Rotational flow plate type SCR denitration tower and denitration method thereof

Abstract

The invention discloses a rotational flow plate type SCR denitration tower and a denitration method thereof. The denitration tower comprises a denitration tower body and a corrugated plate type catalyst layer arranged along the inner circumference face of the denitration tower body, and the corrugated plate type catalyst layer forms a flue gas channel. A plurality of layers of rotational flow atomizing nozzles performing jetting in the contact circle direction are distributed on the circumference face of the corrugated plate type catalyst layer from bottom to top. When flue gas enters the flue gas channel from the bottom of the denitration tower body, and the flue gas encounters ammonia gas jetted by the whirlwind atomizing nozzles, the flue gas and the ammonia gas are mixed in an entrainment mode and spirally raises in the inner circumference direction of the flue gas channel in a contact circle mode because the ammonia gas is jetted in a rotational flow mode in the contact circle direction. On the premise that efficient denitration is guaranteed, the catalyst use amount of the denitration tower is small, the technical means is easy and convenient to use. Compared with the prior art, the denitration tower is simple in structure, low in manufacturing cost, high in denitration efficiency and low in energy consumption, reduces the ammonia escape rate, makes denitration cost greatly reduced, and remarkably 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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