Patent ID: 9714196
Date: 2017-07-25
CPC Classifications: C04B,F23B,F23C,F23J,F23K,F23N

Claim:
1. A method for controlling an NOx concentration in an exhaust gas in a combustion facility that uses a pulverized coal as a fuel, comprising, in the following order: measuring a reaction velocity of each of a plurality of chars represented by k determining a relationship between the NOx concentration in the exhaust gas and the reaction velocity k blending the plurality of the types of the pulverized coal, to obtain a blended pulverized coal, wherein a blending ratio of the plurality of the types of the pulverized coal is determined by using, as an index, a reaction velocity of the char of the blended pulverized coal, which is represented by k supplying the blended pulverized coal to the combustion facility as the fuel of the combustion facility wherein the reaction velocity of the each of the plurality of the chars, k