Coke
Coke (German: Koks, English: coke) is a fuel that has coal dried (steamed). In kanji let's write it as a coal. By steaming, components such as sulfur, coal tar and pitch are removed from coal. As a result of this dry distillation process, the calorific value at the time of combustion becomes higher than the coal of the original raw material and the high temperature can be obtained, so steam locomotives and iron and steel industry etc. are mainly focused, and even now it is indispensable for the heavy industry There is no fuel. Appearance resembles coal, but metallic luster is weaker than coal because it is porous. Porosity is formed by volatilization in coal at the time of dry distillation (1,300 ° C. or higher), and as a result, the purity of carbon is increased and combustion at a high temperature is possible. The general yield is about 20 (weight ratio) to coal 100 of grade about bituminous coal and the remainder is by-product, ash (combustion ash, ash). ...