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Wet scrubber dust collector

Klaus Wet Scrubber KWC Series

Wet scrubber dust collector

  • Wet scrubber collector is a facility that dissolves harmful gases by making them in contact with a solution being sprayed in the scrubber, or removes the harmful gas and odor by liquefying them through chemical reactions.
Purpose of use
  • Where fumes are generated from the process such as plating, and surface treatment, the cleaning process of semiconductors, the process of acid and alkali gas generation, the process of floating fine particulate matter generation, harmful gas and odor generation at the chemical plant, etc.
Features
  • Simultaneously removes dust, harmful gases and odors
  • Can handle combustible, explosive dust.
  • No concern for re-scattering of collected dust.
  • Stable collection efficiency against fluctuation of gas flow rate
  • Toxic gas of high concentration can be handled.
  • Hot gas can be treated.
  • Waste gas may cause water pollution problem.
Selection of absorbent liquid for pollutants
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Classification Contaminants Adsorbent Reaction equation Bussiness classification
Base Ammonia
[NH₄]		 H₂SO₄ HCl NaOCl 2NH₃ + H₂SO₄ → (NH4)₂SO₄
NH₃ + HCl →NH4Cl
2NH₃ +3NaOCl → N₂ + 3NaCl + 3HO 		Livestock, waste treatment plant, poultry plant, manure treatment plant, etc
Trimethylamine [(CH3)3N] H₂SO₄ HCl NaOCl (CH₃)₃N + H₂SO₄ → (CH₃)₃N․H₂SO₄
(CH₃)₃N + HCl → (CH₃)₃N․HCl
(CH₃)₃N + NaOCl → (CH₃)₃NO․NaC		 Livestock agriculture, starch manufacturing, sewage treatment plants, etc
Acid Hydrogen sulfide [H2S] NaOH NaOCl H₂S +NaOH → Na₂SO₄ + H₂O
Na₂S + H₂O → 2NaSH
H₂S + 2NaOH → Na₂S + 2H₂O
Na₂S + 4NaOCl → Na₂SO₄ + 4NaCl
Na₂S + NaOCl + H₂O → S + NaCl + H₂↑		 Starch manufacturing business, hot topic market, leather treatment plant, waste treatment plant, manure treatment plant, etc
Methanethiol [CH3SH] NaOH NaOCl CH₃SH + NaOH → CH₃SNa + H₂O
2CH₃SH + 6NaOCl → 2CH₃SO₃ + 6NaCl +H2↑		 Pulp factories, sewage treatment plants, etc
Neutral Dimethyl disulfide [(CH₃)₂S] NaOCl (CH₃)₂S + 3NaOCl → (CH3)₂SO₃ + 3NaCl excreta treatment plant, waste treatment plant, etc
Dimethyl disulfide [(CH₃)₂S₂] NaOCl (CH₃)₂S₂ + 2NaOCl → (CH₃)₂SO₂ + 2NaCl excreta treatment plant, waste treatment plant, etc
Acetaldehyde [(CH₃)CHO] NaOCl (CH₃)CHO + NaOCl + NaOH → (CH₃)COONa + NaCl + H₂O Acetaldehyde manufacturing plant, complex fertilizer manufacturing plant, etc.
Styrene [C₆H₅] NaOCl C₆H₅CHCH₂ + HClO → C₆H₅CHOHCH₂Cl FRP product manufacturing plant, styrene manufacturing plant, etc
Type of filling
  • Tellerette : Typical wire structure filler is mainly used as a gas absorption filler because it has a large effective specific surface area, as it does not form a slope during operation. It also has the advantage of maintaining the distribution characteristics of the original liquid down to the lower part, making it difficult for drift to occur. In most cases, therefore, the installation of a liquid redistributor can be omitted, even if the charging height is high.
Design Condition
Category Range
Air tower speed (m/sec) 1.2~2.2
Pressure loss (mmAq) 50~200
Liquid gas ratio (L/m2) 1~3
Fill (mm) 500, 3 unit
Filling Size Under top diameter of 1/8
Caution
  • The spray should be distributed evenly enough to avoid channeling.
  • The operating point should be between 40 % and 80 % of the flood point.
  • The correlation between the diameter and height of a tower must be greater than 2.5 to prevent cavitation.
Technical Specifications
  • Site visit needed before installation