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Explosion risk evaluation during production of coating powder
Gang Li1, Chunmiao Yuan, Baozhi Chen
1Fire & Explosion Protection Laboratory, Northeastern University, Shenyang 110004, China. lig@smm.neu.edu.cn
Journal of Hazardous Materials
|June 19, 2007
Summary
Coating powders, used industrially, pose an explosion risk. This study determined their explosibility parameters, revealing they are explosive but require higher ignition energy than common dusts. Recommended protection methods include isolation and venting.
Area of Science:
- Industrial Chemistry
- Materials Science
- Chemical Engineering
Background:
- Powder coatings are extensively used across industries for equipment corrosion prevention.
- A significant knowledge gap exists regarding the explosion hazards associated with coating powders, particularly among Chinese manufacturers.
- Understanding dust explosion risks is crucial for industrial safety.
Purpose of the Study:
- To determine the explosibility parameters of a representative coating powder.
- To assess the explosion hazard posed by coating powders in industrial settings.
- To propose effective explosion protection strategies for coating powder handling and production.
Main Methods:
- Experimental determination of explosibility parameters for a specific coating powder.
- Comparative analysis of ignition energy against standard dusts like coal and corn starch.
- Development of a systematic explosion protection methodology based on experimental data.
Main Results:
- The investigated coating powder was confirmed to be explosible.
- The ignition energy required for the coating powder is higher compared to common dusts (e.g., coal powder, corn starch).
- Experimental data provides a basis for quantitative risk assessment.
Conclusions:
- Coating powders present a tangible explosion hazard that requires careful management.
- While explosible, the higher ignition energy suggests specific handling precautions may be sufficient.
- A proposed protection strategy emphasizes explosion isolation and explosion venting as primary safety measures.
