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Flow guide plate for flue

The technology of a deflector and a deflector is applied in the field of flue gas treatment, which can solve the problems affecting the performance and service life of the SCR catalyst, the blockage of the SCR catalyst bed, and the wear of the catalyst, so as to achieve a good uniform distribution effect of flue gas and reduce Resistance, the effect of reducing smoke resistance

Inactive Publication Date: 2020-11-13
河北大唐国际王滩发电有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fly ash in the flue gas produced by boiler coal combustion, the fly ash will cause blockage, wear and catalyst poisoning of the SCR catalyst bed. The performance and service life of the SCR catalyst are affected in the subsequent flue gas treatment process

Method used

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  • Flow guide plate for flue
  • Flow guide plate for flue
  • Flow guide plate for flue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: See figure 1 , the present invention provides a technical solution: a flue deflector, including an air intake flue 1, an ash collecting hopper 2, a guide flue 3 and an air outlet flue 6, the air intake flue 1 is vertically arranged And its inner side has a hollow cavity, the top side of the air intake flue 1 is provided with a flue gas inlet, and the bottom side of the air intake flue 1 is equipped with a conical ash collecting hopper 2 communicating with its inner cavity; the guide flue 3 Placed on the side of the intake flue 1 and perpendicular to the horizontal direction of the intake flue 1, the inner end of the diversion flue 3 adjacent to the intake flue 1 is provided with a diversion baffle 4 and a dust blocking plate 5; The gas outlet flue 6 is in a herringbone shape, the top of the gas outlet flue 6 is bent and forms a limit step 61, the gas outlet flue 6 includes a main channel 62, a first channel 63 and a second channel 64; the main channel 62 and ...

Embodiment 2

[0031] Example 2: see Figure 2-3 , in this embodiment, the deflector baffle 4 is flexibly connected to the support plate 7 through a rotating shaft, the support plate 7 is provided with a chute 71, and the outer end of the support plate 7 is provided with a driving assembly for driving the deflector baffle 4 to turn over; The driving assembly includes a motor 8 , a tooth plate 9 and a push rod 10 , the motor 8 is fixed on the inner wall of the guide flue 3 through a support, and the output end of the motor 8 is connected with a gear 81 . The deflector baffle 4 is connected to the end of the support plate 7 by a spring, and a slider is slidably connected to the chute 71 on the support plate 7. The slider is connected to the end of the tooth plate 9, and the slider drives the tooth plate 9 along the length of the chute 71. direction; the end of the tooth plate 9 away from the chute 71 is distributed with a tooth block, and the tooth block meshes with the gear 81 .

[0032] In ...

Embodiment 3

[0034] Example 3: See Figure 4 , in this embodiment, the dust-blocking plate 5 is movably connected to the inside end of the diversion flue 3 and the intake flue 1 through a rotating shaft, and the side end of the dust-blocking plate 5 close to the dust-collecting hopper 2 is connected to the dust-collecting side by a spring. Bucket 2 side walls. The diversion baffle 4 can be flipped relative to the support plate 7 when the push rod 10 drives the pulley 11 against its end, and the diversion angle can be changed. , and the end of the connecting rod 12 is connected with a percussion hammer 13, and the percussion hammer 13 can knock the dust-blocking plate 5 when the diversion baffle plate 4 is turned over relative to the support plate 7.

[0035] In this embodiment, since the dust-blocking plate 5 is movably connected to the inner side of the diversion flue 3 and the intake flue 1 through the rotating shaft, and is connected to the side wall of the dust-collecting bucket 2 thr...

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PUM

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Abstract

The invention belongs to the field of flue gas treatment, and particularly discloses a flow guide plate for a flue. The flow guide plate comprises a gas inlet flue, an ash collecting hopper, a flow guide flue and a gas outlet flue, wherein the gas inlet flue is vertically arranged, a hollow cavity is formed in the inner side of the gas inlet flue, a flue gas inlet is formed in the top side of thegas inlet flue, and the conical ash collecting hopper communicating with the inner cavity of the gas inlet flue is arranged on the bottom side of the gas inlet flue; the flow guide flue is arranged onone side of the gas inlet flue and is perpendicular to the horizontal direction of the gas inlet flue, and a flow guide baffle and a dust blocking plate are arranged at the inner side end, adjacent to the gas inlet flue, of the flow guide flue; and the gas outlet flue is herringbone, the top of the gas outlet flue is bent to form a limiting step, and the gas outlet flue comprises a main channel,a first channel and a second channel. Flue gas entering from the gas inlet flue can be guided by the flow guide baffle, so the flue gas can enter the ash hopper for collecting; and fly ash particles in the flue gas can be effectively intercepted by the dust blocking plate, so abrasion and erosion of a treatment device caused by the flue gas containing the fly ash particles are avoided, and meanwhile, flue gas resistance can be reduced.

Description

technical field [0001] The invention relates to the field of flue gas treatment, in particular to a flue deflector. Background technique [0002] With the increasing environmental requirements and standards, the treatment of boiler flue gas is an indispensable step in power plants, iron works and other enterprises that use coal-fired boilers. In boiler flue gas treatment, indicators such as denitrification, desulfurization, and dust removal must meet the national emission standards. In order to consider the uniformity of the flue gas flow field, in the inlet flue with a short length and a large pitch angle, it is necessary to arrange a flue gas deflector to ensure that the flue gas in the flue has a good degree of fullness and a small impact on the heat. The impact of thermal deviation on the surface, thereby improving the heat transfer efficiency. [0003] For example, the existing flue deflector has the application number CN201811068933.9, and the patent name is an inven...

Claims

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Application Information

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IPC IPC(8): B01D45/08F23J13/00
CPCB01D45/08F23J13/00
Inventor 聂鹏飞马杰王洋张嘉伟王敬苗
Owner 河北大唐国际王滩发电有限责任公司