Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Patent
1995-11-01
1998-03-17
Lewis, Michael
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
4234497, C01D 300
Patent
active
057283613
ABSTRACT:
The invention provides a method and system for continuously recovering carbon black from a plurality of composites where each one of the composites comprises carbon black and polymers. The basic method of the invention comprises a heating step which is conducted in a reactor. In the method, it is necessary to prepare a series of mixtures of the composites, with each one of the series comprising a distribution of carbon black properties substantially similar to the other mixtures of the series. The composites may be fragmentized or comminuted into smaller pieces more suitable for pyrolysis and decomposition reactions in the reactor. In the reactor, the fragmentized mixtures are heated to a temperature sufficient to crack the polymers and to form a vaporizable constituent. The vaporizable constituents are removed from the reactor at first and second outlet ends whereby the amount of time the vaporized constituents are in the reactor is reduced. That is, their residence time is reduced by the method of the invention which includes removal at two ends. The vaporized constituents are then cooled to form condensate fraction and a gaseous fraction. The gaseous fraction is then used for reinjection into the reactor chamber.
REFERENCES:
patent: 3931935 (1976-01-01), Holman
patent: 4221608 (1980-09-01), Bekcman
patent: 4284616 (1981-08-01), Solbakker et al.
patent: 4624773 (1986-11-01), Wetlinger, Jr. et al.
patent: 4740270 (1988-04-01), Roy
patent: 4839151 (1989-06-01), Apffel
patent: 5005194 (1991-04-01), Fritz et al.
patent: 5037628 (1991-08-01), Fader
patent: 5070109 (1991-12-01), Ulick et al.
patent: 5087436 (1992-02-01), Roy
patent: 5095040 (1992-03-01), Ledford
patent: 5158983 (1992-10-01), Stapp
patent: 5225044 (1993-07-01), Breu
patent: 5229099 (1993-07-01), Roy
J. Dodds, W.F. Domenico, D.R. Evans, L.W. Fish, P.L. Lassahn, and W.J. Toth, "Scrap Tires: A Resource and Technology Evaluation of Tire Pyrolysis and Other Selected Alternate Technologies", U.D. Department of Energy, Nov. 1983.
Ferro-Tech Tire Reclamation, Inc.
Hendrickson Stuart L.
Lewis Michael
LandOfFree
Method for recovering carbon black from composites 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 recovering carbon black from composites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for recovering carbon black from composites will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-955201