You can use water fire extinguishers, carbon dioxide fire extinguishers, dry powder fire extinguishers, foam fire extinguishers.
1, water fire extinguishers
Water fire extinguishers in the fire extinguishing agent is water. Water at room temperature has a lower viscosity, higher thermal stability, greater density and higher surface tension, is an ancient and widely used natural fire extinguishing agent, easy to obtain and storage. For some easily soluble in water flammable, flammable liquids can also play a dilution role; the use of strong jets produced by the water mist can make the flammable, flammable liquids emulsification, so that the surface of the liquid quickly cooled, combustible vapors generated by the rate of decline to achieve the purpose of extinguishing the fire.
2, carbon dioxide fire extinguishers
Suitable for combating flammable liquids and gases of the initial fire, but also for fighting fires in electrically powered equipment. Often used in laboratories, computer rooms, power distribution, as well as precision electronic instruments, valuable equipment or goods maintenance requirements of high places.
3, dry powder fire extinguishers
Sodium bicarbonate dry powder fire extinguishers for flammable, combustible liquids, gases and electrically powered equipment for the initial fire; ammonium phosphate dry powder fire extinguishers in addition to the above categories of fires, but also to fight the initial fire of the solid material. But can not put out the metal burning fire.
4, foam fire extinguishers
Applicable to fight general class B fires, such as oil products, grease and other fires, can also be applied to class A fires, but can not fight class B fires in the water-soluble flammable, flammable liquids such as alcohols, esters, ethers, ketones and other substances fires; also can not fight charged equipment and class C and class D fires.
Expanded Information:
. p>Fire extinguishing methods:
Cooling method
This fire extinguishing method is based on the principle that the extinguishing agent is sprayed directly onto the burning object to reduce the temperature of the burning below the ignition point, so that the burning stops. Or the extinguishing agent sprayed on the material near the source of the fire, so that it is not due to the role of flame heat radiation and the formation of a new fire point. Cooling fire extinguishing method is a major method of fire extinguishing, commonly used water and carbon dioxide as a fire extinguishing agent to cool down the fire. Extinguishing agent in the fire extinguishing process does not participate in the chemical reaction in the combustion process. This method belongs to the physical fire extinguishing methods.
Segregation method
Segregation of fire extinguishing method is the burning material and the surrounding non-combustible combustible material isolation or move away, interrupt the supply of combustible material, so that the combustion due to the lack of combustible material and stop. Specific methods are:
1, the fire source near the combustible, flammable, explosive and combustion-assisted items removed.
2, close the valves of combustible gas and liquid pipelines to reduce and prevent combustible substances from entering the combustion zone.
3, try to block the stray flammable and combustible liquids.
4, the removal of combustible buildings adjacent to the source of fire, the formation of a space zone to prevent the spread of fire.
Asphyxiation method
Asphyxiation method is to prevent the flow of air into the combustion zone or non-combustible area or with non-combustible substances to dilute the air, so that combustion does not get enough oxygen and extinguish the fire extinguishing methods. Specific methods are:
1, with sand, cement, wet sacks, wet quilts and other non-combustible or incombustible materials to cover the burning material.
2, spray mist water, dry powder, foam and other extinguishing agents to cover the burning material.
3, with water vapor or nitrogen, carbon dioxide and other inert gases to fill the fire container, equipment.
4, sealing the fire building, equipment and holes.
5, non-flammable gases or non-flammable liquids (such as carbon dioxide, nitrogen, carbon tetrachloride, etc.) sprayed into the area of the burning material or on the burning material.?
Baidu Encyclopedia - Fire Extinguishers