Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Patent
1993-06-28
1995-05-09
Straub, Gary P.
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
D01F 9127
Patent
active
054137730
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. The feed tube and chamber are constructed and arranged to define a passageway which is a gas flow path. The reactor includes purge means for intermittently and forcibly moving any fibers clogging the passageway out of the reactor, and means for intermittently oxidizing carbonaceous material in the passageway of the reactor. In use, a period of fiber formation is followed by a forced purge. Periodically, an oxidation purge is used to essentially cleanse the reactor.
REFERENCES:
patent: 1823503 (1931-09-01), Mittasch et al.
patent: 2796331 (1957-06-01), Kauffman et al.
patent: 3183277 (1965-05-01), Scherer et al.
patent: 3375308 (1968-03-01), Turkat
patent: 3411949 (1968-11-01), Hough
patent: 3664813 (1972-05-01), Hollander, Jr.
patent: 4336229 (1982-06-01), Wunderlich et al.
patent: 4391787 (1983-07-01), Tibbetts
patent: 4491569 (1985-01-01), Tibbetts
patent: 4565684 (1986-01-01), Tibbetts et al.
patent: 4572813 (1986-02-01), Arakawa
patent: 4749557 (1988-01-01), Yetter et al.
patent: 4816289 (1989-03-01), Komatsu et al.
patent: 4876078 (1989-10-01), Arakawa et al.
patent: 5102647 (1992-04-01), Yamada et al.
Endo et al, "Vapor Grown Carbon Fibers Obtained by Fluid Ultra Fine Catalytic Particles," Extended Abstracts, 17th Bi-Ann Conf on Carbon, 1985, Lexington, Ky., pp. 295-296.
Hatano et al, "Graphite Whiskers by New Process and their Composites," 30th National SAMPE Symposium, Anaheim, Calif., 1985, pp. 1467-1476.
Katsuki et al, "Formation of Carbon Fibers from Naphthalene on Some Sulfur-Containing Substrates," Carbon, vol. 19 (1981), pp. 148-150.
Okada et al, "Influence of Gas Composition on the Formation of Vapor Grown Carbon Fiber," Extended Abstracts, 19th Bi-Ann Conf on Carbon, University Park, Calif. (1989), pp. 422-423.
Tibbetts et al, "Mechanical Properties of Vapour-Grown Carbon Fibers," J. Phys. D: Appl. Phys., vol. 20 (1987), pp. 292-297.
Tibbetts et al, "An Adsorption-Diffusion Isotherm and Its Application to the Growth of Carbon Filaments on Iron Catalyst Particles," Carbon, vol. 25, No. 3 (1987), pp. 367-375.
Tibbetts et al, "High Temperature Limit for the Growth of Carbon Filaments on Catalytic Iron Particles," Mat. Res. Soc. Symp. Proc., vol. 111 (1988), pp. 49-52.
U.S. Ser. No. 07/594,540 filed Oct. 9, 1990, allowed Jan. 19, 1991.
Alig Robert L.
Gorkiewicz Daniel W.
Tibbetts Gary G.
General Motors Corporation
Grove George A.
Hendrickson Stuart L.
Straub Gary P.
LandOfFree
Method for forming carbon filters does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for forming carbon filters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for forming carbon filters will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1703789