VERTIC AL RETORTS AND CHAMBER OVENS 165 have flanges carrying flooriug tiles at different levels to regulate th.e flow of the gases, which circulate from the combustion chambers at the bottom of the setting to the waste-gas outlets at the top. Dampers are provided in the various floors to control the heat to any retort, each pair of retorts being contained in a separate chamber.
One of the latest additions that have been introduced from time to time, not only as the result of increased experien.ee in construction, but also of intimate
Steam Pipe
-----------------Length of Retort 13'-6-— > Charge oPCoal 17cwts. approx.
Fig. 86.—Settle’s Downward Stbaming Procbss, as Applied to Intermittent Vbktical Retorts.
contact with daily working, is Settle’s Downward Steaming Process, which is in-tended to secure a wide range of flexibility in the proportion of water gas mami-factured, to reduce the risk of part of the steam passing direct through, the outlet and escaping decomposition, and to preclude affeeting the carbonizing temperature by the eudothermic reaction concerned. in the decomposition of steam. An appre-ciable amount of heat is carried forward from a nearly spent to a new charge. In