Innumerable safety and control valves are used in petro-chemical, chemical and electricity power generating plants where steam, gas and other vapours are vented into the atmosphere. Opening of these valves is accompanied by extremely high levels of noise (up to 160 dB(A)).
This is where the Vent Silencers play an important role in reducing noise pollution and eliminating the risk of operator hearing damage. The design features of QE Vent Silencers include diffusers and expansion chambers, where the pressure of the vapours is reduced to atmospheric pressure, and absorption section where sound energy is converted to friction heat. QE Vent Silencers are typically constructed with carbon and stainless steel, but higher alloy materials can also be provided for applications within high temperatures and corrosive environments.
QE Vent Silencer performance.
Power Service 80-300 t/h, 105-120 dB(a)
Medium Industrial Service 1-100 t/h, 85-90 dB(a)
Special Applications 1-20 t/h, 70-85 dB(a)
A typical vent silencer consists of a diffuser, expansion and absorber section. The end result is the frequency of the noise is changed to allow absorbtion. The shock waves are eliminated. The Vent Silencer is suitable for applications involving vapour, steam or compressed gases.
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