Discussion on determination method of unslaked lime activity for dry flue gas desulfurization

When measuring the activity of unslaked lime by "DL/T 323-2010 method for determining the activity of unslaked lime for dry flue gas desulfurization", it was found that different results of unslaked lime activity were obtained by placing thermometers at different positions in thermally insulated container. The improvement measures of the shape of thermally insulated container, the position of thermometer, the position of stirrer and the sample injection equipment were put forward. The improved experimental equipment and method showed that the activity data of quicklime had a good reproducibility at ±1℃. The data detected by the improved experimental method can be of great significance to production.