Online monitoring device for dust removal, desulfurization, and denitrification of kiln boiler

The online monitoring solution for flue gas denitrification will increase the mandatory hard indicator of "denitrification" during the 12th Five Year Plan period for energy conservation and emission reduction; It is expected that during the 12th Five Year Plan and 13th Five Year Plan periods, the country's investment demand in this field will reach trillions of yuan respectively. During the 12th Five Year Plan period, the country will also include nitrogen oxides in the total control range of energy conservation and emission reduction, and the essence of controlling nitrogen oxides is "denitrification"; In the future, mandatory "denitrification" will be implemented like mandatory "desulfurization". Thermal power plants, garbage incineration plants, and cement plants, among others, are the main sources of NOx emissions, and their emission reduction has received special attention. summary

Denitration SNCR/SCR refers to the process of reducing nitrogen oxides in flue gas to harmless nitrogen and water with reducing agent NH3 in the presence of oxygen and heterogeneous catalyst. It is a denitration method widely used in China at present. During the denitrification process, it is necessary to monitor the NOX, O2 at the inlet and the NOX, NH3, O2 at the outlet. Our company's self-developed and produced denitrification online monitoring system products include: flue gas denitrification monitoring system, ammonia escape online analyzer, imported products from the UK's Shifumei and Sike McHack companies.

Composition of the plan

The TK-1000 series flue gas continuous monitoring system uses UV differential technology to measure NO, NO2, and SO2; The system adopts an "expansion pulse blowing", dual condensate drainage, and imported peristaltic pump to extend the pump's lifespan, as well as ultraviolet differential spectroscopy instruments to ensure stable and long-term use of the equipment. TK-1100 ammonia escape analyzer adopts high temperature pumping method and uses tunable laser analysis technology to measure NH3 and other gases. The system is equipped with the sample gas pre-treatment system independently developed by our company. The method of 220-260 ℃ high temperature extraction throughout the process is adopted to avoid sampling blockage caused by the crystallization of sample gas SO3 and NH3. The TK-1100W type flue gas monitoring system measures NH3, NOX and O2 for the in place denitration integrated machine, integrates tunable laser analysis technology and ultraviolet differential technology, and can simultaneously analyze NH3 gas and NO, NO2, SO2 gas. Customers can choose multiple combination solutions according to their needs. For more information, please feel free to call (WeChat synchronization): 15713691937.

The tunable laser analysis technology is used to sample and measure NH3. Compared with the in-situ method, it is not affected by dust, temperature and pressure fluctuations in the flue, and can realize online calibration;

The use of UV differential absorption technology to measure NOX has the advantages of completely unaffected measurement accuracy by moisture and dust (gas phase water has no absorption in the UV band, while liquid phase water and dust have no selectivity for absorption of UV light, belonging to slow spectral changes), low detection lower limit, and small temperature drift;

There are no moving components in the system, with high reliability and short response time.

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