Method for optimizing ammonia nitrogen mole ratio distribution of SCR denitration system
A technology of ammonia nitrogen molar ratio and denitrification, applied in separation methods, chemical instruments and methods, general control systems, etc., can solve problems such as air preheater blockage, high ammonia escape at the outlet, and uneven distribution of NOX concentration at the outlet
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[0066] Such as figure 1 As shown, the implementation steps of the method for optimizing the molar ratio distribution of ammonia nitrogen in the SCR denitrification system in this embodiment include:
[0067] 1) Detection and acquisition of NO at the entrance of the SCR denitrification system in each control cycle X Concentration distribution;
[0068] 2) Detect and obtain NO at the outlet of the SCR denitrification system in each control cycle X Concentration distribution and NH 3 Concentration distribution;
[0069] 3) In each control cycle, the gate control area of each branch pipe of the ammonia injection grid of the SCR denitrification system is regarded as a node, based on the NO in the outlet area corresponding to each node X Concentration distribution and NH 3 Concentration distribution, NO in inlet zone X Concentration distribution calculation of ammonia nitrogen molar ratio m at each node i , according to the ammonia-nitrogen molar ratio m of each node i Cal...
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