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

Anti-waxing coating for oil pipelines

An oil pipeline and anti-waxing technology, used in anti-corrosion coatings, anti-fouling/underwater coatings, polyester coatings, etc., can solve problems such as difficulties in crude oil extraction and transportation, and achieve convenient construction, obvious effects, and simple use processes. Effect

Inactive Publication Date: 2015-03-11
SHANGHAI INST OF TECH
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the above-mentioned technical problems in the prior art, the present invention provides an anti-wax coating for oil pipelines. The anti-wax coating for oil pipelines solves the problem of wax deposition in downholes in the prior art. On the surface of the sucker rod of the device and the inner wall of the oil storage pipeline and the oil storage container, it brings difficult technical problems to the extraction and transportation of crude oil

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

[0029] Put 20Kg of polyurethane into the reaction kettle, add 50Kg of acetone, raise the temperature to 50 degrees, and add 10Kg of epoxy resin, 11Kg of unsaturated polyester, 5Kg of polybutyl acrylate, 0.1Kg of isotridecane in sequence at a speed of 1000 rpm Alcohol, 2Kg molybdenum disulfide and 2Kg lanthanum fluoride were stirred for 5 hours and cooled to room temperature to obtain the primer of about 100Kg anti-wax coating. Then weigh 3Kg of perfluoropolyether derivatives with active groups (the structural formula is NH 2 -(CF 2 O) 20 -NH 2 ), when in use, first apply the primer of the anti-wax coating to the inner surface of the oil pipeline, and then apply the functional perfluoropolyether with active groups to the outermost layer of the inner surface.

Embodiment 2

[0031] Put 20Kg of polyurethane into the reaction kettle, add 50Kg of xylene, heat up to 60 degrees, and at a speed of 1000 rpm, add 10Kg of epoxy resin, 11Kg of unsaturated polyester, 6Kg of polybutylacrylate, 0.1Kg of isodecyl Triol, 4Kg aluminum oxide, stir 5 hours, cool to room temperature, obtain the primer of about 100Kg anti-wax coating. Then weigh 3Kg perfluoropolyether with active groups. During use, first coat the primer of the anti-wax coating on the inner surface of the oil pipeline, and then apply the perfluoropolyether derivatives with active groups (structural formula for NH 2 -(CF 2 O) 15 -COF) applied to the outermost layer on the inner surface.

Embodiment 3

[0033]Take 20Kg of polyurethane and put it into the reaction kettle, add 50Kg of cyclohexane, heat up to 40 degrees, at the speed of 1000 rpm, add 10Kg of epoxy resin, 11Kg of unsaturated polyester, 5Kg of polybutyl acrylate, 0.1Kg of iso Tridecanol, 4Kg silicon dioxide, stirred for 5 hours, cooled to room temperature to obtain the primer of 100Kg anti-wax deposition paint. Then weigh 3Kg of perfluoropolyether with active groups. During use, the primer of the anti-wax coating is applied to the inner surface of the oil pipeline, and then the perfluoropolyether derivatives with active groups (structural formula is FOC-(CF 2 O) 20 -COF) applied to the outermost layer on the inner surface.

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
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to an anti-waxing coating for oil pipelines. The anti-waxing coating is composed of primer and finish paint, wherein the weight ratio of the primer to the finish paint is 100:(2-5); the primer comprises 10-30% of polyurethane, 5-15% of epoxy resin, 5-15% of unsaturated polyester, 1-8% of inorganic fillers, 2-10% of a flatting agent, 0.05-2% of a defoaming agent and the balance of a solvent; the finish paint is a perfluorinated polyether derivative. The invention further provides a preparation method of the anti-waxing coating for oil pipelines. The anti-waxing coating is hydrophobic, oleophobic, corrosion-resistant, low in surface energy, high in anti-waxing efficiency and high in bonding strength with a substrate, can be used for solving the problems of waxing prevention of inner walls of oil storing equipment and oil refining equipment, and can further be used for solving the problems of antifouling and algae prevention of ships, racing boats or submarines, as well as antifouling and algae prevention of buildings.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a coating, in particular to an anti-wax coating for oil pipelines. Background technique [0002] Most of the crude oil produced in my country is highly viscous, easy to condense, and high in wax content. According to statistics, crude oil with a mass fraction of wax exceeding 10% accounts for almost 90% of the entire output of crude oil, and most of the crude oil has a mass fraction of wax of 20%. % or more, some even as high as 40~50%. Waxy crude oil is generally dissolved in the crude oil under the formation conditions, but in the production process, due to the drop of temperature and pressure and the escape of light components, when the temperature drops below the wax precipitation point, the wax gradually disappears. The crude oil is precipitated and deposited on the surface of the sucker rod of the downhole device and the inner wall of the oil storage pipeline a...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D163/00C09D167/06C09D171/00C09D7/12C09D5/08C09D5/16B32B27/08
CPCC09D175/04C08K2201/011C08L2205/035C09D5/08C09D5/1662C09D5/1687C09D171/00C08L63/00C08L67/06C08L33/08C08K5/05C08K2003/3009C08K3/16C08K2003/2227C08K3/36C08K2003/2241
Inventor 裴素朋韩生孙迎新
Owner SHANGHAI INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com