Refrex® heatshields are high-temperature flexible heatshields for surface protection of furnace internals (e.g. process tubes, riser tubes, hangers, and brackets) against too much radiation heat.
Refrex® heatshields comes in two different temperature grades :
Refrex® 1400 Fabric for Maximum Temperature of 1,370°C
Refrex® 1200 Fabric for Maximum Temperature of 1,200°C
Refrex® fabrics are woven with threads made with different roving. The roving is assembled on a specified number of Refrex® filaments with a fibre diameter of 10-12 micron.
Moreover, the heatshields, tie-cords and sewing yarn are made out of 100% Refrex® material, which can withstand up to 1200°C (for Refrex® 1200) and 1370°C (for Refrex® 1400) flue gas temperatures.
All other materials used in the heatshields such as ceramic buttons and insulation materials are also able to withstand these high flue gas temperatures.
Refrex® Heatshield on Hangers Before Firing
Refrex® Heatshield on Hangers After 4 Years of Firing
Refrex® Heatshield Protection from Radiant Heat Installed on a 180° Half Tube
Refrex® Heatshields Protection Against Radiant Heat for Riser Tubes
The Refrex® heatshields are attached with tie-cords, sleeving and ceramic buttons or buttonholes. These accessories make the heatshields easier to removed and reinstalled after inspections.