Ammonia injection system

The working principle of ammonia injection system is based on the monitoring and control of process parameters to realize the precise injection of ammonia.

Classification:

Boiler Steel Structure Series

Keyword:

huangys@qdset.com

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Details

The working principle of ammonia injection system is based on the monitoring and control of process parameters to realize the precise injection of ammonia. Taking the common denitrification ammonia injection system as an example, firstly, liquid ammonia is delivered from the liquid storage tank through the ammonia pump, and fully mixed with the air delivered by the dilution fan in the ammonia/air mixer. Then, according to the SCR inlet and outlet NOx, O₂ monitoring analyzer measurements, flue gas temperature measurements, flue gas flow and other parameters, the required ammonia injection volume is calculated. Based on the calculation results, the controller controls the opening of the ammonia flow control valve to precisely regulate the flow of the ammonia/air mixture. Finally, the gas mixture is injected through the ammonia injection grid into the inlet flue of the reactor, where it mixes well with the flue gas and enters the SCR reactor, where the denitrification reaction takes place, converting the nitrogen oxides in the flue gas into harmless nitrogen and water.
Application
Flue gas denitrification: In thermal power generation, steel, cement and other industrial fields, the combustion process generates a large amount of flue gas containing nitrogen oxides (NOx). Ammonia injection system, as a key component of selective catalytic reduction (SCR) denitrification process and selective non-catalytic reduction (SNCR) denitrification process, injects ammonia into the flue gas, and under catalyst (SCR process) or specific temperature conditions (SNCR process), ammonia reacts chemically with NOx and converts it into nitrogen and water, so as to achieve the purpose of lowering the emission of NOx in the flue gas and reducing the environmental pollution. The purpose of this process is to reduce NOx emission from flue gas and reduce environmental pollution.
Water treatment: Ammonia injection system is also important in the process of water purification and treatment.

█ Corporate Advantage

Qingdao Shengertai Equipment Co., Ltd. is located in the center of Jiaozhou City, on the west coast of Jiaozhou Bay in Qingdao, with the Jiaoji Railway and the northern line of the Jinan-Qingdao Expressway in the north; the Qingdao Sea Ring Highway, the southern line of the Jinan-Qingdao Expressway, and the western port of Qingdao Port in the south; the port of Qingdao and Qingdao JiaoDong International Airport in the east; and the ShenHai Expressway in the west. The geographical position is superior and the transportation is very convenient.

█ Production Equipment

The company covers an area of 40,000 square meters, production workshop area of 24,000 square meters, open raw material yard area of 2,500 square meters, R & D site of 2,000 square meters, the annual supporting the production of various types of steel structure products more than 20,000 tons; electric power equipment, boiler auxiliary equipment, environmental protection equipment, casting equipment, a total of more than 200 sets. Has become a centralized enterprise Dongfang Electric, state-owned enterprises Shanghai Electric, centralized enterprises Huaneng, centralized enterprises Huadian, Huaxi Energy, Nanjing Zhongdian Environmental Protection Science and Technology Company Limited and other high-quality qualified suppliers, the products are well received by users.

█ Honors

The company is a high-tech enterprise in Qingdao, Shandong Province and Qingdao City, “Specialized, Specialized and New” enterprises. The company mainly produces biomass power boilers, waste incineration boilers, boiler steel structure for thermal power plants, denitrification steel structure, boiler auxiliary equipment, environmental protection equipment, casting equipment and other products. With advanced manufacturing equipment, scientific process, strong technical force and complete quality inspection means, the company has passed ISO9001 quality system certification, environmental management system certification and occupational health and safety management system certification. The company has obtained the qualifications of China Steel Structure Manufacturing Enterprise Grade II Qualification Certification, China Construction Enterprise Grade II Qualification for Professional Contracting of Steel Structure Engineering, and Safety Production License for Building Construction.