Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Power plant used mortar tube with anticorrosive and wear-resistant lining and coating method thereof

An anti-corrosion and wear-resistant, power plant ash technology, applied in the direction of pipeline anti-corrosion/anti-rust protection, pipeline damage/abrasion prevention, damage protection, etc. Pinholes and other problems, to achieve the effect of good mechanical strength and good corrosion resistance

Inactive Publication Date: 2010-05-26
安志国
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pipes used in this system need to consider their anti-corrosion and wear resistance. At present, the method of lining the steel pipe with rubber is used, and the inner wall of the pipe is sandblasted, washed with solvents, coated with rubber and then vulcanized. The disadvantage is that the rubber lining is combined with the substrate. Not strong, the rubber lining is prone to air bubbles or pinholes, and this layer of rubber lining is prone to aging and cracking, and the service life is short

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The trial situation of the power plant mortar pipe prepared by adopting the high-strength anti-corrosion and wear-resistant powder coating lining and its coating method described in CN8710092X is as follows: the parameters of the gypsum slurry or lime water slurry of the conveying medium are an average density of 1158kg / m 3 , the solid content is 40%, the solid concentration is 50-100g / L, the flow rate is 108m / h (0.03m / s), the temperature is ≤51°C, the pressure is 1.6Mpa, and the pH is 4-5.5.

[0017] Trial in the slurry pipeline of the flue gas desulfurization system of No. 5 unit (210MW) in Zhangze Power Plant, Shanxi. The installation location is the outlet of the gypsum slurry pump. The specification of the test pipeline is ￠159×4.5 ordinary carbon steel pipe straight pipe and 800mm, 90°R=260 bend One piece of pipe, spray the above-mentioned paint (with flange) on the inner surface of the steel pipe, the coating thickness is 0.8mm, open and check after 316 days of op...

Embodiment 2

[0020] Adopt the paint lining described in CN97111379.3 and the coating method to make the coated pipe and use it in series with the lining pipe described in Example 1, the result is the same.

Embodiment 3

[0022] Adopt the coating pipe described in CN00126503.2 paint lining and coating method to make and the lining pipe described in embodiment one to use in series, the result is the same as embodiment one

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Average densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a power plant used mortar tube with an anticorrosive and wear-resistant lining coated on the inner wall. The mortar tube comprises a metal substrate and a lining, wherein the lining is formed by spreading coatings disclosed by CNS710092*.CN97111379, 3 and CN00126503, 2 or by the invention on a substrate and then thermally melting the coatings. The coating method of the lining comprises the following steps: derusting the substrate by sandblast and deoiling with solvent; heating the substrate to 180-260 DEG C; spraying a powdered coating on the substrate; keeping temperature and solidifying at 180-260 DEG C for 1h. The lining has no bubble or pinhole, resists corrosion, abrasion and cavitations and is firm to adhere and simple, convenient and practical to construct.

Description

1. Technical field [0001] The invention relates to a mortar pipe of a power plant whose inner wall is coated with an anti-corrosion and wear-resistant lining and a coating method thereof. 2. Background technology [0002] At present, my country is still dominated by coal-fired thermal power generation, and the sulfur contained in coal is converted into SO in the flue gas after combustion. 2 form exists. SO 2 When discharged into the atmosphere, it must be removed to meet the national standard (1200 ~ 2100mg / m 3 ), otherwise it will cause acid rain. The oldest and most mature flue gas desulfurization method is commonly known as the FGD method (Flue Gas Desulfurigation), that is, the limestone (lime) / gypsum wet method. The pipes used in this system need to consider their anti-corrosion and wear resistance. At present, the method of lining the steel pipe with rubber is used, and the inner wall of the pipe is sandblasted, washed with solvents, coated with rubber and then vul...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F16L58/04F16L57/06
Inventor 张凯军安志国
Owner 安志国
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com