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Chimney and steel base body flue joint seam anti-corrosion layer structure and preparation method thereof

A technology of anti-corrosion layer and steel substrate, applied in combustion methods, lighting and heating equipment, combustion product treatment, etc., can solve problems such as poor use effect, high maintenance cost, damage to anti-corrosion layer, etc., and achieve resistance to thermal expansion and contraction. and vibration, good overall performance, good fracture resistance

Pending Publication Date: 2020-12-04
CHENGDU LONGZHIQUAN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scheme is convenient for construction and low in cost, but the use effect is not good. Due to the harsh environment and thermal expansion and contraction, it is easy to cause damage and fall off of the anti-corrosion layer, which also causes the disadvantage of requiring frequent maintenance. layers, making repair costs extremely high

Method used

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  • Chimney and steel base body flue joint seam anti-corrosion layer structure and preparation method thereof
  • Chimney and steel base body flue joint seam anti-corrosion layer structure and preparation method thereof
  • Chimney and steel base body flue joint seam anti-corrosion layer structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A kind of chimney and steel substrate flue junction anticorrosion layer structure, such as Figure 1-2 As shown, the anti-corrosion layer structure is arranged between the steel flue base body 1 and the concrete chimney base body 2 and on the inner side wall. The silica gel filling layer 3 in the seam 14, the top of the silica gel filling layer 3 is attached with a flexible filling layer 4 and a fluorine rubber skin 6 in sequence, the flexible filling layer 4 is attached to the silica gel filling layer 3, and the flexible filling layer 4 is attached to the silicone filling layer 3. One end of the filling layer 4 and the fluororubber skin 6 are both attached to the steel flue base 1 , and the other ends are attached to the concrete chimney base 2 to seal the gap between the steel flue base 1 and the concrete chimney base 2 .

[0047] Elastic silica gel is filled in the joint 14 to form the silica gel filling layer 3. As the anti-corrosion layer structure of the flue matr...

Embodiment 2

[0049] Based on Example 1, a silica gel filling layer 7 is provided between the flexible filling layer 4 and the fluororubber skin 6 near the steel flue base 1 and the concrete chimney base 2, and the silica gel filling layer 7 near the steel flue base 1 Fixing bolts 8 and nuts 9 are arranged on it, and firm screws 10 are arranged on the silica gel filling layer 7 near the concrete chimney base 2 . The design of the silica gel filling layer 7 improves the fixing stability of the flexible filling layer 4 and the fluororubber skin 6, and makes the side of the fluororubber skin 6 and the side of the anti-corrosion material layer 11 on the same horizontal line, which is convenient for subsequent installation of the screw material layer. Avoid leaving gaps to prevent acid intrusion and corrosion.

Embodiment 3

[0051] Based on Example 2, the inner side walls of the steel flue base body 1 and the concrete chimney base body 2 are also provided with an anti-corrosion material layer 10 .

[0052] A screw sealing layer 11 is provided above the fixing bolts 7 and the fixing screws 9 , and one end of the screw sealing layer 11 is attached to the anticorrosion material layer 10 , and the other end is attached to the fluororubber skin 6 . Screw sealing layer 11 is set on the surface of fixing bolt 7 and stabilizing screw 9, avoids the acidic liquid in the flue from causing corrosion to fixing bolt 7 and stabilizing screw 9, guarantees that its life-span is longer.

[0053] An FRP bead 12 is arranged near the fixing bolt 7 and the fixing screw 9 . The fixing bolts 7 and the fixing screws 9 are connected to the steel flue base 1 and the concrete flue base through the FRP bead 12 , and the FRP bead 12 is attached to the upper surface of the flexible filling layer 4 . With the above-mentioned st...

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Abstract

The invention belongs to the technical field of desulfurization and anti-corrosion treatment of thermal power plants, and discloses a chimney and steel base body flue joint seam anti-corrosion layer structure and a preparation method thereof. An anti-corrosion layer structure is arranged between a steel flue base body and a concrete chimney base body and on the side walls of the inner sides of thesteel flue base body and the concrete chimney base body. The anti-corrosion layer structure comprises a silica gel filling layer arranged in a joint seam between the steel flue base body and the concrete chimney base body, a flexible filling layer and a fluororubber skin are sequentially attached to the upper portion of the silica gel filling layer, and the flexible filling layer is attached to the silica gel filling layer. One end of the flexible filling layer and one end of the fluororubber skin are both attached to the steel flue base body, and the other end of the flexible filling layer and the other end of the fluororubber skin are both attached to the concrete chimney base body, so that gaps between the steel flue base body and the concrete chimney base body are sealed. The steel base body flue and concrete flue joint seam anti-corrosion layer structure is simple in structure, convenient and fast to use, good in anti-corrosion effect and capable of overcoming the defect of basebody deformation.

Description

technical field [0001] The invention relates to an anticorrosion layer structure and a preparation method for the junction joint between a chimney and a steel matrix flue, and belongs to the technical field of desulfurization and anticorrosion treatment in thermal power plants. Background technique [0002] A lot of flue gas emitted by thermal power plants contains a lot of SO 2 , where SO 2 Combined with moisture in the air to form acid, accumulatively pollutes the environment in the form of acid rain and affects people's health. As people pay more and more attention to environmental pollution (especially air pollution), more and more people pay more and more attention to the air pollution caused by the large amount of flue gas emitted by thermal power plants. Low temperature wet flue gas, acid liquid containing different components, such as: sulfuric acid, nitric acid, etc., are highly corrosive, and these acid liquids will cause greater corrosion to desulfurization equi...

Claims

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Application Information

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IPC IPC(8): F23J13/02F23J13/04
CPCF23J13/02F23J13/04F23J2213/101F23J2213/302
Inventor 潘忠文谢纯
Owner CHENGDU LONGZHIQUAN SCI & TECH
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