flash fire
2.It showed that the Froude number was reasonable, and the approach to use reduced-scale model technique for studying the natural smoke filling with pre-flash fire is practicable.
6.Based on the analysis on risk factors in the production system of polypropylene workshop in a chemical plant,the fire explosion risk in such main dangerous units as polymerization and flash distillation,raw material refining,tail gas reclaim and northern zone of canned propylene is assessed by the application of the method of Dow Fire Index V.7.0.And according to the result of the assessment,safety countermeasures for accident prevention are put forward.

