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An anti-blocking intelligent ammonia injection device suitable for SCR denitrification process and its working method

A denitration and process technology, applied in the field of anti-blocking intelligent ammonia injection devices, can solve the problems of easy ash accumulation, increase injection speed, mutual interference of ammonia flow field, etc., achieve fast injection speed, increase injection speed, and solve easy accumulation. grey effect

Active Publication Date: 2022-06-24
ANHUI RESOURCE SAVING & ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the design of the nozzle structure, the injection speed is increased, the mixing of ammonia gas and flue gas is fully and uniformly improved, and the problem of easy dust accumulation in traditional nozzles is solved.
Through intelligent rotating nozzles, the steering can be adjusted in real time according to the concentration requirements, which solves the defect that the ammonia flow fields emitted by adjacent nozzles interfere with each other due to the excessive arrangement of traditional nozzles, and reduces the risk of manual operation.

Method used

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  • An anti-blocking intelligent ammonia injection device suitable for SCR denitrification process and its working method
  • An anti-blocking intelligent ammonia injection device suitable for SCR denitrification process and its working method
  • An anti-blocking intelligent ammonia injection device suitable for SCR denitrification process and its working method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] like Figure 1-Figure 3 As shown in the figure, an anti-clogging intelligent ammonia injection device suitable for SCR denitration process includes an ammonia supply main pipe, an ammonia separation mother pipe, and an ammonia branch branch pipe. It is characterized in that the ammonia supply main pipe includes an ammonia supply main pipe A and an ammonia supply main pipe. B, the inlet of the ammonia supply main pipe A is connected with the outlet of the ammonia gas and air mixing pipe, and the ammonia supply main pipe A extends through the side wall 7 of the flue to the interior of the flue and is connected with the ammonia supply main pipe B, and the ammonia supply main pipe B runs along the flue gas. The movement direction is set, one end of a plurality of ammonia separation mother pipes 2 is connected with the ammonia supply main pipe B and is perpendicular to the axial direction of the ammonia supply main pipe B, the other end of the ammonia separation mother pipe 2...

Embodiment 2

[0067] An anti-clogging intelligent ammonia injection device suitable for SCR denitration process is similar to Example 1, the difference is that the ammonia separation parent pipe is arranged in two layers in the gap of the multi-layer catalyst layer 8, and the ammonia supply main pipe B axis Connect vertically in the direction.

Embodiment 3

[0069] An anti-clogging intelligent ammonia injection device suitable for SCR denitration process is similar to Embodiment 1, the difference is that the multiple ammonia separation branch pipes 3 connected to the same section of ammonia separation main pipe 2 can also be on different planes.

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Abstract

The invention provides an anti-blocking intelligent ammonia injection device suitable for SCR denitrification process and its working method, comprising an ammonia supply main pipe, an ammonia distribution main pipe, an ammonia distribution branch pipe, a universal spherical nozzle and an intelligent control mechanism. Through the device of the invention, the reducing agent can form multi-level ammonia injection in the flue, which fully ensures the uniform mixing of the flue gas and the reducing agent. Through the design of the nozzle structure, the injection speed is increased, the mixing of ammonia gas and flue gas is fully and uniformly improved, and the problem of easy dust accumulation in traditional nozzles is solved. The intelligent rotating nozzle can adjust the steering direction in real time according to the concentration requirement, which solves the defect that the ammonia flow field emitted by adjacent nozzles interferes with each other due to the excessive arrangement of traditional nozzles, and reduces the risk of manual operation.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to an anti-clogging intelligent ammonia injection device suitable for an SCR denitration process and a working method thereof. Background technique [0002] With the promulgation of a series of national policies and regulations, the transformation of ultra-low emission of flue gas in various industries has become a trend. The ultra-low emission of flue gas requires NOx emission concentration to be lower than 50mg / m 3 , SCR denitration process is widely used due to its mature technology and high denitration efficiency. The existing SCR ammonia injection system is usually shot from the ammonia water storage tank, gasified by the evaporator, and then mixed with the flue gas through the injection grille arranged on the SCR inlet flue, and then enters the SCR denitration reactor for denitration reaction. The injection and mixing of the reductant in the SCR denitration process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/56
CPCB01D53/8631B01D53/8696B01D2258/0283
Inventor 费明明黄海林陈林倩戴列文黄兰方纯蒋霞崔雷阙凤翔
Owner ANHUI RESOURCE SAVING & ENVIRONMENTAL TECH CO LTD
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