-07 2017-11-10 湖北工业大学 构树全树化学法制浆方法
FI128045B (en) 2016-11-17 2019-08-30 Upm Kymmene Corp Process and apparatus for recovering chemicals from an alkaline lignin material
US11091875B1 (en) 2016-11-30 2021-08-17 Chemstone, Inc. Dual surfactant digester additive composition and a method for enhancing the pulping of wood chips using the same
US11033867B2 (en) 2017-09-27 2021-06-15 Sustainable Fiber Technologies, LLC Aqueous lignin and hemicellulose dispersion
US11066588B2 (en) 2017-11-21 2021-07-20 Sustainable Fiber Technologies, LLC Deicing composition comprising lignocellulosic byproducts
US11091697B2 (en) 2017-11-29 2021-08-17 Sustainable Fiber Technologies, LLC Dust suppressant and soil stabilization composition comprising lignocellulosic byproducts
EP4127290A4 (fr) 2020-03-31 2024-04-03 Kimberly-Clark Worldwide, Inc. Procédé et appareil de production d'un substrat en zones et/ou en couches
US11572474B2 (en) 2020-05-22 2023-02-07 Sustainable Fiber Technologies, LLC Compositions comprising lignocellulosic byproducts for tire ballasts and associated methods
CN114989449B (zh) * 2022-06-21 2023-04-18 南京林业大学 一种木质素-蒽醌电解质材料及其制备方法和应用
WO2025216985A1 (fr) 2024-04-10 2025-10-16 Dow Global Technologies Llc Auxiliaire de lessiveur pour le procédé kraft

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE347904A (fr) *
DE1046466B (de) * 1954-06-24 1958-12-11 Sterling Drug Inc Verfahren zur Rueckgewinnung von Natronkochlauge aus beim Aufschluss von Holz anfallender Ablauge
US3490990A (en) * 1966-12-30 1970-01-20 Owens Illinois Inc Digestion of lignocellulosic materials with an organomercaptan and a hydrotrope
JPS5510716B2 (fr) * 1971-11-02 1980-03-18
FI53728C (fi) * 1974-03-12 1978-07-10 Ahlstroem Oy Foerfarande foer aotervinning av kemikalier ur avlutar fraon sulfatcellulosakok och avfallsvatten fraon blekning
ZA762995B (en) * 1976-05-19 1977-07-27 Sappi Ltd Improvements relating to recovery of chemicals
ZA773044B (en) * 1976-06-02 1978-04-26 Australian Paper Manufacturers Improvements in pulping processes
GB1526621A (en) * 1977-03-09 1978-09-27 Canadian Ind Delignification process
US4619733A (en) * 1983-11-30 1986-10-28 Kooi Boon Lam Pollution free pulping process using recycled wash effluent from multiple bleach stages to remove black liquor and recovering sodium hydroxide from the black liquor
CH686682A5 (de) * 1992-05-05 1996-05-31 Granit Sa Herstellung von Zellstoff nach dem S.A.P.-Verfahren.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9322492A1 *

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FI115845B (fi) 2005-07-29
FI940013A0 (fi) 1994-01-03
ATE162245T1 (de) 1998-01-15
NZ251963A (en) 1996-12-20
AU4038193A (en) 1993-11-29
DK0593743T3 (da) 1998-09-14
EP0593743B1 (fr) 1998-01-14
WO1993022492A1 (fr) 1993-11-11
DE59307986D1 (de) 1998-02-19
JPH06509850A (ja) 1994-11-02
CA2112802C (fr) 2005-07-19
CA2112802A1 (fr) 1993-11-11
ES2114607T3 (es) 1998-06-01
BR9305510A (pt) 1995-03-28
JP2709192B2 (ja) 1998-02-04
FI940013A7 (fi) 1994-01-03
CH686682A5 (de) 1996-05-31
US5595628A (en) 1997-01-21
AU663784B2 (en) 1995-10-19

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