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Ammonia escape monitoring sensor in SCR denitrification measurement and control system

Ammonia escape monitoring sensor in SCR denitrification measurement and control system

2024-03-15

With the in-depth implementation of my country's carbon neutrality plan, air pollution emission indicators are gradually tightened, and emission companies are facing more and stricter restrictions. While ensuring economy and efficiency, companies must put forward higher requirements for their own emission treatment and transformation.
In air pollution, nitrogen oxides are one of the main sources of pollution, mainly from combustion and chemical production processes. At present, major sewage discharge companies mainly use SCR/SNCR and polymer denitrification technologies. These technologies can basically achieve processing efficiencies of 90% and above, and are relatively mature.
However, existing denitrification technology still has some areas for improvement. The main principle is: under the action of a catalyst, ammonia is injected into the flue gas at a temperature of 280-420 degrees Celsius in real time to reduce NOx to N2 and water. To ensure that the reaction matches the flue gas emissions, the amount of ammonia injected must be precisely controlled , otherwise ammonia may escape.
Ammonia escape can cause many hazards. First, the escaped ammonia causes a waste of money and environmental pollution. Secondly, ammonia escape will corrode the catalyst module, causing catalyst deactivation and clogging, shortening its life. In addition, the escaped ammonia reacts with SO3 in the air to form corrosive and adhesive ammonium sulfate, which may cause clogging and corrosion of the air preheater heat storage components in downstream out-of-stock equipment.
Therefore, it is crucial to install ammonia escape monitoring equipment during the flue gas treatment process. The Gongcai Network recommends sensors for monitoring ammonia concentration in the denitrification ammonia escape online monitoring system : Japanese figaro ammonia sensor with high sensitivity and leak-proof linear output - FECS44-100
1. Japan figaro ammonia sensor with high sensitivity and leak-proof linear output FECS44-100 Description:
The ammonia sensor FECS44 is a unique electrochemical principle NH3 sensor. Its most striking features are low interference from H2S, excellent durability when exposed to NH3 and a unique leak-proof structure. These characteristics make the sensor better used in NH3 detectors and detectors.
2. Japanese figaro ammonia sensor, high sensitivity, leak-proof, linear output FECS44-100. Features: High
sensitivity to NH3,
little affected by H2S,
excellent durability when exposed to NH3,
linear output ,
long life,
stable baseline,
unique anti- Leakage structure
3. Japan figaro ammonia sensor, high sensitivity, leakage-proof linear output FECS44-100 Application:
portable and fixed NH3 detector
NH3 detector
refrigeration equipment NH3 leak detection

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