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Sampling method of glass fiber reinforced plastic anode of wet electrostatic precipitator in service

A wet electrostatic and FRP technology, applied in the direction of sampling devices, etc., can solve the problems of high hardness of FRP materials, narrow site space, difficult construction, etc., and achieve the effect of high repair strength, good stability, and convenient sampling and detection

Active Publication Date: 2020-06-19
GUODIAN ENVIRONMENTAL PROTECTION RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The sampling location is on the top surface or the ground of the anode module, the site space is narrow and the construction is difficult;
[0006] 2. The hardness of FRP material is high, which requires professional cutting equipment and reasonable cutting process;
[0007] 3. The upper temperature limit of the FRP material of the wet electrostatic precipitator is about 80°C, and it is very easy to ignite, so only hand-held cutting equipment should be used for construction;

Method used

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  • Sampling method of glass fiber reinforced plastic anode of wet electrostatic precipitator in service
  • Sampling method of glass fiber reinforced plastic anode of wet electrostatic precipitator in service
  • Sampling method of glass fiber reinforced plastic anode of wet electrostatic precipitator in service

Examples

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Effect test

Embodiment 1

[0038] as attached figure 1 Shown, the sampling method of the FRP anode of wet electrostatic precipitator in service of the present invention, the method may further comprise the steps:

[0039] Step 1. Preparation of the repair board:

[0040] The anode thickness of the glass fiber reinforced plastic anode module of the wet electrostatic precipitator in service is 6mm, and a 12mm thick conductive glass steel plate is used. A 200×350mm flat plate is cut out by a CNC engraving machine, and then a three-sided guide groove is milled out by a desktop milling machine. The obtained repair plate is ready for use. , the repair plate structure is as image 3 , Figure 4 shown.

[0041] The width of the guide groove is 6.4mm to meet the assembly requirements of the anode surface after insertion of 6mm, and the thickness of the single side of the guide groove is about 2.8mm, which is to meet the strength requirements during assembly. The width of the repair plate is 200mm, which can ...

Embodiment 2

[0052]The thickness of the in-service FRP anode module is generally 6mm, and the thickness of the conductive FRP is selected as 10mm in this example. The depth of the guide groove is 25mm, the width of the guide groove is 6.4mm, and the wall thickness of one side of the guide groove is 1.8mm. All the other are the same as embodiment one.

[0053] Application implementation one:

[0054] The wet electrostatic precipitator of a 600MW unit in East China ushered in the first overhaul after four years of operation. During the inspection, it was found that many plates were delaminated and peeled off. The user needs to find out the strength retention rate of the material during the overhaul period to evaluate whether to continue to serve for one overhaul period.

[0055] The user entrusts a third-party testing unit to select four typical anode cylinders and cut them on the upper surface of the anode according to the sampling method of the present invention according to the requirem...

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Abstract

The invention provides a feasible and easy-to-operate sampling method for an in-service wet-type electrostatic precipitator. A sampling method for a glass fiber reinforced plastic anode of the in-service wet-type electrostatic precipitator comprises the steps of preparation of a repair plate, cutting of the glass fiber reinforced plastic anode, treatment of a sampling opening, assembly of the sampling opening and the repair plate and the assembly quality standard. The sampling method is advanced in technology, scientific and reasonable, and fills in the blank of sampling of a glass fiber reinforced plastic anode module of the wet-type electrostatic precipitator.

Description

technical field [0001] The invention relates to a wet electrostatic precipitator technology for ultra-clean discharge of flue gas in a thermal power plant, in particular to a sampling method for in-service glass fiber reinforced plastic anodes. Background technique [0002] At present, the smoke and dust emission of active coal-fired generating units requires the implementation of gas turbine emission limits. Wet electrostatic precipitators are widely used in coal-fired units because of their outstanding advantages in the deep purification of wet flue gas. Conductive FRP is an ideal material for the anode of wet electrostatic precipitator due to its strong acid mist corrosion resistance, good electrical conductivity, and good matching of flue gas medium. However, FRP is a polymer composite material, and there is a problem of degradation of mechanical properties due to aging. The power plant needs to sample and evaluate the retention rate of mechanical properties and the exte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C73/26B29C73/06G01N1/04
CPCB29C73/06B29C73/26B29C2073/262G01N1/04
Inventor 陆小成申智勇刘迅李志强
Owner GUODIAN ENVIRONMENTAL PROTECTION RES INST CO LTD
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