Improve the casting quality of refractory castables. Refractory castable is the last layer of insulation material of the vault wall. Before casting, it is required to carefully match different castables to achieve the required proportioning level, strictly match the water ratio, and require the water to be clean and evenly mixed. Vibrating rods are used for ramming in the pouring process, and local artificial tamping is used. Each time the prepared castable is used up in time, the storage time should not exceed half an hour. The stirrer and other tools used should be cleaned after re-preparation. . Strictly masonry bricks shall be checked block by block before the inlet and outlet briquettes are removed. The dimensions shall meet the requirements of the drawings and shall not be defective.
Each layer of refractory bricks must be pre-built so that the mortar joints are evenly distributed. Strictly control the mortar joints between 1mm and 2mm, and the local mortar joints shall not exceed 3mm at maximum. The two-layer firebricks must be staggered and masonry, strictly control the ratio of refractory mud and water, and fill the refractory mud in the mortar joints. full. Improving the quality of firebricks The original gasifier vault bricks are firebricks imported from a foreign company. The bricks were not designed with mortar joints and formed large errors in the cutting process, resulting in different size of the mortar joints and difficult to achieve. The required mortar seam quality.
To this end, we have jointly developed a new type of refractory brick that matches the gasification furnace with a domestic scientific research institute to achieve the required requirements for the ash seam, and at the same time optimize the ratio of raw materials and enhance the resistance to gas erosion and thermal shock resistance. To prevent the occurrence of cracks. The effect of the inspection of the dome of the B furnace during the upgrading of the refractory bricks was strictly implemented, and we achieved good results. No helium phenomenon occurred, and the temperature at each temperature measurement point was within the allowable range.
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