(41ai) Investigating the Flammability Hazard of Charcoal Fines | AIChE

(41ai) Investigating the Flammability Hazard of Charcoal Fines


Bagaria, P. - Presenter, Texas A&M University
Bellair, R., The Dow Chemical Company
Gaal, S., The Dow Chemical Company
Simmons, K., The Dow Chemical Company
Nab, J., The Dow Chemical Company
Charcoal has many applications (fuel, reductant, filter, catalyst, adsorbent etc.) and is widely used across various industries. During its handling/processing, charcoal may yield fine particles (micron scale) that can accumulate to form a dust layer/pile over time. This can cause a significant dust deflagration/flammability hazard. Studies have been conducted to investigate the flammability hazard of charcoal fines; however, they lack sufficient information (particle size, type of charcoal, moisture etc.) and show contradictory information. This investigation studied the flammability hazard (cloud ignition sensitivity (MIE), pile runaway oxidation (fire/smoldering)) of charcoal with different properties (ash content, particle size). Results show that charcoal dust cloud is not ignition sensitive (MIE >1000mJ), however a charcoal dust layer/pile can be prone to runaway oxidation (fire/smoldering) under certain conditions. Other properties (MAIT, LIT etc.) may be required to aid holistic risk assessment.