GB290575A - An improved coke and its method of production - Google Patents

Abstract

290,575. Urbana Coke Corporation, (Assignees of Parr, S. W., and Layng, T. E.). May 12, 1927, [Convention date]. Right to Patent relinquished. Retort furnaces; rotary furnaces; charging and discharging.-Apparatus for coking coal comprises a preheating hopper 2 through which pipes 4, traversed by hot waste flue gases from a pipe 5 pass, and the fuel is supplied by a screw conveyer 8 rotating in timed relation to a rotary drum 7, to one end of the latter. This drum is enclosed in a heating-chamber 13 traversed by hot gases entering by a pipe 20 and leaving by the outlet 5, and its angle of inclination may be varied by a jack 17. The temperature of the drum is maintained constant by a gas burner 21 controlled by a regulating device 23 and a thermocouple 22 responsive to the temperature in a discharge hopper 19., The speed of rotation of the drum may be automatically controlled from the regulating device 23. The fuel is discharged into a car 24 mounted on a track 25. The metal retorts 26 are provided with gas outlets 30, 31 and each has at its lower end a hinged perforated plate 33 connected to an operating rod 34, the distillates from the lower end of the retort being withdrawn through outlets 35. The retorts are enclosed in refractory walls 27 having passages 37 for the entry of gas and passages 38 from which air is admitted by valve-controlled inlets 40, 41 to burn the gas in contact with the retorts. Combustion products escape by a pipe 43 to heat the drum 7. The coke is discharged into a chamber 46 surrounded by air preheating conduits 48 which lead by a pipe 50 to the retort heating chamber. Specifications 263,785 and 277,955 are referred to.