Mineral oils: processes and products – Refining – Purifying used oil
Patent
1994-10-26
1996-06-18
Padgett, Marianne
Mineral oils: processes and products
Refining
Purifying used oil
208184, 208106, 196 46, 196100, 196117, 196139, C10G 700
Patent
active
055274498
ABSTRACT:
Waste lubricating oil, vegetable oil and animal fat are reprocessed into commercially usable diesel fuel and naphtha by thermocracking. A thermocracker unit is fired with sludge removed from the principal pool of oil or fat undergoing vaporization. The vapors are separated from liquids in a primary distillation tower with precisely controlled heating. Resultant vapors are partially condensed. Resultant liquids flow downward through a secondary distillation tower into a reboiler which is heated by a flue gas bypass with an auxiliary burner. Vapors leaving the secondary distillation tower are partially condensed and resultant fluids are passed to a light ends flash tank. Gases from the flash tank fuel the auxiliary burner. Liquids are collected and stored for selling as naphtha. Hot liquids are withdrawn from the reboiler and are immediately cooled to atmospheric conditions. Liquids within specification are stored in a diesel storage tank for further use and sale. Off-specification products are stored in a reflux storage tank and are pumped and heated and sprayed downward in the primary distillation tower for washing the tower and for reprocessing in the thermocracking unit. Some light ends are mixed with sludge in a storage tank. The mixture is pumped as sludge fuel to the burner in a fire tube in the thermocracking unit.
REFERENCES:
patent: 342564 (1886-05-01), Benton
patent: 342565 (1886-05-01), Benton
patent: 1664977 (1928-04-01), Hanna
patent: 1838718 (1931-12-01), Stutler
patent: 1886621 (1932-11-01), Bagwill
patent: 1909335 (1933-05-01), Brewster et al.
patent: 1911114 (1933-05-01), Gard et al.
patent: 1927652 (1933-09-01), Stratford
patent: 1993344 (1935-03-01), Jacobson
patent: 3954602 (1976-05-01), Troesch et al.
patent: 4033859 (1977-07-01), Davidson et al.
patent: 4594461 (1986-06-01), Jeromin et al.
patent: 4623448 (1986-11-01), O'Connell et al.
patent: 4784751 (1988-11-01), McGehee
patent: 4894140 (1990-01-01), Schon
patent: 4904345 (1990-02-01), McCants
patent: 4941967 (1990-07-01), Mannetje et al.
patent: 5049258 (1991-09-01), Keim et al.
patent: 5215630 (1993-06-01), Hata et al.
patent: 5218132 (1993-06-01), Mobbs et al.
patent: 5250155 (1993-10-01), Zwanenburg et al.
patent: 5286349 (1994-02-01), Shurtleff
patent: 5306419 (1994-04-01), Harrison et al.
patent: 5382328 (1995-01-01), Drespa et al.
patent: 5389242 (1995-02-01), Lermite et al.
Bacon, R. F., "The American Petroleum Industry", McGraw-Hill Book Company, Inc. p. 557 (1916) no month.
Kitzen et al., "Gas Oil Pyrolysis in Tubular Reactors", Chemical Engineering Progress, vol. 65, No. 7, pp. 71-76 (1969) Jul.
Marshall et al., "Gas Oil Feedstocks for Ethylene Production", Chemical Engineering Progresss, vol. 65, No. 10, pp. 65-73 (1969) Oct.
Brooks et al., "The Preparation of Gasoline and Kerosene from Heavier Hydrocarbons", The Journal of Industrial and Engineering Chemistry, vol. 7, No. 3, pp. 180-186 (1915) no month.
"The Oil Industry", p. 415 no date, no source, no author.
Stephens et al., "Petroleum Refining Processes", Pennsylvania State University, pp. 201-202 (1956) no month.
J. Grant, ed. Hackh's Chemical Dictionary, McGraw-Hill Book Co., Inc., N.Y. 1944 (no month) pp. 591-592.
Brown Stanton D.
Bullin Jerry A.
Marstaller Ronald D.
Wentworth Michael M.
Brown Stanton D.
Creighton Wray James
Padgett Marianne
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