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| Alert dust hazards, Taiwan has knocked a big alarm |
2015.06.27 evening, New Taipei City, Taiwan Formosa water park in the activities of the party the last 5 minutes of the occurrence of dust explosion accidents, New Taipei City Health Bureau 28 days morning 10 point announced Waterpark list of 516 people were injured, respectively in 39 hospitals accept treatment, which injured up to 194. Because of wearing bathing suit, many of the injured in a large area burn. 4 mainland tourists and 1 mainland Chinese nationals who were enrolled in the study were identified;
Accident again sounded the alarm of the dust hazard. In the face of such harm, whether it is business or commercial charity activities, every enterprise should caution in order to avoid unnecessary damage; suggestion dust pollution or dust hazard equipment using the dust treatment such as production, industrial vacuum cleaners, effectively prevent the generation of such harm; as for everyone to better use and prevent dust substances, the following for everyone to provide some relevant knowledge about dust explosion:
1, what is dust explosion?
Dust in a certain space, encounter heat (fire or high temperature), flame spread instantly in the whole space of the dust mixture, fast chemical reactions release at the same time, more heat, formation of high temperature and high pressure, because this process constantly increasing pressure will produce shock waves and can not be timely release heat, thereby causing an explosion, in shock wave impact force is greater, the explosion will cause greater damage;
2, which dust has explosive
All of a fine powder of the solid material are known as dust, can burn and explosive dust is called combustible dust, the following seven kinds of material dust with combustible and explosive:
A. metal dust, magnesium powder, such as:
B. coal dust;
C. food category, such as: wheat, starch, flour, etc.;
D. feed, such as blood meal, fish meal;
E. agricultural and sideline products, such as cotton, tobacco;
D. forest products, such as paper powder, wood flour;
F. synthetic materials, such as plastics, fuel;
3. The external conditions of dust explosion:
A. combustible dust suspended in the air and reached a certain concentration, the formation of dust cloud;
B. has plenty of oxidant;
C. a source of fire or a strong vibration and friction heat;
E. dust combustion heat release, heat conduction and flame radiation in the vicinity of the suspension or blowing dust, the dust is heated gasification cycle. The reaction speed is gradually accelerated, and the reaction rate is increased, and the explosive is formed by violent combustion;
4, dust explosion hazard:
Dust explosion has strong destructive, easy to produce the two explosion, can produce toxic gas, once it happens, the damage area is large, it is difficult to control;
5, how to prevent dust explosion:
A. to reduce dust concentration in the air and use of equipment can collect the powder dust processing, reduce the amount of dust in the air, as it is now many enterprises use industrial dust remover treatment, effective control of dust content;
B. control temperature;
C. control of the fire, dust explosion danger, to use explosion-proof motor, explosion-proof and explosion-proof lighting industrial vacuum cleaner;
D. control humidity and oxygen content; |
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