Metal dusts explosion hazards and protection

Many industrial processes handle, use, or produce metallic particles small enough to explode in air, thus posing severe explosion hazards. Finishing operations, for example, create very fine particles and have been involved in a growing number of accidents in recent years. New emerging processes, such as 3D printing, are being rapidly...

Scaling up metal dusts deflagrations severity

Explosion hazards of aluminum finishing operations

Metal dust deflagrations have become increasingly common in recent years. They are also more devastating than deflagrations involving organic materials, owing to metals' higher heat of combustion, rate of pressure rise, explosion pressure and flame temperature. Aluminum finishing operations offer a particularly significant hazard from the...

Igniter-induced hybrids in the 20-l sphere

Dust explosibility is traditionally described by two parameters, namely the maximum explosion pressure, P_max, and the deflagration index, K_St, usually determined through testing in a closed, pressure-resistant spherical vessel, either 20 L or 1 m³ in volume. These parameters constitute key variables in the...

Van Three Mile Island tot Piper Alpha: veiligheidsmanagement en veiligheidssystemen, een overzicht van Engels- en Nederlandstalige literatuur, Deel 2, de periode 1979-1988

Dust explosions in spherical vessels: Prediction of the pressure evolution and determination of the burning velocity and flame thickness

A well known limitation of the ’cube-root-law’ is that it becomes invalid when the flame thickness is significant with respect to the vessel radius. In the literature flame thicknesses in dust-air mixtures ranging from 15 to 80 centimeters have been reported [1], which exceed the radii of the 20-1itre sphere and the 1 m3 vessel. Therefore we...

Environmentally acceptable incineration of chlorinated chemical waste: Review of theory and practice

Chlorinated hydrocarbons in the form of chemical waste, represent a threat to the environment and public health of the world. Their proper handling, removal and destruction is critical to long term safety. Increasingly strict government legislation is leading to an increase in the quantity of chlorinated chemical waste requiring responsible...

Phase and corosion studies of the ammonia - carbon dioxide - water system at the conditions of the hot gas recirculation process for the synthesis of urea