主权项 |
1. A method for producing pyrolized coal in which pyrolized coal is produced by pyrolizing raw-material coal, characterized in that the method comprises:
obtaining proximate analysis data and ultimate analysis data on the raw-material coal; deriving a pyrolizing temperature T of the raw-material coal from calculation expressed by formula (1), by using a calorific value A which is one type of the proximate analysis data or which is obtained from the Dulong's formula on the basis of the ultimate analysis data, a fuel ratio B which is based on the proximate analysis data, a hydrogen content C relative to a carbon content which is based on the ultimate analysis data, and an oxygen content D relative to the carbon content which is based on the ultimate analysis data; and setting a temperature at which the raw-material coal is to be pyrolized on the basis of the pyrolizing temperature T of the raw-material coal,
T=t1+aA+bB+cC+dD (1) where t1 is an intercept, a, b, c, and d are coefficients, and t1, a, b, c, and d satisfy 450≦t1≦475, 0.145≦a≦0.155, −640≦b≦−610, 1600≦c≦1700, and −540≦d≦−500, respectively. |