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nature : Refining also known as sulfuric acid. Concentrated sulfuric acid using oil or its fractions process. There are intermittent and continuous two. After treatment with sulfuric acid to be washed, and soda, washing processes. Sulfate with the role of raw materials and components refining conditions. For example, straight-run gasoline and kerosene by alkanes and cycloparaffins composition. Aromatics only rarely. Under normal conditions refined by acid, paraffin and cycloparaffins unchanged, aromatics are only a small loss by sulfonation. Some of the unsaturated oxygen, sulfur and nitrogen from the combination and with most of sulfate role is removed. Also cracking gasoline containing more olefins and aromatics, lead acid purification addition, polymerization, condensation, oxidation reaction. Thus stolen larger loss. When acid purification from the acid residue can be used to recover sulfuric acid, naphthenic acid and manufacture of asphalt substitutes.
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