Boiler Explosion Danger and Preventive Measures

Xiao Bian analyzes the boiler's explosion risk and defense measures for everyone. Due to various reasons, gas boiler explosions frequently occur. It not only causes a lot of economic losses, but also causes people to suffer physical and mental damages and even lives. Therefore, it is very necessary to study the explosion hazard of gas boilers and their preventive measures.

I. Gas boiler and its application

1.1 Introduction to Gas Boiler Structure

Gas-fired boilers include two systems of gas-fired combustion equipment and boilers. Gas combustion equipment mainly refers to furnaces and burners. It also includes other equipment related to the combustion process. Its main role is to pass a certain amount of combustible gas and air into the combustion equipment, and convert chemical energy into thermal energy through the combustion of combustible gas. To provide continuous thermal energy to the boiler body. Boiler book

The body converts water into steam by the heat energy provided by the combustion equipment, making it a certain quantity and quality (pressure and humidity) steam. The entire boiler production process is to send a certain amount of combustible gas and the corresponding amount of air into the furnace for combustion, and the heat emitted by the combustion is transmitted to the water, so that the water vaporizes at a constant pressure to form water vapor with a certain pressure and temperature.

1.2 Application of Gas Fired Boiler

As a kind of process equipment for generating heat energy and power, gas-fired boilers are widely used in electricity, machinery, chemical industry, textile and papermaking and other industrial sectors, hotels, and residential areas for heating and heating. Due to the need for heating and heating in northern cities in China, the number of boilers in use is even greater. Gas-fired boilers have gradually entered the lives of people around them.

2. Gas boiler explosion accident types and hazards

The accidents that occur in the operation of gas boilers can be roughly divided into three categories:

(1) Extraordinary accidents: The explosion of the main pressure-receiving components in boilers, such as drums and tube plates, often leads to equipment and plant damage and personal injury, resulting in major losses.

(2) Major accidents: accidents in which the gas boiler cannot be maintained in normal operation and are forced to stop the furnace, such as water shortage accidents and furnace explosions. Although this type of accident is not as serious as a serious accident, it often causes damage to equipment and buildings, as well as personal injury and death. The gas boilers are forced to stop operating, causing the partial or complete shutdown of the gas sector to stop production, causing serious economic losses.

(3) General accidents: The accidents that can be eliminated during the operation or the accidents that can be eliminated after a short pause can have minor impacts and losses. Gas-fired boiler accidents are among the three major types of industrial thermal disasters that cause the greatest loss. It can be divided into two types of explosions. One is a furnace explosion and the other is a furnace explosion. Gas boilers have a high frequency of explosions.

3. Analysis of Fire Hazard of Gas Fired Boiler

3.1 Hazardous characteristics of gas

Gas-fired boilers are combustible gases, mainly natural gas or gas. The main components of natural gas and gas are methane, which is also a mixture of simple alkanes. These components are highly flammable and explosive gases. The explosion limit of natural gas is 4%, and the explosion limit of gas is 6.2%. It is prone to explosion. ACCIDENT.

3.2 Furnace explosion fire risk

Furnace explosions are caused by the leakage of combustible gas and mixing with air to form an explosive mixture. An explosive accident occurs when this mixture is exposed to the appropriate ignition source when it is within the explosion limit.