Analysis of the reasons why the pins on the diaphragm water-cooled wall of Shell pulverized coal gasifier became shorter and the refractory material fell off in large quantities
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Dear friends, please use your ingenuity and analyze the specific reasons why the pins on the membrane water-cooling wall of the Shell pulverized coal gasifier have become shorter and the refractory materials have fallen off in large quantities?
1. The shortening of the pin may be due to excessive oxygen and overtemperature during operation. If the pin is at least 7mm short, it should be repaired and re-cut. 2. If the refractory material falls off in large quantities, if it is SIC75 material, it may be caused by improper quality control of the furnace or oven or a sharp temperature change. The refractory material falling off the shell may also be caused by being immersed in water. It's just nonsense, don't take it seriously
Our unit has replaced the pins, the reason is: peroxide
Not only is it overoxygenated, but the casting material may also be substandard. .