PATENT

3283. ----- [SCHMALFELDT, H.AND WINTERSHALL A. G.]  Water Gas or Synthesis Gas From Powdered Lignite.]  Italian Patent 351,291, mar. 31, 1937.  Chem. Zentralb., 1938, I, p. 2663.

Lignite is gasified in a circulating gas stream that enters the gasification zone at > 1,300°.  In order to obtain a low CH₄ content in the gas, the dust concentration of the added lignite per m.³ of circulating gas at 0° and 760 mm. Hg is chosen at > 500 gm.  A part of the already gasified char dust is returned to the highly heated stream of circulating gas and to the freshly added dust as soon as the latter is degassed.