Effects of Carryover Liquid Content and Particle Size on Deposit Removability in Kraft Recovery Boilers

摘要

The effective removal of fireside deposits by sootblowers in a kraft recovery boiler is critically important for maintaining the stable operation of the boiler. Results of a laboratory study suggest that particles with a high liquid content form more tenacious deposits than particles with a low liquid content. Deposits formed from 150-300 μm particles are relatively easy to remove if the liquid content of particles is below 40%, but become much more difficult to remove once the liquid content exceeds 40%. At a given liquid content, deposits formed from smaller particles are more difficult to remove than those formed from larger particles.