Highlighting the Importance of the Pyrolysis Step on Dust Explosions

被引：11

作者：

Dufaud, Olivier ^{[1
]}

Khalili, Imad ^{[1
]}

Cuervo, Nicolas ^{[1
]}

Olcese, Roberto ^{[1
]}

Dufour, Anthony ^{[1
]}

Perrin, Laurent ^{[1
]}

Laurent, Andre ^{[1
]}

机构：

[1] Nancy Univ, CNRS, Lab React & Genie Proc, F-54001 Nancy, France

来源：

CISAP5: INTERNATIONAL CONFERENCE ON SAFETY & ENVIRONMENT IN PROCESS & POWER INDUSTRY, PT 1 | 2012年 / 26卷

关键词：

IGNITION;

D O I：

10.3303/CET1226062

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In order to highlight the influence of the pyrolysis step in organic dusts explosions, experiments have been carried out on wheat starch powders and on their pyrolysis gases. Starch pyrolysis has been studied and a representative composition of the pyrolysis gases has been used for explosion tests. Both the particle size distribution and the presence of few percents of pyrolysis gases, as low as 1 %v., induces changes in the rate-limiting step of the combustion reaction, which implies a significant decrease of the minimum ignition energy (MIE) and an explosivity increase. Moreover, the influences of pyrolysis gases are effective both on the combustion kinetics, but also on the flame hydrodynamics. A model based on the flash pyrolysis of organic compounds has been developed and validated by using gas chromatography.

引用

页码：369 / 374

页数：6

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