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Telescopic in-furnace denitration device arranged at top of boiler

A telescopic technology on the top of the boiler, which is applied in the direction of gas treatment, membrane technology, and dispersed particle separation, can solve the problems of poor mixing effect and low out-of-stock efficiency, achieve enhanced mixing effect, save consumption, save equipment investment and operating costs Effect

Pending Publication Date: 2021-08-24
上海晟炉环保技术有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: the problem of poor mixing effect and low out-of-stock efficiency in the arrangement of spray guns in the existing furnace denitrification technology

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  • Telescopic in-furnace denitration device arranged at top of boiler
  • Telescopic in-furnace denitration device arranged at top of boiler
  • Telescopic in-furnace denitration device arranged at top of boiler

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Embodiment Construction

[0029] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

[0030] Such as Figure 1 to Figure 3 As shown, the present invention proposes a retractable furnace denitrification device arranged on the top of the boiler. The main body is conveyed by a retractable spray gun 1, a spray gun height control system, a spray gun cooling system, a positive pressure sealing device 2, a reducing agent and compressed air. The distributing device 4 is composed. The retractable spray gun 1 of the present invention comprises an annular spray head 11, a gun barrel 12 and a spray gun beam body 13, and the gun tube 12 extends into the furnace interior through a reserved hole in the furnace roof, so that the retractable spray gun 1 is vertically arranged on the top of the boiler, A single telescopic spray gun 1 sprays and covers a radius of about 2 meters, and multiple telescopic spray guns 1 can be arranged ...

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Abstract

The invention discloses a telescopic in-furnace denitration device arranged at the top of a boiler. The telescopic in-furnace denitration device comprises a telescopic spray gun, a spray gun height control system, a spray gun cooling system, a positive pressure sealing device and a reducing agent and compressed air conveying and distributing device. The height of the gun barrel can be automatically adjusted according to the flue gas temperature, the spraying point is always kept in the optimal reaction temperature interval of the reducing agent, the denitration efficiency in the furnace is improved to 55%-65%, and the denitration reaction efficiency is improved; reducing agents such as ammonia water and urea are saved, and the operation cost is reduced. And in combination with a flue gas recycling process, the waste incineration power plant with the average value of nitrogen oxide emission index per hour being 90 milligrams per standard cubic meter can achieve up-to-standard emission without using an SCR denitration system, so that the equipment investment and the operation cost are greatly saved.

Description

technical field [0001] The invention relates to a retractable in-furnace denitrification device arranged on the top of a boiler, in particular to a retractable in-furnace denitrification device arranged on the top of a waste heat waste heat boiler, belonging to the technical field of high-efficiency in-furnace denitrification. Background technique [0002] In-furnace denitrification technology uses a spray gun to send reducing agents such as ammonia or urea into the furnace to mix with flue gas, and the nitrogen oxides undergo a reduction reaction to generate harmless nitrogen. At present, conventional SNCR spray guns are arranged in two or more layers on the walls around the furnace, and there are two problems in mixing with the flue gas: First, in order to reach the middle area of ​​the furnace, large droplets need to be sprayed, but the mixing effect in the area near the furnace wall is poor. On the contrary, in order to take into account the mixing effect of the furnace ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/79B01D53/56
CPCB01D53/56B01D53/79B01D2251/2062B01D2251/2067B01D2258/0283
Inventor 谢军邓昌梅
Owner 上海晟炉环保技术有限公司
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