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...Treatment processes in petroleum refining introduction oil refinery photo doe treating is a means by which contaminants such as organic compounds containing sulfur nitrogen and oxygen dissolved metals inorganic salts soluble emulsified water are removed from fractions or streams refiners have choice of several different but the primary purpose majority them elimination unwanted variety intermediate finished products including middle distillates gasoline kerosene jet fuel sour gases dried sweetened sweetening major treats hydrogen sulfide thiophene mercaptan to improve color odor oxidation stability also reduces concentrations carbon dioxide can be accomplished at an stage process just before sending product storage choices method depend on nature amount type impurities treated extent removes end specifications materials include acids solvents alkalis oxidizing adsorption agents acid caustic clay sulfuric most commonly used results partial complete removal unsaturated hydrocarbons resin...