Corrosion-resistant reaction sintered silicon carbide flue gas desulfurization nozzle for power plant chemical applications

The service life of silicon carbide desulfurization nozzles is 10-20 times that of ordinary metal nozzles and 4-7 times that of alumina ceramic nozzles, making them particularly suitable for use under harsh conditions. Silicon carbide nozzles are key components in dust removal and desulfurization systems for large coal-fired equipment such as thermal power plants, steel mills, and large boilers. Introduction to Silicon Carbide Reaction-bonded silicon carbide (SiSiC) products feature high strength, high hardness, high wear resistance, high-temperature resistance, corrosion resistance, resistance to rapid cooling and heating, oxidation resistance, excellent thermal shock resistance, good thermal conductivity, and thermal stability. They are widely used in ceramic machinery, metallurgy, electronics, chemical engineering, petroleum, steel, building materials, papermaking, mining, and other fields. Main Performance Characteristics High-temperature resistance and high strength. Below 1380°C, silicon carbide's high thermal conductivity and low thermal expansion give it excellent thermal shock resistance. It also possesses high strength and resistance to creep and stress fracture. High hardness and wear resistance. Silicon carbide is one of the hardest materials, second only to diamond, and can withstand severe abrasive and sliding wear. It is corrosion-resistant, oxidation-resistant, and erosion-resistant. The high density, low porosity, and chemical inertness of silicon carbide allow it to be used not only in high-temperature gas and liquid environments but also in strong acids and alkalis with oxidizing and corrosive atmospheres. Double Hollow Cone Tangential Nozzle Silicon carbide nozzles are a new type of ceramic material with characteristics such as high-temperature resistance, oxidation resistance, high strength, resistance to extreme cold and heat, excellent thermal shock resistance, low high-temperature deformation, good thermal conductivity, wear resistance, and corrosion resistance. Silicon carbide nozzles are used in power plant desulfurization to remove sulfur dioxide and other polluting gases from flue gas. Both coal-fired power plant flue gas and gas from integrated coal gasification combined cycle systems share the common task of desulfurization and denitrification (as well as dust removal). Flue gas discharged from power plants without desulfurization and denitrification directly pollutes the atmospheric environment, while untreated gas in combined cycle systems can damage the hot-end components of gas turbines, and their exhaust also pollutes the environment. Components made from silicon carbide are gradually being applied in power generation, papermaking, petroleum, chemical engineering, mechanical seals, water pumps, surface treatment, heat exchange, mineral processing, aerospace, and other fields. Double Hollow Cone Tangential Nozzle In the desulfurization tower, one nozzle sprays upward and one sprays downward to provide a uniform spray distribution. It can also be designed with different liquid flow rates for the upper and lower spray holes, such as 80% upward and 20% downward. Hollow Cone Tangential Nozzle Limestone slurry enters the vortex chamber of the nozzle tangentially and is sprayed out through the nozzle orifice at a right angle to the inlet direction. The nozzle is formed by integral injection molding with no internal separation parts. The maximum particle size that can freely pass through the nozzle is about 80% of the nozzle orifice size. Multiple angles and flow rates are available. It features high strength, high hardness, resistance to strong corrosion, severe wear, high-temperature resistance, and other excellent properties, with an ultra-long service life under harsh conditions. Silicon carbide nozzles are used in power plant desulfurization to remove sulfur dioxide and other polluting gases from flue gas. Both coal-fired power plant flue gas and gas from integrated coal gasification combined cycle systems share the common task of desulfurization and denitrification (as well as dust removal). Flue gas discharged from power plants without desulfurization and denitrification directly pollutes the atmospheric environment, while untreated gas in combined cycle systems can damage the hot-end components of gas turbines, and their exhaust also pollutes the environment.