ATE305376T1 - METHOD FOR PRODUCING CELLULOSE FIBER ASSEMBLY - Google Patents

METHOD FOR PRODUCING CELLULOSE FIBER ASSEMBLY

Info

Publication number
ATE305376T1
ATE305376T1 AT99200258T AT99200258T ATE305376T1 AT E305376 T1 ATE305376 T1 AT E305376T1 AT 99200258 T AT99200258 T AT 99200258T AT 99200258 T AT99200258 T AT 99200258T AT E305376 T1 ATE305376 T1 AT E305376T1
Authority
AT
Austria
Prior art keywords
softening
stage
cellulose fiber
fiber assembly
hydrothermolysis
Prior art date
Application number
AT99200258T
Other languages
German (de)
Inventor
Hendrik Adriaan Cor Groeneveld
Jeroen Frederik Arthur Belle
Wilhelmus Antonius Hend Maasen
Original Assignee
Plato Internat Technology B V
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 Plato Internat Technology B V filed Critical Plato Internat Technology B V
Priority claimed from EP19990200258 external-priority patent/EP1023977B1/en
Application granted granted Critical
Publication of ATE305376T1 publication Critical patent/ATE305376T1/en

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  • Processing Of Solid Wastes (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Paper (AREA)

Abstract

A process for the preparation of a cellulosic fibrous aggregate, comprising a softening (hydrothermolysis) stage and a curing stage, whereby in the softening stage a section of cellulosic fibrous material is exposed to the action of a liquid aqueous softening agent at an elevated temperature and at a pressure of at least the equilibrium vapour pressure of the softening agent at the operating temperature, in which at least part of an aqueous stream, contaminated with organic material, obtained as effluent stream from the zone wherein the softening has been effected, is subjected to an anaerobic purification treatment and at least part of the resulting purified aqueous stream is recycled to the hydrothermolysis stage.
AT99200258T 1999-01-28 1999-01-28 METHOD FOR PRODUCING CELLULOSE FIBER ASSEMBLY ATE305376T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19990200258 EP1023977B1 (en) 1999-01-28 1999-01-28 Process for preparing cellulosic fibrous aggregates

Publications (1)

Publication Number Publication Date
ATE305376T1 true ATE305376T1 (en) 2005-10-15

Family

ID=8239846

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99200258T ATE305376T1 (en) 1999-01-28 1999-01-28 METHOD FOR PRODUCING CELLULOSE FIBER ASSEMBLY

Country Status (4)

Country Link
AT (1) ATE305376T1 (en)
CA (1) CA2295268A1 (en)
DE (1) DE69927471D1 (en)
NZ (1) NZ502471A (en)

Also Published As

Publication number Publication date
DE69927471D1 (en) 2006-02-09
NZ502471A (en) 2001-08-31
CA2295268A1 (en) 2000-07-28

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Legal Events

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