Experimental investigation of a one-level eight-channel cyclone-separator incorporating quarter-rings

Abstract

The main aim of this investigation was an experimental analysis of the air cleaning efficiency in a mock-up next-generation air cleaning device - one-level 8-channel industrial cyclone-separator with quarter-rings - while changing parameters of the inner structure and the assessment of the effects of dispersion of particulate matter. Therefore, the research was carried out in two stages: the first stage covered the analysis of the efficiency of the multi-channel cyclone with particulate matter of <20 and <50 ?m. During the second stage, a cascade impactor was used to measure the particle collection efficiency in the multi-channel cyclone by fractions: PM1, PM2.5 and PM10. Results of the tests with using the cascade impactor were compared to show changes in the PM composition before and after the multi-channel cyclone-separator. According to the obtained experimental data, the one-level 8-channel cyclone-separator collects 70 to 80 % of PM up to 10 ?m in size, 45 to 60 % of PM up to 2.5 ?m in size and 21 to 25 % of PM up to 1 ?m in size.

Experimental Research of Gaseous Emissions Impact on the Performance of New-Design Cylindrical Multi-Channel Cyclone with Adjustable Half-Rings

“…During experimental trials, maximum air purification efficiency values, such as removing a 0-20 µm diameter of wood ash particles from the air (air temperature being 20 • C), have been obtained: using a one-level eight-channel cyclone-84.2%; using the twolevel eight-channel cyclone-84.6%; and using a three-level eight-channel cyclone-84.9%; the average air flow velocity being 16 m/s (Figure 3). The experimentally determined eight-channel cylindrical cyclone's separation efficiency was lower than the one calculated using Equation ( 8) because wood combustion in boiler houses creates ash particles, not only smaller than 20 µm, but that can also be larger [3,29]. In order to measure the gaseous components' impact on an eight-channel, one to three level, multi-channel cyclone with adjustable curvilinear half-rings on efficiency, while removing wood ash particles smaller than 20 µm, a smoke (gas) source was created by burning wood and additionally introducing wood ash to the air duct after the ventilator along the flow direction, using a sprayer, connected to a compressor, creating a 10 bar compressed air flow.…”