Process Chemistry and Mass Transfer Engineering
Gas Washing Towers (Scrubber)
High Efficiency in Industrial Emission Control
A core environmental-protection technology in metal finishing, chemicals, mining and power generation: it neutralises acidic, alkaline or toxic gases that must not be released to the atmosphere by transferring them from the gas phase to the liquid phase. Absorption, chemical neutralisation and particle capture work at the same time.
The main purpose of scrubber systems is to maximize the contact surface area between the dirty gas stream and the washing liquid (absorbent). The transition of gases such as SO₂, HCl, NH₃, Cl₂ to the liquid phase is governed by Henry's Law and diffusion principles.
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Technical Advantages
- Packed Tower Design: High surface area/volume ratio with counter current system, Raschig/Pall rings or saddle type fillers.
- Venturi Scrubber Option: Atomises the scrubbing liquid with high gas velocity, suited to gases with heavy particle and dust loads.
- Spray Tower: An alternative with low pressure loss for pre-washing or hot gas cooling (quench) without the risk of clogging in very high dust loads.
- Mist Eliminator: Special mesh structures that prevent liquid droplets from escaping into the atmosphere during gas release.
- Modular Design: Flexible configuration suitable for capacity increase in facility expansion.
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