Method of isolating individual normal alkanes from petroleum stock

Abstract

A method of isolating individual normal alkanes from petroleum stock, wherein the petroleum stock is contacted with crystalline carbamide in the presence of an activator at a temperature which is the upper limit for a given individual normal alkane to be isolated, having maximum molecular weight for the given stock, to complex with crystalline carbamide, the result being a complex of said alkane with the carbamide. The residual stock is taken off from the complex formed. The complex is washed with an individual normal alkane similar to the isolated one, heated up to the temperature 2.degree.-5.degree. C higher than its decomposition point and the individual normal alkane, having maximum molecular weight for the given stock, is isolated. Individual normal alkanes are isolated in succession in order of decreasing molecular weights from the stock taken off from the formed complex of the normal alkane, following the technology described above. The proposed method provides individual normal alkanes up to 99.99 mass.% pure and is simple in technology.

Dependencies are inferred from the claim text.