[go: up one dir, main page]

US3887426A - Process for producing cellulose pulp by digestion with a diol or triol solvent and an aniline or phenol salt - Google Patents

Process for producing cellulose pulp by digestion with a diol or triol solvent and an aniline or phenol salt Download PDF

Info

Publication number
US3887426A
US3887426A US341508A US34150873A US3887426A US 3887426 A US3887426 A US 3887426A US 341508 A US341508 A US 341508A US 34150873 A US34150873 A US 34150873A US 3887426 A US3887426 A US 3887426A
Authority
US
United States
Prior art keywords
solution
digester
lignin
solvent
cellulose pulp
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.)
Expired - Lifetime
Application number
US341508A
Other languages
English (en)
Inventor
Andre Fogarassy
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.)
BREV IND ET CHIMIQUES SOC GEN
GENERALE DE BREVETS INDUSTRIELS ET CHIMIQUES Ste
Original Assignee
BREV IND ET CHIMIQUES SOC GEN
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
Priority to BE756225D priority Critical patent/BE756225A/fr
Priority to CH1452269A priority patent/CH498244A/fr
Priority to CH1819769A priority patent/CH512635A/fr
Priority to AT840870A priority patent/AT300544B/de
Priority to LU61717D priority patent/LU61717A1/xx
Priority to CA093,735A priority patent/CA977505A/en
Priority to DE19702046944 priority patent/DE2046944A1/de
Priority to FR707034610A priority patent/FR2063171B1/fr
Priority to GB4588170A priority patent/GB1328674A/en
Application filed by BREV IND ET CHIMIQUES SOC GEN filed Critical BREV IND ET CHIMIQUES SOC GEN
Priority to US341508A priority patent/US3887426A/en
Application granted granted Critical
Publication of US3887426A publication Critical patent/US3887426A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the digestion produces no malodorous effluent gases, and therefore is no atmospheric polution.
  • monohydroxyl alcohols such as octyl alcohol and lauric alcohol glycerol which is a saturated aliphatic triol ethylene glycol which is a saturated aliphatic diol anisole benzyl alcohol diphenyl diphenyl oxide ethers and esters with melting points below 100C, or mixtures of these solvents.
  • reaction temperature is of the order of 160 to 190C.
  • the digestion products are removed from the reactor through a pipe 4 and filtered on a continuous filter 5.
  • the filtrate contains alkaline lignin in solution in glycol. This solution is fed through a pipe 6 into a mixer 17.
  • the cellulose pulp collected on the filter 5 is washed by a counter-current stream of water arriving through a pipe 18.
  • the effluent wash waters from the filter 5 are conveyed through a pipe 7 into a distillation column 8.
  • the head fraction from the column 8 is condensed, by means not shown, the resulting condensed water being recycled for washing the cellulose pulp, further water for washing arriving through the pipe 18 in the form of all or part of the water condensed in the condenser 3.
  • the condensate passes into a phase separator 37, which splits the condensate into two liquids, a supernatant phase, which consists of phenol, which is a byproduct of the reaction, and a subjacent liquid phase which consists of water.
  • the water flows out of the phase separator through a pipe 38.
  • Phenol-containing vapors produced during the digestion pass from the top of the digester into line 73, provided with valve 74, and thus to the heat exchanger 62.
  • the cellulose pulp After the cellulose pulp has been washed on the screen 51 in the digester 50, it is removed through an outlet 79, after which it can be bleached in the known way.
  • the digester 50 is now empty and can be used for digesting a further batch of wood chips. During the digestion of this further batch in the digester 50, the cellulose pulp is being washed in the digester 50, and so on, the cycles being repeated.
  • FIG. 3 shows only two digesters 50, 50', the system can of course if desired contain more than two digesters. The same quantity of reagent, organic solvent and wash water is reused again and again, apart from inevitable losses.
  • the yield was 3.6 g of crude cellulose pulp.
  • the solution is drained out of the digester, the cellulose pulp is washed in the digester, from which it is then removed, the lignin in the solvent is precipitated as calcium lignate, which is removed from the solvent and washed, the lignin in the wash waters is also precipitated and recovered as calcium lignate, the purified wash waters are distilled, giving distilled water and a tail fraction, which is combined with the recovered solvent, the wash waters before distillation passing through the heat exchanger for cooling the solution in the digester during the digestion.

