Through in depth on-site experience, Combustech designs regenerative combustion systems with minimal maintenance requirements and meets various needs of customers and different fields by altering the flame shape of the combustion system.
Characteristics of Regenerative Combustion System
Operation of regenerative burner system
When one burner(burner A) from the pair is in operation and forms the flame, the other burner(burner B) inhales the high temperature combustion products into the regenerator(regenerative heat exchanger) and stores the waste heat from the high temperature exhaust gas.
After a certain switching time (typically about 40s), the roles of the two burners are changed, and the burner, which formed the flame in the previous operation, inhales the high temperature exhaust gas to store the heat, and the burner that stored the heat uses it to preheat the combustion air for combustion. This switching process is performed through the switching action of the switching valves, which can be operated for more than 6,000,000 cycles without maintenance.
Energy saving effect of the regenerative burners
The total fuel savings (50% compared to cold air combustors / 25% compared to hot air (500 ℃ preheat)) differ depending on the design of the furnace, so accurate effects can be presented after analyzing the system by individual industries.
NOX and pollutants of the regenerative combustion system
Regenerative combustion system lowers the NOx production without additional equipment such as EGR or FGR by specially designed burner baffle, port and air/fuel injection technique.
The R-Series burners (without EGR or FGR) has a 50~ 75% NOx emissions reduction compared to other low NOx burners / regenerative burner.