A Matrix Type Ammonia Injection Grille with Mixing Device

Abstract

The invention discloses a matrix type ammonia spraying grille with mixing devices. The matrix type ammonia spraying grille comprises gas spraying pipes (1), gas inlet pipes (2) and spray nozzles (3), wherein the gas spraying pipes (1) are equidistantly arranged and are of matrix type arrangement, one spraying unit consists of 1-10 gas spraying pipes (1), the middle parts of the gas spraying pipes (1) of each spraying unit are connected together by connecting pipes (4), and the gas inlet pipes (2) are arranged on the connecting pipes (4); and the spray nozzles (3) are respectively arranged on each gas spraying pipe (1). The matrix type ammonia spraying grille further comprises more than one mixing device (5), wherein the mixing devices (5) are respectively arranged relative to each longitudinal column of spray nozzles (3). According to the matrix type ammonia spraying grille, the distance of mixing of flue gas and ammonia gas can be shortened, so that the flue gas and the ammonia gas can be mixed more uniformly; and the matrix type ammonia spraying grille has better anti-clogging and wear-resisting properties, can be used for effectively lowering resistance to the flue gas and is more energy-saving and more efficient.

Description

technical field [0001] The invention relates to a matrix ammonia injection grid with a mixing device, which belongs to the technical field of environmental protection. Background technique [0002] In the prior art, flue gas denitrification usually adopts SCR catalyst reduction method. In this denitrification method, the mixing degree of ammonia gas and flue gas is directly related to the denitrification efficiency. In the existing equipment, the ammonia injection grid is used to complete the ammonia injection grid. Now Some ammonia injection grills are installed in the flue, and the structure is relatively simple. The sprayed ammonia gas is directly mixed with the flue gas, the mixing distance is long, and the mixing is not uniform enough. After the ammonia injection grill is installed in the flue, the resistance of the flue gas is relatively large. , and it is prone to clogging, accelerated wear and corrosion under the working conditions of high dust and flue gas, which se...

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Problems solved by technology

[0002] In the prior art, flue gas denitrification usually adopts SCR catalyst reduction method. In this denitrification method, the mixing degree of ammonia gas and flue gas is directly related to the denitrification efficiency. In the existing equipment, the ammonia injection grid is used to complete the ammonia injection grid. Now Some ammonia injection grills are installed in the flue, and the structure is relatively simple. The sprayed ammonia gas is directly mixed with the flue gas, the mixing distance is long, and the mixing is not uniform enough. After the ammonia injection grill is installed in the flue, the resistance of the flue gas is relatively large. , and it is prone to clogging, accelerated wear and corrosion under the working conditions of high dust and flue gas, which seriously affects the denitrification efficiency

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