Modern Gasworks Practice

VERTICAL RETORTS AND CHAMBER O VENS 173 the top to 850° C. at the base. The following are the more important particu-lårs coimected with. the installation :— Shape of retorts........................... Total length.............................. Breadth and width : Top_________________ Base_________________ Coal oarbonized per retort per 24 houi-s . Average yield per retort per 24 hours. Number of retorts set in each bed. Capital cost for complete bench, exclusive of foundations, but inclusive of coal-handling plant, coke-handling plant, etc. (house not included)_________________________________ Make per square foot of ground area . Rectangular. 25 feet. 39 inches by 11 inches. 48 inches by 20 inches. 70 cwts. Scotch common coal. 38,000-39,000 cubic feet. 6. £148 per ton of coal per max. diem. (Pre-war.) 370 cubic feet per diem. 1’tg. 92.—Hebbing’s C'oki: Extractor. Fig. 92a.—Hebring’s System ot Vertical Retorts.