Vacuum packaging machine for packaging of powder explosive

As the product, in the food industry and other industry products, in the shape of performance are varied, powder material is also very common. This makes the application in packaging, it will inevitably be packed powder kind of goods, so, what is the cause of the equipment packing powder explosive?

powder explosion principle: first to look at the classification of the explosive dust and grouping. Is generally easy to dust explosion accident of roughly aluminium powder, zinc powder, ferrosilicon powder, magnesium powder, iron powder, aluminum processing grinding powder, all kinds of plastic powder, organic synthesis of pharmaceutical intermediates, wheat flour, sugar, wood chips, dye, bakelite ash powder, milk powder, tea, tobacco powder dust, coal dust, and plant fiber etc. These materials is the cause of dust explosion easily burning has a strong reductant H, C, N and S elements such as existence, when they coexist with peroxide and explosive dust, then decompose, by oxidation reaction to produce large amounts of gas, or gas quantity is small, but release a large amount of heat of combustion. Aluminium powder, for example, as long as in carbon dioxide atmosphere is in danger of explosion.

dust explosion easily to the physical, chemical properties of dust and environmental conditions. Generally think that the material the more likely it is to the explosion heat of combustion, such as coal dust, carbon, sulfur, etc. Oxidation speed of material easy to explode, such as magnesium powder, aluminum powder, ferrous oxide, dye, etc. Charged dust is also easy to cause explosion, such as synthetic resin powder, fiber dust, starch, etc. These poor conductive material with machine or air friction electrostatic accumulated, when reaching a certain amount, can produce electric spark discharge, a blast of fire.

are usually not easy to cause the dust explosion are soil, sand, iron oxide, grinding materials, cement, quartz dust and dust after similar to burning. Such physical chemical properties of dust is stable, so is not easy to burn. But if this kind of dust produced in the oil mist and CO, CH4 and gas and combustible gas, also easy to explode.

dust explosion visual formed by the following three development: one is the floating dust under the action of heat quickly dry distillation or gasification to produce flammable gas; Second, combustible gas and air mixture and combustion; Three is to dust emitted by burning heat, heat transfer and flame radiation way to suspension or near the dust was blown up, after the dust heated vaporization combustion cycle to proceed. With successive of each loop, the reaction rate was accelerated, by severe burning, end formation explosion. This explosion reaction flame and explosion speed, explosion wave velocity, the pressure will continue to accelerate and increase, and the development by leaps and bounds.

the above analysis of the causes of vacuum packaging machine for packaging powder explosive, also this paper introduces the principle of dust explosion and easy for us to produce the powder explosive substance, believe that can help us better to avoid such accidents. Therefore, when we in the choice of packing machine, will pay attention to must choose explosion-proof products, this is very important.

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