Abstract: Hydrocracked oils are stabilized against deterioration due to exposure to light and/or air by adding to them a small amount of aromatic amine having a nitro group, the amino and nitro groups being ortho or para to each other.

Abstract: A method is provided for desulfurization of oil stock, e.g. residual oil, having a minimum sulfur content of about 2 weight percent and a minimum metals content of about 50 ppm to produce a low-sulfur, high-metals content raffinate and a high-sulfur, low-metals content extract which comprises contacting said oil stock with a solvent selective for low molecular weight aromatics and having a boiling point within the range of from about 0.degree. F to about 100.degree. F and a density greater than or less than the density of the oil stock being contacted by at least 0.1 g/cc, said contacting being conducted at a temperature of from about 60.degree. F to about 212.degree. F, a solvent/oil stock volume ratio of from about 0.25 to about 10 and a pressure higher than the vapor pressure of the solvent at the contacting temperature, and separating the low-sulfur, high-metals content raffinate from the high-sulfur, low-metals content extract.

Abstract: This invention provides a process which involves solubilizing coal in a thermally stable refinery petroleum solvent to form a homogeneous solution, and blending the homogeneous solution with petroleum cutter-stock to produce No. 5 fuel oil.

Abstract: In a hydrocarbon conversion process for the catalytic desulfurization of a hydrocarbon feedstock the process is carried out at a low hydrogen partial pressure to obtain formation of a low sulfur product and conversion to butanes and propane, as desired, wherein the isoC.sub.4 /n-C.sub.4 ratio is high, the process being carried out in the presence of an active, stable and selective catalyst containing at least one noble metal component incorporated with a crystalline aluminosilicate. A pressure from 100 to below 500 psig is used. The process contemplates simultaneously pretreating reformer feedstock in the presence of a hydrocracking catalyst with controlled hydrocracking thereof. Preferred highly effective catalysts are those containing palladium incorporated with a crystalline aluminosilicate zeolite.

Abstract: The thiosulfate-containing purge stream generated in a Stretford-type process for purifying a hydrogen sulfide contaminated gas stream is treated with phosphoric or sulfuric acid and then with lime to recover vanadate salts, anthraquinone disulfonic acid salts, and alkali, for reuse in the process.