Fire & Explosion Protection

Dust Explosion Prevention and Protection in Food and Pharmaceutical Industries

In the food and pharmaceutical Industries many materials represent an extreme hazard to personnel and plant in the event of a combustible dust explosion. Design decisions taken early in a project allow to optimize protection.



dust explosion
Materials that are common to the Food and Pharmaceutical Industries such as starch represent an extreme hazard to personnel and plant in the event of a combustible dust explosion. In a fraction of a second, pressures that exceed the design pressure of process equipment and piping are achieved, reaching over 10 bar in the case of starch.

These destructive forces are generated by rapid combustion which itself results in flame propagation leading to large scale secondary dust explosions. The emphasis must be on prevention of the primary dust explosion; this paper explores the ‘explosion pentagon’ which relates the required factors of dust – oxygen – dispersion – confinement – ignition and how to manage them to achieve safe plant operation.

Even with prevention strategies in place, many dusts are easily ignited by virtue of their low ignition energy or the nature of the. The Food and Pharmaceutical Industries employ many specialized processes that must be conducted indoors under controlled conditions. This paper discusses design decisions that can be taken early in a project to optimize combustible dust protection with the lowest budget covering common pieces of process equipment including storage bins, silos, dust collectors, ovens and dryers, and milling systems.

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PROCESS - Chemie | Pharma | Verfahrenstechnik

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97082 Würzburg

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