Plastic and nonmetallic article shaping or treating: processes – Recycling of reclaimed or purified process material – Of liquid process material
Patent
1997-12-08
1999-06-01
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Recycling of reclaimed or purified process material
Of liquid process material
2641761, 528176, 528288, 528308, 528322, 528335, D01D 102, D01D 508, D01F 1300
Patent
active
059085894
ABSTRACT:
This invention relates to methods and reactor devices for controlling the oxidation of hydrocarbons to dibasic acids, in the presence of a catalyst and a monobasic acid, by removing the catalyst from the reaction mixture, outside the oxidation zone, after the oxidation has taken place at least partially. Initially, the catalyst is partially precipitated and removed by reducing the water level in the reaction mixture and/or subjecting the reaction mixture to a temperature, at which or over which catalyst precipitates. After the initial partial precipitation of the catalyst, the mother liquor remaining is subjected to a thermal treatment during which at least the major part of the monobasic acid is removed leaving behind molten dibasic acids, in which the remaining catalyst precipitates substantially in its totality, and it is removed. The precipitated catalyst in the two precipitation stages may be recycled in miscellaneous ways. From the foregoing it will be appreciated that, although specific embodiments of the invention have been described herein for purposes of illustration, various modifications may be made without deviating from the spirit and scope of the invention. Accordingly, the invention is not limited except as by the appended claims.
REFERENCES:
patent: 1121532 (1914-12-01), Newberry
patent: 2014044 (1935-09-01), Haswell
patent: 2223493 (1940-12-01), Loder
patent: 2223494 (1940-12-01), Loder
patent: 2301240 (1942-11-01), Baumann et al.
patent: 2439513 (1948-04-01), Hamblet et al.
patent: 2557282 (1951-06-01), Hamblet et al.
patent: 2565087 (1951-08-01), Porter et al.
patent: 2980523 (1961-04-01), Dille et al.
patent: 3161603 (1964-12-01), Leyshon et al.
patent: 3231608 (1966-01-01), Kollar
patent: 3234271 (1966-02-01), Barker et al.
patent: 3290369 (1966-12-01), Bonfield et al.
patent: 3361806 (1968-01-01), Lidov
patent: 3515751 (1970-06-01), Oberster et al.
patent: 3530185 (1970-09-01), Pugi
patent: 3613333 (1971-10-01), Gardenier
patent: 3677696 (1972-07-01), Bryk et al.
patent: 3839435 (1974-10-01), Shigeyasu et al.
patent: 3928005 (1975-12-01), Laslo
patent: 3932513 (1976-01-01), Russell
patent: 3946076 (1976-03-01), Paasen et al.
patent: 3957876 (1976-05-01), Rapoport et al.
patent: 3987100 (1976-10-01), Barnette et al.
patent: 3987808 (1976-10-01), Carbonell et al.
patent: 4025498 (1977-05-01), Buss et al.
patent: 4039304 (1977-08-01), Bechthold et al.
patent: 4055600 (1977-10-01), Langley et al.
patent: 4065527 (1977-12-01), Graber
patent: 4308037 (1981-12-01), Meissner et al.
patent: 4332590 (1982-06-01), Smith
patent: 4361965 (1982-12-01), Goumondy et al.
patent: 4370304 (1983-01-01), Hendriks et al.
patent: 4394139 (1983-07-01), Board
patent: 4419184 (1983-12-01), Backlund
patent: 4423018 (1983-12-01), Lester, Jr. et al.
patent: 5061453 (1991-10-01), Krippl et al.
patent: 5104492 (1992-04-01), King et al.
patent: 5123936 (1992-06-01), Stone et al.
patent: 5170727 (1992-12-01), Nielsen
patent: 5221800 (1993-06-01), Park et al.
patent: 5244603 (1993-09-01), Davis
patent: 5270019 (1993-12-01), Melton et al.
patent: 5271904 (1993-12-01), Esposito et al.
patent: 5286458 (1994-02-01), Yang et al.
patent: 5294378 (1994-03-01), Succi et al.
patent: 5312567 (1994-05-01), Kozma et al.
patent: 5321157 (1994-06-01), Kollar
patent: 5374767 (1994-12-01), Drinkard et al.
patent: 5396850 (1995-03-01), Conochie et al.
patent: 5399750 (1995-03-01), Brun et al.
patent: 5463119 (1995-10-01), Kollar
patent: 5502245 (1996-03-01), Dassel et al.
patent: 5516423 (1996-05-01), Conoby et al.
patent: 5558842 (1996-09-01), Vassiliou et al.
patent: 5580531 (1996-12-01), Vassiliou et al.
patent: 5654475 (1997-08-01), Vassiliou et al.
patent: 5756837 (1998-05-01), Costantini et al.
U.S. Application No. 08/587,967, Filed Jan. 17, 1996.
U.S. Application No. 08/812,847, Filed Mar. 6, 1997.
U.S. Application No. 08/859,985, Filed May 21, 1997.
U.S. Application No. 08/861,281, Filed May 21, 1997.
U.S. Application No. 08/861,180, Filed May 21, 1997.
U.S. Application No. 08/861,176, Filed May 21, 1997.
U.S. Application No. 08/859,890, Filed May 21, 1997.
U.S. Application No. 08/861,210, Filed May 21, 1997.
U.S. Application No. 08/824,992, Filed Mar. 27, 1997.
U.S. Application No. 08/477,195, Filed Jun. 7, 1995.
U.S. Application No. 08/876,692, Filed Jun. 16, 1997.
U.S. Application No. 08/900,323, Filed Jul. 25, 1997.
U.S. Application No. 08/931,035, Filed Sep. 16, 1997.
U.S. Application No. 08/932,875, Filed Sep. 18, 1997.
U.S. Application No. 08/934,253, Filed Sep. 19, 1997.
E. Sorribes et al., "Formacion de neuvas fases en el proceso de obtencion de acido adipico: causas y efectos que provocan," Rev. R. Acad. Cienc. Exactas, Fis. Nat. Madrid (1987), 81 (1), 233-5 (+ English language translation).
Dassel Mark W.
DeCoster David C.
Dudgeon Douglas J.
Rostami Ader M.
Vassiliou Eustathios
Tentoni Leo B.
Twenty-First Century Research Corporation
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