Anti-blocking intelligent ammonia spraying device suitable for SCR denitration process and working method of anti-blocking intelligent ammonia spraying device

An intelligent and technological technology, applied in the chemical industry, can solve the problems of easy dust accumulation, increase the injection speed, and mutual interference of the ammonia flow field, and achieve the effect of fast injection speed, increase the injection speed, and solve the effect of easy dust accumulation

Active Publication Date: 2021-05-11
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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  • Anti-blocking intelligent ammonia spraying device suitable for SCR denitration process and working method of anti-blocking intelligent ammonia spraying device
  • Anti-blocking intelligent ammonia spraying device suitable for SCR denitration process and working method of anti-blocking intelligent ammonia spraying device
  • Anti-blocking intelligent ammonia spraying device suitable for SCR denitration process and working method of anti-blocking intelligent ammonia spraying device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as Figure 1-Figure 3 As shown, an anti-blocking intelligent ammonia injection device suitable for SCR denitrification process includes an ammonia supply main pipe, an ammonia distribution main pipe, and an ammonia distribution 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 to the outlet of the ammonia gas and air mixing pipe. The ammonia supply main pipe A extends through the side wall 7 of the flue to the inside of the flue and then connects with the ammonia supply main pipe B. The ammonia supply main pipe B runs along the flue gas The direction of movement is set. One end of multiple ammonia separation main pipes 2 is connected to ammonia supply main pipe B and is perpendicular to the axial direction of ammonia supply main pipe B. The other end of ammonia separation main pipe 2 is connected to multiple ammonia d...

Embodiment 2

[0067] An anti-blocking intelligent ammonia injection device suitable for SCR denitrification process, similar to Embodiment 1, the difference is that the ammonia separation main pipe 2 is arranged in the gap of the multi-layer catalyst layer 8 in two layers, and is connected to the B-axis of the ammonia supply main pipe connected vertically.

Embodiment 3

[0069] An anti-blocking intelligent ammonia injection device suitable for SCR denitrification process is similar to Embodiment 1, the difference is that multiple ammonia distribution 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 spraying device suitable for an SCR denitration process and a working method of the anti-blocking intelligent ammonia spraying device. The anti-blocking intelligent ammonia spraying device comprises an ammonia supply header pipe, an ammonia separation header pipe, ammonia separation branch pipes, universal spherical nozzles and an intelligent control mechanism. By means of the device, the reducing agent can form multi-level ammonia spraying in the flue, and what is fully guaranteed is that flue gas and the reducing agent are evenly mixed. Through the structural design of the nozzle, the spraying speed is increased, the ammonia gas and the flue gas are fully and uniformly mixed, and meanwhile, the problem that dust is easily accumulated in a traditional nozzle is solved. The rotating direction can be adjusted in real time according to the concentration requirement through the intelligent rotating nozzles, the defect that flow fields of ammonia gas sprayed by adjacent nozzles interfere with each other due to excessive arrangement of traditional nozzles is overcome, and meanwhile the manual operation risk is reduced.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to an anti-blocking intelligent ammonia injection device and a working method thereof suitable for SCR denitrification process. 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. Ultra-low emission of flue gas requires NOx emission concentration to be lower than 50mg / m 3 , SCR denitrification process is widely used due to its mature technology and high denitrification efficiency. The existing SCR ammonia injection system is usually pumped out from the ammonia storage tank, gasified by the evaporator, and then mixed with the flue gas through the injection grid arranged on the SCR inlet flue, and then enters the SCR denitrification reactor for denitrification reaction. The injection and mixing of reducing agent in SCR denitrifica...

Claims

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Application Information

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Patent Type & Authority Applications(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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