A direct-fired afterburner is helping a specialty coffee roasting company in the San Diego area handle emissions from its aromatic but potentially overwhelming product. Rancho Cucamonga, Calif.-based Pro-Environmental Inc. designed and installed the pollution control equipment for a ~100 lb (45 kg) roaster, but other sizes are available.
Owners of the 224 units in a new condominium complex built next to the coffee roasting company lodged complaints about the coffee roasting odors, prompting the roasting company to add the equipment. The condominium complex included balconies located within 15' of the afterburner stack, and the proximity likely prompted the concerns. Since the afterburner was installed, the roasting company has not received any odor complaints.
One of the features of the afterburner is that the specially designed in-duct burner eliminates the need for a combustion air blower. This saves fuel eliminating the need to heat the combustion air, and it allows the unit run quieter.