A swirl plate type SCR denitrification tower and denitrification method thereof

Abstract

The invention discloses a swirl plate type SCR denitrification tower and a denitrification method thereof, comprising a denitrification tower body and a corrugated plate catalyst layer arranged along the inner peripheral surface of the denitrification tower body, the corrugated plate catalyst layer constituting a flue gas channel. Along the circumferential surface of the corrugated plate catalyst layer, a plurality of swirl atomizing nozzles sprayed in a tangential direction are distributed from bottom to top. When the flue gas enters the flue gas channel from the bottom of the denitrification tower body and meets the ammonia gas sprayed by the swirling atomizing nozzle, the flue gas and ammonia gas are entrained and mixed with each other because the ammonia gas swirls out along the tangential direction. , and spirally rises along the inner circumference of the flue gas channel in a tangential circle manner. Under the premise of ensuring high-efficiency denitrification, the denitrification tower uses less catalyst, and the technical means are simple and easy to implement. Compared with the existing technology, the denitrification tower not only has simple structure and low cost, but also has high denitrification efficiency, low energy consumption, reduces the escape rate of ammonia, greatly reduces the cost of denitrification, and significantly improves economic benefits.

Description

technical field [0001] The invention relates to flue gas denitration, in particular to a swirl plate type SCR denitration tower and a denitration method thereof. Background technique [0002] With the intensification of the greenhouse effect and smog weather, the power, petrochemical and other industries are facing great pressure on flue gas treatment and pollutant control, and gradually increased the main pollutant NO in flue gas. x emission control. In order to protect the environment, NO x Govern, fundamentally govern NO x The pollution caused by discharge is imperative. [0003] The currently widely used denitrification method is selective catalytic reduction (SCR). The method is to use NH 3 As a reducing agent, under the action of catalyst, NO x revert to harmless N 2 , so as to remove NO from the flue gas x . Selecting a suitable catalyst is the core of SCR technology, and the catalyst structure generally has three types: honeycomb type, flat plate type and co...

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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