Zhengzhou Jinquan Precious Metal Refining Equipment Co., Ltd. Supplier of precious metal refining technology and equipment
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What are the factors that affect the NOx emission concentration


1. Factors affecting denitration efficiency

Due to the different quality of coal in different areas, the CO combustion of coal is the same. Therefore, a large amount of flue gas will appear when burning some low heat coal; on the contrary, if some high heat coal is used, the amount of flue gas will be very small. If the calorific value of coal is relatively low, its moisture content is relatively small, and the temperature of flue gas generated by combustion will be very high, and the amount of flue gas will generally reduce the rate of out of stock on a certain basis. Due to the change of coal quality, the requirements for SCR unit and catalyst are also very high.

2. Flue gas temperature

The main reason for the denitrification rate is that the exhaust gas temperature of the boiler is different. In the selection of SCR process in thermal power plants, the flue gas temperature range of the boiler is usually 871-1038 ℃, and the reductant is mainly nitrogen, which has corresponding changes; when the temperature does not reach 871 ℃, the reaction will be incomplete, which will reduce the sell off rate, and the escape rate of nitrogen itself will also increase, which will cause double pollution. SNCR method can also use urea as reducing agent, mix with water to make a certain concentration of liquid, and then add it to the flue gas with temperature of 927-1093 ℃, so as to ensure the same effect as ammonia injection.

Zhengzhou Jinquan mining and Metallurgical Equipment Co., Ltd. is located in the electronic and Electrical Industrial Park of Zhengzhou high tech Zone, Henan Province. It is 2km away from gouzhao exit of Lianhuo Expressway and 60km away from Zhengzhou airport. The company specializes in the smelting, refining and environmental protection of precious metals (gold, silver, platinum, palladium and rhodium), including technology research and development, equipment development, technology promotion, production process design, workshop and plant design, general contracting of precious metal refining engineering, general contracting of laboratory construction projects, and pilot production guidance.

The products are: high current density silver electrolytic unit, high current density gold electrolytic unit, swirl electrowinning unit, platinum palladium rhodium refining and purification production system equipment, medium frequency furnace, high frequency furnace, ingot vacuum casting machine, bead spreader, wet gold refining process equipment, gold mud controlled electric chlorination production system equipment, polypropylene storage tank, flue gas absorption tower, nitrogen oxide flue gas Processing system equipment, gold refining mold, fire assay ash dish, lead skin for assay, rhodium refining special reagent.

 The authorized products are: titanium reaction kettle, glass reaction kettle, enamel reaction kettle, electrolytic rectifier power supply, glass condenser, water chiller, oil pressure machine, laser marking machine, steam generator, aluminum tank, anti-corrosion pump valve, hardware and electrical equipment and other common equipment of rare and precious plants.


Post time: May-13-2020