Design features of vortex dust collectors

Svetlana Puring,Denis Vatusov,Nicolay Turin,S Jemioło,A Zbiciak,M Krzemiński,M Mitew-Czajewska,M Gajewski

doi:10.1051/matecconf/201711700142

Svetlana Puring, Denis Vatusov + Show 6 more

Open Access

https://doi.org/10.1051/matecconf/201711700142

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Abstract

This article states that during the construction of industrial buildings it is necessary to provide engineering communications (including systems of supply and exhaust ventilation) which ensure uninterrupted production, its technological and environmental safety. It is necessary to use cleaning devices to remove pollutants from ventilation emissions in local exhaust systems. As for devices for removing highly disperse non-sticky dust, it is possible to offer vortex dust collectors, the efficiency of which depends on the design and operating mode. A method is proposed to increase the efficiency of a vortex dust collector, to improve the quality of the purified air, and to reduce energy consumption during air purification by installing watering nozzles in primary and secondary air pipes made in the form of a Venturi tube. In consequence of multidirectional movement of dust particles and sprayed water, active coagulation of dust particles takes place, as a result of which the separation increases. Apart from that, watering dusty air flows leads to the formation of a liquid film on the inner surface of the separation chamber, which prevents dust particles from rebounding off the separation chamber and facilitates their capture and flushing into the collecting hopper

Highlights

Effective functioning of industrial buildings is ensured by the installation of necessary engineering services
In a cyclone the polluted air is supplied through a single inlet, whereas air supply in a vortex dust collector (VDC) is provided through two channels, the lower one and the upper one
The vortex dust collector (Fig. 1) contains a separation chamber, the upper part of which has an axial branch pipe for discharging purified gas and a branch pipe for introducing secondary air, equipped with a Venturi-type device fitted with a nozzle wetting the secondary airflow, which are installed in front of the Venturi tube and meet the air flow [14]

Summary

Introduction

Effective functioning of industrial buildings is ensured by the installation of necessary engineering services. Among many components that ensure the productivity of local exhaust ventilation systems, it is necessary to distinguish air purification devices [1, 2]. The polluted air coming through the lower channel whirls and moves along the axis of the separator chamber upwards, where, under the action of centrifugal forces, dust particles are thrown to the periphery. Through the upper channel, air (contaminated or clean, depending on the design of the device) is fed, which, whirls and moves down along the walls of the separator chamber, strengthening the effect of centrifugal forces affecting the dust particles that having reached the wall of the chamber fall down into the receiving hopper. Unlike cyclones, the use of a VDC makes it possible to achieve effective purification even for highly dispersed particles (dp

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