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Counter-current ammonia spraying mixer

A mixing device and countercurrent technology, which is applied in the field of SCR flue gas denitrification, can solve problems such as nozzle clogging and affecting the process flow, and achieve the effects of low cost, good mixing effect, and shortened flue length

Inactive Publication Date: 2016-03-09
浙江百能科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the dust in the flue gas is easy to block the nozzle and affect the whole process

Method used

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  • Counter-current ammonia spraying mixer
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Embodiment Construction

[0019] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] refer to Figure 1-3 As shown, a countercurrent ammonia injection mixing device includes a flue 1, a denitration reactor 2 connected to the flue 1, and a rectification device 4. The rectification device 4 is arranged at the junction of the flue 1 and the denitration reactor 2. The direction of the arrow in the figure is the flue gas flow...

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Abstract

The invention discloses a counter-current ammonia spraying mixer. The counter-current ammonia spraying mixer comprises a flue and a denitration reactor connected to the flue. An ammonia spraying grid with an ammonia spraying direction opposite to a flue gas flowing direction is arranged in the flue. The ammonia spraying grid is provided with a mixing part for blocking flue dust. The counter-current ammonia spraying mixer has a simple structure and a low manufacturing cost, shortens flue length, realizes counter current contact between ammonia and flue gas and improves mixing effects of ammonia and flue gas. The mixing part effectively blocks dust in flue gas and prevents nozzle obstruction.

Description

technical field [0001] The invention belongs to the field of SCR flue gas denitrification, and in particular relates to a countercurrent ammonia injection mixing device. Background technique [0002] At present, the nozzle direction of the ammonia injection grid in the conventional selective catalytic reduction denitrification device is set upwards, so that the ammonia gas sprayed from the ammonia injection grid and the flue gas flow in the same direction, and then fully mixed after passing through the flue gas mixer The main purpose of this setting method is to prevent the fly ash carried by the flue gas from entering the nozzle, causing the nozzle to be blocked, but this method not only makes the flue gas and ammonia gas mixed insufficiently, but also affects the uniform distribution of the ammonia gas in the flow field in the flue This will lead to the escape of ammonia in some areas of the denitrification outlet or the high concentration of nitrogen oxides at the outlet,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/90B01D53/56
CPCB01D53/90B01D53/8625B01D2251/2062B01D2258/0283
Inventor 周俊虎刘茂省杨雪峰李卫忠毛霞君孙琦明
Owner 浙江百能科技有限公司