Method of producing activated carbon fiber

Details Method of producing activated carbon fiber Method of producing activated carbon fiber

1992-08-27

1999-11-30

Lewis, Michael

Catalyst, solid sorbent, or support therefor: product or process

Solid sorbent

Free carbon containing

4234476, B01J 2002

Patent

active

059942614

ABSTRACT:
A pitch-type fiber convertible to an activated carbon fiber is infusiblized with an infusiblizing gas and the infusiblized fiber is activated with an activating gas, such as steam, to produce an activated carbon fiber. The waste gas from the infusiblizing step is utilized in a combusting step. The combustible component of the waste gas from the activating step is separated out of the waste gas from the activating step and combusted in the combusting step along with the waste gas from the infusiblizing step. The resulting heat from the combusting step is utilized to preheat the infusiblizing gas and the activating gas and the preheated gases are utilized in the infusiblizing step and the activating step, respectively. This arrangement allows the infusiblizing temperature and the activating temperature to be accurately controlled. Thus, an activated carbon fiber is manufactured continuously without being negatively affected by waste gases from the infusiblizing and activating steps.

REFERENCES:
patent: 4921686 (1990-05-01), Yoshida et al.

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