Landscapes

  • Paper (AREA)
US341508A 1969-09-26 1973-03-15 Process for producing cellulose pulp by digestion with a diol or triol solvent and an aniline or phenol salt Expired - Lifetime US3887426A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
BE756225D BE756225A (fr) 1969-09-26 Procede de fabrication de pate cellulosique
CH1452269A CH498244A (fr) 1969-09-26 1969-09-26 Procédé de fabrication de pâte cellulosique
CH1819769A CH512635A (fr) 1969-09-26 1969-12-05 Procédé de fabrication de pâte cellulosique
AT840870A AT300544B (de) 1969-09-26 1970-09-17 Verfahren zur Herstellung von Cellulosepulpe
LU61717D LU61717A1 (fr) 1969-09-26 1970-09-18
CA093,735A CA977505A (en) 1969-09-26 1970-09-22 Process for producing cellulose pulp
DE19702046944 DE2046944A1 (de) 1969-09-26 1970-09-23 Verfahren zur Herstellung von Cellulosepulpe
FR707034610A FR2063171B1 (fr) 1969-09-26 1970-09-24
GB4588170A GB1328674A (en) 1969-09-26 1970-09-25 Manufacture of cellulose pulp
US341508A US3887426A (en) 1969-09-26 1973-03-15 Process for producing cellulose pulp by digestion with a diol or triol solvent and an aniline or phenol salt

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH1452269A CH498244A (fr) 1969-09-26 1969-09-26 Procédé de fabrication de pâte cellulosique
CH1819769A CH512635A (fr) 1969-09-26 1969-12-05 Procédé de fabrication de pâte cellulosique
US7467170A 1970-09-23 1970-09-23
US341508A US3887426A (en) 1969-09-26 1973-03-15 Process for producing cellulose pulp by digestion with a diol or triol solvent and an aniline or phenol salt

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US7467170A Continuation 1969-09-26 1970-09-23

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US56022975A Continuation 1969-09-26 1975-03-20

Publications (1)

Publication Number Publication Date
US3887426A true US3887426A (en) 1975-06-03

Family

ID=27429570

Family Applications (1)

Application Number Title Priority Date Filing Date
US341508A Expired - Lifetime US3887426A (en) 1969-09-26 1973-03-15 Process for producing cellulose pulp by digestion with a diol or triol solvent and an aniline or phenol salt

Country Status (9)

Country Link
US (1) US3887426A (fr)
AT (1) AT300544B (fr)
BE (1) BE756225A (fr)
CA (1) CA977505A (fr)
CH (2) CH498244A (fr)
DE (1) DE2046944A1 (fr)
FR (1) FR2063171B1 (fr)
GB (1) GB1328674A (fr)
LU (1) LU61717A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4017642A (en) * 1975-07-28 1977-04-12 George O. Orth Process of making food for ruminant animals from wood and/or woody products
US4100016A (en) * 1975-10-24 1978-07-11 C P Associates Limited Solvent pulping process
US4135967A (en) * 1969-09-26 1979-01-23 Societe Generale De Brevets Industriels Et Ohimiques Process for producing cellulose pulp by solid phase digestion
EP0041401A1 (fr) * 1980-06-02 1981-12-09 The Board Of Regents Of The University Of Washington Méthode et mixture pour la production de pâtes cellulosiques
US4594130A (en) * 1978-11-27 1986-06-10 Chang Pei Ching Pulping of lignocellulose with aqueous alcohol and alkaline earth metal salt catalyst
EP0763622A3 (fr) * 1990-08-17 1999-08-25 Alcell Technologies Inc. Procédé et appareil pour la mise en pâte en continu en milieu solvant et le lavage
US20190136448A1 (en) * 2017-11-08 2019-05-09 Earthrecycle Co., Ltd. Method for Separating Cellulose
US20210230375A1 (en) * 2018-11-07 2021-07-29 Earthrecycle Co., Ltd. Method for separating cellulose

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1902916A (en) * 1929-06-07 1933-03-28 Firm Dr Otto C Strecker Process for decomposing plant fiber material by cooking with phenolates
US2022654A (en) * 1933-03-07 1935-12-03 Dreyfus Henry Treatment of cellulosic materials
US2772968A (en) * 1951-06-06 1956-12-04 Research Corp Process of pulping cellulosic materials with triethylene glycol
US2886483A (en) * 1953-05-27 1959-05-12 Rosenblads Patenter Ab Heating system for cellulose digestion plants
US3255071A (en) * 1963-10-25 1966-06-07 Theodor N Kleinert Process for production of alkali cellulose in the absence of an aqueous liquid phase
US3305432A (en) * 1963-07-15 1967-02-21 William R Matthews Making of cellulose pulp
US3408268A (en) * 1966-10-27 1968-10-29 Jefferson Chem Co Inc Recovery of spent glycol by distillation in the presence of water
US3428520A (en) * 1965-08-12 1969-02-18 Scott Paper Co Pulping process with lignin recovery

