D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
8/78, 92/60.1
D21C 9/10 (2006.01) B30B 9/12 (2006.01) D21C 9/02 (2006.01) D21C 9/08 (2006.01)
Patent
CA 1327102
A process for bleaching cellulose pulp or a fraction thereof, a plant for use in carrying out said process, and a screw press, especially for use with said process and plant, resp. Abstract For bleaching cellulose pulp or a fraction thereof, e.g. reject pulp, said cellulose pulp or fraction, having a con- centration of 0.5-10%, preferably 3-6%, is introduced into a screw press comprising at least a first (47) and a second (48) dewatering zone, is dewatered in said first zone to a concentration of 20-40%, whereupon a liquor of bleach che- micals is introduced centrally into said pulp which, during continued treatment, is dewatered in said second zone to a discharge pulp concentration of 15-50, preferably 15-30%, the liquid pressed out of said second zone, together with fresh bleach chemicals,being returned to said pulp in the screw press as liquor of bleach chemicals. (Figure 1)
527754
Perley-Robertson Hill & Mcdougall Llp
Thune-Eureka A/s
LandOfFree
Process for bleaching cellulose pulp or a fraction thereof,... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for bleaching cellulose pulp or a fraction thereof,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for bleaching cellulose pulp or a fraction thereof,... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1194117