An improved process for refining mineral, vegetable or animal oils, paraffins, waxes, resins and the like

摘要

Animal, vegetable, or mineral oils, waxes, resins, &c. are refined by slightly acidifying the substance in liquid, molten or dissolved condition and then treating, e.g. by shaking, with a chemically active dry powder, mud or slime obtained by elutriating salt or fresh water mud or slime containing silicon compounds deficient in oxygen. In examples: (1) a crude petroleum oil, acidified with 0,1--5 per cent of sulphuric acid, is mixed with 5--20 per cent of chemically active, dry powder slime, vigorously shaken for 10--50 minutes, and the raffinate separated by decantation, pressing or distillation; (2) crude paraffin, liquified by heat or dissolution in benzine &c. is similarly treated, the solvent, if employed, being removed by distillation; (3) crude olive oil, acidified with 0,1--2 per cent of sulphuric, hydrochloric, acetic or formic acid is similarly treated, the bright oil being pressed off cold or warm; (4) conifer balsam, dissolved in alcohol, is similarly treated, the raffinate being pressed off and freed from solvent by distillation. Specifications 319,808, [Class 95], and 372,917 are referred to.