Modern Gasworks Practice

VERTICAL RETORTS AND CHAMBER OVENS 163 the overhead hoppers. The regenerators are arranged on each side of the producers and are formed of two vertical passages, one for waste gases and one for secondary air, constructed of special tiles to ensure a maximum heating of the secondary air, and the absence of any short-circuiting or by-passing. The waste gases enter the regenerator at the top, and the secondary air, coming Fig. 84.—Scale Model of Intermittbnt System. in at the bottom, passes upwards into a ch amber at the top of the setting, where it is split up and conducted to the combustion chambers, which are arranged at the bottom of the retorts. The combustion chambers are placed between the retorts, and there are control dampers for secondary air, furnace gas and waste gases respectively, so arranged that the supply can be regulated in each combustion chamber. The flame can be extended or set back to suit requirements, and every point in the setting is under