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Power plant flue ash removal device

A technology for flue dust cleaning and power plants, which is applied in the direction of solid residue removal, combustion product treatment, combustion methods, etc., and can solve problems such as poor overall effect, large emissions, and affecting the normal operation of denitrification devices

Pending Publication Date: 2021-07-30
JIAXING NEW JIES THERMAL POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the long working hours of the power plant (all work continuously for 24 hours) and large emissions, the end of the flue is usually equipped with an SCR denitrification device. The solid particles contained in the smoke will wear the catalyst in the denitrification device and affect the performance of the denitrification device. Normal operation, resulting in a decrease in denitrification efficiency and poor overall effect

Method used

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  • Power plant flue ash removal device
  • Power plant flue ash removal device
  • Power plant flue ash removal device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] see Figures 1 to 4 As shown, a power plant flue dust removal device involved in this embodiment includes a flue 10 and an ash removal assembly 20, the ash removal assembly 20 is in the shape of a ring, and the flue 10 is provided with a The assembly 20 passes through and rotates in the first adjustment channel 11 and the second adjustment channel 12. The cleaning assembly 20 includes a first ring piece 21 and a second ring piece 22. The first ring Between the ring piece 21 and the second ring piece 22 are provided several filter units 23 arranged along the circumferential direction of the cleaning assembly 20 .

[0025] Further, the filter unit 23 includes a housing 231 filled with a filter element (not shown in the figure), and the housing 231 is provided with a filter port for the filter element to contact with the smoke in the flue 10 232.

[0026] Further, the filter element can be taken out from the casing 231 through the filter port 232 .

[0027] Further, the...

Embodiment 2

[0034] see Figures 1 to 4 As shown, the power plant flue dust cleaning device involved in this embodiment is further set up on the basis of Embodiment 1 so that two adjacent filter units 23 are connected end to end.

[0035] Further, one end of the filter unit 23 has a protrusion 233 , and the other end has a groove 234 matching the protrusion 233 .

[0036] Further, the filter units 23 are distributed between the first annular piece 21 and the second annular piece 22 in an angular array at equal intervals.

[0037] Further, the number of the filtering units 23 is six.

[0038] In this embodiment, by closely arranging the filter units 23 connected end-to-end between the first annular piece 21 and the second annular piece 22, the arrangement number of the filter units 23 is maximized and the space utilization rate is improved; at the same time It is also ensured that the dust-cleaning assembly 20 cut into the flue 10 section is covered with filter units 23 to achieve the bes...

Embodiment 3

[0041] see Figures 1 to 4 As shown, a power plant flue dust cleaning device involved in this embodiment, on the basis of Embodiments 1 and 2, is further set as, the passage openings of the first regulating passage 11 and the second regulating passage 12 Sealing rings 30 are respectively provided.

[0042] In this embodiment, the sealing ring 30 is provided through the channel opening to prevent the smoke and dust from floating out of the gap during the circumferential rotation of the dust cleaning assembly 20 relative to the flue 10, thereby improving the sealing performance.

[0043] The flue dust cleaning device of the power plant involved in the present invention rotates the ring-shaped dust cleaning assembly relative to the flue, so that the filter units located in the flue are switched, cut into the unused filter unit, and cut out the used filter unit. The filter unit can be replaced outside the flue without stopping the operation, and it is safe and reliable to use. B...

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Abstract

The invention discloses a power plant flue ash removal device which comprises a flue and an ash removal assembly, the ash removal assembly is in a circular ring shape, the flue is provided with a first adjusting channel and a second adjusting channel, the first adjusting channel and the second adjusting channel are used for allowing the ash removal assembly to penetrate through and do circumferential rotation in the flue, and the ash removal assembly comprises a first circular ring piece and a second circular ring piece. A plurality of filtering units which are arranged in the circumferential direction of the ash removal assembly are arranged between the first circular ring piece and the second circular ring piece. Each filtering unit comprises a shell, a filter element is filled in the shell, and a filter opening for enabling the filter element to be in contact with smoke dust in the flue is formed in the shell. The filter element is a raised flannelette or a needled felt. The power plant flue ash removal device has the characteristics of ingenious structure and convenience in use, and is complete in overall function and high in practicability.

Description

technical field [0001] The invention relates to a dust cleaning device, more specifically, it relates to a power plant flue dust cleaning device. Background technique [0002] At present, the flue gas after combustion of coal-fired power plants or biomass power plants contains a large amount of ash, and the wear or blockage of ash on heat exchangers or catalysts used for denitrification is directly detrimental to the safe operation and economic benefits of power plants. influences. Due to the long working hours of the power plant (all work continuously for 24 hours) and large emissions, the end of the flue is usually equipped with an SCR denitrification device. The solid particles contained in the smoke will wear the catalyst in the denitrification device and affect the performance of the denitrification device. Normal operation, resulting in a decline in denitrification efficiency, the overall effect is not good. Accordingly, the present invention proposes a power plant f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J3/02F23J15/02B01D46/12B01D46/42
CPCF23J3/02F23J15/025B01D46/12B01D46/4227F23J2217/10
Inventor 李道林龚俊王爱晨李凯蔡迎来王琦阎江涛徐尧
Owner JIAXING NEW JIES THERMAL POWER
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