Mineral oils: processes and products – Paraffin wax; treatment or recovery – Separation of paraffin from oil
Patent
1993-09-10
1995-03-28
Myers, Helane
Mineral oils: processes and products
Paraffin wax; treatment or recovery
Separation of paraffin from oil
208 37, 208 38, C10G 4308
Patent
active
054013836
ABSTRACT:
The incremental solvent dilution chilling of 600N waxy oils in a staged agitated chilling tower using cold solvent injection is improved in terms of feed filter rate with respect to a 600N waxy oil having a final boiling point of >600.degree. C. and a mean boiling point of about 500.degree. C. when the solvent dewaxing process is practiced under conditions of cold solvent injection such that there is an equal chilling rate/stage profile as compared to an equal temperature drop/stage profile in the chilling tower and with respect to a 600N waxy oil having a final boiling point of 600.degree. C. and a mean boiling point of about 500.degree. C. when the solvent dewaxing process is practiced under conditions of cold solvent injection such that there is an equal temperature drop/stage profile as compared to an equal chilling rate/stage profile in the chilling tower.
REFERENCES:
patent: 3642609 (1972-02-01), Mayer et al.
patent: 3681230 (1972-08-01), Eagen et al.
patent: 3773650 (1973-11-01), Hislop et al.
patent: 3775288 (1973-11-01), Eagen et al.
patent: 3779894 (1973-12-01), Eagen et al.
patent: 3850740 (1974-11-01), Gudelis et al.
patent: 4115243 (1978-09-01), Harrison
patent: 4115244 (1978-09-01), Pitman et al.
patent: 4115245 (1978-09-01), Harrison et al.
patent: 4146461 (1979-03-01), Broadhurst et al.
patent: 4216075 (1980-08-01), Ryan
patent: 4319962 (1982-03-01), Ryan
"Dewaxing of a heavy paraffinic oil in a solution of dimethylformamide and toluene" Kakkos, et al, Neft. Gezov Prom-st 1989 (3) 52-4. Abstract.
"Dewaxing of a middle paraffinic distillate from the Drogabych Petroleum Refinery" Kakkos et al, Neft Gazov Prom-st, 1991 (2) 51-3. Abstract.
"Factors influencing the filtration rate in solvent-wax removal" Isoya. Idemitsu Giho 1992 35(4) 395-400 Abstract.
"Low Temperature Ketone Dewaxing of Mineral Oils by Direct Cooling" Passut et al. Ind. Eng. Chem Process Des Div. vol. 16, No. 1, 1977 120-124.
"Encyclopedia of Chemical Processing & Design--Dewaxing, Solvent" vol. 15 pp. 353-370, 1982.
"Paraffin wax bulk crystallization From solution" Menshov et al. Teor. Osn. Khim Tekknol, 1987 21(4) 549-52.
Allocca Joseph J.
Exxon Research & Engineering Co.
Myers Helane
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