Thermal designs for industrial heating reduce emissions

02 February 2021

Gas-fired radiant tube furnaces provide indirect heat for several industrial heating applications where a controlled atmosphere is required, such as heat treatment furnaces, steel and aluminum processes. They eliminate the introduction of carbon dioxide, water vapor and other fugitive emissions, which are unavoidable in direct flame heating.

Saint-Gobain Performance Ceramics & Refractories has introduced additive manufactured ceramic materials and components that address critical design criteria for advanced low-emission burner designs. The AMASIC-3D® manufacturing platform has enabled the production of siliconized silicon carbide (SiSiC) thin-walled structures with optimized geometries, including SpyroCor®, PyroCor®, HeatCor® and NOx Buster®

SpyroCor inserts are installed in the exhaust leg of a radiant tube. Its twist design and silicon carbide formulation enhance heat transfer by re-radiating energy into the furnace. This maximized throughput reduces energy consumption rates and lowers gas emissions.

PyroCor radiant tube inserts are specifically designed to be positioned near the burner nozzle in U- and W-type radiant tubes and eliminate hot spots.

NOx Buster products are designed to induce recirculation of flue gases within the radiant tube, lowering the flame temperature and reducing the generation of NOx — nitrogen oxide gases — by up to 50%.

HeatCor inserts can be applied to the exhaust leg. The inserts are made from thin-wall silicon carbide with a unique twisted-channel design, offering a 5:1 compact surface area and a thermal conductivity greater than 125 W/m-K.



Details Courtesy of Saint-Gobain.