Those things can be used to extinguish fires 10

1. Water is the most practical and simple fire extinguishing agent in the home. If it's paper, wood or cloth**, you can use it to extinguish it. However, if an electrical appliance, gasoline, alcohol, cooking oil, etc. catches fire, do not use water to extinguish it.

2. Sand, wet quilts, and sacks can extinguish fires, and brooms, mops, clothes, shovels, pickaxes, etc. can also be used as fire extinguishing tools. The key is to be fast and not to give the fire a chance to spread.

3. Dry powder fire extinguisher: suitable for extinguishing oil, combustible gas and electrical equipment fires.

4. Foam fire extinguisher: suitable for extinguishing all kinds of flammable liquid and solid material fires.

5. "Carbon dioxide" fire extinguisher: suitable for extinguishing fires of oil, live equipment, precision instruments, meters, cultural relics, archives and other valuables.

It also depends on the source of the fire, and the water used for the general fire can also extinguish the fire. When the pot is on fire when cooking, just cover it with a lid to isolate the air. I remember that in chemistry class, it was said that a person who was on fire seemed to be unable to use water or fire extinguishing agent, and that substance could react with them, but I don't remember what it was, sweat.

Earth, water, sand. The most general, and foam or something.

Generally, you can use water, but you can't use water in an electric fire. That will only accelerate or spread, and chemical fires usually have to be extinguished with sand.

If you are at home, use a wet towel. The sand is not bad either.

Sand, after being isolated from the air, cannot be burned without oxygen.

As long as it is not a combustible object, it can be used to extinguish the fire, this question is a bit too big to ask.

Be careful not to extinguish an electrical fire with water.

Do not use water for liquid fires such as oil, otherwise it will exacerbate the spread of the fire.

5. When storing potassium, sodium, magnesium, aluminum powder, calcium carbide, quicklime, sodium peroxide and other chemicals, as well as strong acids such as sulfuric acid and hydrochloric acid, once a fire occurs, it cannot be extinguished with water. The reason for this is that the chemical reaction between these stoves and water may produce a large amount of heat energy on the one hand, which will make the fire burn bigger.

On the other hand, flammable gas may be generated, increasing the risk. Strong acids do not burn on their own, but when exposed to water, the vibrator will quickly splash outwards in all directions, corroding the surrounding environment and rescue personnel. Therefore, in this case, it is best to carefully choose fire extinguishing materials, first extinguish the fire outside, and then enter to check the internal situation, and transport these dangerous substances away at low temperatures.

Asbestos cloth: suitable for small fires. Cover it with an asbestos cloth to keep out the air and extinguish the fire.

If the fire is small, cover it with a damp rag or asbestos board.

Dry sand: Generally packed in a sand box or sand bag, as long as it is thrown on the burning object to extinguish the fire. It is suitable for burns that cannot be extinguished with water, but is not suitable for flames with a large area and a large area. Sand should be used dry.

Water: It is a commonly used firefighting substance. It can reduce the temperature of the combustible matter, but it is not suitable for the general organic matter to ignite, because the solvent is not miscible with water, and it is lighter than water, after the water is poured up, the solvent is still floating on the water surface, spreading out and continuing to burn.

However, water can be used to extinguish the fire if the combustible material is miscible with water, or if there is no other danger with the water. When the solvent catches fire, it is an effective way to extinguish the fire with a foam fire extinguisher and then cool it down with water.

Foam fire extinguisher: is a commonly used fire extinguishing equipment in the laboratory, when used, the fire extinguisher is turned upside down and sprayed to the fire, because it generates carbon dioxide and foam, so that the combustion is isolated from the air and extinguishes the fire, the effect is better, and it is suitable for fire extinguishing in addition to the current.

Carbon dioxide fire extinguisher: Fill the liquid carbon dioxide in a small cylinder, open the valve when fighting the fire, and aim the bell mouth at the fire to spray carbon dioxide to extinguish the fire, which is very suitable in the factory laboratory, it does not damage the instrument, does not leave residue, and can also be used for the instrument with electricity, but it cannot be used to extinguish the fire when the metal magnesium is burned.

Carbon Tetrachloride Fire Extinguisher: Carbon Tetrachloride has a low boiling point, and when it is sprayed, it forms a heavy and inert vapor that covers the burning object, isolating it from the air and extinguishing the fire. It does not conduct electricity and is suitable for extinguishing fires from live objects.

However, it decomposes toxic gases at high temperatures, so it is best not to use them in unventilated places. In addition, it should not be used in the presence of metals such as sodium and potassium because there is a risk of causing **.

In addition to the above commonly used fire extinguishers, a variety of new high-performance fire extinguishers have been produced in recent years. For example, the 1211 fire extinguisher, which is equipped with a chemical difluorochloro-bromomethyl in the cylinder, has high fire extinguishing efficiency. Another example is that the dry powder fire extinguisher is used in combination with carbon dioxide and a dry powder, and the fire extinguishing speed is very fast.

Water vapor: Spraying water vapor on the fire in a place where there is water vapor can also isolate the air and extinguish the fire.

Graphite powder: When potassium, sodium or lithium ignites a fire, it cannot be extinguished with water, foam fire extinguisher, carbon dioxide, carbon tetrachloride, etc., and can be extinguished with graphite powder.

The key to extinguishing an electrical circuit or electrical appliance fire is to cut off the power supply in the first place to prevent the situation from expanding. The best fire extinguishers for electrical appliances to catch fire are carbon tetrachloride and carbon dioxide fire extinguishers.

When your clothes are on fire and in the midst of firefighting, do not run around, as this will intensify the burning due to the rapid movement of the air, and you should lie on the ground and roll on the ground, so that on the one hand you can extinguish the flames and on the other hand avoid the fire from reaching your head.

Generally, the fire is extinguished with water, alcohol and gasoline are extinguished with sand, and carbon dioxide is extinguished.

The specific situation is treated on a case-by-case basis, books, electrical appliances, etc. with dry ice, oil, flammable liquids, etc., with foam, dry powder, etc., and ordinary fires are directly watered.

Of course, it is a fire extinguishing agent, for different fire extinguishers, the fire extinguishing agent is different, for example: carbon dioxide fire extinguisher is equipped with carbon dioxide, BC dry powder fire extinguisher is generally equipped with sodium bicarbonate, ABCBC dry powder fire extinguisher is generally equipped with phosphate as the base material of dry powder fire extinguishing agent. If you don't understand, you can add it.

The chemicals contained in it, the dry chemical fire extinguisher, are ammonium sulfate and ammonium dihydrogen phosphate.

Today, our school uses dry chemical fire extinguishers.