scope:

This guideline provides information regarding the design, construction and operation of high-temperature gas filters operating at temperatures of up to 1000 °C. Information contained in the diagrams and tables is provided by way of example and, in view of the numerous interactions betweenindividual systems and exhaust gases, can be applied only to the cited applications.

High-temperature gas filters can be employed wherever process control prevents cooling before or during filtration - i.e. before the next process step - or where cooling the gases before filtering would be uneconomical.

This applies to:

• power plant processes: woodchip combustion
• gasification of waste and biomass, e.g. wood
• incineration of household and industrial waste, clinical waste and low-level radioactive waste, e.g. protective clothing, equipment
• recovery of precious metals and other valuable resources from catalysts
• production of catalysts
• separation of calcium carbide in calcium carbide production
• calcining processes, e.g. nanopowder production (e.g. pigments) or aluminium oxide
• metal production, e.g. magnesium
• dust extraction from furnaces and fluid-bed processes, e.g. in the glass industry
• aluminium sulphate production
• foundry sand preparation