Defects of Cast Steel Nozzle
cast steel nozzles mainly include the following aspects.
1. Cast steel nozzle is not wear-resistant, corrosion-resistant, not high temperature resistant, short service life. Need to stop furnace replacement, resulting in great economic losses.
2. The cast steel nozzle is easy to be damaged during the operation of the unit, and the blunt body of the nozzle often falls off, which threatens the operation of the burner and the safe operation of the slag fishing machine.
3. As the nozzle is made of G40Cr20Ni5, this material works at high temperature for a long time. When the pulverized coal burns unstable, it will cause uneven temperature distribution in the furnace or coking at the nozzle, which will cause thermal stress at the nozzle due to temperature difference, resulting in severe local deformation of the nozzle, shorter primary air range and poor rigidity. The pulverized coal will catch fire not far from the nozzle, and the temperature near the nozzle will be high, resulting in local additional stress, when the temperature fluctuation is large, the thermal stress changes greatly, resulting in the formation of thermal fatigue cracks on the nozzle surface, a long time, resulting in burner nozzle and nozzle burning.
4. Because the primary air flow is a high-speed gas-solid two-phase flow, the uneven scouring of pulverized coal particles leads to serious local wear of the bluff body and even the bluff body is worn away. On the other hand, the nozzle and the bluff body are integrated. On the other hand, the thermal stress at high temperature is easy to cause the nozzle to produce serious deformation and even burn out, so the nozzle cannot play its due role. How to choose
silicon carbide nozzle cleaning agent, silicon carbide nozzle manufacturer tells you
Suzhou shanchunyi monitoring program control equipment manufacturing co., ltd. has excellent technical team, many engineers and relevant technical background of boiler factory. With experience in large-scale overseas projects such as Pakistan Muza and Iran Sahante, it supports complex customization and brings forth new strengths through the old. It develops more than 8 new products every year, with an annual production capacity of 600 sets and a guaranteed supply cycle.
On November 8th, our company participated in the Operation and Maintenance Branch of the China Electric Power Technology Market Association and held the 2023 Annual Conference on Experience Exchange of Boiler Wear and Explosion Prevention Technology in Thermal Power Plants in Zhengzhou. We introduced the application of our silicon carbide burner nozzles, silicon carbide burner primary air ducts, swirl burners, silicon carbide wear-resistant elbows and other products in thermal power generation.
On October 25th, our company participated in the 9th Petrochemical Equipment Operation and Maintenance Management and Maintenance Technology Conference held in Xiamen in 2023, introducing wear-resistant and corrosion-resistant silicon carbide products and promoting their application in petrochemical systems.
On April 26th, our company participated in the 2023 National Thermal Power Plant Flexibility Deep Peak shaving Transformation Technology Annual Conference held in Zhengzhou, introducing the application of our silicon carbide wear-resistant products (silicon carbide burners, silicon carbide central air ducts, silicon carbide elbows, silicon carbide wear-resistant pipes, etc.) in thermal power plants. We had in-depth exchanges with the experts at the conference, providing new wear-resistant products for thermal power plants and extending their service life, Extended maintenance cycles and reduced maintenance costs. Received recognition and affirmation from attending users.