Gas generators have incomparable advantages compared with traditional heat supply processes. However, gas generators will also experience some failures during operation. If insufficient attention is paid to the causes and elimination of these failures, it will cause small and immeasurable losses to enterprises in chemical industry, light industry, metallurgy, machinery, building materials, refractory materials, etc.
gas generatorA hot operating condition occurs
Thermal operation is a common primary failure of gas generators. The specific manifestations are that the temperature in the furnace is too high, gas will naturally occur, the steel brazing will be burned, etc., the carbon monoxide content of the produced gas will decrease, and the carbon dioxide content will increase.
Hot runs can occur for two reasons:
First, the coal seam in the furnace is low, the ash layer is relatively high, the oxide layer is forced to move upward, and other layers basically disappear, causing the sunrise temperature to surge. In response to this situation, it is necessary to increase the intensity of ash removal, increase coal feeding, maintain the height of the coal seam in the furnace, and reduce the oxide layer to a safe position, thereby reducing the furnace temperature.
The second is the thermal operation situation where the gasification layer temperature is too high due to small steam content. Excessive slagging in the oxide layer is the main reason for thermal operation. In this case, it is very likely to cause partial burning of the coal seam. In some places, the coal seam has too much slag and is burned through, causing a large amount of coal to enter the slag, which not only wastes coal resources, but also affects the operation of the gas generator.
Walking brings danger. When this happens, effective measures must be taken to break the slag and rotate the ash pan to squeeze the slag out of the gas generator. If the slag cannot be broken during the operation of the gas generator, the slag must be stopped and disposed of.
Cold operation of gas generator
Cold operation is the second common fault of gas generators. Compared with hot operation, cold operation of gas generators may also occur during operation. The specific manifestations are that the temperature in the furnace is too low, the steel drill detects small oxide layers, and the moisture content in the gas is high and the carbon monoxide content is low. There are two reasons for cold operation: first, the coal seam has a high water content, which causes a large amount of heat to be lost in order to dry the coal seam. To solve this problem, before the coal is transferred to the gas generator, the moisture content must be detected to determine the scientific moisture content and ensure that coal with excessive moisture content does not enter the gas generator. The second is the thermal operation situation where the high steam content causes the temperature of the gasification layer to be too high. The high steam content directly reduces the temperature of the oxide layer. The coal entering the gasifier is unlikely to be fully gasified, but it is a serious waste of coal resources and creates obstacles to the operation of the gasifier. The main way to solve this fault is to reduce the steam content in the furnace and take measures to raise the oxide layer.
In addition, common faults of the gas generator include partial operation, stoker failure, pressurizer shutdown, blower shutdown, water shortage in the steam drum, gas reverse flow, etc., which need to be addressed during the operation of the gas generator. In short, gasifiers, as an important part of coal clean technology, are receiving more and more attention from all walks of life. They have broad application scope and application prospects in chemical industry, light industry, metallurgy, machinery, building materials, refractory materials and other industries. Compared with the traditional heat supply technology in these industries, gasifiers are generally welcomed for their advantages of automated heating, environmental protection and cleanliness, reliable operation, and reduced energy consumption. However, some malfunctions may occur during the operation of the gas generator. If they are eliminated in a timely manner, they will cause small and necessary economic losses to the companies using the gas generator, and may even cause major losses to people's lives and property. Therefore, we must attach great importance to the types of gas generator failures and their causes, and formulate effective measures to solve them carefully based on the causes of gas generator failures. Only in this way can the huge role of gas generators in economic construction be maximized and the overall progress of enterprises be promoted.
