Refractory brick in the running process of the gasifier has also occurred in oxygen load
fluctuation and sometimes oxygen control valves will be caused by the variation in oxygen load, sometimes large particles will suddenly stuck valve of high-pressure coal slurry pump, slurry
flow suddenly dropped caused by the amount of oxygen relative excess. Oxygen fluctuations directly after temperature fluctuations caused by oxygen, the fluctuation range is 500m3 ~ 600m3 sometimes, reaches a maximum of 1000m3. After the sudden rise in oxygen, resulting in a sudden rise in temperature suddenly burnt under high temperature thermocouple. This situation of refractory brick influence is big, should be avoided as much as possible. First of all, we all know that the furnace temperature is very important to the life of the refractory lining, so it should be strictly controlled not over temperature. Under normal production conditions, the surface of refractory bricks have a layer of coal layer, in fact, slag layer is dynamic, low temperature slag layer is thick, the high temperature slag layer is thin, the appropriate thickness of slag layer can slow erosion
of high temperature gas and slag.
fluctuation and sometimes oxygen control valves will be caused by the variation in oxygen load, sometimes large particles will suddenly stuck valve of high-pressure coal slurry pump, slurryflow suddenly dropped caused by the amount of oxygen relative excess. Oxygen fluctuations directly after temperature fluctuations caused by oxygen, the fluctuation range is 500m3 ~ 600m3 sometimes, reaches a maximum of 1000m3. After the sudden rise in oxygen, resulting in a sudden rise in temperature suddenly burnt under high temperature thermocouple. This situation of refractory brick influence is big, should be avoided as much as possible. First of all, we all know that the furnace temperature is very important to the life of the refractory lining, so it should be strictly controlled not over temperature. Under normal production conditions, the surface of refractory bricks have a layer of coal layer, in fact, slag layer is dynamic, low temperature slag layer is thick, the high temperature slag layer is thin, the appropriate thickness of slag layer can slow erosion
of high temperature gas and slag.
Coal water slurry gasifier of refractory brick requirements than to heavy oil stove of raw materials requirements of refractory brick is much higher; the main reason is the slag on the refractory penetration and corrosion. The replacement of the firebricks that penetrate the thickness of 10mm ~ 20mm, penetration, and its strength decreased obviously. High temperature erosion intensified. According to introduce the relevant information, especially the operating temperature more than 1400 DEG C when etching effect is increased exponentially, so in daily operation, often pay attention to the temperature changes, timely discovery and deal with the problem, security of refractory bricks use period and number of times, is very effective to reduce the cost.
