Modern Gasworks Practice

THE COMPLETE GASIFICATION OF COAL 765 chamber B where oil was spray ed in by means of steam. The mixed vapours then passed downward through the coke hed and away through the superheater. If the coke bed attained too high a temperature steam was passed through it also, but in a downward direction. The object of the coke bed was, it seems, to fix the oil vapours and to improve the quality of “ blue ” water gas by reducing carbon dioxide to the monoxide. Working difficulties and uncertain gas quality prevented the prccess from surviving. Air Fig. 459.—The |Rose-Hastings Plant. g 3 The Bew apparatus (ITig. 460) was a decided novelty. It v. as Liiilt in pairs, the biast being admitted simultaneously at the haee of the tv o generators (A). The products of the blow passed over the bed of coal lying in the inclined coking chfl.mhp.Ts and finally travelled .downwards through the regenerators (B). Secondary air was admitted through apertures helow the inclir ed ehe ir ters ard also to the top of the regenerators.