Lubrication oil reservoir mist elimination

As lubrication exists from a bearing, a certain amount of the oil is aerated, forming a mist of aerosol-size par-ticles. These particles are very small (most less than 1 micron dia.) and their capture is difficult. When air pollu-tion standards were less stringent, oil-mist emissions from lubrication reservoirs, gear boxes and ventilation systems were often overlooked, ignored, piped to the turbine exhaust for wide dispersion, or even considered to be uncontrollable. Early attempts to remove oil mist from the vapor failed because of insufficient knowledge of the mist particles´ size and flow characteristics plus the inherent collection limitations of the internal mist elimi-nators used. (Extract from ASME 90-GT-183).

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