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A retractable injection device for scr denitrification system

A spraying device and telescopic technology, which is applied in the directions of spraying device, separation method, dispersed particle separation, etc., can solve the problems of low denitration rate and insufficient coverage of flue gas, increase the spraying area, improve the denitration efficiency, and improve the The effect of blowing coverage

Active Publication Date: 2020-08-21
HARBIN BOSHEN TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the coverage rate of the catalyst sprayed by the existing injection device in the flue is less than 85%, resulting in a low overall denitrification rate of the flue gas in the flue, a telescopic injection device for the SCR denitrification system is proposed

Method used

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  • A retractable injection device for scr denitrification system
  • A retractable injection device for scr denitrification system

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Experimental program
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Effect test

specific Embodiment approach 1

[0008] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment. A telescopic blowing device for an SCR denitrification system described in this embodiment includes an electro-hydraulic cylinder 1, a bracket 2, a blowing main pipe 3 and a nozzle assembly. The inner wall of the flue 4 is provided with a through hole 1- 1. The electric hydraulic cylinder 1 is installed on the outside of the through hole 4-1 through the bracket 2, the piston rod 1-1 of the electric hydraulic cylinder 1 is connected to the injection main pipe 3, and the outlet of the injection main pipe 3 is connected to the nozzle assembly. The spray head assembly can enter the flue 4 through the through hole 4-1, and the inlet of the injection main pipe 3 is connected with the high-efficiency slow-release adsorbent container.

specific Embodiment approach 2

[0009] Specific implementation mode two: combination figure 1 and figure 2 Describe this embodiment, the nozzle assembly of a retractable blowing device for SCR denitrification system described in this embodiment includes a housing 5, a ring rack 6, a driving gear 7, a motor 8 and a plurality of balls 9, the inner wall of the housing 5 There is an annular card platform 5-1, and the outlet of the blowing main pipe 3 is provided with an outer edge 3-1 extending outward, and the outer edge 3-1 is arranged in the shell 5, and the outer edge 3-1 is connected to the annular card platform 5. A plurality of balls 9 are evenly distributed between -1, the ring rack 9 is arranged in the end of the shell 5, the motor 8 is connected with the outer wall of the blowing main pipe 3, the driving gear 7 is set on the motor 8, and the driving gear 7 and the ring gear The bars 6 are engaged, and the side wall and the front end of the shell 5 are provided with a plurality of spray holes 5-2. Th...

specific Embodiment approach 3

[0010] Specific implementation mode three: combination figure 1 and figure 2 To illustrate this embodiment, the housing 5 of a retractable blowing device for an SCR denitrification system described in this embodiment is cylindrical, and the front end of the housing 5 is a convex spherical surface 5-3. The spherical surface 5-3 reduces the contact area between the casing 5 and the surface of the dodge door 10, reduces friction, prolongs the service life of the casing 5, and simultaneously facilitates the opening of the dodge door 10 when the casing 5 enters the flue 4. Other components and connections are the same as those in the second embodiment.

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Abstract

The invention relates to a blowing device for a multi-SCR denitration system, in particular to a telescopic blowing device for an SCR denitration system, and solves the problems that the coverage rate of blow catalyst in flues is less than 85% in existing blowing devices and accordingly the overall denitration efficiency of flue gas in flues is low. The telescopic blowing device consists of an electric hydraulic cylinder, a bracket, a blowing main pipe and a nozzle component, the flue inner wall is equipped with a through-hole, the electric hydraulic cylinder is mounted outside the through-hole through the bracket, a piston rod of the electric hydraulic cylinder is in connection with the blowing main pipe, the outlet of the blowing main pipe is connected to the nozzle component, the nozzle component can pass through the through-hole and enter the flue, and the inlet of the blowing main pipe is connected to an efficient sustained-release adsorbent container. The invention belongs to the flue gas treatment field.

Description

technical field [0001] The invention relates to an injection device for a multi-SCR denitrification system, in particular to a telescopic injection device for an SCR denitration system, belonging to the field of flue gas treatment. Background technique [0002] The country is extensively carrying out peak regulation of thermal power generation units. It is necessary to ensure that the NOX emission of the unit is still up to the standard under the condition of 30% load. The safe operation of the denitrification system is yet to be determined. In order to remove nitrogen oxides in the combustion flue gas and prevent environmental pollution, it is necessary to carry out denitrification treatment on the combustion flue gas. At present, the denitrification technology commonly used in industry is the selective catalytic reduction technology SCR, which uses the reduction function of ammonia to NOx, and under the action of the catalyst, NOx is mainly reduced to N, which has little ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/90B01D53/56B05B13/02
CPCB01D53/8631B01D53/90B01D2251/2062B01D2258/0283B05B13/0278
Inventor 牛海峰单玉华戴维葆阎新民郭芳芳
Owner HARBIN BOSHEN TECH DEV CO LTD