SE9901220L - Input of finely divided fibrous material into a pulp cooking process - Google Patents

Input of finely divided fibrous material into a pulp cooking process

Info

Publication number
SE9901220L
SE9901220L SE9901220A SE9901220A SE9901220L SE 9901220 L SE9901220 L SE 9901220L SE 9901220 A SE9901220 A SE 9901220A SE 9901220 A SE9901220 A SE 9901220A SE 9901220 L SE9901220 L SE 9901220L
Authority
SE
Sweden
Prior art keywords
bin
chips
transition
hopper
slot outlet
Prior art date
Application number
SE9901220A
Other languages
Swedish (sv)
Other versions
SE9901220D0 (en
Inventor
J R Prough
Jerry R Johanson
Original Assignee
Ahlstrom Machinery 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
Priority claimed from US09/055,408 external-priority patent/US6199299B1/en
Application filed by Ahlstrom Machinery Inc filed Critical Ahlstrom Machinery Inc
Publication of SE9901220D0 publication Critical patent/SE9901220D0/en
Publication of SE9901220L publication Critical patent/SE9901220L/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
    • 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
    • D21C7/06—Feeding devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

In a chisel-type convergence for a chip bin in a wood chip pulping process and system (or other bin or hopper), an improvement in uniformity of discharge of the chips from a chips bin or the like is provided, including a substantially uniform flow velocity distribution along the slot outlet of the bin or hopper. The bin may include a conventional hollow substantially right circular cylindrical first, upper, body portion, a second, hollow transition, portion connected to the bottom of the first portion, and a third transition portion, below the second portion and above a metering device, such as a metering screw or a star-feeder. The third transition operates less than full of chips, and provides relief from chip compaction. The third transition portion may include stationary or movable baffles, and/or a metering screw may be provided which can pivot downwardly in order to minimize or eliminate the thrusting force against the bin or upper chips to facilitate discharge. Broadly a bin or hopper (preferably with one dimensional convergence and a slot outlet) is provided that has a metering screw substantially directly undeneath the slot outlet, and has a varying average pitch, shaft diameter, and flight diameter over the length thereof.
SE9901220A 1998-04-06 1999-04-06 Input of finely divided fibrous material into a pulp cooking process SE9901220L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US8082498P 1998-04-06 1998-04-06
US09/055,408 US6199299B1 (en) 1998-04-06 1998-04-06 Feeding of comminuted fibrous material to a pulping process

Publications (2)

Publication Number Publication Date
SE9901220D0 SE9901220D0 (en) 1999-04-06
SE9901220L true SE9901220L (en) 1999-10-07

Family

ID=26734186

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9901220A SE9901220L (en) 1998-04-06 1999-04-06 Input of finely divided fibrous material into a pulp cooking process

Country Status (4)

Country Link
JP (1) JP2000008286A (en)
CA (1) CA2268338A1 (en)
FI (1) FI990750A7 (en)
SE (1) SE9901220L (en)

Also Published As

Publication number Publication date
SE9901220D0 (en) 1999-04-06
FI990750L (en) 1999-10-07
CA2268338A1 (en) 1999-10-06
FI990750A0 (en) 1999-04-06
JP2000008286A (en) 2000-01-11
FI990750A7 (en) 1999-10-07

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Legal Events

Date Code Title Description
NAV Patent application has lapsed