Dry lime-slaking plant and process for dry lime-slaking, as well as a flue gas desulphuration plant with such a dry-lime slaking plant, and process for flue gas desulphuration

摘要

In a dry lime-slaking plant, an external cooling device (16) is provided, by means of which the solids fraction recycled into a reverse-flow vortex agitator (2) and precipitated by a coarse separator (8) downstream thereof is cooled. As a result, less water has to be injected than in previously known plants for maintaining the correct temperature for the slaking step in the reverse-flow vortex agitator (2), so that temperatures below the dew point are avoided and highly reactive hydrated lime is produced. …IMAGE…