Product Brief
SNCR Denitrification Kit
The SNCR denitrification kit is mainly used for waste incinerator denitrification process, namely SNCR. According to this process, at the high temperature (800°C~1000°C), Nox is reduced to N₂ by reductant such as ammonia or urea, which does not need catalyst. The incinerator temperature allows the reduction reaction completed in the waste incinerator. The system has the advantages of low investment, simplicity, convenience and high efficiency. Under this system, NOX in MSWI flue gas can be reduced from 400mg/Nm³ to 200 mg/Nm³ below. The denitrification efficiency is more than 50%.
Specification & Series：This equipment is suitable for the denitrification treatment of flue gas from MSWI waste incinerators in large, medium and small towns in China. According to the project size, the process equipment is calculated and is non-standard equipment.
- Processing Capacity：It is suitable for waste incinerators of the single line waste throughput ≥ 300t/d
- Application Fields：Location: indoor ;
Plant voltage level: AC： 380V\220V，50H;
Reductant: urea or ammonia.
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Advantages & Features
- The system and equipment selection can be calculated according to the combustion condition of the boiler in different projects. On this basis, the fluid numerical modeling computer simulation can guide the equipment design, selection and non-standard customization;
- It can optimize the system and the process design, and reduce system costs. It has strong controllability, high-quality equipment, and long service life.
Working Principle
Selective Non-Catalytic Reduction means that at the flue gas temperature of 850~1100°C, existing with O₂, the denitration agent such as NH₃ or (CO(NH₂)₂) is directly added to the furnace. 8~25% NH₃ is added to the furnace under 0.3-0.7 pressure to reduce NOx to nitrogen and water at high temperature. The denitration efficiency is more than 50%. The process does not need the catalyst, which can avoid catalyst blockage or poisoning.
Technical Parameters
| Technological parameters | |
|---|---|
| Reaction temperature | 850℃ 1000℃ |
| Reductant concentration | 5-8% |
| NOX removal efficiency | ＞50% |
The Application Achievements
The equipment has been successfully applied to Xiangyang MSWI power plant, Ganzhou MSWI power plant, Gu'an County MSWI power plant, with good treatment effect. The main equipment (including spray gun and nozzle) of SNCR system and valves are running normally. The atomization performance of the double fluid spray gun meets the design requirements; the corresponding automatic control system can detect, display, adjust, interlock and manage the flow and liquid level; and can record the process parameter data on site, so as to monitor the whole production process conveniently. NOX emission index is lower than 200mg/Nm3, reaching the advanced level in China.
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