Gas purification techniques
Acid gas scrubber
|An acid scrubber works at low pH as a result of which base components become captured. Salt is formed that way. On the basis of density and/or conductivity a part of the carrier liquid sluiced. The sluice can contain salts up to 15% and after purification is drained or evaporated for re-using. The dosage of the acid is regulated by means of pH-control. The pH that is sent trough the scrubber are in most of the cases are between pH 3 and 6. A generally used acid, from economic reasons, is sulphuric acid (H2SO4). For specific applications, for example for the captured of NH3, also nitric acid (HNO3) is used. Ammonium nitrate is formed that can be used can as manure. Due to there nature its possible to capture amines and also esters (fragrance components) in an acid scrubber.|| |
At strongly acid degasses with for example has high concentrations of HCl
The disadvantages are:
The acid scrubber is mainly applied in the manure processing -, natural degeneration -, treatment of waste -, manure -, pharmaceutically -, foundry -, chemically -, fish food -, sterilization (ethylene oxide removal) industry.
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