Experiments on Black Liquor Splashplate Nozzle Performance

摘要

A series of experiments were performed with an industrial-scale black liquorsplashplate nozzle in May and June 1995 at the Sunila pulp mill in the recovery boiler SK11. The experiments took place in a spraying chamber next to the recovery boiler. It was of interest to study the liquor sheet disintegration process as well as the resulting drop size at a fixed temperature below the liquor boiling point. A total of three different mass flow rates were used. The full-scale experiments were afterwards repeated on small scale in the laboratory environment which made it possible to study the liquid sheet disintegration process thoroughly. The objective was to compare these two experimental settings and to find out whether small-scale experiments can be used in predicting the full-scale spraying characteristics.