Method for converting an up-flow tower for cellulose pulp to...

Details Method for converting an up-flow tower for cellulose pulp to... Method for converting an up-flow tower for cellulose pulp to...

2005-12-12

2009-08-04

Griffin, Steven P (Department: 1791)

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Charging and/or discharging fibrous material

C162S017000, C162S057000, C162S380000, C366S190000

Reexamination Certificate

active

07569120

ABSTRACT:
The method is for converting a vertically standing up-flow tower by inserting a freely insertable pipe into the conical part of the up-flow tower the tower is converted to a down-flow tower where the tower can easily be restored to the up-flow tower and optimized with regards to a minimized stagnation volume in the tower. The upper open end of the pipe is disposed at a first distance (A) from the lower part of the conical inlet part. The first distance (A) is less than the total vertical extension (B) of the conical inlet part. The cellulose pulp establishes a self-forming stagnation zone around the pipe at a lower part of the down-flow tower.

REFERENCES:
patent: 3848016 (1974-11-01), Kono et al.
patent: 5538597 (1996-07-01), Koso et al.
patent: 6098658 (2000-08-01), Toukonummi
patent: 0062232 (1982-03-01), None
Gullichsen Johan (Editor), Chemical Pulping, 1999, Fapet Oy, p. 623-624.

Affiliated with

Also associated with

Rating

Method for converting an up-flow tower for cellulose pulp to... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for converting an up-flow tower for cellulose pulp to..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for converting an up-flow tower for cellulose pulp to... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4076654