Abstract
I have been to U. S. S. R. for observing the coke dry quenching plants on 1971 and '72. Its reliability, the outline of the plant, the operating conditions and the quality of the dry quenched coke are to be reported here.
It is the process that cooling gas is circulated in a closed circuit by a smoke fan, between a quenching chamber and a waste heat boiler. The capacity of a quenching chamber is 56 T/H and generated steam is 0.43 to 0.45 T/T coke, at 40 kg/cm2, and 440°C.
Many plants have been in, operation and under construction, and especially at cherepovets iron and steel works, 5 units, each capacity 56 T/H, have been worked without any wet quenching station for new No.7 and 8 coke oven batteries.
From these facts, I can appraise that its engineering and operating technique have been established.
In regard to the quality of dry quenched coke, it is better than that of wet one, especially in strength and no moisture. Therefore it could bring better results for blast furnaces with using dry quenched coke.
From the point of air pollution in quenching coke, this plant is one of the most promiment one, now existing in the world.
The points to be improved furthermore, will be the dust arrestment device during charging hot coke in the chamber and establishing the engineering to various capacity of one unit.
