Process of separating catalyst from oxidation mixtures

Details Process of separating catalyst from oxidation mixtures Process of separating catalyst from oxidation mixtures

1999-02-04

2000-10-10

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

528176, 528288, 528308, 528322, 528335, 562413, 562543, C07C 5116, C07C 5131, D01D 102, D01D 508, D01F 1300

Patent

active

061298751

ABSTRACT:
This invention relates to methods 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 remaining catalyst is subjected to a thermal treatment, during which at least part of the monobasic acid is removed leaving behind molten dibasic acids, in which, at least a major part of the remaining catalyst is precipitated, and it is removed. A minor part of remaining catalyst is removed by methods, which include but are not limited to ion exchange, precipitation with a base or appropriate salt, and electrodialysis. The precipitated catalyst in the three removal stages may be recycled in miscellaneous ways. The dibasic acid(s) may be removed at least partially before or after any catalyst precipitation stage.

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: 4032569 (1977-06-01), Onopchenko 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: 4158739 (1979-06-01), Schulz et al.
patent: 4160108 (1979-07-01), Shigeyasu et al.
patent: 4263453 (1981-04-01), Schulz et al.
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: 4477380 (1984-10-01), Knips et al.
patent: 4603220 (1986-07-01), Feld
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), Constantini et al.
patent: 5801273 (1998-09-01), Vassiliou et al.
patent: 5801282 (1998-09-01), Dassel et al.
patent: 5817868 (1998-10-01), Rostami et al.
patent: 5824819 (1998-10-01), Dassel et al.
patent: 5908589 (1999-06-01), DeCoster et al.
E. Sorribes et al., "Formacion de neuvas fases en el proceso de obstencion de acido adipico: causas y efectos que provocan," Rev. R. Acad. Cienc. Exactas, Fis. Nat. Madrid (1987), 81 (1), 233-5 (+ English language translation).

Affiliated with

Also associated with

Rating

Process of separating catalyst from oxidation mixtures 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 of separating catalyst from oxidation mixtures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of separating catalyst from oxidation mixtures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2254106