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

Didodecanyl-diformamide bipyridine quaternary ammonium salt soluble corrosion inhibitor and its preparation method and application

A technology of dicarboxamide bipyridine and dodecyl dimethyl benzyl ammonium chloride, applied in organic chemistry and other directions, can solve the problem of uniform corrosion of pipelines and equipment, decreased adsorption capacity of corrosion inhibitors, and decreased corrosion inhibition effect, etc. problem, to maximize the corrosion inhibition effect, improve the film coverage, and improve the adsorption capacity.

Active Publication Date: 2022-05-20
BC P INC CHINA NAT PETROLEUM CORP +2
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The internal transmission medium of oil and gas field gathering and transportation pipelines and equipment is mainly a mixture of oil, gas and water, rich in CO 2 And other acidic corrosive media, at the same time, the medium contains high chloride ions, which will cause serious uniform corrosion and localized corrosion to the inside of pipelines and equipment, resulting in a large number of economic losses and serious safety hazards
[0003] Adding a suitable high-efficiency corrosion inhibitor is one of the effective ways to prevent corrosion in pipelines and equipment, but in CO 2 In the gathering and transportation environment of oil and gas fields with saturated high salinity (salinity 20000mg / L-200000mg / L), the adsorption capacity of corrosion inhibitors is greatly reduced, and the corrosion inhibition effect is reduced. How to target CO 2 The development of new corrosion inhibitors in saturated high salinity corrosion environment has become a problem to be solved

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Didodecanyl-diformamide bipyridine quaternary ammonium salt soluble corrosion inhibitor and its preparation method and application
  • Didodecanyl-diformamide bipyridine quaternary ammonium salt soluble corrosion inhibitor and its preparation method and application
  • Didodecanyl-diformamide bipyridine quaternary ammonium salt soluble corrosion inhibitor and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0049] According to a typical embodiment of the present invention, there is provided a method for preparing a didodecanyl-diformamide bipyridyl quaternary ammonium salt aqueous corrosion inhibitor, which is used to prepare the aforementioned didodecanyl-diformamide bipyridyl Quaternary ammonium salt soluble corrosion inhibitors, including:

[0050] Preparation of dodecyl-diformamide bipyridine quaternary ammonium salt mixed solution;

[0051] According to the mass parts, cetyl trimethyl ammonium bromide, dodecyl dimethyl benzyl ammonium chloride, diethylene glycol monobutyl ether, ethylene glycol monobutyl ether, diglycolamine, 3-octyn 1-alcohol, N,N-dimethylformamide and the didodecanyl-diformamide bipyridine quaternary ammonium salt mixture are mixed to obtain the didodecanyl-diformamide bipyridine quaternary ammonium salt mixture. Pyridinium quaternary ammonium salt soluble corrosion inhibitor.

[0052] In some optional embodiments, the preparation of the didodecanyl-dica...

Embodiment 1

[0063] The didodecyl-diformamide bipyridyl quaternary ammonium salt soluble corrosion inhibitor provided in this example and its preparation are as follows:

[0064] 1) React 2,2'-bipyridine-4,4'-dicarboxylic acid and dodecylamine at 110°C for 4h, add benzyl chloride after the reaction is complete, and react at 80°C for 4.5h to obtain Didodecyl-diformamide bipyridine quaternary ammonium salt mixture;

[0065] 2) 15 parts by weight of the didodecanyl-diformamide bipyridine quaternary ammonium salt mixed solution prepared in step 1), and 2 parts of cetyltrimethylammonium bromide, 1 part of dodecyl Alkyl dimethyl benzyl ammonium chloride, 10 parts of diethylene glycol monobutyl ether, 10 parts of ethylene glycol monobutyl ether, 2 parts of diglycolamine, 1 part of 3-octyn 1-ol, The rest is N,N-dimethylformamide, fully dissolved and mixed at 40°C to obtain the dodecyl-diformamide bipyridyl quaternary ammonium salt soluble corrosion inhibitor.

[0066] refer to figure 1 , figur...

Embodiment 2

[0068] The didodecyl-diformamide bipyridyl quaternary ammonium salt soluble corrosion inhibitor provided in this example and its preparation are as follows:

[0069] 1) React 2,2'-bipyridyl-4,4'-dicarboxylic acid and dodecylamine at 110°C for 4 hours, add benzyl chloride after the reaction is complete, and react at 70°C for 4 hours to obtain bis Lauryl-diformamide bipyridine quaternary ammonium salt mixture.

[0070] 2) 15 parts by weight of the didodecyl-diformamide bipyridine quaternary ammonium salt mixed solution prepared in step 1), and 3 parts of cetyltrimethylammonium bromide, 2 parts of dodecyl Alkyl dimethyl benzyl ammonium chloride, 12 parts of diethylene glycol monobutyl ether, 12 parts of ethylene glycol monobutyl ether, 3 parts of diglycolamine, 1 part of 3-octyn 1-ol, The rest is N,N-dimethylformamide, fully dissolved and mixed at 45°C to obtain the dodecyl-diformamide bipyridyl quaternary ammonium salt soluble corrosion inhibitor.

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

No PUM Login to View More

Abstract

The present invention specifically relates to a dodecyl-dicarboxamide bipyridine quaternary ammonium salt soluble corrosion inhibitor and its preparation method and application, belonging to the technical field of metal anti-corrosion materials. The dodecyl-dicarboxamide provided by the invention Formamide bipyridine quaternary ammonium salt solution corrosion inhibitor includes didodecyl-diformamide bipyridine quaternary ammonium salt mixture; add 30mg / L of dodecyl-dicarboxamide bipyridine quaternary ammonium salt prepared by this implementation case Ammonium salt soluble corrosion inhibitor, which can achieve corrosion inhibition efficiency of steel sheet > 95%.

Description

technical field [0001] The invention belongs to the technical field of metal anticorrosion materials, and in particular relates to a dodecyl-diformamide bipyridyl quaternary ammonium salt soluble corrosion inhibitor and a preparation method and application thereof. Background technique [0002] The internal transmission medium of oil and gas field gathering and transportation pipelines and equipment is mainly a mixture of oil, gas and water, rich in CO 2 Such acidic corrosive media, and the high content of chloride ions in the medium, will cause serious uniform corrosion and localized corrosion to the inside of pipelines and equipment, resulting in a large number of economic losses and serious safety hazards. [0003] Adding a suitable high-efficiency corrosion inhibitor is one of the effective ways to prevent corrosion in pipelines and equipment, but in CO 2 In the gathering and transportation environment of oil and gas fields with saturated high salinity (salinity 20000mg...

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 Patents(China)
IPC IPC(8): C23F11/14C07D213/82
CPCC23F11/149C07D213/82
Inventor 李玲杰张红磊杨耀辉张彦军娄亮杰王志涛张盈盈王伟
Owner BC P INC CHINA NAT PETROLEUM CORP
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