The combustion reaction belongs to the chain reaction, and each activation of the intermediate active product or activation center involved in the reaction can cause the basic reaction to produce more chain carriers, so that the reaction selectivity increases rapidly and continues until the reactants are exhausted, which is the ignition and combustion of fuel.
In combustion equipment, the ignition of combustible gas must rely on forced ignition. The ignition conditions are related to the temperature and concentration of the gas, and the concentration is determined by the pressure of the combustion system and the composition of the gas.
At a certain pressure or temperature, not any concentration of gas can ignite, but there is a certain concentration range, known as the "ignition concentration limit". When the pressure or temperature drops beyond a certain point, the mixture of any concentration cannot ignite. The local atmospheric pressure in Xining is only 76.3% of the standard atmospheric pressure, and the ignition range of gas is greatly reduced accordingly. Improper control of the proportion of gas and air may cause the ignition difficulty of the burner, thus directly affecting the ignition and normal combustion operation.
Electric spark ignition is commonly used in engineering. When the two electrodes placed in the combustible mixture are energized to generate a spark, the local combustible molecules ionize, causing a rapid chain reaction and raising the local temperature of the spark zone. The spark zone becomes the ignition source, forming the center of the initial flame, and propagating steadily toward the unignited mixture for combustion.
Therefore, according to the principle of spark ignition, the problem of gas ignition under the condition of low pressure on the plateau is solved. High energy ignition devices must be used; Expand the spark zone, form a thicker ignition flame, improve the local ignition temperature, to ensure the normal ignition operation of the burner.
EBICO will attend Thailand's Premier Power Generation & Electric Exhibition...
How a bowl of Baixiang good noodles is born? About 1.8 million years ago, humans learned to cook food with purposeful control of fire. The use of fire has made unprecedented progress in human health and life, and Darwin also called cooking the most important invention of mankind after language....
