In the face of a fire emergency, choosing the right fire extinguisher is essential to control the fire. There are many types of fire extinguishers on the market, the most common of which are dry chemical fire extinguishers and carbon dioxide fire extinguishers. There are significant differences between these two types of fire extinguishers in terms of function and usage scenarios. This article will break down the differences between the two in detail to help you make the right choice in an emergency.
How it works
Dry chemical fire extinguisher: Dry chemical fire extinguisher mainly inhibits flame combustion by instantaneously releasing a large amount of non-reactive gas from dry chemical fire extinguishing agent. This fire extinguisher is suitable for extinguishing solid, liquid and gas fires, as well as fires on electrical equipment.
Carbon dioxide fire extinguishers: Carbon dioxide fire extinguishers use carbon dioxide stored under pressure as the main fire extinguishing medium. When carbon dioxide is released, it forms a layer of non-combustible gas around the air, thus cutting off the contact between oxygen and the flame, achieving the effect of extinguishing the fire. This fire extinguisher is mainly used for extinguishing fires of valuables such as electrical appliances, precision instruments and documents.
Applicable scenarios
Dry chemical fire extinguishers: Due to their wide applicability, dry chemical fire extinguishers are suitable for various scenarios, such as homes, offices, factories, and garages, etc.
Carbon dioxide fire extinguisher: Since carbon dioxide is an inert gas, it will not cause harm to people and the environment, so it is especially suitable for extinguishing fires in electrical appliances and precision instruments.
Precautions for use
Dry powder fire extinguisher: When using a dry powder fire extinguisher, attention should be paid to prevent dry powder from scattering, and avoid inhalation or contact with eyes and **. After use, immediately leave the disaster site and ensure that you breathe fresh air.
CO2 fire extinguishers: As CO2 is a suffocating gas, special care is required when using it. Use in open spaces should be ensured and avoid use in enclosed or crowded environments to avoid a choking hazard. After use, leave the site as soon as possible and ensure good ventilation.
Maintenance & Storage
Dry chemical fire extinguishers: Dry chemical fire extinguishers should be stored in a dry, cool, well-ventilated place that is not easily exposed to direct sunlight. The pressure gauge should be checked regularly to see if it is normal and to ensure that the dry powder is not lumping.
CO2 fire extinguishers: CO2 fire extinguishers should be stored at a suitable temperature and away from heat sources. Before use, check whether the pressure of the cylinder is normal to ensure that the valve is not damaged.
Environmental protection and safety
Dry powder fire extinguisher: Dry powder fire extinguisher will produce a certain residue after use, which needs to be handled by professionals to avoid harm to the environment and human body.
CO2 fire extinguishers: Since CO2 is a naturally occurring gas, it does not have long-term effects on the environment and the human body after use. However, care should be taken to correct use to avoid a choking hazard.
Summary: Dry chemical fire extinguishers and carbon dioxide fire extinguishers have their own characteristics and application scenarios. When choosing and using, it should be judged on a case-by-case basis. Understanding the difference between these two types of fire extinguishers helps us make the right decisions in an emergency, effectively control the fire, and protect life and property.