A venturi scrubber works through a constricted throat design that creates high gas velocity and turbulence:
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Gas Flow:
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Contaminated gas enters a converging section
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The narrowing passage accelerates the gas stream
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Gas velocity is highest at the throat (narrow point)
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Liquid Contact:
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Scrubbing liquid is injected at or before the throat
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High gas velocity breaks liquid into fine droplets
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Creates intense turbulent mixing of gas and droplets
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Particle Collection:
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Fast-moving droplets trap particles through impact
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Larger throat velocity = better collection efficiency
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Best for capturing particles 0.5-5 microns in size
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Final Stage:
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Gas-liquid mixture enters diverging section
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Gas slows down, pressure recovers
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Droplets with captured particles are collected
The main tradeoff is between cleaning efficiency and energy cost - higher throat velocities clean better but require more power to overcome pressure drop.
Would you like me to elaborate on any of these aspects?
