Abstract
In line with depression of petroleum resources all over the world it is anticipated that in the future tendency for unstabilized oil supplies, higher pricing and deterioration in quality will be further enhanced. Under such circumstances, description has been made covering current status of demands for industrial fuels, trends for demands in the future, and further relative to trends for technical development associated therewith, putting the focus on industrial boilers, within the extent of the sight of the author reaches.As for industrial fuels, there are available petroleum, LNG, and coal.But simple revival of coal likely to run reverse to the course of the age will be difficult, and particularly on industrial boilers, it is considered impossible.Therefore, as fuel for industrial boilers, petroleum and LNG will be the main stream for about the years to come.Petroleum fuels will become ever heavier in quality, and it is considered that associated with issues of ecology problems energy saving techniques will be advanced and then, weight shared by LNG will be increased little by little.Subsequently, when know-hows of gasification and liquifaction of coal put to practical application, coal and LNG may be main stream.
