GB386305A - Improvements in or relating to the method of and apparatus for treating fibrous material to form pulp - Google Patents

Improvements in or relating to the method of and apparatus for treating fibrous material to form pulp

Info

Publication number
GB386305A
GB386305A GB10517/31A GB1051731A GB386305A GB 386305 A GB386305 A GB 386305A GB 10517/31 A GB10517/31 A GB 10517/31A GB 1051731 A GB1051731 A GB 1051731A GB 386305 A GB386305 A GB 386305A
Authority
GB
United Kingdom
Prior art keywords
chips
pipes
leaching
tank
liquor
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
GB10517/31A
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.)
MEAD PAPERBOARD CORP
Original Assignee
MEAD PAPERBOARD CORP
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 MEAD PAPERBOARD CORP filed Critical MEAD PAPERBOARD CORP
Publication of GB386305A publication Critical patent/GB386305A/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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes

Landscapes

  • Paper (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)

Abstract

Chestnut or other deciduous wood chips are leached to extract tannic acid prior to their being pulped. Logs &c. are fed to a chipper 10 and the chips passed by a conveyer 13 comprising a trough 14 and chain 15 with drags 18 and a similar conveyer 20 through <PICT:0386305/IV/1> shoots 28 to leaching tanks 30, the leaching liquor preferably passing through the vessels in contra-flow. The tanks 30 may be open at the top and have an inner perforate bottom 32 and are supplied with water or leach liquor discharged from a previous tank through pipes 33 and with steam through pipes 34, the tannin containing liquor being drained through pipes 35 and the chips being expelled through pipes 47 with the aid of stirring arms 44 each rotated by and sliding on a shaft 40 and having inclined blades &c. 45 directing the chips outwardly. The leaching liquor from the last tank 30 passes to a storage tank supplying evaporators for concentration and extraction of tannic content. It is stated in an example that an open tank is used for leaching for about 34-42 hours at 160-212 DEG F. using about 1800 gallons of water per " long cord " of chestnut chips giving an extract of " purity of at least 70 as measured on the arbitrary scale used in the industry."
GB10517/31A 1930-04-10 1931-04-09 Improvements in or relating to the method of and apparatus for treating fibrous material to form pulp Expired GB386305A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US443213A US1852158A (en) 1930-04-10 1930-04-10 Paper manufacture

Publications (1)

Publication Number Publication Date
GB386305A true GB386305A (en) 1933-01-12

Family

ID=23759857

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10517/31A Expired GB386305A (en) 1930-04-10 1931-04-09 Improvements in or relating to the method of and apparatus for treating fibrous material to form pulp

Country Status (2)

Country Link
US (1) US1852158A (en)
GB (1) GB386305A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010053464A1 (en) * 2008-10-14 2010-05-14 Mysteckyj Anatolij Lvovych Method for producing a fibrous semifinished product from cellulose-containing materials and line for implementing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010053464A1 (en) * 2008-10-14 2010-05-14 Mysteckyj Anatolij Lvovych Method for producing a fibrous semifinished product from cellulose-containing materials and line for implementing same

Also Published As

Publication number Publication date
US1852158A (en) 1932-04-05

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