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Corrosion-resistant treatment method of corbel part of brick lining chimney

A technology of anti-corrosion treatment and inner lining, which is applied in the field of anti-corrosion treatment of brick-lined chimneys, and can solve problems such as anti-corrosion failure, chimney anti-corrosion failure, and anti-corrosion layer that cannot relieve stress, etc.

Inactive Publication Date: 2011-08-17
重庆大众防腐股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, due to the stress effect caused by vertical expansion and contraction in this part, the usual anti-corrosion materials for chimneys only consider the temperature resistance requirements, and do not have high requirements for acid resistance and elasticity. Anti-corrosion failure, condensate leaked into the insulation layer along the corbel expansion joints, resulting in anti-corrosion failure of the entire chimney
Leakage at the corbel is also a common problem of chimney corrosion at home and abroad

Method used

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  • Corrosion-resistant treatment method of corbel part of brick lining chimney
  • Corrosion-resistant treatment method of corbel part of brick lining chimney
  • Corrosion-resistant treatment method of corbel part of brick lining chimney

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The anticorrosion treatment of embodiment 1, class A corbel, as image 3 Shown:

[0038] (1) Rinse the corbels with water, and manually remove the mortar and acid-resistant mortar in the A7 area of ​​the corbel joint, and remove the impurities in the corbel joint A7;

[0039] ⑵Put the prepared thermal insulation sliver A3 into the transfer joint A7, and reserve a depth of about 100mm in the transfer joint A7;

[0040] (3) Pour polyurethane sealing paste into the joint A7, and the pouring depth of polyurethane sealing paste is 50mm;

[0041] (4) On the surface of the polyurethane sealing paste, pour silicone rubber high-temperature elastic bonding sealing material A9 to a depth of about 50mm;

[0042] (5) On the brick matrix inside the joint A7, use the mixture A10 of VP3-2 and silicone rubber high-temperature elastic bonding and sealing materials to build the first piece of vitrified ceramic brick A8;

[0043] ⑹Finally, use silicone rubber high-temperature elastic ...

Embodiment 2

[0045] The anticorrosion treatment of embodiment 2, B class beef leg, as Figure 5 Shown:

[0046] ⑴Rinse the corbels with water, and manually remove the mortar and acid-resistant mortar in the B1 area of ​​the joint; remove impurities in the joint;

[0047] ⑵Put the prepared thermal insulation sliver B2 into the joint B1, and reserve a depth of about 100mm in the joint B1;

[0048] (3) Pour polyurethane sealing paste into the joint B1, and the pouring depth of polyurethane sealing paste is 50mm;

[0049] (4) On the surface of the polyurethane sealing paste, pour silicone rubber high-temperature elastic bonding sealing material to a depth of about 50mm;

[0050] (5) In the joint B1, the first vitrified ceramic brick B6 is built with the mixture B7 of VP3-2 and silicone rubber high-temperature elastic bonding and sealing material;

[0051] ⑹Finally, the remaining vitrified ceramic bricks are filled with silicone rubber-based high-temperature elastic bonding and sealing mat...

Embodiment 3

[0055] Embodiment 3, the anticorrosion treatment of class C corbel (ring beam), such as Figure 7 Shown:

[0056] (1) Rinse the corbel with water, and manually remove the three bricks along the lower edge of the ring beam to remove impurities in the joint C4;

[0057] (2) Insert the prepared thermal insulation sliver into the joint C4, and reserve a depth of about 100mm in the joint C4;

[0058] (3) Pour polyurethane sealing paste C7 into the seam, and the pouring depth of polyurethane sealing paste is 50mm;

[0059] (4) On the surface of polyurethane sealing paste C7, pour silicone rubber high-temperature elastic bonding sealing material to a depth of about 50mm;

[0060] (5) On the top of the joint C4 filled with sealing material and the inner liner at the edge of the joint, use the mixture C6 of VP3-2 and silicone rubber high-temperature elastic bonding sealing material to build the first vitrified ceramic brick C8;

[0061] ⑹ Finally, use silicone rubber high-tempera...

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Abstract

The invention provides a corrosion-resistant treatment method of a corbel part of a brick lining chimney. The method comprises the following steps of: firstly cleaning a substrate; then digging a corbel joint seam, wherein the depth of the seam is larger than or equal to 100mm; pouring the seam by using polyurethane sealing cream and silicon rubber type high-temperature elastic adhesive sealing material; then coating polyfluorine organic lining corrosion-resistant material at the upper and lower sides of the seam, and building vitrified ceramic tiles for protection; if a drainboard exists, performing sloping processing on the drainboard; and maintaining according to the maintaining conditions of the material. The method employs the elastic materials to perform corrosion-resistant processing on the chimney corbel at the retractable seam part of the corbel, so as to excellently and simultaneously solve the problems of sealing performance and thermal swelling. According to the method of the invention, the thermal stress generated through smoke temperature waving is excellently eliminated; the corrosion-resistant layer is prevented from being corroded, and the leakage of condensate can be avoided.

Description

technical field [0001] The invention relates to an anticorrosion treatment technology for brick-lined chimneys used in industries such as thermal power plants, chemical industry and metallurgy. Background technique [0002] For brick-lined chimneys used in thermal power plants, chemical and metallurgical industries, anti-corrosion treatment is an important project. In the internal structure of the chimney, some special parts need special anti-corrosion treatment. Chimney corbel The corbel part is a special part of the chimney, which is evenly distributed at different heights of the chimney according to the design requirements, and the number is related to the height and structural form of the chimney. Chimney corbels usually have the following two functions: [0003] A. Load-bearing connection, where the corbel is not directly connected to the outer wall of the chimney, but is connected to the outer concrete wall through a connecting rod, which transfers the gravity of the...

Claims

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Application Information

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IPC IPC(8): E04H12/28
Inventor 杨祖洪唐健高荣谢彦飞张昊
Owner 重庆大众防腐股份有限公司
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