Problems with the refractory bricks in the gasifier?
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To what extent can modern refractory bricks withstand high temperatures? What is the limit for refractory bricks produced by domestic manufacturers? What is the service life of a gasification furnace? How can the service life of refractory bricks be extended? Isn’t it very troublesome to replace the refractory bricks in a gasifier as a whole?
Generally, it reaches up to 1800 degrees; the lower the furnace temperature, the longer its lifespan, usually lasting one to two years.
Operate properly to prevent the furnace condition from deteriorating and extend the service life of the refractory bricks
Operating time for dome bricks: 16,000 hours; operating time for cylinder bricks: 8,000 hours; operating time for cone base bricks: 4,000 hours. However, the actual operating time is much longer than this.
First, reduce the operating temperature of the gasifier as much as possible; second, pay attention to the condition of the burners, and replace them if they are in poor condition
Generally speaking, refractory bricks can withstand high temperatures of up to 1800 degrees! Different materials result in different high-temperature resistance! It is not recommended to operate at the critical temperature, as it is not economical! At present, different furnace types result in varying service lives for refractory bricks! For Texaco’s furnaces, the arch bricks can last 16,000 hours, the cylinder bricks 12,000 hours, and the cone-bottom bricks 5,000 hours. For a furnace with four nozzles, the service life of the arch bricks is 6000 hours, that of the cylinder bricks is 14000 hours, and that of the cone bottom bricks is 4000 hours. The service life is highly dependent on factors such as furnace construction and operational procedures, as well as the type of coal used. Select an appropriate coal type, reduce the number of shutdowns, keep the operating temperature from being too high, and maintain a stable operating process! Fire-resistant material manufacturers are also constantly working to further extend their service life!
Discussing limits has no practical meaning; refractory bricks are damaged not at the limit temperature, but rather below it.
We should discuss how to avoid overheating in normal operations, how to detect overheating, and how to deal with it; in the design phase, we ensure that the refractory bricks do not reach their limit temperatures