Continuous treatment of fibrous material to prevent channeling

Abstract

Abstract AN APPARATUS AND PROCESS FOR THE TREATMENT OF FIBROUS MATERIAL WITH TREATING LIQUIDS IN WHICH USE IS MADE OF AN ELONGATE PASSAGE WITH MEANS FOR INTRODUCING A FIBROUS MATERIAL INTO END PORTION OF THE PASSAGE AND INTRODUCTION OF TREATING LIQUID INTO AN INTERMEDIATE PORTION OF THE PASSAGE WITH MEANS FOR DRAINING TREATING LIQUID FROM THE ONE END PORTION OF THE PASSAGE AND REMOVING TREATED FIBROUS MATERIAL FROM THE OTHER END PORTION OF THE PASSAGE AND INCLUDING A RECIPROCATING PUSHER MOUNTED IN THE PASSAGE FOR RECIPROCAL AXIAL MOVEMENT WITH PUSHER ARMS INCLINED IN THE DIRECTION AWAY FROM THE ONE END OF THE PASSAGE TO EFFECT ENDWISE DISPLACEMENT OF THE FIBROUS MATERIAL IN THE SAME DIRECTION THEREWITH DURING MOVEMENT IN THE DIRECTION AWAY FROM THE ONE END PORTION OF THE PASSAGE AND PARTICULARLY FOR DISTURBING THE FIBROUS MATERIAL ALONG A GREATER PORTION OF THE PASSAGE FOR REDISTRIBUTION IN THE PASSAGE DURING RETURN MOVEMENT WITHOUT SUBSTANTIAL AXIAL DISPLACEMENT OF THE FIBROUS MATERIAL THEREWITH THEREBY TO PERMIT EFFECTING A SUBSTANTIALLY UNIFORM COUNTERCURRENT FLOW THROUGH THE PASSAGE BETWEEN THE FIROUS MATERIAL AND TREATING LIQUID AND WHICH INCLUDES MEANS FOR INTRODUCING WASH WATER INTO THE PASSAGE BEYOND THE REGION FOR INTRODUCTION OF TREATING LIQUID WHEREBY THE WASH WATER ENGAGES THE FIBROUS MATERIAL SUBSEQUENT TO CONTACT WITH THE TREATING LIQUID TO LEACH TREATING LIQUID FROM THE FIBROUS MATERIAL BEFORE REMOVAL FROM THE PASSAGE AND WHICH MAY INCLUDE THE INTRODUCTION OF STEAM INTO THE PASSAGE BEYOND THE REGION FOR INTRODUCTION OF THE TREATING LIQUID BUT BEFORE INTRODUCTION OF THE WASH WATER TO RAISE THE WASH WATER TO ELEVATED TEMPERATURE WHILE IN CONTACT WITH THE TREATED FIBROUS MATERIAL.

Inventors

• 👤 James D A Clark

Bibliographic Details