Method, system and refiner for refining of wood chips or pulp fibers

A refiner and pulping fiber technology, applied in pulp beating/refining methods, fiber raw materials, fiber raw material processing, etc., can solve problems such as obstruction and blockage of the outlet or outlet of the refiner, and achieve avoidance of evaporation, cost savings, easy to dissolve effect

Inactive Publication Date: 2012-02-15
VALMET TECH OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Furthermore, regardless of the carrier medium, the refining process according to the prior art suffers from the disadvantage that the chips or fibers carried by the carrier medium tend to delaminate and accumulate on the inner walls of the refiner housing while impeding or clogging the refining process. machine exit or exit

Method used

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  • Method, system and refiner for refining of wood chips or pulp fibers
  • Method, system and refiner for refining of wood chips or pulp fibers
  • Method, system and refiner for refining of wood chips or pulp fibers

Examples

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Embodiment Construction

[0033] For a better understanding of the basic principles of the invention, refer to figure 1 , this figure shows A TMP refining line according to the prior art of a paper mill. The TMP line comprises a preheating unit 10, a first refiner 22, a steam cyclone 23, a second refiner 32, a separator device (such as a stripping cyclone 7), an outflow duct, and a receiving vessel 12, The receiving vessel 12 is used to receive separated wood chip / pulp material from the stripping cyclone 7 . For the sake of clarity, the feeder unit preceding the refining stage is defined below as a Peri-type feeder, "Peri-type feeder" being the trade name for a feeder unit preceding the refining stage.

[0034] according to figure 1 The production of the refiner line shown can be regulated by controlling the rotational speed of the plug screw 1 which will have been preheated by the water unit 10 at a temperature of the mixture of 70°C The heated chips are fed to the first refining stage 2. By adj...

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Abstract

Method, system and refiner for refining of wood chips or pulp fibers are provided. The refining takes place in at least two subsequent refining stages (2, 3), through which the wood chips or pulp fibers are fed by a carrier medium, whereby an actual refining takes place in a plate gap, which is between a stator unit (221) and a rotor unit (222) or between two rotor units of a refiner (22, 32), which stator unit (221) and the rotor unit (222) comprise refiner segments. According to the invention, a gaseous carrier medium or steam-like carrier medium is utilized in the subsequent stages for feeding the mixture of the carrier medium and chips / fibers in the refining process, and that the fibers and the gaseous or steam-like carrier medium are fed separately into the refiner (22, 32) by a feeder means (21, 31).

Description

technical field [0001] The present invention relates to the refining of wood chips or pulp fibers. More specifically, the present invention relates to a method for refining wood chips or pulp fibers according to the preamble of independent claim 1, and a method for refining wood chips or pulp fibers according to the preamble of independent claim 12. A system for refining pulp fibers. The invention also relates to a refiner for refining wood chips or pulp fibers according to the preamble of independent claim 24 of the present invention. [0002] According to the content of the present invention, the refining process is usually carried out with at least two consecutive refining stages (refining stage), and the wood chips or pulp fibers are passed through the at least two consecutive refining stages by means of a carrier medium, thereby in The actual refining takes place in the plate gap located between the stator-rotor unit of the refiner or between two rotor units, wherein th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/12D21D1/20
CPCD21D1/20D21B1/12
Inventor 埃萨·维尔亚凯宁
Owner VALMET TECH OY
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