GB678761A - Digestion of ligno-cellulosic materials - Google Patents

Digestion of ligno-cellulosic materials

Info

Publication number
GB678761A
GB678761A GB11751/50A GB1175150A GB678761A GB 678761 A GB678761 A GB 678761A GB 11751/50 A GB11751/50 A GB 11751/50A GB 1175150 A GB1175150 A GB 1175150A GB 678761 A GB678761 A GB 678761A
Authority
GB
United Kingdom
Prior art keywords
steam
fed
particles
paper
outlet
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
Application number
GB11751/50A
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.)
PAPER AND IND APPLIANCES Inc
Original Assignee
PAPER AND IND APPLIANCES Inc
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 PAPER AND IND APPLIANCES Inc filed Critical PAPER AND IND APPLIANCES Inc
Publication of GB678761A publication Critical patent/GB678761A/en
Expired 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
    • D21C7/00—Digesters
    • D21C7/08—Discharge devices

Landscapes

  • Paper (AREA)

Abstract

678,761. Disintegrating wood chips &c. for paper-making. PAPER & INDUSTRIAL APPLIANCES, Inc. May 11, 1950 [July 26, 1949], No. 11751/50. Class 96. Wood chips &c. fed into a hopper 11 are screw-fed to form a steam-pressure-tight plug 14 as they enter a steam treatment zone 15 in which they are softened and expanded as they are screw-fed to a vertical chamber 22 where they fall into a zone of particles agitated by an impeller 27 and are reduced by impacting against each other and against a shoulder 22a in the wall of the chamber 22, the reduced particles passing out by centrifugal force through an outlet 29 the size of which is adjusted by a handle 67 which is locked in position by a tightening handle 70. The outlet 29 which is kept clear by the impeller blades opens to a tapered passage 30 so that the steam pressure gradually falls before the particles enter a water-saturating tower and are immersed and mixed in a water-bath before entering a refiner prior to sheet-forming. Steam is supplied at 17, and digesting chemicals may be supplied at 18. Specification 555,966 is referred to.
GB11751/50A 1949-07-26 1950-05-11 Digestion of ligno-cellulosic materials Expired GB678761A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US106904A US2616802A (en) 1949-07-26 1949-07-26 Fiberizing lignocellulose steamed under pressure and apparatus

Publications (1)

Publication Number Publication Date
GB678761A true GB678761A (en) 1952-09-10

Family

ID=22313884

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11751/50A Expired GB678761A (en) 1949-07-26 1950-05-11 Digestion of ligno-cellulosic materials

Country Status (6)

Country Link
US (1) US2616802A (en)
BE (1) BE496868A (en)
DE (1) DE847685C (en)
FR (1) FR1022903A (en)
GB (1) GB678761A (en)
NL (1) NL84387C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1912940A1 (en) * 1968-04-02 1970-02-26 Defibrator Aktiebolaget Process for making mechanical pulp

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US2771361A (en) * 1951-12-07 1956-11-20 Process Evaluation Devel Defibration processes
US2716927A (en) * 1953-06-03 1955-09-06 Sylvester C Sullivan Fourdrinier
DE1034967B (en) * 1954-01-07 1958-07-24 Der Maschinenfabrik Von Theodo Continuous process and device for the production of semi-pulp from wood
US2893909A (en) * 1954-06-09 1959-07-07 Bauer Bros Co Combined digestion and refining of paper pulp
US2882967A (en) * 1954-10-06 1959-04-21 Pandia Inc Digesting apparatus discharge valve assembly
US2948336A (en) * 1955-06-06 1960-08-09 Pandia Inc Continuous digester
US2953202A (en) * 1955-07-15 1960-09-20 Pandia Inc Continuous digester
US2963086A (en) * 1955-09-22 1960-12-06 Pandia Inc Paper machinery
US2943012A (en) * 1955-12-01 1960-06-28 Int Basic Economy Corp Method and apparatus for fiberizing fibrous material
US2803540A (en) * 1956-03-06 1957-08-20 Condi Engineering Corp Wood chip digestion
US2957795A (en) * 1956-06-07 1960-10-25 Bolton John W & Sons Inc Process for making paper pulp
US2902090A (en) * 1956-07-25 1959-09-01 Jean E Arguillere Apparatus for defibrating hard wood
US2996421A (en) * 1957-12-18 1961-08-15 Sprout Waldron & Co Inc Pulp manufacture
US2993537A (en) * 1957-12-18 1961-07-25 Sprout Waldron & Co Inc Pulp manufacture
NL246956A (en) * 1959-02-26
US3130114A (en) * 1960-11-19 1964-04-21 Statni Drevarsky Vyzk Ustav Process of manufacturing fibreboards and pressings from lignocellulose material
US3434920A (en) * 1965-10-07 1969-03-25 Frank B K Green Apparatus for continuous digesting
US3617433A (en) * 1968-05-15 1971-11-02 Douglas G Sutherland Defibering discharger for continuous digesters
US4039373A (en) * 1975-12-31 1977-08-02 American Defibrator, Inc. Static discharge device and method for fiber discharge from a pressurized digester
FI81136C (en) * 1987-11-11 1990-09-10 Ahlstroem Oy Method and apparatus for treating pulp
US5262003A (en) * 1991-09-18 1993-11-16 The Black Clawson Company Method and system for defibering paper making materials
US20080277082A1 (en) * 2007-05-07 2008-11-13 Andritz Inc. High pressure compressor and steam explosion pulping method
US8057639B2 (en) 2008-02-28 2011-11-15 Andritz Inc. System and method for preextraction of hemicellulose through using a continuous prehydrolysis and steam explosion pretreatment process
MX2015002960A (en) 2012-09-19 2015-06-02 Andritz Inc Method and apparatus for adding steam for a steam explosion pretreatment process.
US8877012B2 (en) 2012-10-24 2014-11-04 Andritz Inc. Piping system from reactor to separator and method to control process flow
CN105258454A (en) * 2015-10-16 2016-01-20 北京神雾环境能源科技集团股份有限公司 Drying method for lignite
SE543000C2 (en) 2018-06-26 2020-09-22 Valmet Oy Method and system for discharging hydrothermally treated lignocellulosic material

