Design Of Fixed After-heating Burners

Design Of Fixed After-heating Burners

Fixed after-heating burners are combustion equipment used to provide a second stage of thermal processing to already partially combusted gases. The purpose of such equipment is to burn off any remaining volatile components and ensure complete combustion, which ultimately results in a cleaner and more efficient combustion process. Fixed after-heating burners are commonly used in industrial applications where the primary combustion chamber cannot achieve the required temperature, or where the combustible gases have a high moisture content. The design of fixed after-heating burners plays a critical role in their effectiveness and efficiency. A good example of this equipment should have the following characteristics: 1) Adequate residence time: The burner should be designed with sufficient residence time to ensure complete combustion of residual volatile components. The length of the burner should be proportional to the amount of residual components present in the gases. 2) Proper mixing: Proper mixing of combustion air and gases is essential to achieve a complete burn. The burner should be designed such that the gases and combustion air mix homogeneously with minimum pressure loss. 3) High turndown ratio: The burner should have a high turndown ratio to allow operation at different flow rates while maintaining good combustion efficiency. 4) Optimum air-fuel ratio: The burner should be designed with an adjustable air-fuel ratio to achieve the desired temperature rise while minimizing excess air. 5) Robust construction: The burner should be constructed of durable materials that can withstand high temperatures, abrasion, and corrosion.

Combustion equipment, Thermal processing, Combustible gases, Residence time, Mixing, Turndown ratio, Air-fuel ratio, Durable materials

— Andrew Campbell

CITATION : "Andrew Campbell. 'Design Of Fixed After-heating Burners.' Design+Encyclopedia. https://design-encyclopedia.com/define/design-of-fixed-after-heating-burners?E=364898 (Accessed on October 14, 2026)"