Improvement of Burner System in Oil-fueled Tower Drier

The burner system in oil-fueled tower drier has the disadvantages of low temperature control accuracy, higher failure rate and higher oil consumption, therefore, its oil pipeline was improved. The temperature control of burner was changed from single-loop into cascaded control; according to oil flow and the contents of detected chemical components in exhaust gas, the combustion air volume was automatically adjusted to keep air and oil in good balance. The application results indicated that the response speed and stability of technological air temperature were improved obviously, and the flame signal of burner was intensified and stable. The improved pipeline system ran stably, ignition failure or flameout reduced from over 2 times per month to zero. The time needed to lower technological air temperature by 30℃ reduced from more than 20 to about 10 minutes during brand changing. Diesel oil consumption decreased, and production efficiency increased.