Supercharge Your Innovation With Domain-Expert AI Agents!

Vapor phase inhibitor and preparation method thereof

A gas-phase corrosion inhibitor and synergist technology, which is applied in chemical instruments and methods, earthwork drilling, wellbore/well components, etc., can solve problems such as pipeline corrosion, and achieve the effect of slowing down corrosion, environmental protection and corrosion resistance

Active Publication Date: 2019-03-05
CHINA PETROLEUM & CHEM CORP +1
View PDF11 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a gas-phase corrosion inhibitor to solve the corrosion problem of sulfur and sulfide on sulfur-related devices and pipelines in high-sulfur gas fields in the prior art

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
  • Vapor phase inhibitor and preparation method thereof
  • Vapor phase inhibitor and preparation method thereof
  • Vapor phase inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The gas-phase corrosion inhibitor of this embodiment is composed of the following components in mass percentage: 20% of 2-mercaptobenzimidazole, 40% of cyclohexylamine carbonate, 2% of hexamethylenetetramine, 3% of ammonium benzoate, carbon Amide 5%, acetone 30%.

[0039] The preparation method of the vapor phase corrosion inhibitor of the present embodiment may further comprise the steps:

[0040] According to the above formula, measure acetone in a reaction kettle with a temperature-controlled frequency conversion mixer, adjust the temperature to 50°C, and add 2-mercaptobenzimidazole and cyclohexylamine carbonate at a speed of 300r / min, and then slowly add hexamethylene Tetramine, ammonium benzoate and carbonamide, and then stirred for 30 minutes until fully dissolved, and the mixed liquid became uniform and clear.

Embodiment 2

[0042] The vapor phase corrosion inhibitor of this example is composed of the following components in mass percentage: 20% of N,N'-dicyclohexyl-4-morpholine amidine, 40% of cyclohexylamine carbonate, and 1.0% of hexamethylenetetramine , Ammonium Benzoate 1.5%, Carboxamide 2.5%, Isopropanolamine 35%.

[0043] The preparation method of the vapor phase corrosion inhibitor of the present embodiment may further comprise the steps:

[0044] According to the above formula, measure isopropanolamine in a reaction kettle with a temperature-controlled frequency conversion mixer, adjust the temperature to 50°C, and add N,N'-dicyclohexyl-4-morpholine amidine, Cyclohexylamine carbonate, then slowly add hexamethylenetetramine, ammonium benzoate and carboxamide, and then stir for 30 minutes until fully dissolved, and the mixed liquid becomes uniform and clear.

Embodiment 3

[0046] The vapor phase corrosion inhibitor of this embodiment is composed of the following components in mass percentage: 35% of N,N'-dicyclohexyl-4-morpholine amidine, 35% of dicyclohexylamine benzoate, and hexamethylenetetramine 2.0%, Ammonium Benzoate 3%, Carboxamide 5%, Acetone 20%.

[0047] The preparation method of the vapor phase corrosion inhibitor of the present embodiment may further comprise the steps:

[0048] According to the above formula, measure acetone in a reaction kettle with a temperature-controlled frequency conversion mixer, adjust the temperature to 50°C, and add N,N'-dicyclohexyl-4-morpholine amidine, benzoic acid di Cyclohexylamine, then slowly add hexamethylenetetramine, ammonium benzoate and carbamide, and then stir for 30 minutes until fully dissolved, and the mixed liquid becomes uniform and clear.

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
flash pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to a vapor phase inhibitor and a preparation method thereof, and belongs to the technical field of oil field chemicals. The vapor phase inhibitor is composed of following components in percentage by weight: 55 to 70% of nitrogen containing cyclic organic compound, 5 to 10% of synergist, and 20 to 40% of coupling agent. The nitrogen containing cyclic organic compound is prepared by compounding aromatic heterocyclic compounds with amino alicyclic compounds according to a mass ratio of 1:1-3. The nitrogen containing cyclic organic compound comprises polar corrosion-inhibiting groups such as mercapto- (-SH), amino- (-NH2), and the like, and can form a stable complex after the nitrogen containing cyclic organic compound is adsorbed on the iron surface. Adsorption layers are formed in molecules or between molecules through hydrogen bonds, at the same time, the cyclic compound has a special rigid structure, thus hydrogen sulfide can be baffled effectively, the contact between H<+> and a metal surface is prevented, and the corrosion of sulfur and sulfides on the devices and pipelines in a gas field with a high sulfur content is prevented.

Description

technical field [0001] The invention relates to a gas-phase corrosion inhibitor and a preparation method thereof, belonging to the technical field of oilfield chemicals. Background technique [0002] The volume fraction of hydrogen sulfide in natural gas produced in high-sulfur gas fields is generally between 13% and 18%. The purpose of purifying natural gas is to remove hydrogen sulfide in natural gas through a combined purification device. Hydrogen sulfide is a hydrogen permeating medium, which is highly corrosive to iron equipment. The corrosion mechanism of hydrogen sulfide is mainly the electrochemical corrosion of hydrogen sulfide and the hydrogen damage caused by hydrogen sulfide, which leads to two corrosion forms: one One is the general or partial corrosion caused by the electrochemical corrosion process, which is manifested as the wall thickness reduction or pitting perforation of metal equipment; the other is the environmental cracking caused by hydrogen damage, 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): C09K8/54
CPCC09K8/54
Inventor 郭西水黄雪松商剑锋李楹王清岭苗宏马雯胡庆祥
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • 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