Method and system for adjusting flame center of pulverized coal fired boiler based on hearth temperature field distribution

The invention relates to a pulverized coal fired boiler flame center adjusting method and system based on hearth temperature field distribution. The method comprises the steps that 1, temperature field distribution data of the whole field of the cross section of a hearth of an octagonal double-tangent circle boiler are obtained; step 2, according to the temperature field distribution of the whole field of the cross section of the hearth, carrying out gridding division on the temperature field distribution on the width and depth of the hearth, extracting the temperature at the central point of each grid to form a hearth temperature data matrix, and dividing the hearth temperature points in the hearth temperature data matrix into a left area and a right area, the left and right cutting circles correspond to the octagonal double-cutting-circle boiler respectively; 3, flame centers of the left area and the right area of the left tangent circle and the right tangent circle of the octagonal double-tangent-circle bo