Method of producing food grade quality white mineral oil

Details Method of producing food grade quality white mineral oil Method of producing food grade quality white mineral oil

1992-09-15

1994-03-15

Czaja, Donald E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 58, 208 97, 208210, C10G 4500

Patent

active

052943275

ABSTRACT:
The production of food grade quality white mineral oils from predominantly naphthenic or cycloparaffinic crude distillates heretofore have required acid treating using sulfuric acid followed by neutralization, water wash and possibly finishing step. Herein, however, three stages of hydroprocessing without any solvent extraction or acid treatment prior step are employed to produce the desired food grade quality white mineral oil having a trace of aromatic constituents therewithin. Specific steps are defined in the application in terms of the severity of the hydrogenation in the hydrotreatiang operation at each respective step; as well as the steps of separating gaseous constituents of the hydroprocessing product.

REFERENCES:
patent: 4251347 (1981-02-01), Rausch et al.
patent: 4263127 (1981-04-01), Rausch et al.
patent: 4325804 (1982-04-01), Everett et al.
patent: 4810355 (1989-03-01), Hopkins

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