What is the source of primary and secondary air to the premix burner?
The main burner combustion blower, if properly sized, will supply both the primary and secondary air. The oxidizer must control the flow of combustion air and auxiliary fuel regardless of the amount of the makeup of the waste gas being feed to the chamber. We have designed the HTT Systems with an oversized burner, which has a very high turndown ratio. For the system to operate properly, the combustion air must be adjusted until the exhaust has a minimum O2 content of 8-10% (100% excess air). Below 8%, the system may not properly destroy the waste gases and may even smoke. The burner is sized larger to provide all of the combustion air necessary for the auxiliary fuel and for the waste gas stream combined, with a good safety margin. Two temperature controllers will adjust the fuel and air separately. 3. How does the HTT system control the secondary air in high VOC concentrations streams? We have designed a system that will control the secondary air and fuel separately. By adding only as