Compare CO2 fire extinguishers and powder fire extinguishers

19/09/2022

For the features and Usage between powder and CO2 fire extinguishers are basically the same, used to fight fires in necessary areas, but in terms of physical structure they are different.

What is the comparison between CO2 fire extinguishers and powder fire extinguishers? This is a question that many people are interested in, so please join me in reviewing the following article.

1. Different ingredients

Carbon dioxide (CO2) fire extinguishing agent is a type of fire extinguishing agent with a history of more than one hundred years. Cheap price, easy to find and use. It relies primarily on air deflection to help dampen the fire and partial cooling to extinguish the fire. Carbon dioxide has a higher density, about 1.5 times that of air.

Dry powder fire extinguisher is a type of fire extinguishing agent, according to the type of dry powder fire extinguisher, it can be divided into:

① ordinary dry powder fire extinguisher;

② Ultra-fine dry powder fire extinguisher.

2. Differences in working principles

- Under normal pressure, liquid carbon dioxide will vaporize immediately. In general, 1kg of liquid carbon dioxide can produce about 0.5 cubic meters of gas. Therefore, when extinguishing a fire, carbon dioxide gas can exclude air and surround the surface of the burning object or distribute it in a relatively closed space, reducing the oxygen concentration around the burning substance or in the air. protective space, and creates a suffocating effect to extinguish the fire.

- Dry powder fire extinguishers are equipped with dry powder fire extinguishing agents such as ammonium phosphate salt. This dry powder extinguishing agent is very flowable and dry. It is composed of crushed and dried inorganic salts and additives, which can effectively extinguish initial fires.

So sánh bình chữa cháy CO2 và bình chữa cháy bột

So sánh bình chữa cháy CO2 và bình chữa cháy bột

>>> 3 cách sử dụng bình chữa cháy an toàn nhất hiện nay >>>>

3. Different characteristics

When carbon dioxide is sprayed out of the container, it quickly vaporizes from a liquid into a gas and absorbs some of the heat from the surrounding environment, creating a cooling role.

Ordinary dry powder fire extinguishers are mainly composed of active extinguishing ingredients, hydrophobic ingredients and inert fillers. The hydrophobic ingredients mainly include silicone oil and hydrophobic carbon black and white. There are many types of inert fillers. They mainly prevent vibration and agglomeration, improve dry powder movement performance, and catalyze dry powder. Case of silicone oil and improved compatibility with foam extinguishing agents.

4. Different range of uses

Carbon dioxide fire extinguishing agent is mainly used in storage facilities and instrument laboratories. Because this type of fire extinguisher leaves nothing behind after spraying, leaving no waste in the environment

Dry powder fire extinguishers are suitable for extinguishing ABC three types of fires, which are solid, gas and liquid fires.

5. Use the same basic method

- The method of use is the same, it is a four-step process: lift up and shake, pull out the safety plug, hold the nozzle and discharge to the base of the flame.

- The above content is a comparison of CO2 fire extinguishers and powder fire extinguishers. They have many differences in structure, production method, fire fighting effectiveness, and the fire they can extinguish...but the factors are the same. The aim is to extinguish fires as quickly as possible.

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