Method and apparatus for oxygen delignification

Details Method and apparatus for oxygen delignification Method and apparatus for oxygen delignification

D - Textiles, Paper

21

C

92/56, 9/16.5

D21C 3/02 (2006.01) D21C 7/00 (2006.01) D21C 9/10 (2006.01)

Patent

CA 1184709

METHOD AND APPARATUS FOR OXYGEN DELIGNIFICATION Abstract of the Disclosure An apparatus and process for the oxygen delignification of pulp is provided in which the pulp is transported by means of timing screws in essentially plug flow through one or more substantially horizontal reactor tubes. Oxygen gas is injected into the system at a point adjacent to the pulp inlet and travels concurrently in substantially plug flow with the pulp through the system. In this manner, the pulp is initially exposed to gas of a high oxygen partial pressure while gas vented from the system adjacent the pulp outlet is of low oxygen partial pressure and has a high content of diluent gases. The process and apparatus avoid the formation of gas pockets and hot spots which may adversely affect the pulp. In an alternate embodiment, a countercurrent gas flow process is disclosed. Also provided is a catalytic treatment and recirculation system for the vented gas which permits efficient use of oxygen within the system.

399565

Affiliated with

Also associated with

Rating

Method and apparatus for oxygen delignification 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 and apparatus for oxygen delignification, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for oxygen delignification will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1297102