Show Recovering Tar Products I A combination distillation and burning process In which the tar products are driven off oft from coal coni before before before be be- fore being burned under boilers Is Isnow Isnow isnow now being Introduced In Germany Coal from the bunker Is fed to the boiler boller furnace through a n retort at the bottom of which Is a distilling chamber chamber cham ber bel facing the glowing fire on the grate The gases driven off oft from tho the coal discharge Into an extraction extraction ex ex- traction apparatus alongside the boilers and the tar liquors and other products recovered This meth method d Is said to be more efficient effi etli- clent than the separate gas and coking plants Popular Popular Mechanics Magazine |