Chemistry of hydrocarbon compounds – Production of hydrocarbon mixture from refuse or vegetation – From synthetic resin or rubber
Patent
1993-08-16
1994-11-29
Vargot, Mathieu
Chemistry of hydrocarbon compounds
Production of hydrocarbon mixture from refuse or vegetation
From synthetic resin or rubber
201 25, 241DIG37, 264 37, 264349, 264 83, 264DIG69, 264233, 425DIG44, C07C 404, C07C 406
Patent
active
053692152
ABSTRACT:
Polymeric feedstocks, such as scrap or waste tires, rubber, and plastics, in a size range of -6 to +25 mesh are washed with an organic solvent to remove stabilizing additives which have migrated to the surface of the polymer particles, thus eliminating the stabilizers from participation in subsequent reactions and allowing the final production of more pure monomeric products. The polymer particles are exposed to ozone under conditions to cause stress cracking, fissuring and cleavage of the polymer feedstock particles. The ozonated polymer particles are depolymerized to produce one or more monomeric compounds, with the reaction taking place rapidly and occurring in the presence of a system of one or more catalysts which may be metallic salts. The depolymerization is accomplished under conditions of elevated temperatures and reduced pressure, the conditions being less severe than those conditions associated with thermal pyrolysis. The monomeric compounds are recovered by conventional means from otherwise waste polymers and are recycled. Other products of this invention may be collected and recycled or disposed of with no adverse impact on the environment.
REFERENCES:
patent: 3424822 (1969-01-01), Liston
patent: 3494958 (1970-02-01), Mannsfeld et al.
patent: 3558589 (1971-01-01), Bethea et al.
patent: 3582279 (1971-05-01), Beckman et al.
patent: 3704108 (1972-11-01), Alpert
patent: 3974206 (1976-08-01), Tatsumi et al.
patent: 3978199 (1976-08-01), Maruhnic et al.
patent: 3996022 (1976-12-01), Larsen
patent: 3997407 (1976-12-01), Fujii et al.
patent: 4025990 (1977-05-01), Lovette, Jr.
patent: 4029550 (1977-06-01), Mitsui et al.
patent: 4030984 (1977-06-01), Chambers
patent: 4045370 (1977-08-01), Cares
patent: 4051212 (1977-09-01), Grigat et al.
patent: 4082615 (1978-04-01), Komuro et al.
patent: 4098649 (1978-07-01), Redker
patent: 4108730 (1978-08-01), Chen et al.
patent: 4175211 (1979-11-01), Chen et al.
patent: 4240587 (1980-12-01), Letsch
patent: 4250158 (1981-02-01), Solbakken et al.
patent: 4284616 (1981-08-01), Solbakken et al.
patent: 4402791 (1983-09-01), Brewer
patent: 4426459 (1984-01-01), Watabe et al.
patent: 4430160 (1984-02-01), DuBow
patent: 4452154 (1984-06-01), Kono et al.
patent: 4452155 (1984-06-01), Ishihara et al.
patent: 4458095 (1984-07-01), Wingfield, Jr. et al.
patent: 4507174 (1985-03-01), Kutrieb
patent: 4515659 (1985-05-01), Wingfield, Jr. et al.
patent: 4577564 (1986-03-01), Tomita et al.
patent: 4579871 (1986-04-01), Linden et al.
patent: 4588477 (1986-05-01), Habib
patent: 4726819 (1988-02-01), Michimae et al.
patent: 4740270 (1988-04-01), Roy
patent: 4746406 (1988-05-01), Timmann
patent: 4787321 (1988-11-01), Schnelbacher et al.
patent: 4822573 (1989-04-01), Timmann
patent: 4839151 (1989-06-01), Apffel
patent: 4851601 (1989-07-01), Fukuda et al.
patent: 4863106 (1989-09-01), Perkel
patent: 4871426 (1989-10-01), Lechert et al.
patent: 4895083 (1990-01-01), McDilda
patent: 5084141 (1992-01-01), Holland
patent: 5162446 (1992-11-01), Gibler
patent: 5233037 (1993-08-01), Nielinger et al.
"Pyrolysis of Polymers", Chapter 6, by Walter Kaminsky, 1992, pp. 60-72.
