PROCESS AND APPARATUS FOR THE UNIFORM ALKALIZATION OF CELLULOSE

摘要

This invention relates to a process and apparatus for the production of uniformly mercerized alkali cellulose, which process comprises introducing pulverized cellulose into an upwardly directed gas current, and spraying a quantity of alkali hydroxide solution countercurrently to the gas current, the gas current having a lifting force such that any cellulose particles which have not been wetted or have been only insufficiently wetted are maintained in the turbulent zone, whereas cellulose particles which have been reacted to the desired degree sink, due to their highest specific gravity, against the gas current to a zone where they are no longer subject to the action of alkali hydroxide solution.