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Anti-corrosion process of inner wall of large-diameter tank equipment lined with plastic

A large-diameter, tank-body technology, applied in the field of plastic-lined anti-corrosion technology on the inner wall, can solve the problems of weak tolerance and weak bonding of the inner lining layer, and achieve the effect of smooth surface and uniform texture

Active Publication Date: 2018-03-02
山东卓研新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the inner lining layer of large-diameter tank equipment with strong solution corrosiveness, the bonding is not firm and the tolerance is weak, the invention provides a plastic-lined inner wall anti-corrosion process for large-diameter tank equipment, which solves the problem of solution corrosion The anti-corrosion problem of the lining plastic of the large-diameter tank with strong resistance, has high strength and high corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The plastic-lined anticorrosion process for the inner wall of large-diameter tank equipment according to the present invention comprises the following steps:

[0036] (1) Cut the pre-welded plate of the tank equipment. The length of the pre-welded plate after cutting is not more than 6 meters, and the width is not more than 2 meters. Clean the pre-welded plate to remove the original attached oil, dirt and Attachment, and dry; then the pre-welded sheet is ground, and the edges and burrs of the pre-welded sheet are polished until smooth.

[0037] (2) Weld reinforcement nets on each pre-welded plate, the reinforcement nets are steel mesh, and the wall thickness of the steel mesh is 2mm.

[0038] (3) Carry out derusting cleaning on the pre-welded plates welded with reinforced mesh. The derusting cleaning is to use shot blasting to remove foreign matter on the surface, using compressed air as the power to form a spray beam to spray the material at a speed of 350m / s Spray on...

Embodiment 2

[0044] The plastic-lined anticorrosion process for the inner wall of large-diameter tank equipment according to the present invention comprises the following steps:

[0045] (1) Cut the pre-welded plate of the tank equipment. The length of the pre-welded plate after cutting is not more than 6 meters, and the width is not more than 2 meters. Clean the pre-welded plate to remove the original attached oil, dirt and Attachment, and dry; then the pre-welded sheet is ground, and the edges and burrs of the pre-welded sheet are polished until smooth.

[0046] (2) Weld reinforcement nets on each pre-welded plate, the reinforcement nets are steel mesh, and the wall thickness of the steel mesh is 3mm.

[0047] (3) Carry out rust removal and cleaning on the pre-welded plates welded with reinforced mesh. The rust cleaning is to use shot blasting to remove foreign matter on the surface, and use compressed air as the power to form a jet beam to spray the material at a speed of 450m / s Spray ...

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Abstract

The invention relates to a process for preventing corrosion of a plastic lining and in particular relates to a process for preventing corrosion of a plastic lining on the inner wall of large-diameter tank equipment. The process comprises the following steps: cutting prewelded plates of the tank equipment and pretreating the prewelded plates; welding a reinforcing net on each prewelded plate; cleaning rust on the prewelded plates with welded reinforcing nets; carrying out PO (propylene oxide) lining manufacturing on the prewelded plates and reserving 10-20cm holes which do not undergo lining manufacturing in the surrounding edges of each prewelded plate; rolling the prewelded plates and welding the prewelded plates to form the tank equipment; after welding, carrying out PO lining repair on weld joints reserved between the adjacent prewelded plates. The process has the advantages that the problem of corrosion prevention of the plastic lining of the large-diameter tank (phi is not less than 5000mm) with stronger solution corrosivity is solved; the prepared large-diameter tank has high strength and high corrosion resistance; the diameter and height of the construction tank can be 20-30m, thus filling in the gap in the plastic linings of ultra-large tanks in the industry.

Description

technical field [0001] The invention relates to a plastic-lined anti-corrosion process, in particular to a plastic-lined anti-corrosion process for the inner wall of large-diameter tank equipment. Background technique [0002] The traditional plastic lining process of storage tank equipment adopts the same rotomolding process as that of pipelines, that is, after the equipment is heated, professional anti-corrosion tools and equipment (such as large roller frames, swing machines, etc.) are used for rolling lining, and the anti-corrosion material is integrally formed on the steel body at one time surface. The advantages of this process are obvious, that is, one-time molding, no secondary repairs are required except for the flange, the thickness of the lining can be continuously thickened according to requirements, and because it is always rolling, it avoids the sagging phenomenon of the anti-corrosion material during the vulcanization process. However, the rotomolding process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P13/02B23P15/00B23K37/00B65D90/06B23K101/12
CPCB23K37/00B23P13/02B23P15/00B65D90/06
Inventor 史济贤孙慧敏史浩
Owner 山东卓研新材料有限公司