【 Weak current College 】 why ordinary foam extinguishing agent cannot fight alcohol ignition---Power By 【 China power house network 】

This ' a scenario: the lab, staff do experiment with alcohol heating, a drop of alcohol lamp upset, caught fire, it was quickly take down the wall of the foam fire extinguishers, shoots to the flames, but strangely, bubble jet a, name has not been extinguished. But at this point, some people end up a box of fine sand cast away, the fire immediately. Look at the immediate situation, perhaps someone confused, why ordinary foam extinguishing the fire is not quenched the alcohol?

To answer this, you should first know how fire extinguishing foam extinguishing agent. Originally, the foam Jet out, like flock, floating in the combustible or flammable surface, forming a stable foam layer, preventing oxygen enters, fire was put out. But the alcohol itself is an emulsion, as long as the foam and alcohol a contact, you will destroy the spray out of the foam. As a result, in alcohol surface will not be able to form the foam layer isolates the oxygen, also will not be able to fire-fighting purposes. Therefore, the only alcohol ignition-resistant foam or sand to fire. In addition, you can use the wet burlap sacks, wet blanket etc. to fight.

To prevent alcoholic's fire, should pay special attention not to bring them closer to the source of fire, heat and power, if the stock a lot, you should use the non-material to cover, and leave the appropriate distance, but also the strict custody, is strictly prohibited. The family of alcohol nor near the stove, heating, strictly speaking, wine cooler on the TV set is not appropriate.