05451296 is referenced by 10 patents and cites 72 patents.

A two stage ozone-pulp bleaching method and apparatus are disclosed. In the first stage, high consistency pulp particles are turbulently mixed and contacted with a gaseous mixture containing ozone to mix and contact substantially all of the pulp particles with ozone to react at least a portion of the pulp particles with the ozone. Pulp particles and gaseous bleaching mixture are then directed to a second stage including a quiescent pulp bed. Pulp particles may complete their reaction in the bed, which also serves to strip ozone which was not contacted with pulp particles in the first stage from the gaseous bleaching mixture.

Title
Two stage pulp bleaching reactor
Application Number
705691
Publication Number
5451296
Application Date
March 8, 1994
Publication Date
September 19, 1995
Inventor
William H Friend
Savannah
GA, US
Michael A Pikulin
Bound Brook
NJ, US
Agent
Pennie & Edmonds
Assignee
Union Camp Patent Holding
NJ, US
IPC
D21C 9/153
D21C 7/00
View Original Source