2581.     ---------------.  [PASCAL, P.]  Fuel Problem.  [Coordination of the Three Most Important Synthesis Processes; Fischer Synthesis, Hydrogenation and Methylation.]  Tech. moderne, vol. 28, 1936, pp. 393-397; Brennstoff-Chem., vol. 18, 1937, pp. 347-348.

        Description of the Fischer-Tropsch synthesis, the Bergius hydrogenation, and the Michot-Dupont methylation processes.  It is suggested that a complete coordination of the 3 processes be made, as follows, in order to increase the yields of synthetic gasoline from brown coal and peat:  Methylating low-temperature carbonization with fractionation and removal of aromatics; hydrogenation of the heavy liquid residues; gasification and Fischer treatment of the semicoke.  This would give maximum yield and quality of gasoline and low capital and operating costs and eliminate coke and byproducts, and at the same time it would supply aromatics for enriching natural products of low octane index.  Example:  Ordinary low-temperature carbonization of lignite would yield only 19 l. of gasoline b. 250°, whereas low-temperature methylation would give 50 l. per ton; by hydrogenating the heavy-tar residue an estimated 95 l. per ton would be given, and the gasification of the coke residue to synthesis gas and treatment by the Fischer process would increase the yield to a total of about 200 l. per ton of gasoline of an aromatic-aliphatic nature.  Michot-Dupont process further discussed in abs. 2582.