2062.     LARIN, A. Y.  [Cracking of Heavy Petroleum Stocks Over Heated Surfaces.]  Bull. acad. sci. U.R.S.S., classe sci. tech. 1944, pp. 42-47; U.O.P. Co. Survey Foreign Petroleum Literature, Transl. 495; Nat. Petrol. News, vol. 38, No. 14, pp. R 286, R 288-289, 1946.

        Heavy paraffin hydrocarbons obtained from CO and H₂ (Kogasin) are known to decompose under the action of a heated wire spiral immersed in them, forming a gas abundant in olefins.  This method was used in cracking heavy-oil distillates, containing paraffins, also naphthenes and aromatics, as well as heavy resinous substances.  A gas was produced of a composition approximately identical with that obtained from paraffin wax.  However, the yields of gas per unit energy consumed are lower, when the charge is richer in compounds with a low H content.  An oil distillate consisting essentially of naphthenes gives a yield of gas per kw.-hr. that is half that obtainable from paraffin wax, whereas 1 containing up to 21% aromatics gives about ¼ as much.  From fuel oils the yields of gas are still lower and fluctuate greatly depending upon the contents of resins and carboids in the charge.