SCR denitration reactor

Abstract

An SCR denitrification reactor has a reactor body, the reactor body has an upper air inlet and a lower air outlet, the reactor body is provided with a multi-layer denitrification catalyst, and is connected by an angled flue at the inlet end Intake flue; there is a set of flue gas guiding device in the corner flue, and the flue gas guiding device includes a number of guide vanes arranged side by side. 130 to 160 degrees; on the deflector, the angle β between the flat plate arranged on the side of the air inlet flue and the horizontal plane ranges from 45 to 50 degrees; A number of air holes; the invention has a simple structure and ingenious design, which ensures that the input flue gas (including ammonia, oxygen and NOx) is evenly distributed on the denitration catalyst, increases the contact time and contact area of ​​the catalytic reaction, and effectively improves the The reaction efficiency of the SCR denitration reactor saves the reaction cost.

Description

technical field [0001] The invention relates to the technical field of environmental protection equipment, in particular to an SCR denitrification reactor. Background technique [0002] The SCR flue gas denitrification system is a system that uses the selective catalytic reduction method to denitrify the flue gas. The SCR flue gas denitrification technology refers to the low temperature range (usually 310-420°C) in the presence of catalyst and oxygen. , A reducing agent (generally using ammonia) selectively reduces NOx in the flue gas to generate N2 and water to reduce NOx emissions. [0003] The SCR denitrification reactor in this system is very critical equipment. However, it has been found in practice that the flue gas guiding device at the inlet end of the existing SCR denitrification reactor has a complex structure and unreasonable design, resulting in the flue gas (comprising ammonia, oxygen and NOx) cannot be evenly distributed on the denitration catalyst for cataly...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the complex structure and unreasonable design of the flue gas guide device of the current SCR denitrification reactor, which leads to a great reduction in the reaction efficiency of the SCR denitrification reactor, and the nitrogen oxides (NOx) at the air outlet of the SCR denitrification reactor The problem of excessive ammonia escape, causing huge economic losses, provides a high-efficiency SCR denitrification reactor

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