CFD Modeling

      Longking fluid simulation center was established in 2005, which is specialized in the research of CFD simulation technology in ESP, desulfurization and DeNOx. We've been cooperated with many universities both from home and abroad, such as Tsinghua University, Zhejiang University, University of new south wales from Australia, Monash University, Granular Technology Pty Ltd, Southeast University, North China Electric Power, Wuhan University of Science and Technology, Shanghai Jiaotong University, etc. At present, longking fluid simulation center has been equipped with mature and perfect CFD simulation technology in the design of electric (bag) dust removal, denitrification, desulfurization, and flue gas treatment island, etc. It has undertaken more than 500 CFD simulation projects of dust removal, desulfurization and denitrification projects at home and abroad, and has rich engineering practice experience.

Main application areas of Longking fluid simulation center includes: Precipitors, Denitrification, Defulfurization, Flue gas treatment island.

Longking fluid simulation center is equipped with professional equipment and ability to carry out field fluid diagnosis test, fluid CFD numercial simulation and fluid physical model simulation experiment.

Test Instrument:  KANOMA interlligent environment tester, YC521N-k thermometer
Flow field is the key factor that affects the NOx removal effiency, ammonia slip rate and catalyst life.

Problems exist in SCR DeNOx system：

Low DeNOx effiency, high ammonia slip rate, catalyst erosion and plugging, high pressure drop, heavy dust in stack, plugging in air preheater.

Flow field reasons for the above problems：

1. Ammonia nitrogen unevenly mixed; 
2. Uneven flue gas velocity in catalyst layer, which is easily to cause erosion in high flue gas velocity area, and heavy dust plugging in low velocity area. 
3. Improper guide plate which is easily to increase the pressure drop and dust accumulation in stack.
4. ABS produced by ammonia slip will stick to the air preheater, and result the plugging and erosion of it.

Case study before and after flue field optimization