DENITRIFICATION CATALYST STRUCTURE

To provide a denitrification catalyst structure capable of realizing a high denitrification rate by improving a contact efficiency with a catalyst component, by preventing without stopping a gas flow passing between an inner surface of a frame body and an edge present at a side of each plate-like catalyst element.SOLUTION: A denitrification catalyst structure includes: a rectangular frame 5; a plurality of plate-shaped catalyst elements A and B containing catalyst components; and a plate-shaped draft stopper C. A plurality of plate-shaped catalyst elements are stacked and stored in a frame with their edges on both sides aligned, with gaps, through which gas can pass, existing respectively between the stacked plate-shaped catalyst elements and between the edges aligned with the inner surface of the frame, and the plate-shaped draft stopper is housed along an inner surface of the frame between the inner surface of the frame and the aligned edges. The plate-shaped draft stopper can fill the gap between the inner surface of the frame and the aligned edges without stopping the flow of gas, and can prevent the plate-shaped catalyst element from being biased.SELECTED DRAWING: Figure 1 【課題】枠体の内面と各板状触媒エレメントの脇に在る縁との間を通過するガスの流れを止めることなく妨げ、触媒成分への接触効率を向上させて、高い脱硝率を実現できる、脱硝触媒構造体を提供する。【解決手段】脱硝触媒構造体は、矩形の枠体５と、触媒成分を含有する板状触媒エレメントＡ、Ｂを複数枚と、板状ドラフトストッパＣとを含有する。板状触媒エレメントは、両脇の縁をそれぞれ揃えて複数枚積み重ねて枠体の中に収納されており、積み重ねた板状触媒エレメントの間、枠体の内面と揃えた縁との間に、それぞれガスの通過できる隙間が在り、板状ドラフトストッパは、枠体の内面と、揃えた縁との間に枠体の内面に沿うように収納されている。板状ドラフトストッパにより、枠体の内面と、揃えた縁との間を、ガスの流れを止めることなく埋めることができ、板状触媒エレメントの偏りを妨げることができる。【選択図】図１