GB286404A - Improvements relating to the distillation of carbonaceous or bituminous substances - Google Patents

Abstract

286,404. Evans, W. E., (Kohlenveredlung Akt.-Ges.). Dec. 31, 1926. Coking processes. -In the low temperature distillation of powdered or granular fuel which passes through the distilling chamber in suspension in a gas. hot producer or water gas is used immediately after leaving the gas producer and is fed into the distilling chamber together with the powdered fuel through a common nozzle. A number of distilling chambers may be used whereby distillation is effected in stages. When two rertorts A, B are used the powdered fuel from a hopper 4 is projected by hot combustible gas through a nozzle 3 into a shaft 2, the residue falling through the annular space surrounding the shaft and being collected with the distillates in a dust separator 10, from which the distillates pass through a condenser 11, the gases leaving by an outlet 14 and the tar by an outlet 15. The incompletely coked residue is transferred to a second retort B where it is treated in a similar manner by hot gases from a producer 26 entering by a nozzle 20. The distillation gases and unconsumed coke pass to a dust separator 23. the powdered coke from which is fed by a pipe 27 to the producer 26, the gas passing by a pipe 25 to a pump 9 and heater 6 before entering the retort A. In an alternative form of retort, Fig. 3, the heating gas and fuel are blown by nozzles 36 through inclined tubes 32 opening into a dust separator 33. A heating gas may be conducted through the space 43 surrounding the tubes to heat the latter on the outside.