3150.     SEBASTIAN, J. J. S., EDEBURN, P. W., BONAR, F., AND SCHMIDT, L. D.  Development of Synthesis Gas Process in Experimental Unit Operating on Entrained Powdered Coal.  Am. Chem. Soc., 114th Meeting Abs., September 1948.

        Laboratory-size pilot unit has been designed, and a method has been developed for the gasification of 10-30 lb. of pulverized coal per hr. by entrainment in O₂ and steam at generator temperatures ranging 1,800°-2,400°.  The purpose was to obtain the necessary engineering design data for the construction of large-scale units producing synthesis gas from powdered coal and to test various types of fuels for their relative value in synthesis gas production.  A brief discussion is given of the principles of aerodynamics applied in the process utilizing a turbulent downward flow of O₂, steam, and product gases, which carry the powdered coal and residual dust along in a thorough entrainment inside an 82-in. long, vertical, refractory tube, 6-in. inside diameter.  Typical data obtained in 37 runs under widely different operating conditions are given.  Graphical analysis and study of the operating results led to several conclusions, which appear to be useful in controlling the quality of the synthesis gas produced and in predicting yields and efficiency under various combinations of operating conditions.