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Both natural- and forced-draft burners are utilized in millions of process heating applications throughout the world. They are applied across many industries to heat, process, refine, store and transport the myriad of products that we rely upon each day.
Upgrading the controls on an existing industrial thermal fluid heater to a linkageless control system will increase efficiency and thereby maximize the return on investment.
The burner is the true driver of fuel use and costs in a boiler. Over time, a burner’s moving parts wear out, and the burner loses its ability to keep tight control of the fuel-to-air ratio.
While nozzle-mix burners eliminated flashback, another concern was on the rise: NOX. Staged combustion and controlled airflow and gas flow allow efficient combustion for industrial process heating equipment.
While nozzle-mix burners eliminated flashback, another concern was on the rise: NOX. Staged combustion and controlled airflow and gas flow allow efficient combustion for industrial process heating equipment.
Industrial burner users realized they needed a burner free from the limitations of flashback, liftoff and flammability limits. This goal could only be accomplished by bringing the air and gas to the process as separate streams, and the nozzle-mix burner was resurrected.
Industrial burner users realized they needed a burner free from the limitations of flashback, liftoff and flammability limits. This goal could only be accomplished by bringing the air and gas to the process as separate streams, and the nozzle-mix burner was resurrected.
This five-part series continues with more on the evolution of industrial premix burners. With early premix burners, the flashback limitation often forced the burner to be operated at a higher firing rate than the process needed. Dilution or secondary air solved that problem for many processors.
This five-part series continues with more on the evolution of industrial premix burners. With early premix burners, the flashback limitation often forced the burner to be operated at a higher firing rate than the process needed. Dilution or secondary air solved that problem for many processors.
Are you ready for a lesson about premix burners for industrial process heating? Before I dig more deeply into premix burners themselves, I'll look at one more device that can be used to supply them with a combustible air-gas mixture -- the fan mixer.
I'll wrap up this series of columns with a look at some more ratio control systems. These are less used on ovens, dryers and low temperature processes, but you may run into them where special conditions require their unique features.
Now that you understand the ways combustion air-fuel ratios can be controlled, I'll describe the three most common systems used to achieve that control: linked valves, cross-connected regulators, and fixed air systems.