Abstract
Coking industry and gas industry, although they were both based on coal carbonisation, had naturally different starting and develoment as their respective objects were different. However, these two industries have gradually merged almost into one with respect to utilization of the surplus coke-oven gas in iron works. Recently another big industry-synthesis gas industry-approached them, and it is anticipated that these three industries, all of which produce and utilize gas, will be amalgamated into one and form a part of the general chemical industry.
Due to dwindling of good coking coal, especially in Japan, the importance of utilization of non-and weakly caking coals, which are termed “non-carbonising coals”. For employment of such coals carbonisation of briquetted char (for coke making) and carbonisation and gasification of fion coal by fluidization (for gas and char making) are desecribed.
