Abstract
Dust explosions are a major hazard in many industrial processes. In operations such as crushing and grinding, conveying, classifying and storage, an explosion may occur in the presence of combustible dusts or powders. Such explosions can result in loss of production, process equipment and quite possibly human life. This paper is oriented on design of dust dispersion system for explosion chamber KV-150 M2. The explosion chamber KV-150 M2 is designed to measure the explosion parameters of dispersed dusts.
Highlights
Many industrial accidents are imputable to explosions of flammable dusts. Protection from such accidental explosions requires the knowledge of flammability and explosion parameters of dust/air and/or dust–gas/air mixtures
Dust explosions in the process industries practically always start inside process equipment such as mills, dryers, mixers, classifiers, conveyors, and storage silos and hoppers
For any given dust type the ease with which dust clouds ignite and the rates with which they burn, vary considerably with factors well known in powder science and technology
Summary
Many industrial accidents are imputable to explosions of flammable dusts. Protection from such accidental explosions requires the knowledge of flammability and explosion parameters of dust/air and/or dust–gas/air mixtures. The air flow is led from the compressed air container to the bottom of the nozzle and it reflects on the dust sample This causes raise the dust cloud inside the chamber. With the Rebound Nozzle (Fig. 5) and the Dahoe nozzle (Fig. 2), the dust can be stored inside the chamber It is poured around the nozzle, and the dispersing occurs when the compressed air enters the nozzle. The problem is mainly with fibrous dust, which is deposited inside the perforated tube and has not been sufficiently dispersed inside the chamber This finding was undesirable and led to the development of an open system of nozzles under the name of a rebound nozzle. The compressed air is reflected from the deflector and causes dispersing of dust [12]
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