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US369836A (en) * 1887-09-13 blackman
US44989A (en) * 1864-11-08 Improvement in ore-crushers
US88710A (en) * 1869-04-06 Improvement in grain-drills
US548727A (en) * 1895-10-29 Max spieldiener
US1655618A (en) * 1928-01-10 Assighoe
US848484A (en) * 1906-09-06 1907-03-26 Thomas Newnham Apparatus for extracting by-products from wood.
US1123033A (en) * 1912-11-27 1914-12-29 William H Stobie Apparatus for disintegrating pulp.
US1127615A (en) * 1914-05-05 1915-02-09 Frank B Gilligan Pulp agitator and refiner.
US1293654A (en) * 1915-08-24 1919-02-11 Adams Mining Machinery Corp Process and apparatus for reducing coal.
US1383881A (en) * 1919-03-25 1921-07-05 Thomas Joseph Ingram Flotation apparatus
US1450600A (en) * 1920-09-09 1923-04-03 Kuttroff Pickhardt & Co Inc Paper made from kapok fiber
FR551013A (en) * 1922-05-05 1923-03-26 Improvements in the manufacture of cellulose
US1850832A (en) * 1925-06-13 1932-03-22 Insulite Co Process of separating wood fibers
DE493573C (en) * 1928-01-31 1930-03-10 Karl Rieth Basic work with a smooth work surface for paper towel holders or the like.
US1922313A (en) * 1931-06-27 1933-08-15 Masonite Corp Process and apparatus for disintegration of material
NL44553C (en) * 1933-09-21
US2063367A (en) * 1934-10-24 1936-12-08 Roza Corp De Extracting method and apparatus
US2129789A (en) * 1936-04-03 1938-09-13 Charles R Seaborne Beater for paper stock
US2184248A (en) * 1936-08-06 1939-12-19 Extractol Process Ltd Method and mechanism for continuously forming liquid-impervious plugs in extraction units
US2289934A (en) * 1939-12-04 1942-07-14 Baker Perkins Co Inc Agitating and pumping mechanism
US2388592A (en) * 1940-03-21 1945-11-06 Defibrator Ab Process of making ligno-cellulose pulps from straw
US2422522A (en) * 1940-08-07 1947-06-17 Paper And Ind Appliances Inc Method for the production of pulp from cellulosic material
US2359543A (en) * 1940-09-24 1944-10-03 Kamyr Ab Apparatus for continuous digestion of fibrous material
US2396587A (en) * 1941-03-20 1946-03-12 American Defibrator Apparatus for producing pulp
US2394182A (en) * 1941-11-20 1946-02-05 Clyde Paper Company Ltd Paper strock disintegrator
US2342225A (en) * 1941-12-30 1944-02-22 Auxilius P Schnyder Paper pulp preparation
GB591921A (en) * 1944-04-08 1947-09-02 Inst Gas Technology Improvements in or relating to apparatus for and method of comminuting a permeable material
US2400544A (en) * 1944-10-24 1946-05-21 Western Union Telegraph Co Conductive paper
US2435335A (en) * 1946-07-19 1948-02-03 Willard H Andrews Hand finishing tool
HUT35926A (en) * 1983-06-08 1985-08-28 Du Pont Compositions for treating plant diseases and process for producing substituted benzopenta-thiepine derivatives utilizable as active agents

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1912940A1 (en) * 1968-04-02 1970-02-26 Defibrator Aktiebolaget Process for making mechanical pulp

Also Published As

Publication number Publication date
BE496868A (en)
DE847685C (en) 1952-08-28
US2616802A (en) 1952-11-04
FR1022903A (en) 1953-03-11
NL84387C (en)

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