Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Patent
1993-02-03
1994-12-20
Straub, Gary P.
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
D01F 9127
Patent
active
053744152
ABSTRACT:
In a preferred embodiment, an apparatus and method for forming carbon fibers in a gas phase reaction is disclosed wherein a reactor defines a reaction chamber with a closed end and an outlet, and a reactant feed tube which extends generally axially therewithin. Gaseous reactants are injected into the reactor through an opening of the feed tube. Preferred reactants include methane, natural gas, hydrogen sulfide, ammonia, and an iron-containing compound dispersed in a carrier gas. The apparatus includes purge means for intermittently and forcibly moving any fibers clogging the reactor out of the reactor; and means for intermittently oxidizing carbonaceous material in the reactor. In use, a period of fiber formation is followed by one or more purge steps to essentially cleanse the reactor.
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Alig Robert L.
Gorkiewicz Daniel W.
Tibbetts Gary G.
General Motors Corporation
Grove George A.
Hendrickson Stuart L.
Straub Gary P.
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