Novel reaction device for SCR (selectively catalytic reduction) denitration catalyst

Abstract

The invention provides a novel reaction device for SCR (selectively catalytic reduction) denitration catalyst. The reaction device comprises a guide plate, a flue gas rectifier, a plurality of catalyst layers and a plurality of corresponding fireproof and wearproof layers, wherein the guide plate is arranged at an inlet of the reaction device; the flue gas rectifier is arranged behind the guide plate; the plurality of catalyst layers are sequentially arranged behind the guide plate; and one corresponding fireproof and wearproof layer is arranged in front of each catalyst layer. Compared with the prior art, the novel reaction device has the following advantages: (1) the denitration catalyst arrangement form is improved by the utilization of an original SCR denitration device, the flue gas rectifier and the fireproof and wearproof layers are added, so that the catalyst is effectively prevented from being sintered and worn, wherein the first fireproof and wearproof layer can be used for effectively preventing the catalyst from being sintered and worn, while the second layer and the fireproof and wearproof layers behind the second layer can be used for effectively preventing the catalyst from being worn; and (2) the cost of improving the arrangement form of the SCR denitration catalyst is low, and the investment cost and the later-period management cost are greatly saved.

Description

technical field [0001] The invention relates to a denitration catalyst reaction device, in particular to a novel SCR denitration catalyst reaction device. Background technique [0002] Nitrogen oxides (NO x ) is one of the major air pollutants recognized around the world. NH 3 Selective catalytic reduction (Selective Catalytic Reduction, SCR) flue gas denitrification technology is the most advanced technology for removing NO in flue gas so far x The most effective method has been widely used in developed countries such as Europe, the United States, and Japan, and its application in my country is still in its infancy. Catalyst is the core of SCR flue gas denitrification technology, and its life is an important factor affecting the economics of SCR process. [0003] In a high-temperature combustion environment, SCR catalysts, like other industrial catalysts, have the problem of reduced activity or deactivation. There are many reasons for the deactivation of the SCR cataly...

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Problems solved by technology

[0006] The invention proposes a novel SCR denitrification catalyst reaction device, which solves the disadvantage of high cost of SCR denitrification modification in the prior art

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