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Class Information
Number: 162/46
Name: Paper making and fiber liberation > Processes of chemical liberation, recovery or purification of natural cellulose or fibrous material > With regeneration, reclamation, reuse, recycling or destruction of digestion fluid > Recirculation (includes separation from fibers) > Steam only
Description: Processes in which the fluid being circulated consists of steam.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6887345 |
Process and device for evaporating liquids, for example black liquor from cellulose cooking, which contain solid and dissolved substances |
May. 3, 2005 |
| 6761799 |
Method and arrangement for combusting black liquor |
Jul. 13, 2004 |
| 6464826 |
Method for producing and treating wood fiber |
Oct. 15, 2002 |
| 6383342 |
Cluster rule compliance with reduced steam consumption |
May. 7, 2002 |
| 6258206 |
Process for purifying condensate while evaporating waste liquors |
Jul. 10, 2001 |
| 6217711 |
Method of treating condensates |
Apr. 17, 2001 |
| 5830314 |
Cleaning condensates from multi-effect evaporator of cellulose pulp waste liquors |
Nov. 3, 1998 |
| 5382321 |
Process for the concentration of spent liquors |
Jan. 17, 1995 |
| 5186726 |
Suspension deaerating process |
Feb. 16, 1993 |
| 5089087 |
Make-up liquor and black liquor evaporating process during pulp production |
Feb. 18, 1992 |
| 5034099 |
Apparatus for the manufacture of fiber pulp using a preheater, defibrator and horizontal separator |
Jul. 23, 1991 |
| 4963227 |
System and apparatus for recovery of turpentine from thermomechanical pulping process |
Oct. 16, 1990 |
| 4954221 |
Apparatus for feeding lignocellulose-containing material through a steam screen into a refiner |
Sep. 4, 1990 |
| 4944840 |
Method and apparatus for evaporating waste liquor produced when cooking fibrous material containing cellulose |
Jul. 31, 1990 |
| 4925527 |
Method for the recovery of turpentine and heat in a refiner pulping process |
May. 15, 1990 |
| 4857146 |
Process for increasing the solids content of black liquor at its recovery in a sulfate pulping process |
Aug. 15, 1989 |
| 4789428 |
Method for evaporation of spent liquor |
Dec. 6, 1988 |
| 4755258 |
Method and apparatus for deactivating spent liquor |
Jul. 5, 1988 |
| 4710268 |
Method for regulating the pressure of blow-through discharge steam from a reboiler of process steam produced during production of mechanical pulp |
Dec. 1, 1987 |
| 4692214 |
Apparatus for producing mechanical pulp with a refiner having its drive shaft connected to a steam turbine output shaft |
Sep. 8, 1987 |
| 4668341 |
Method and apparatus for producing mechanical pulp with a steam turbine driven refiner |
May. 26, 1987 |
| 4537655 |
Process for producing and flash drying high yield mechanical cellulose pulp with steam and condensate recycle |
Aug. 27, 1985 |
| 4401510 |
Process for heating up wood chips prior to steaming and pulping |
Aug. 30, 1983 |
| 4326913 |
Method and apparatus in defibration |
Apr. 27, 1982 |
| 4244778 |
Process for the chemical refining of cellulose pulp |
Jan. 13, 1981 |
| 4235665 |
Method and apparatus for producing fiber pulp in a steam pressurized grinding system |
Nov. 25, 1980 |
| 4207140 |
Method of producing groundwood pulp |
Jun. 10, 1980 |
| 4163525 |
Device for evacuating blow-back steam in pulp refining apparatus |
Aug. 7, 1979 |
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