Vapor phase inhibitor for metal natural gas gathering and transporting pipeline and preparation method for vapor phase inhibitor

A gas-phase corrosion inhibitor and natural gas technology, applied in the field of gas-phase corrosion inhibitor and its preparation, can solve the problem that the corrosion inhibitor cannot inhibit the corrosion of oil and gas transmission pipelines, etc., to overcome the weak alkalinity, easy to use, and reduce economic costs Effect

Inactive Publication Date: 2012-08-15
HARBIN INST OF TECH
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to solve the problem that existing corrosion inhibitors cannot deal with high CO 2 The content of oil and gas transmission pipelines plays a role in corrosion inhibition, and a gas phase corrosion inhibitor for natural gas metal gathering and transportation pipelines and its preparation method are provided

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 for metal natural gas gathering and transporting pipeline and preparation method for vapor phase inhibitor

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0009] Embodiment 1: This embodiment is a gas-phase corrosion inhibitor for natural gas metal gathering and transportation pipelines. The gas-phase corrosion inhibitor for natural gas metal gathering and transportation pipelines is formed by mixing components A and B. The B component accounts for 300ppm to 500ppm (ppm: one millionth) of the volume of the A component, wherein the A component is composed of 10% to 20% N-methyldiethanolamine, 3% by mass fraction. ~7% ethanolamine, 1%~3% diethylenetriamine, 0.10%~0.25% imidazole, 0.25%~0.40% sec-octanol polyoxyethylene ether, 1.00%~1.50% benzotriazole , 0.80% to 1.00% of quinoline and 68% to 80% of distilled water; wherein the B component is a sulfonate type anionic surfactant.

[0010] Corrosion inhibitor is an organic alcohol amine molecule with both hydrophilic and hydrophobic amphiphilic properties, and a surfactant and a diffusing agent are used to coordinate the release agent, so that the interaction force between the molecu...

specific Embodiment approach 2

[0017] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the sulfonate-type anionic surfactants are alkylbenzene sulfonates, α-olefin sulfonates, alkyl sulfonates or Alpha-sulfomonocarboxylate.

specific Embodiment approach 3

[0018] Embodiment 3: The present embodiment is a preparation method of a gas-phase corrosion inhibitor for natural gas metal gathering and transportation pipelines, and is specifically completed according to the following steps:

[0019]1. Preparation of component A: 1. Weighing: weigh 10%-20% N-methyldiethanolamine, 3%-7% ethanolamine, 1%-3% diethylenetriamine, 0.10%~0.25% imidazole, 0.25%~0.40% sec-octanol polyoxyethylene ether, 1.00%~1.50% benzotriazole, 0.80%~1.00% quinoline and 68%~80% distilled water 2. Prepolymerization: firstly, 10%~20% N-methyldiethanolamine, 3%~7% ethanolamine, 1%~3% diethylenetriamine and 0.10% N-methyldiethanolamine, 1%~3% diethylenetriamine and 0.10 %~0.25% of imidazole is mixed evenly, and heated and stirred for 2h~4h under the conditions of a temperature of 90℃~100℃ and a stirring speed of 100r / min~150r / min to obtain a prepolymer; ③. ② The prepared prepolymer was cooled to room temperature, and then added in step ① according to the mass fractio...

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 invention discloses a preparation method for the vapor phase inhibitor for a metal natural gas gathering and transporting pipeline, and relates to a vapor phase inhibitor and a preparation method of the vapor phase inhibitor. The problem that the conventional corrosion inhibitor can not perform corrosion inhibition on a pipeline for conveying oil gas with high CO2 content is solved. The method comprises the following steps of: 1. preparing the component A; and 2. mixing, namely adding the component B into the component A for uniform mixing, and standing the mixture at room temperature for certain time, so as to obtain the vapor phase inhibitor for the metal natural gas gathering and transporting pipeline. The method is mainly used for preparing the vapor phase inhibitor for the metal natural gas gathering and transporting pipeline.

Description

technical field [0001] The invention relates to a gas phase corrosion inhibitor and a preparation method thereof. Background technique [0002] CO in recent years 2 Corrosion has become the main form of corrosion in the exploitation of oil and gas fields, and has affected the safe production of the natural gas industry. Corrosion and protection research has become an urgent problem to be solved in the oil and gas industry. Prevent or reduce CO 2 The corrosion of metal pipelines in natural gas transmission systems by gas and its weakly acidic aqueous solution is a current research focus. [0003] CO 2 corrosion due to CO 2 It dissolves in water to form carbonic acid, which reacts with the surface of mild steel to cause corrosion. In the past, the methods of preventing corrosion of natural gas gathering and transportation pipelines were mostly the use of high-alloy steel and glass fiber reinforced plastic materials, inner wall coatings or linings, and pH value enhancemen...

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): C23F11/02
Inventor 张春华王智博徐慧芳张文生赵玉波
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap