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Venturi connecting pipe corrosion resisting method

A Venturi tube and epoxy resin technology, applied in pipeline anticorrosion/rust protection, pipes/pipe joints/fittings, pipelines to prevent damage/wear, etc., can solve the problems of system air leakage, etc., to achieve low system resistance and high number of layers Low, good toughness effect

Active Publication Date: 2017-12-08
辛宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for preventing corrosion of the connecting pipe of the Venturi tube.

Method used

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  • Venturi connecting pipe corrosion resisting method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Grind the inner wall of the connecting pipe to Sa2.5 grade, with a roughness of 63μm, and weld a layer on the polished surface

[0035] 304 stainless steel tortoise shell net, the gap between the tortoise shell net and the polished surface is <3mm;

[0036] 2) Spread the heat-resistant castable evenly on the tortoise shell net with a thickness of 3cm, and let it stand for 24 hours as a lining;

[0037] 3) Attach a 2mm thick 254SMO stainless steel coil to the surface of the lining, and at the same time turn the edge of the stainless steel coil outward to cover the end of the connecting pipe;

[0038] The heat-resistant castable is composed of component A and component B, the ratio of component A and component B is 35:1.3, wherein component A is composed of the following materials in parts by weight:

[0039] 30 parts of epoxy resin, 15 parts of active zinc oxide, 20 parts of talcum powder, 25 parts of white carbon black, 7 parts of thinner and 3 parts of graphene fla...

Embodiment 2

[0049] 1) Grind the inner wall of the connecting pipe to Sa2.5 grade, with a roughness of 63μm, and weld a layer on the polished surface

[0050] 304 stainless steel tortoise shell net, the gap between the tortoise shell net and the polished surface is <3mm;

[0051] 2) Spread the heat-resistant castable evenly on the tortoise shell net with a thickness of 3cm, and let it stand for 24 hours as a lining;

[0052] 3) Attach a 2mm thick 254SMO stainless steel coil to the surface of the lining, and at the same time turn the edge of the stainless steel coil outward to cover the end of the connecting pipe;

[0053] The heat-resistant castable is composed of component A and component B, the ratio of component A and component B is 35:1.3, wherein component A is composed of the following materials in parts by weight:

[0054] 30 parts of epoxy resin, 15 parts of active zinc oxide, 20 parts of talcum powder, 25 parts of white carbon black, 7 parts of thinner and 3 parts of graphene fla...

Embodiment 3

[0064] 1) Grind the inner wall of the connecting pipe to Sa2.5 grade, with a roughness of 63μm, and weld a layer on the polished surface

[0065] 304 stainless steel tortoise shell net, the gap between the tortoise shell net and the polished surface is <3mm;

[0066] 2) Spread the heat-resistant castable evenly on the tortoise shell net with a thickness of 3cm, and let it stand for 24 hours as a lining;

[0067] 3) Attach a 2mm thick 254SMO stainless steel coil to the surface of the lining, and at the same time turn the edge of the stainless steel coil outward to cover the end of the connecting pipe;

[0068] The heat-resistant castable is composed of component A and component B, the ratio of component A and component B is 35:1.3, wherein component A is composed of the following materials in parts by weight:

[0069] 30 parts of epoxy resin, 15 parts of active zinc oxide, 20 parts of talcum powder, 25 parts of white carbon black, 7 parts of thinner and 3 parts of graphene fla...

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PUM

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Abstract

The invention relates to a venturi connecting pipe corrosion resisting method. The inner wall of a connecting pipe is polished to reach Sa 2.5 grade and the roughness of 63 microns; a layer of 304 stainless steel hexsteel is welded on the polished surface; temperature resisting refractory is uniformly coated on the hexsteel with a thickness of 3 cm for standing by 24 h as a liner; a 254 SMO stainless steel coiled plate with a thickness of 2 mm is attached on the surface of the liner; and meanwhile, the edge of the stainless steel coiled plate is outwards overturned to cover the end part of a communicating pipe. The method solves the problem of air leakage of a system caused by corrosive damage of the venturi connecting pipe.

Description

technical field [0001] The invention relates to a method for preventing corrosion of a Venturi tube connecting pipe. Background technique [0002] In the sulphur-containing gold concentrate roasting process, because the waste heat cannot be utilized, the method of venturi-filling-electricity is generally used for cooling and dust removal process, and the venturi tube is the position where the flue gas changes from a high temperature of >280°C to a low temperature of <80°C. Alternating heat, the lining of the connecting pipe often cracks, leaks out of the shell and corrodes, and some low-temperature crystals stick to the pipe, resulting in increased system resistance and affecting system production. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for preventing corrosion of the connecting pipe of the Venturi tube. The present invention solves the problem of air leakage in the system caused by the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L58/04F16L58/08F16L57/04F16L57/02C01B32/184C04B35/66
CPCC04B35/66F16L57/02F16L57/04F16L58/04F16L58/08
Inventor 辛宇
Owner 辛宇