Estimation of power consumption when trapping finely-dispersed particles in a separator with coaxially-arranged pipes

V. E. Zinurov, A. V. Dmitriev, G. R. Badretdinova, R. Ya. Bikkulov, I. N. Madyshev
2021 Вестник Иркутского государственного технического университета  
This article sets out to estimate power consumption when trapping finely-dispersed particles of silicon dioxide using a separator with coaxially-arranged pipes, as well as the efficiency of such an installation. To this end, a numerical simulation of the movement of a gas flow with finely-dispersed particles of silicon dioxide through a separator with coaxial pipes was carried out in the ANSYS Fluent software. During the experiments, the inlet gas flow rate varied from 5 to 10 m/s, while the
more » ... 0 m/s, while the width and height of the rectangular slit ranged 2.1-8.7 and 10-30 mm, respectively. It was shown that the maximum efficiency of collecting finely-dispersed silicon dioxide particles and the minimum power consumption required for pumping the gas flow through the installation largely depends on the formation of a stable vortex structure in the interpipe space. The research showed that the optimal inlet gas flow rate equals 7.5 m/s. At this rate, the efficiency of particle collection corresponds to higher rates with a devia tion of ± 6%. In this case, the pressure loss is 1.74 times lower than that at higher rates. In order to achieve an efficiency of at least 90% with the height of the rectangular slit from 10 to 30 mm, the Stokes numbers must correspond to values of more than 50. The power consumption required for pumping a gas containing silicon dioxide particles through a separator equipped with coaxial pipes comprises from 1.9 to 31.2 W at the inlet gas flow rate of 7.5 m/s. In this case, the parameters of the rectangular slit are as follows: width - from 2.1 to 8.7 mm, height - from 10 to 30 mm. The use of separators with coaxially-arranged pipes in technological lines based on plasma technologies can become an alternative to installations for fine gas purification.
doi:10.21285/1814-3520-2021-2-196-206 fatcat:fgwoecmrqjhs5gqxqbeij6hhiu