SCR Flue Gas Denitration Technology and Equipment
SCR Flue Gas Denitration Technology and Equipment
SCR stands for "Selective Catalytic Reduction," a mature commercial technology for NOx control. Its principle involves using liquid ammonia as a reductant, which selectively reacts with NOx in flue gas at temperatures between 280 to 420℃ under the action of a catalyst. The reaction produces harmless and non-polluting N2 and H2O, effectively removing NOx from the flue gas. The catalyst used can be either honeycomb or plate type, and NOx and NH3 in the flue gas react almost at a 1:1 molar ratio, achieving a denitrification efficiency of 80 to 90%.
Overview
SCR stands for "Selective Catalytic Reduction," a mature commercial technology for NOx control. Its principle involves using liquid ammonia as a reductant, which selectively reacts with NOx in flue gas at temperatures between 280 to 420℃ under the action of a catalyst. The reaction produces harmless and non-polluting N2 and H2O, effectively removing NOx from the flue gas. The catalyst used can be either honeycomb or plate type, and NOx and NH3 in the flue gas react almost at a 1:1 molar ratio, achieving a denitrification efficiency of 80 to 90%.
This technology and products are suitable for denitration of low temperature kiln flue gas.
Performance features
(1) The flue gas denitration efficiency is high, which can reach 80~90% under normal conditions; the denitration reaction is sufficient, and the ammonia escape rate is less than 3ppm; the conversion rate of SO2 to SO3 is less than 1%.(2) High quality catalyst is used to effectively ensure the service life of catalyst and denitration efficiency.
(3) Use of cellular or plate catalyst unit design.
(4) The reactor is designed as an integral suspended structure, and the high temperature steel structure design concept is fully introduced to effectively avoid the harm caused by high temperature thermal expansion.
(5) The inlet flue and internal wind speed of the reactor are designed reasonably to ensure the stability of the internal flow field.
(6) The special gas distribution device effectively ensures the uniform mixing and distribution of flue gas and ammonia.
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