Burners: Free-Jet Applications
This particular natural draft application was a Stabilizer Reboiler Vertical Cylindrical Heater (35 feet tall, 10.67 meters) with a four-burner configuration. In this application, the customer wanted ultra Low NOx numbers. The heat density in the furnace was over 302,000 Btu/Hr-ft2, with the total heater duty of 35.2 MMBtu/hr. Once the heater was lined out in accordance with the operating parameters, the NOx was measured at 0.0171 lbs/MMBtu (12.2 ppm) by a third party with only trace amounts of CO (less than 1.0 ppm).
This particular natural draft application was a vertical cylindrical FCCU Charge Heater (43 feet tall, 13.1 meters) with an eight-burner configuration. In this application, the customer wanted ultra Low NOx numbers. The heat density in the furnace was over 302,400 Btu/Hr-ft2 with the total heater duty of 57.6 MMBtu/hr. Once the heater was lined out in accordance with the operating parameters, the NOx was measured at 0.0148 lbs/MMBtu (10.6 ppm) by a third party with only trace amounts of CO (less than 1.0 ppm).
This particular forced draft application had 525°F (274°C) air preheat and was a vertical cylindrical GDU Charge Heater (61 feet tall, 18.6 meters) with a twelve burner configuration. In this application, the customer wanted ultra Low NOx numbers. The heat density in the furnace was over 277,240 Btu/Hr-ft2 with the total heater duty of 156 MMBtu/hr. Once the heater was lined out in accordance with the operating parameters, the NOx was measured at 0.0149 lbs/MMBtu (10.7 ppm) by a third party with only trace amounts of CO (less than 1.0 ppm).