Reciprocating type vibration device for reducing soot formation blockage of SCR denitration catalyst, and working method thereof

Abstract

The invention discloses a reciprocating type vibration device for reducing soot formation blockage of an SCR denitration catalyst, and a working method thereof, and belongs to the technical field of SCR denitration. In the long-term operation process of the SCR denitration catalyst, the change of a flow field and the existence of a purging blind area in a soot blower easily cause the problem of soot accumulation and blockage on the surface of the catalyst around a reactor and seriously affects the safe and stable operation of a denitration system and a unit. Movable dust-proof nets are arranged in the areas, prone to soot accumulation blockage, of the front wall and the rear wall of the SCR reactor on the upper portion of the catalyst, a driving device is arranged to move up and down, andthe purpose of reducing catalyst soot formation is achieved in combination with dust blowing of the vibration device and the sound wave dust blower. The device is simple in structure, small in influence on the flow field of an existing denitration device, low in investment and operation cost and high in operability, has applicability to the SCR denitration device, can effectively solve the problemthat a catalyst is seriously blocked by accumulated dusts, has good environmental protection benefits and economic benefits and is wide in application prospect.

Description

technical field [0001] The invention belongs to the technical field of SCR denitrification, and in particular relates to a reciprocating vibrating device and a working method thereof for reducing fouling and clogging of an SCR denitrification catalyst. Background technique [0002] Selective catalytic reduction denitrification technology (SCR) is widely used in large coal-fired power plants due to its mature technology and high denitrification efficiency. Catalyst is the core of the whole denitrification device, most of which use TiO 2 as the carrier, V 2 o 5 / WO 3 Porous media for active components. At present, most SCR devices adopt high ash layout, and the problem of ash accumulation and clogging of denitrification catalysts is often unavoidable. Especially when there are large particles of fly ash or improper soot blowing in the local area of ​​the catalyst, the problem of ash accumulation and clogging of the catalyst will be aggravated. Engineering practice shows t...

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