Process for carbonizing fibrous cellulosic material

Abstract

Abstract CELLULOSIC MATERIAL IN FIBROUS FORM (FOR EXAMPLE, RAYON CLOTH) IS CONVERTED TO CARBON BY SUBJECTING THE CELLULOSIC MATERIAL TO A SILICON COMPOUND, SUCH AS SILICON TETRACHLORIDE; SUBSEQUENTLY, SUBJECTING THE SILICON COMPOUND TREATED CELLULOSIC MATERIAL TO A NITROGEN COMPOUND SUCH AS AMMONIA; AND FINALLY SUBJECTING THE SILICON COMPOUND TREATED, NITROGEN COMPOUND TREATED CELLULOSIC MATERIAL TO THERMAL DEGRADTION IN A NONOXIDIZING ATMOSPHERE. THIS PROCESS CAN BE UTILIZED TO YIELD CARBON IN FIBROUS FORM OF QUALITY COMPARABLE TO THAT PRODUCED BY OTHER PROCESSES, TO INCREASE THE YIELD OF CARBON PRODUCED FROM THE CELLULOSIC MATERIAL, AND MOST SIGNIFICANTLY TO SUBSTANTIALLY REDUCE THE TIME REQUIRED FOR THERMAL DEGRADATION OF THE CELLULOSIC MATERIAL. THE MATERIAL BEING PROCESSED POSSESSES SUFFICIENT STRENGHT AT ALL STAGES OF PROCESSING TO BE SELF-SUPPORTING, PERMITTING PROCESSING TO OCCUR IN A SEMICONTINUOUS FASHION, WITH EACH STEP OF PROCESSING BEING ACCOMPLISHED BY PASSING THE MATERIAL TO BE PROCESSED FROM ONE ROLL THROUGH THE PROCESSING APPARATUS, AND ONTO A SECOND ROLL.

Inventors

• 👤 Paul A Smudski

Bibliographic Details