News Center
Reaction-sintered silicon carbide, silicon carbide nozzles, radiation tubes, burners, heat-exchange tubes, silicon carbide furnace tubes, burners, silicon carbide plates
Design Features of Silicon Carbide Nozzles
Release time:
2022-06-25
High traffic Silicon carbide nozzle The spray pattern is hollow-conical, with a ring-shaped spray zone. Two series of spray angles are available, with the standard angle ranging from 70° to 90°. The nozzle body is entirely made from a silicon nitride-bonded silicon carbide material. These nozzles are designed for harsh operating environments and can produce uniformly distributed sprays with medium-to-large droplet sizes over a wide range of flow rates and pressures. Nozzles are available in sizes of 2", 3", 4", and 6". The high-flow nozzles feature large, smooth flow passages that virtually eliminate clogging.
Silicon carbide nozzles are made from a new type of ceramic material and feature exceptional properties such as high-temperature resistance, oxidation resistance, high strength, excellent resistance to both extreme cold and extreme heat, good thermal shock resistance, low thermal expansion at high temperatures, superior thermal conductivity, wear resistance, and corrosion resistance. As an energy-saving refractory material, they are widely used in high-temperature kilns across various industries—including sanitary ceramics, daily-use porcelain, electrical porcelain, magnetic materials, microcrystalline stone, powder metallurgy, and steel heat treatment—as well as in a variety of components fabricated from them. They are also increasingly being applied in fields such as power generation, papermaking, petroleum, chemical processing, mechanical sealing, water pumps, surface treatment, heat exchange, mineral processing, and aerospace.
Materials and Properties of Silicon Carbide Nozzles Silicon carbide nozzle Advantages and uses)
Definition and Main Applications of Desulfurization Nozzles: Desulfurization nozzles are used in power plants to remove sulfur dioxide and certain other pollutant gases from flue gas. Flue gas from coal-fired power plants and gas from coal-fired combined-cycle systems (used in gas turbines) share a common goal: desulfurization and denitrification (as well as dust removal, of course). If flue gas emitted by power plants is released into the atmosphere without undergoing desulfurization and denitrification, it will directly pollute the air. Similarly, untreated flue gas from combined-cycle systems can damage the hot-end components of gas turbines and also cause environmental pollution. Both domestically and internationally, extensive research and development have been conducted on technologies and equipment for purifying flue gas from power plants and gas from combined-cycle systems, and numerous nozzles have been employed in these technological solutions and devices.
The SO2 and NOx emitted from coal-fired power plants and other coal-burning equipment pose significant hazards to local areas or cities, primarily in the form of acid rain. Flue gas desulfurization in power plants can be categorized into dry and wet methods. In the dry method, the desulfurizing agent—lime slurry—is sprayed into the flue gas via rotating nozzles, where it reacts with SO2 to form solid ash, which is then removed by dust removal equipment. In the wet method, a solution of soluble limestone at a concentration of (0.01–0.05) g/L, combined with certain other chemical solutions, is sprayed onto the flue gas through numerous nozzles arranged inside an absorption tower. To achieve optimal absorption efficiency, the absorption tower is designed as a countercurrent system: the limestone solution is pumped by a circulating pump into spray layers at various heights within the tower, where liquid droplets are sprayed downward, counteracting the upward flow of flue gas. The air used for spraying must be carefully selected to ensure that the spray nozzles are made from wear-resistant, corrosion-resistant, and temperature-resistant materials, such as silicon carbide (N-SiC) ceramics. The arrangement of the desulfurization nozzles ensures that the spray coverage extends across the entire lateral surface of the absorption tower.
Recommended Content
Share
Shandong Huamei New Materials Technology Co., Ltd.
Address: Middle section of Cuifang Street, Fangzi District, Weifang City