SCR denitration reactor with soot blower

Abstract

An SCR denitration reactor with a soot blower relates to the technical field of chemical equipment. A smoke inlet is fixedly formed in the upper portion of the left side wall of a reactor body, a smoke outlet is fixedly formed in the lower portion of the right side wall of the reactor body, and a plurality of catalytic beds are arranged in the reactor body. The reactor further comprises a vibration ash removal mechanism, a first box body, a second box body and an air injection mechanism. The first box body and the second box body are fixedly arranged on the left side wall and the right side wall of the reactor body correspondingly, and the vibration ash removal mechanism is arranged in the first box body. Screen plates are fixedly arranged in the box bodies on the upper sides of the catalytic beds, transmission rods are fixedly arranged on the left side walls of the screen plates, the transmission rods penetrate through the left side wall of the reactor body and then extend into the first box body, dust does not directly fall on the upper side faces of the catalytic beds, the dust blowing amount of the catalytic beds is reduced, meanwhile the dust is prevented from being accumulated on the screen plates, and the dust is vibrated and floated; and a reciprocating soot blowing mode is adopted, so that the phenomenon of uneven soot blowing caused by distance is avoided.

Description

technical field [0001] The invention relates to the technical field of chemical equipment, in particular to an SCR denitrification reactor with a soot blowing device. Background technique [0002] Selective catalytic reduction denitrification technology (SCR) is widely used in large-scale coal-fired power plants due to its mature technology and high denitrification efficiency. The catalyst is the core of the entire denitrification device, and most of them use TiO 2 as the carrier, V 2 o 5 / WO 3 It is a porous medium with active components; at present, most SCR devices adopt high ash layout, and the problem of denitrification catalyst fouling and clogging is often unavoidable; especially when there are large particles of fly ash or improper soot blowing in the local area of ​​the catalyst, it will aggravate the The problem of ash accumulation and clogging, and engineering practice shows that the problem of ash accumulation and clogging around the SCR denitrification reacto...

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Problems solved by technology

[0002] Selective catalytic reduction denitrification technology (SCR) is widely used in large-scale coal-fired power plants due to its mature technology and high denitrification efficiency. The catalyst is the core of the entire denitrification device, and most of them use TiO 2 as the carrier, V 2 o 5 / WO 3 It is a porous medium with active components; at present, most SCR devices adopt high ash layout, and the problem of denitrification catalyst fouling and clogging is often unavoidable; especially when there are large particles of fly ash or improper soot blowing in the local area of ​​the catalyst, it will aggravate the The problem of ash accumulation and clogging, and engineering practice shows that the problem of ash accumulation and clogging around the SCR denitrification reactor is particularly serious; ash accumulation and clogging on the surface of the denitrification catalyst will easily cause changes in the flow field in the reactor, deviate from the design requirements, and will increase catalyst wear and tear. The risk of increased ammonia escape concentration seriously endangers the safe and stable operation of the entire denitrification system, and also affects the economic and environmental benefits of the enterprise

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