Design method for heating temperature of pulverized coal airflow

The invention belongs to the technical field of pulverized coal boiler combustion, and discloses a design method of pulverized coal airflow heating temperature. According to the method, a thermogravimetric analysis method is adopted, a change curve-TG curve of the weight of a pulverized coal sample along with the temperature is obtained, and an intersection point of a tangent line of an inflection point of the TG curve and an initial base line is the pulverized coal ignition temperature Tignion; the relation between the safe operation temperature of the pulverized coal pipe and the ignition temperature of the pulverized coal is T pulverized coal pipe = Tignit-100; a field measurement method is adopted, and the initial temperature of the corresponding pulverized coal airflow when the ignition distance of the pulverized coal airflow is 0.5 m is selected as the safe operation temperature T combustor of the combustor; and comparing the safe operation temperature T of the powder pipe with the safe operation temper