"Thermocatalytic Degradation of Butyl Rubber in Presence of Combinations of AICI.sub.3 With Some Metal Chlorides", S. R. Ivanova et al., Polymer Science U.S.S.R., pp. 265-272 (1983).
"Scrap Tires: A Resource and Technology Evaluation of Tire Pyrolysis and Other Selected Alternate Technologies," J. Dodds et al., prepared for the U.S. Department of Energy and Idaho National Engineering Laboratory, DE-AC07-761D01570, Nov. 1983.
"Waste Tire Utilization," R. L. Hershey et al., prepared for the U.S. Department of Energy, Office of Industrial Programs, AC01-84CE40714, Apr. 30, 1987.
"Raw Material Recovery From Scrap Tires and Plastic Waste by Pyrolysis," W. Kaminsky et al., pp. 681-685.
"Recycling of Scrap Rubber as a Filler for Thermoplastics (Block, Sheet, Film) After a Controlled Pyrolysis and Crushing," by J. M. Vergnaud et al., pp. 187. 188.
"Pryolysis in a Fluidized Bed-A Recycling Process Developing Towards A Production Scale Plant," H. Timmann.
"Resource Recovery," C95/85, D. V. Jackson et al., 1985 Kirk-Othmer Encyclopedia of Chemical Technology, 3rd Ed., vol. 19, pp. 1002-1010, 1982.
Thermodynamics of Polymerization, H. Swada, Dekker, 1976, pp. 2-5; 7-10; pp. 311-313; 318-325.
Macromolecules, Bovey and Winslow, Academic Press, 1979, pp. 431-433 Encyclopedia of Polymer Science and Engineering, Wiley Interscience, vol. 4, pp. 719-744.
Polymer Handbook, Third Edition, J. Brandrup et al., Wiley Interscience, 1989, pp. II 275-290.
Rubber Chemistry and Technology, vol. 64, "The Ozonation of N,N"-DI-n-Octyl-p-Phenylenediamine and N,N"-DI-(1,1-Dimethylethyl)-p-Phenylenediamine", R. P. Lattimer et al., pp. 780-789.
"Recycling von Altreifen durch Pyrolyse in der Wirbelschicht," Prof. Dr. W. Kaminsky et al., pp. 181-196.
"Pyrolyse von Kunststoffabfallen (Recycling)," Kunststoffe-Plastics, pp. 20-24, Feb. 1986.
"Ein Verfahren zur Abfallbeseitigung und Rohstoffruckgewinung," Dr. Bracker, Herne, pp. 46-48, Apr. 1981.
"Verarbeitung von Kunststoffmull und Altreifen zu Chemie-Rohstoffen, besonders durch Pyrolyse," Prof. Dr. H. Sinn, et al. pp. 1-35.
Search 1-Report, InfoMaster (R) Service (c) 1990 Telebase4 Systems, Inc., U.S. Patent No. 4,774,655, pp. 29-31, Jun. 6, 1990, Search Parameter: Tires and (Reclaim/or Recycl/) and Depolymer/.
Search 2-Report, Chemical Abstracts (1967-Present) Via Easy Link, pp. 32-60, Jun. 7, 1990 Search Parameter: Tires and (Reclaim/ or Recycl/) and Pyroly/.
U.S. PTO Classification and Search Support Information System (1969 to Date), pp. 1-4, Mar. 23, 1992, (Conducted at Rice University), Search Parameter: Ozon* and (Crack* or Fract* or Fissure or Scission).
U.S. PTO Classification and Search Support Information System, (1969 to Date), Mar. 23, 1992, (Conducted at Rice University), Search Parameter: Ozon* and (Depoly* or Degrad*).
U.S. PTO Classification and Search Support Information System, (1969-Date), pp. 1-21, Mar. 25, 1992, (Conducted at Rice University), Search Parameter: (Plastic or Poly* or Rubber or Tires) and Depoly*.
U.S. PTO Classification and Search Report Information System, (1969-Date), pp. 1-29, Mar. 25, 1992, (Conducted at Rice University), Search Parameter: (Plastic or Poly* or Rubber or Ties) and Ozone*.
U.S. PTO Classification and Search Support Information System (1969-Date), pp. 1-5, Mar. 25, 1992, (Conducted at Rice University), Search Parameter: (Recycl* or Reclam* or Reclaim*) and Ozon*.
S-P Reclamation, Inc.
Vargot Mathieu
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