What Kind of Refractory Material is Used for the Lining of the Hydrogen Sulfide Incinerator?
The working temperature in the furnace of the incinerator burning hydrogen sulfide is about 1150 ℃, and the working conditions are harsh. It belongs to an acidic combustion atmosphere, but the temperature of the furnace will reach 1400 ℃ due to the fluctuation of materials and air volume in actual production. The amount of hydrogen sulfide gas is very unstable, and every combustion fluctuation in the furnace is a big thermal shock to the furnace lining.
And this kind of acid gas furnace lining is made of refractory materials, so it is very important to resist acid corrosion and thermal shock stability. The main body of the furnace can adopt a three-layer structure. Corundum mullite bricks should be used for parts that are in direct contact with the flame. It is characterized by strong wear resistance and corrosion resistance. The middle layer can choose three grades of high alumina bricks. Because the working layer does not directly contact the flame, the flexibility of the three-grade high-alumina brick is relatively good. The outer layer can be used as an insulation layer, and high-aluminum heat-insulating refractory bricks are used to keep the temperature down and reduce the temperature of the outer wall of the steel shell.
- Corundum mullite brick is a refractory product composed of mullite as the main crystal phase and corundum phase, which is sintered at a high temperature of 1650-1750 °C. It has good high-temperature strength, high-temperature creep resistance, thermal shock resistance, and corrosion resistance.
- The third-grade high-alumina brick is a series of aluminum products made of high-alumina raw materials and clay as a binder fired at a temperature of 1400°C. High thermal stability, and strong flexibility.
- Lightweight high alumina brick. It has the characteristics of small bulk density, large porosity, low thermal conductivity, and specific heat capacity, and has good thermal insulation performance for heat insulation layers. In the case of slow heat dissipation, it can save fuel and reduce the temperature of the steel shell.
The incinerator burning hydrogen sulfide is one of the rare furnace types, so the corundum mullite brick in the refractory brick used for its refractory lining is a high-grade refractory material. High-alumina bricks are neutral materials, and lightweight high-alumina bricks are used as a three-layer masonry lining to effectively improve the corrosion resistance of the incinerator. The refractory mortar of the same material is used for masonry during construction to ensure the long-term safe and reliable operation of the incinerator.