Construction method for anticorrosive trench of fluoride-containing wastewater

A construction method and ditch technology, applied to waterway systems, water supply devices, drainage structures, etc., can solve problems such as ditch damage, and achieve the effects of ensuring safety, reducing leakage, and enhancing corrosion resistance

Inactive Publication Date: 2012-05-09
贵州瓮福蓝天氟化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The construction of this structure has obvious corrosion phenomenon on the fluorine-containing acid waste water, which is easy to cause damage to the trench

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A construction method of fluorine-containing waste water anticorrosion trench, comprising the following steps:

[0021] (1) Construction is carried out at a temperature of 15°C. During construction, the slope of the ditch bottom is 4%, and the edge of the ditch is slightly lower than the ground (so that the ground and the ditch do not collect liquid). Grinding the bottom of the ditch with a grinder or hand-made steel wool is used as the base layer. When there are potholes in the base course, the potholes should be cleaned and filled with acid mud pouring concrete or resin mortar;

[0022] (2) Clean the base layer once with cleaning agent and dry it with compressed air;

[0023] (3) Then paint the epoxy resin primer at least twice to be cured, whichever is not sticky to the touch;

[0024] (4) Lining with three layers of glass cloth after curing;

[0025] (5) Then line two layers of polyester felt on the glass silk cloth;

[0026] (6) Paint the MFE-2 resin topcoat on ...

Embodiment 2

[0030] A construction method of fluorine-containing waste water anticorrosion trench, comprising the following steps:

[0031] (1) Construction is carried out at a temperature of 25°C. During construction, the slope of the ditch bottom is 3%, and the edge of the ditch is slightly lower than the ground (so that the ground and the ditch do not accumulate liquid). Grinding the bottom of the ditch with a grinder or hand-made steel wool is used as the base layer. When there are potholes in the base course, the potholes should be cleaned and filled with acid mud pouring concrete or resin mortar;

[0032] (2) Clean the base layer twice with cleaning agent and dry it with compressed air;

[0033] (3) Then paint the epoxy resin primer at least twice to be cured, whichever is not sticky to the touch;

[0034] (4) Lining with three layers of glass cloth after curing;

[0035] (5) Then line four layers of polyester felt on the glass silk cloth;

[0036] (6) Paint the MFE-2 resin topcoa...

Embodiment 3

[0040] A construction method of fluorine-containing waste water anticorrosion trench, comprising the following steps:

[0041] (1) Construction is carried out at a temperature of 30°C. During construction, the slope of the ditch bottom is 3%, and the edge of the ditch is slightly lower than the ground (so that the ground and the ditch do not collect liquid). Grinding the bottom of the ditch with a grinder or hand-made steel wool is used as the base layer. When there are potholes in the base course, the potholes should be cleaned and filled with acid mud pouring concrete or resin mortar;

[0042] (2) Clean the base layer 3 times with cleaning agent and dry it with compressed air;

[0043] (3) Then paint the epoxy resin primer at least twice to be cured, whichever is not sticky to the touch;

[0044] (4) lined with four layers of glass cloth after curing;

[0045] (5) Then line six layers of polyester felt on the glass silk cloth;

[0046] (6) Paint the MFE-2 resin topcoat on...

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PUM

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Abstract

The invention discloses a construction method for an anticorrosive trench of fluoride-containing wastewater, comprising the following steps of: constructing a trench at a temperature of 15-30 DEG C, keeping the gradient at the bottom of the trench at 3-4% and keeping the edge of the trench slightly lower than the ground while constructing, and polishing the bottom of the trench as a basic layer; cleaning the basic layer 1-3 times by a cleaning agent and drying the basic layer by blowing; coating an epoxy resin primer at least twice for being cured later; lining at least three layers of glass wool cloth after curing; lining at least two layers of polyester felts on the glass wool cloth; coating resin finishes on the surfaces of the polyester felts for being cured later; constructing carbon bricks by phenolic mastic after curing; and naturally maintaining for 48-72 hours to obtain the product. The method disclosed by the invention is simple and easy in construction, strong in corrosion resistance, and long in service life.

Description

technical field [0001] The invention belongs to the technical field of anticorrosion treatment, and in particular relates to a construction method of a trench. [0002] Background technique [0003] In fluorine chemical enterprises, the trenches of the production equipment are mostly constructed with pure FRP or FRP plus acid-resistant magnetic plates. After they are put into use, they will be repeatedly eroded by fluorine-containing acidic wastewater, and leakage of fluorine-containing acidic wastewater occurs due to damage to the trenches. Going underground poses a threat to the foundation of the production device, damages the foundation, and causes environmental pollution at the same time. In the prior art, on pages 27-30 of "Comprehensive Corrosion Control", Volume 21, No. 3, June 2007, it is announced that trenches and pits are protected against corrosion by using resin cement to line acid-resistant bricks, and the structure is: primer ( Epoxy resin primer) 1~2 coats ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): E03F5/00E02D31/00
Inventor何勇岗盛国臣龚孝祥宋志伟
Owner贵州瓮福蓝天氟化工股份有限公司