GB362522A - Improvements in coking apparatus - Google Patents

Abstract

362,522. Apparatus for low temperature carbonization. PUENING, F., O'Hara Township, Pennsylvania, U.S.A. Sept. 10, 1930, No. 27026. Convention date, Oct. 1, 1929. [Classes 51 (i), 51 (ii), and 55 (i).] In carbonizing apparatus of this type in which the coke chambers may be enlarged through movement of their walls for discharging the coke, the chamber walls are hollow and internally heated, and a housing encloses the chambers and walls and serves to collect the distillates and: pass them to an outlet pipe. A housing 1 contains a number of hollow walls 2 supported on beams 3 each pivotally connected by a pin 4 to a beam 5, and resting by wheels 6 on a rail 7, the lower end of each wall being anchored by a bracket 9 to the housing 1. Thus, each wall swings about a vertical axis, and extensions 12 are provided which are joined to flexible metal sheets 13 forming sides of chambers 14, 15 which communicate with a source of heating gases. The walls are moved by arms 16 operating vertical shafts 17 which by linkwork and levers actuate rods 20, 23 attached to the walls and having different lengths of travel. The bottom of the coking chambers formed between the hollow walls are closed by doors 25, operated by a windlass 29. A movable platform 31 carries coal hoppers 37 each closed by a gate 38 controlled by a lever 39, auxiliary hoppers 40 being provided to supply coke breeze to the edges of the heating walls for sealing purposes. Coke pushers 42 serve to remove the coke from between the walls when these are separated. The side-plates of the heating walls are spaced by baffles 53, 54, which distribute the heating gases supplied by a fan 60 from a combustion chamber, and circulated through the heating walls 2, and back to the fan. The heat losses are made up by hot gases from the combustion chamber, surplus heating gases escaping through an outler 65, and reversing valves 75, 76 being provided. Dampers 83, 84, Fig. 3, are normally closed, but are opened to allow hot gases to circulate outside the hollow walls 2 until distillation starts. In operation, after the spaces 58 are filled, the main coking spaces between the heating walls 2, which spaces are about three inches thick, are charged with fuel which is heated to about 1200‹ F., the path of the heating gases being periodically reversed. The distillates escape through an outlet 86. The coke is discharged by separating the heating walls and dropping the doors 25, the pushers 42 being operated to remove adhering coke. On opening a door 90 provided with a liquid seal 91 the coke falls into a trolley 89. In a modification, Fig. 5, the coal between hollow movable heating walls 96 is heated by a heating fluid such as molten metal, or a fused salt, which is heated in a coil 103 and circulated by a propeller 108 through metal tubes 98, 99, and return conduit 102. The combustion gases from a burner 106 may be passed through dampers 114, 115 to .liquefy the heat-conducting material before distillation takes place.