Coal blending. Meeting specifications

Coal blending inherently means homogenizing a mixture of coals so that the properties of the blend meet some specifications for maintaining power plant performance and emission requirements. In practice, however, coal blending is, at best, coal mixing. The degree of blending sophistication required depends on the reason for coal blending in the first place. If it is to maintain fuel characteristics that will diminish the change of slagging and fouling, then some swings in variability may be tolerated at some power stations. However, if emissions limits are the issue, then more sophistication may be needed.