1, accidentally knocked over the alcohol lamp during the experiment, and the alcohol burned on the table. Covering the burning alcohol with a wet rag can isolate alcohol from oxygen and play a role in cooling down; No other substances will remain on the experimental platform after extinguishing, and the fire extinguishing method is relatively simple. Alcohol is less dense than water and cannot be washed with water.
2. The neighbor accidentally ignited the quilt due to smoking and caused a fire. Can be put out with water, using the principle of reducing the temperature below the ignition point of combustible materials.
Alcohol lamp is a kind of heating tool with alcohol as fuel, which is used to heat objects. Alcohol lamp consists of lamp body, wick tube and lamp holder. The heating temperature of alcohol lamp is 400-500℃, which is suitable for experiments with low temperature, especially without gas equipment. Immediately cover with a wet towel or fine sand. Alcohol is a polar liquid. The principle of extinguishing fire with wet cloth or sand cover is suffocation, that is, reducing the supply of oxygen.
Measures taken in the case of a small amount of leakage, when covering, cover all at once and cover all as far as possible, which will suffocate; If there is a large amount of alcohol leakage, it is necessary to use a fire extinguisher, usually a dry powder fire extinguisher, because the area is large, there is not enough cloth to cover it or there is not enough sand (sand is not easy to cover evenly, so this measure is generally not taken now). ?
Matters needing attention
1, the wick of alcohol lamp should be flat. If it is burnt or uneven, it should be corrected with scissors.
2. When adding alcohol, it shall not exceed 2/3 of the volume of alcohol lamp; Alcohol is not less than l/4.
It is absolutely forbidden to add alcohol to the burning alcohol lamp to avoid fire.
It is absolutely forbidden to light another alcohol lamp with an alcohol lamp, but it should be lit with a match.
5. After using the alcohol lamp, be sure to cover it with the lamp cap, and don't blow it with your mouth.