63.    ANTHRACITE INSTITUTE BULLETIN.  Refuse Anthracite Source of Synthetic Fuels.  No. 1513, 1948, p. 1.

                It is estimated that there are 200 million tons of anthracite silt above ground and over 5 million tons are produced annually.  In the plant and process now under construction by the institute at Wilkes-Barre, Pa., silt, air, and steam will be fed into a refractory-lined cylinder where combustion takes place.  The fluidized-bed principle is used, and the silt is either intermittently blown with air and steam or continuously with O₂ and steam.  A producer gas is made containing CO₂, CO, H₂, and N₂.  This is passed through a second bed of silt where the CO₂ reacts with the C to give additional CO, which increases the heat content of the producer gas.  If a gas of still higher heat value is desired, steam is introduced into the producer gas at the top of the fluidized bed to give water gas.  A logical use of the process is to produce synthesis gas and to convert this into liquid fuels.