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A low-alloy material resistant to carbon dioxide corrosion and its preparation method and application

A carbon dioxide, low-alloy technology, applied in the field of pressure processing, which can solve problems such as poor corrosion resistance in corrosive environments

Active Publication Date: 2022-07-22
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to apply to the carbon peak and carbon neutralization gathering and transportation pipeline to resist two kinds of high temperature and high pressure CO 2 The problem of poor corrosion resistance in corrosive environments provides a high temperature and high pressure gas / liquid two-phase CO 2 Corroded low-alloy material and its preparation method and application

Method used

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  • A low-alloy material resistant to carbon dioxide corrosion and its preparation method and application
  • A low-alloy material resistant to carbon dioxide corrosion and its preparation method and application
  • A low-alloy material resistant to carbon dioxide corrosion and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0035] A kind of high temperature and high pressure CO 2 Corroded low-alloy material, composition by mass percentage: C 0.05%, Si 0.2%, Mn 0.8%, Cr 0.7%, Mo 0.2%, Al 0.02%, P 0.004, S 0.002%, Ti 0.04, V 0.05, Nb 0.03, Zr 0.03, and the rest are Fe.

[0036] The continuous casting slab was heated to 1110°C and soaked for 40min. After heating, the continuous casting slab undergoes a high-speed wire rolling process to prepare a cross-section round steel. The rolling temperature is 1060 °C and the final rolling temperature is 860 °C. The hot-rolled wire rod is acceleratedly cooled by high-speed water, and the final water cooling temperature is 825°C. After that, accelerated air was used for cooling, and the cooling rate was 3 °C / s, and the air cooling was stopped after cooling to 225 °C. After hot rolling, the surface iron oxide scale is removed from the wire rod, and a cold forming experiment is carried out to obtain a special-shaped steel with a cross section.

[0037] The cr...

Embodiment 2

[0041] an anti-CO 2 Corroded low alloy material, composition by mass percentage: C 0.08%, Si 0.36%, Mn 0.9%, Cr 0.75%, Mo 0.23%, Al 0.03%, P 0.006, S 0.004, Ti 0.08, V 0.1 , Nb 0.05, Zr 0.05, and the rest are Fe.

[0042] The continuous casting slab was heated to 1150°C and soaked for 50min. After heating, the continuous casting billet undergoes a high-speed wire rod rolling process to prepare a cross-section round steel. The rolling temperature is 1070 °C and the final rolling temperature is 875 °C. The hot-rolled wire rod is acceleratedly cooled by high-speed water, and the final water cooling temperature is 825°C. After that, accelerated air was used for cooling, and the cooling rate was 4°C / s, and the air cooling was stopped after cooling to 315°C. After hot rolling, the surface iron oxide scale is removed from the wire rod, and a cold forming experiment is carried out to obtain a special-shaped steel with a cross section.

[0043] The cross-section special-shaped stee...

Embodiment 3

[0047] an anti-CO 2 Corroded low-alloy material, composition by mass percentage: C 0.11%, Si 0.4%, Mn1%, Cr 0.8%, Mo 0.25%, Al 0.04%, P 0.008, S 0.004, Ti 0.1, V 0.15, Nb 0.07, Zr 0.07, and the rest are Fe.

[0048] The continuous casting slab was heated to 1200°C and soaked for 60min. After heating, the continuous casting billet undergoes a high-speed wire rod rolling process to prepare a cross-section round steel. The rolling temperature is 1080°C and the final rolling temperature is 880°C. The hot-rolled wire rod is acceleratedly cooled by high-speed water, and the final water cooling temperature is 830°C. After that, accelerated air was used for cooling, and the cooling rate was 5°C / s, and the air cooling was stopped after cooling to 325°C. After hot rolling, the surface iron oxide scale is removed from the wire rod, and a cold forming experiment is carried out to obtain a special-shaped steel with a cross section.

[0049] The section special-shaped steel is subjected...

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Abstract

The invention discloses a low-alloy material resistant to carbon dioxide corrosion, which is composed of components in mass percentage: C is 0.03-0.15%, Si is 0.15-0.6%, Mn is 0.6-1.3%, Cr is 0.7-0.9%, Mo is 0.2‑0.3%, Al is 0.01‑0.04%, P is ≤0.01, S is ≤0.005%, Ti is 0.03‑0.2, V is 0.04‑0.2, Nb 0.02‑0.1, Zr 0.02‑0.1 and the rest are composed of Fe , the total mass percentage is 100%, and the microstructure of the material is tempered martensite + second phase particles. The low alloy material of the present invention exhibits good resistance to both high temperature and high pressure CO 2 Environmental corrosion performance, i.e. resistance to high temperature and high pressure CO 2 Water environment and high temperature and high pressure CO 2 The gas environment is corrosive, the cost is low, and the preparation is simple. The invention also discloses an anti-CO 2 Preparation method and application of corroded low alloy material.

Description

technical field [0001] The invention belongs to the technical field of pressure processing, and in particular relates to a high temperature and high pressure CO 2 Corroded low-alloy materials and methods of making and using the same. Background technique [0002] Climate change has become one of the world's top environmental issues and one of the most important issues. The core issue is how to control the concentration of greenhouse gases to keep the temperature at a level that prevents the climate system from being dangerously disturbed by humans. CO 2 is the predominant greenhouse gas since the Industrial Revolution CO 2 Emissions are increasing year by year. my country plans to CO2 around 2030 2 Emissions have peaked, and it is planned to increase the share of non-fossil energy in primary energy consumption to 20% by 2030. In order to alleviate the greenhouse effect, my country has proposed a national strategy of carbon neutralization. As a new type of carbon neutral...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/22C22C38/24C22C38/26C22C38/28F16L57/00C21D8/06
CPCC22C38/02C22C38/04C22C38/06C22C38/22C22C38/28C22C38/24C22C38/26C21D8/065F16L57/00
Inventor 刘珍光翟阳东潘楠郑传波
Owner JIANGSU UNIV OF SCI & TECH