Exhaust treatment

In the chemical industry, where streams can be much more complex exhaust air treatment systems are provided that allow operation even in the presence of high concentrations of halogenated, sulphuric and phosphorus organic compounds.

The exhausted halogenated and sulphur compounds are usually treated with one or more stages of wet absorption (scrubbers) and with a quenching section. 

Scrubber applications in the Inorganic chemical industry are dealing with the elimination of: 

  • Hydrogenated halogens
  • Amines
  • Ammonia
  • NOx
  • Nitric acids
  • SOx
  • Sulphuric acids
  • Sulphides
  • Silanes
  • Siloxanes
  • Silicium oxide
  • Halogenic silica
  • Boron
  • Hydrogenated boron
  • Boracid
  • Carbondioxide
  • Phosphoric acids
  • Halogenated phosphor
  • Phosphoric oxides
  • Titanium oxide
  • Halogenated titanium
  • Phosgene

With the incineration of chlorine containing wastes or with reaction processes where hydrochloric acid is produced, exhaust gases with relatively large amounts of hydrogen chloride are generated which have to be separated. For the purpose of cleaning these exhaust gases a gas scrubbing plant offers the most economical solution.

The nonferrous and ferrous metallurgy is concerned with the  extraction and processing of ores and the production of  nonferrous / ferrous metals and their alloys.  During these  processes, by-products occur which include dust of metal  oxides or mineral fertilizers and undesirable gaseous components  which must be cleaned before released to the environment