Novel soot-formation-preventing SCR denitration device

An anti-dusting, SCR reactor technology, applied in the direction of gas treatment, membrane technology, dispersed particle separation, etc., can solve the problems of rectifying grid fouling, easy wear and damage of catalyst, etc., achieve uniform distribution of flue gas, avoid The effect of flue gas deviation, reduction of reducing agent consumption and catalyst damage

Pending Publication Date: 2018-06-12
贵州西能电力建设有限公司 +1
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a new type of anti-accumulation SCR denitrification device, which is used to solve the problem that the rectification grid of the traditional SCR denitrification device is prone to ash accumulation and blockage, and the catalyst is easy to wear and damage.

Method used

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  • Novel soot-formation-preventing SCR denitration device

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Embodiment Construction

[0018] A new type of anti-accumulation SCR denitrification reaction device, including an SCR reactor body 1, an inlet mouth 2, a horizontal flue 3 and a diversion flue 4, the inlet mouth 2 is slope-shaped, and the lower end of the inlet mouth 2 is set on the SCR The reactor body 1 is above the inlet and communicates with the SCR reactor body 1 , the upper end of the inlet mouth 2 communicates with the horizontal flue 3 , and the horizontal flue 3 communicates with the turning flue 4 .

[0019] It also includes five rectifying grids 5, the five rectifying grids 5 are arranged at the entrance of the SCR reactor body 1 along the width direction of the SCR reactor body 1, and the rectifying grids 5 are away from the grid at one quarter of the flame boiler end. The grids are arranged alternately along the width direction of the SCR reactor body 1 according to the hole spacing of 100×100mm and 200×200mm. The method is arranged alternately along the width direction of the SCR reactor...

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Abstract

The invention discloses a novel soot-formation-preventing SCR denitration device. The novel soot-formation-preventing SCR denitration device comprises an SCR reactor body, an inlet cover, a horizontalflue, a turning flue, a plurality of flow straightening grids, sound wave soot blowers and turbulent-flow air pipes. The novel soot-formation-preventing SCR denitration device has the advantages thatthe hole distances of grid cells, away from the 1/4 of a firing boiler end, of the flow straightening grids are alternately arranged according to the manner of 100*100mm and 200*200mm, the hole distances of grid cells, from the central line to the 1/4 of a direction away from the firing boiler end are alternately arranged according to the manner of 100*100mm and 200*200mm, the pore diameter distance of parts easy in soot formation is increased, and soot formation is avoided; the sound wave soot blowers are arranged above the inlet cover of the SCR reactor and directly face the parts easy in soot formation of the grids, and soot formation, blocking grid holes, of the flow straightening grids during operation can be prevented; the turbulent-flow air pipes are arranged on a horizontal flue guide plate and the upper portion of a turning flue guide plate, steam blowing is started regularly to generate turbulent flow to allow flue gas entering the SCR reactor to be evenly distributed, and catalyst damage degree is lowered.

Description

technical field [0001] The invention relates to the technical field of power plant denitrification operation, in particular to a novel anti-dust accumulation SCR denitrification device. Background technique [0002] Selective catalytic reduction technology SCR process denitrification device, the flue gas rectification grille above the reactor is prone to clogging with ash accumulation during operation. In severe cases, ash accumulation accounts for more than 40% of the entire inlet cross section, and the ash accumulation height reaches More than 1 meter to the top of the inlet mouth, the ash accumulation not only seriously affects the denitrification efficiency and causes high consumption of reducing agent, but also causes a large amount of flue gas deviation to cause aggravated wear and even damage of the catalyst. In the catalyst layer of the reactor, most of the flue gas enters the reactor through the unblocked position, causing the catalyst to wear and damage intensified...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/90B01D53/56
CPCB01D53/8631B01D53/90B01D2258/0283B01D2251/20
Inventor 张强顾剑陆久全唐克洪张志洪
Owner 贵州西能电力建设有限公司
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