Rotary-cut SCR denitration method and apparatus thereof

Abstract

The invention discloses a rotary-cut atomization SCR denitration method and an apparatus thereof. The apparatus comprises a denitrating tower body and a plate-type catalyst layer arranged along the periphery of the denitrating tower body, and a flue gas channel is formed by the plate-type catalyst layer; a flue gas introduction pipeline is arranged along the circumference tangential direction on a side wall of the bottom of the denitrating tower body; preliminary mixing of the flue gas and ammonia gas injected from an eddy flow atomizing nozzle is carried out in the flue gas introduction pipeline, then a mixture is injected into the flue gas channel along the circumference tangential direction of the denitrating tower body, then meets with the ammonia gas injected from the eddy flow atomizing nozzle of the flue gas channel, because that the ammonia gas in the flue gas channel is injected along the circumference tangential direction, and the flue gas is mixed mutually with the ammonia gas, and the mixture enables spiral rising in the tangent circle mode along the inner circumference of the flue gas channel. According to the apparatus, under prerequisite that high efficiency denitration is ensured, catalyst amount is less, compared with the prior art, a denitrating tower structure is simple, cost is low, denitration efficiency is high, energy consumption is low, ammonia escape is reduced, secondary pollution is avoided, and economic benefit is obviously increased.

Description

technical field [0001] The invention relates to flue gas denitrification, in particular to a rotary cutting SCR denitrification method and a device thereof. Background technique [0002] With the development of basic industries, my country's economy is developing rapidly, but the environmental problems caused by industrial pollution are becoming more and more serious. NO x It is the main source of air pollutants, and its massive discharge will cause great harm to the environment. For the sustainable development of the social economy and the maintenance of a good ecological environment, it is necessary to increase the pollution control of air pollutants NO x Emission control and governance efforts. Selective catalytic reduction (SCR), which is widely used in the world, is a method of controlling NO from exhaust gas. x effective method of emission. [0003] The current SCR method is to use NH 3 As a reducing agent, under the action of catalyst, NO x revert to harmless N...

AI Technical Summary

Problems solved by technology

It can not only realize the high-efficiency denitrification of flue gas, but also solve the problems of easy ash accumulation, catalyst failure and ammonia escape that often occur in the prior art

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