Title:
連続蒸解システムにおけるチップ含浸方法
Document Type and Number:
Japanese Patent JP4996937
Kind Code:
B2
Abstract:
A method for impregnating chips in a continuous digestion system with at least one impregnation vessel (101) and one digester (102). The digestion system comprises also a heat exchanger (107), which is arranged between a first return line (106a/106b), with withdrawal from a top separator (105a/105b), and the black liquor line (108), with withdrawal of black liquor from the digester (102). The heat exchanger (107) allows a transfer of heat between the two lines. The invention is characterised in that the principal part of the fluid contents of the impregnation vessel (101) is constituted by chips moisture, steam condensate, added white liquor, and the fluid withdrawn from the top separator at the first return line (106a/106b), whereby the impregnation fluid in the impregnation vessel does not contain any substantial amount of black liquor from the digester. In this way, an impregnation vessel is established that is hydraulically isolated, in which the flow of fluid and the establishment of its alkali content take place without any influence from the fluid flow in the digester process.
Inventors:
Vidal, Snekenes
Application Number:
JP2007030161A
Publication Date:
August 08, 2012
Filing Date:
February 09, 2007
Export Citation:
Assignee:
Metso Paper Sweden Activolag
International Classes:
D21C7/14; D21C3/24; D21C7/06
Domestic Patent References:
| JP2004232184A | ||||
| JP2005220510A | ||||
| JP6510091A | ||||
| JP2005520071A | ||||
| JP2005515320A | ||||
| JP8503029A |
Attorney, Agent or Firm:
Takao Hamano
Teruichi Hirai
Teruichi Hirai