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1902916A (en) * 1929-06-07 1933-03-28 Firm Dr Otto C Strecker Process for decomposing plant fiber material by cooking with phenolates
US2022654A (en) * 1933-03-07 1935-12-03 Dreyfus Henry Treatment of cellulosic materials
US2772968A (en) * 1951-06-06 1956-12-04 Research Corp Process of pulping cellulosic materials with triethylene glycol
US2886483A (en) * 1953-05-27 1959-05-12 Rosenblads Patenter Ab Heating system for cellulose digestion plants
US3305432A (en) * 1963-07-15 1967-02-21 William R Matthews Making of cellulose pulp
US3255071A (en) * 1963-10-25 1966-06-07 Theodor N Kleinert Process for production of alkali cellulose in the absence of an aqueous liquid phase
US3428520A (en) * 1965-08-12 1969-02-18 Scott Paper Co Pulping process with lignin recovery
US3408268A (en) * 1966-10-27 1968-10-29 Jefferson Chem Co Inc Recovery of spent glycol by distillation in the presence of water

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135967A (en) * 1969-09-26 1979-01-23 Societe Generale De Brevets Industriels Et Ohimiques Process for producing cellulose pulp by solid phase digestion
US4017642A (en) * 1975-07-28 1977-04-12 George O. Orth Process of making food for ruminant animals from wood and/or woody products
US4100016A (en) * 1975-10-24 1978-07-11 C P Associates Limited Solvent pulping process
US4594130A (en) * 1978-11-27 1986-06-10 Chang Pei Ching Pulping of lignocellulose with aqueous alcohol and alkaline earth metal salt catalyst
EP0041401A1 (fr) * 1980-06-02 1981-12-09 The Board Of Regents Of The University Of Washington Méthode et mixture pour la production de pâtes cellulosiques
EP0763622A3 (fr) * 1990-08-17 1999-08-25 Alcell Technologies Inc. Procédé et appareil pour la mise en pâte en continu en milieu solvant et le lavage
US20190136448A1 (en) * 2017-11-08 2019-05-09 Earthrecycle Co., Ltd. Method for Separating Cellulose
US10920372B2 (en) * 2017-11-08 2021-02-16 Earthrecycle Co., Ltd. Method for separating cellulose
US20210230375A1 (en) * 2018-11-07 2021-07-29 Earthrecycle Co., Ltd. Method for separating cellulose

Also Published As

Publication number Publication date
LU61717A1 (fr) 1971-01-18
FR2063171B1 (fr) 1973-01-12
DE2046944A1 (de) 1971-04-15
CA977505A (en) 1975-11-11
CH498244A (fr) 1970-10-31
GB1328674A (en) 1973-08-30
AT300544B (de) 1972-07-25
BE756225A (fr) 1971-03-01
CH512635A (fr) 1971-09-15
FR2063171A1 (fr) 1971-07-09

Similar Documents

Publication Publication Date Title
CA1167204A (fr) Methode de defibrage du bois et d'autres matieres lignocellulosiques
FI115845B (fi) Selluloosan valmistus sooda-antrakinoni-prosessilla (SAP) keittokemikaalit talteenottaen
US3585104A (en) Organosolv pulping and recovery process
US2057117A (en) Process of making vanillin
US4025423A (en) Process for removing monohydric and polyhydric phenols from waste water
JP3348387B2 (ja) ギ酸を添加した酢酸によるパルプの製法
RU2383675C1 (ru) Осуществляемый в каталитическом реакторе процесс производства промышленной целлюлозной массы, нативного лигнина и одноклеточного белка
EP0569526A1 (fr) Reduction en pate de matieres lignocellulosiques et recuperation des sous-produits qui en resultent
US2828297A (en) Process for the recovery of lignin from black liquors
AU676829B2 (en) Pulping of fibrous plant materials and recovery of resultantby-products
US3887426A (en) Process for producing cellulose pulp by digestion with a diol or triol solvent and an aniline or phenol salt
US4075248A (en) Production of syringealdehyde from hardwood waste pulping liquors
US4135967A (en) Process for producing cellulose pulp by solid phase digestion
US3607619A (en) Coking of black liquor in the absence of added free oxygen
US2859154A (en) Process for concentrating acetic acid and other lower fatty acids using entrainers for the acids
US3065263A (en) Process for the manufacture of levulinic acid
JPS58502155A (ja) 木材その他のリグノセルロ−ス製品の脱リグニン方法
CA1111694A (fr) Methode et installation de digestion continue de fibres vegetales
US3764462A (en) Recovery of furfural and methanol from spent pulping liquors
US1723800A (en) Utilization of sulphite cellulose waste liquor
EP0593744B1 (fr) Procede de recuperation de produits chimiques de cuisson a partir de la liqueur noire dans la fabrication de la cellulose selon le procede organosolver
US3133789A (en) Chemical recovery of waste liquors
CA1121384A (fr) Methode de preparation de la vanilline
US3675707A (en) Process and device for recovering sulfur dioxide from waste sulfite liquor
US1852011A (en) Method and apparatus for producing cellulose from lignified material