Chemistry of hydrocarbon compounds – Production of hydrocarbon mixture from refuse or vegetation – From synthetic resin or rubber
Reexamination Certificate
2005-03-01
2005-03-01
Griffin, Walter D. (Department: 1764)
Chemistry of hydrocarbon compounds
Production of hydrocarbon mixture from refuse or vegetation
From synthetic resin or rubber
C585S240000, C521S044500, C521S047000
Reexamination Certificate
active
06861568
ABSTRACT:
A process for recycling or decomposing waste plastic where such wasteplastic is decomposed in a diluent such as hot oil through actions involvingfree radical precursor, such as polyvinyl chloride or polyurethane, is achievedat low temperature. The thermal decomposition (or pyrolysis) reaction is forabout 1 hour at 375° C., and useable products, such as distillate, coke, and oilare recovered. Additionally the diluent may be recycled within the process.
REFERENCES:
patent: 3700615 (1972-10-01), Scott
patent: 3945810 (1976-03-01), Saito
patent: 4108730 (1978-08-01), Chen et al.
patent: 4118281 (1978-10-01), Yan
patent: 4145526 (1979-03-01), Vanlautem et al.
patent: 4327237 (1982-04-01), Imparato et al.
patent: 4417529 (1983-11-01), Fujimoto et al.
patent: 4584421 (1986-04-01), Saito et al.
patent: 4642401 (1987-02-01), Coenen et al.
patent: 4657400 (1987-04-01), Suehisa et al.
patent: 5226926 (1993-07-01), Matsuzaki
patent: 5368723 (1994-11-01), Takahashi et al.
patent: 5445659 (1995-08-01), Khan et al.
patent: 5569801 (1996-10-01), de Broqueville
patent: 5584969 (1996-12-01), Nagi et al.
patent: 5597451 (1997-01-01), Nagai et al.
patent: 5608136 (1997-03-01), Maezawa et al.
patent: 25 30 229 (1977-06-01), None
patent: 0 132 612 (1985-02-01), None
patent: WO 8808020 (1988-10-01), None
“Tar Sand Pyrolysis with Product Oil Recycling-Progress Report”, C.Y. Cha, F.D. Guffey, and L.J. Romanowski, Jr. Sep. 1987, Laramie, Wyo., DOE Report DOE/MC/11076-2642.
Eastern Oil Shale Conversion Using the ROPE Process, C.Y. Cha, L.J. Fahy, F.D. Guffey, Sep. 1988, Laramie, Wyo.; Work performed under DE-FC21-86MC11076.
Laboratory Simulation Studies of the Recycle Oil Pyrolysis and Extraction Concept, F. D. Guffey and D. E. Hunter, Aug. 1989. Laramie, WY, DOE Report DOE/MC11076-3032.
“Studies on Thermal Decomposition of Plastic Wastes II—Pyrolysis of Plastic Wastes by The Solvent Method”, Journal of the Fuel Society of Japan, 53, 715-725, O. Inomata, H. Ando, T. Abe, 1974 (Provided in Japanese language with English data and an English synopsis).
“Solid Waste Concerns Spur Plastic Recycling Efforts”, Chemical and Engineering News, Jan. 30, 1989, 7-15, A.M. Thayer.
“Preliminary Results of Tar Sand Pyrolysis with Product Oil Recycling,” by Cha, et al., Sep. 1986 for U.S. Department of Energy, pp. 1-27.
“Procedyne Waste Pyrolysis Process,” by Gary Balsam, presented at the Joint Seminar sponsored by Procedyne Corp., U.S. Dept. of Energy and U.S. Chemicals on Jul. 15, 1982 at Pasadena, Texas, pp. 52-60.
“Pyrolysis of Rubber Wastes in Heavy Oils and use of the Products,” by Bouvier, et al., published in Resources and Conservation in 1986, pp. 77-93.
“Thermogravimetric and Free Radical Evidence for Improved Liquefaction of Coal with Waste Tires,” Ibrahim et al., American Chemical Society, Division of Fuel Chemistry, vol. 38, No. 3, Aug. 1993, pp. 840-847.
“The Depolymerization of Polymethylene and Polyethylene,” by Wall, et al., pp. 3430-3437, Jul. 5, 1954.
“Coal and Oil/Resid Coprocessing Symposium,” “Coprocessing of Hydrocarbonacous Waste and Residual Oil—A Novel Approach to Recycling,” Anderson, et al., American Chemical Society Preprints, Division of Petroleum Chemistry, Inc., pp. 335-338, Apr. 1993.
“Thermal Recycling of Polymers,” Journal of Analytical and Applied Pyrolysis, by W. Kaminsky, pp. 439-448, 1985.
“Catalytic Decomposition of Polyethylene Using A Tubular Flow Reactor System,” vol. 69 FUEL Aug. 1990, pp. 978-984, by Ishihara et al.
“Value Recovery from Polymer Wastes by Pyrolysis,” vol. 18 Polymer Engineering and Science Jul. 1978, pp. 721-727, by Roy et al.
“Fast Pyrolysis of Plastic Wastes,” vol. 4, No. 4 Energy and Fuels 1990, by Scott et al., pp. 407-411.
“Plastics Recycling,” R.J. Ehrig, Editor, pp. 1-16, 178-183.
“Summary of Laboratory Simulation Studies of the ROPE ™ Process,” pp. 1-79, Dec. 1991, by Guffey et al., Reported to the U.S. Dept. of Energy, Office of Fossil Energy.
“Laboratory Simulation Studies of Steady-State and Potential Catalytic Effects in the ROPE ™ Process,” Reported to the U.S. Dept. of Energy, Office of Fossil Energy.
Barbour Floyd Alan
Guffey Frank D.
Griffin Walter D.
Santangelo Law Offices P.C.
Wyoming Research Corporation
LandOfFree
Process for waste plastic recycling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for waste plastic recycling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for waste plastic recycling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3435382