Forfatter: A.-M.Inst.C E., George Frederick Zimmer
År: 1916
Forlag: Crosby Lockwood and Son
Sted: London
Sider: 752
UDK: 621.87 Zim, 621.86 Zim
Being a Treatise on the Handling and Storing of Material such as Grain, Coal, Ore, Timber, Etc., by Automatic or Semi-Automatic Machinery, together with the Various Accessories used in the Manipulation of such Plant
156 THE MECHANICAL HANDLING OF MATERIAL
in completing the quenching of the coke. As soon as the ascent is reached, a wave of
water falls back on the coke and materially assists the final quenching. This wave is
supplemented by a copious final spray. The most important effect of the inclined
delivery flue, however, is in quenching the coke by means of vapour. The flue, and
sometimes a large portion of the conveyor as well, are closed, and lead to an uptake
or chimney. The presence of a great volume of steam or vapour in these flues excludes.
Fig. 211. Photographic View of Merz Hot Coke Conveyor at Cassel Gasworks.
the air from the coke, so that at the end of its journey through the inclined flue it is
still hot enough to evaporate the surplus water, yet not sufficiently hot to ignite again,
which is a matter of great importance and a safeguard against fire. The introduction
of automatic devices for turning the spraying water on and off as the hot coke approaches
and leaves the spraying points has recently engaged the attention of several manufacturers,
and this is an important improvement in large installations, where the whole contents
of a 20-ft. retort are deposited on to the conveyor over a space of only 5 or 6 ft. of its-
length, the conveyor being then practically empty for some yards.