Compared with ordinary bricks, some advantages of refractory bricks are its strong refractoriness. It is a shaped refractory material. It is widely used in some kilns, blast furnaces and other industrial industries. If the oxygen load fluctuates during use of the brick, it should be How to do?
1. Refractory bricks will fluctuate in the oxygen load during the operation of the gasifier. Sometimes the oxygen regulating valve will cause the oxygen load to fluctuate, and sometimes large particles will suddenly jam the valve of the high-pressure coal slurry pump, and the coal slurry flow will suddenly drop causing oxygen. The amount is relatively excessive. The fluctuation of oxygen directly causes the fluctuation of furnace temperature. The fluctuation range of oxygen is sometimes 500m3～600m3, and in large cases it reaches about 1000m3.
2. After the oxygen suddenly rises, the furnace temperature will rise suddenly, and the high temperature thermocouple will be burnt out suddenly. This situation has a great impact on the refractory bricks and should be avoided as much as possible. We all know that the temperature in the furnace is very important to the life of the refractory lining, so it is necessary to strictly control not to over-temperature. Under normal production conditions, there is a slag layer on the surface of the refractory brick. In fact, the slag layer is dynamic. The low temperature slag layer is thicker, and the high temperature slag layer is thinner. A properly thick slag layer can slow down the erosion of high temperature gas and molten slag. .
Therefore, care should be taken to control the oxygen load of the refractory bricks, not to allow them to fluctuate greatly, and the oxygen content should be controlled as not as high as possible. In addition, proper production technology can also reduce the fluctuation of oxygen load.
