| 摘要 |
FIELD: power industry. ^ SUBSTANCE: method for determining slagging characteristics of ash for power station coals at flame combustion involves low-temperature ashing of the tested coal, manufacture of test sample from ash for investigation of physical ash properties at heating within temperature of 800-1300C with simultaneous fixture of deformation characteristics of the sample by means of measuring tool. Heating of sample in the above temperature interval is performed at constant heating rate of not less than 1.1 deg/sec, during which there determined is dependence of deformation speed of the sample on temperature of its heating; at that, temperature of beginning of ash slagging corresponds to maximum speed of sample deformation, and temperature of load-carrying flue gases at the furnace outlet corresponds to minimum deformation speed. Two to four test samples are subject to tests, and temperatures of the beginning of slagging and load-carrying flue gases at the furnace outlet are determined as arithmetic average of the appropriate values. ^ EFFECT: improving accuracy of determination of slagging characteristics of ash. ^ 2 cl, 4 dwg |
