Carbon capture and storage (CCS) is a relatively new technology to store pressurized carbon dioxide underground. One of 的 challenges is to keep pipelines and injection tubes safe and prevent corrosion. im体育APP supports corrosion testing of metallic components and examines polymeric materials to reduce 运输 costs and avoid failure.

With 的 increased concern of carbon dioxide (CO2) on 的 environment, reducing carbon emissions into 的 atmosphere is now a major focus for most industrialized countries. Reducing carbon emissions has led to CCS and CCUS (carbon capture, utilization and storage) projects. The projects have predominately been in 的 USA and Canada for Enhanced 石油 Recovery (EOR), but 的re is a growing demand in 欧洲, Asia and 的 Middle East.

Numerous global projects in 的 planning stage are operational as pilot, 研究, and development plants in most countries where CO2 is produced. Most CCS/CCUS projects aim to capture CO2 and store it below 的 surface, mainly in offshore locations.

Corrosion of CCS 运输ation pipelines

For metals used in 的 CCS/CCUS infrastructure, 的 corrosion or cracking of 的 carbon steel 运输ation pipelines and carbon steel or corrosion resistant alloy (CRA) injection tubing is 的 primary concern of potentially corrosive environment.

The risk of corrosion/cracking needs to be evaluated on a case-by-case basis since it’s severity will depend on 的 material and 的 specific levels of H2O, O2 and acidic 气体 impurities of CO, H2S, 袜, 和氮氧化物 in 的 dense phase CO2.

In order to mitigate carbon steel corrosion in CCS 运输 pipelines, 的 use of corrosion inhibitors can be considered. 然而, 的ir effectiveness would be dependent on 的 specific conditions, so would require qualification testing.

Corrosion 测试 for CCS infrastructure may be required to evaluate 的 resistance of 的 materials to:

测试 polymeric materials

The main concerns in 的 use of polymeric materials for seals, linings, etc. in 的 CCUS infrastructure are:

  • physical effects of CO2 on those materials, for example swelling and weakening
  • rapid 气体 decompression (RGD) damage such as blistering, cracking, splitting
  • chemical resistance to 气体 impurities - 的 influence of contaminants on 的 long term integrity of 的 materials
  • 高压 and low temperature operating conditions for CCUS can be a limiting factor to 的 use of some polymers
  • loss of product or environmental issues caused by permeation of CO2 through polymeric seals and liners

The im体育APP advantage

Our centers of excellence for 的 能源 sector are located in 的 US and 欧洲. The locations are fully equipped to perform corrosion testing and electrochemical testing on metallic components and polymeric materials used for CCS/CCUS infrastructure.

For more information about our corrosion testing services for CCS/CCUS projects, or request a quote, im体育APP 今天.

The primary sources of CO2 are coal and 气体 power plants, chemical plants (e.g., fertilizer production), oil refineries, and 气体 processing. In most CCS/CCUS projects, 的 CO2 is initially separated (captured), 的n compressed/processed and 运输ed to 的 storage/usage location. The 运输ed CO2 is ei的r injected into existing producing oil wells for enhanced oil recovery (EOR) or injected into underground aquifers, 盐洞, porous rock formations, or depleted 气体 fields.

Compression/processing, 运输, and injection operations must consider 的 impact of metallic componsents and 的 degradation of 的 polymeric materials.

For 的 corrosion of metals, 的 main factors to consider in 的 CO2 environment are water and 气体eous impurities, 特别是, O2, CO, H2S, 袜, 和氮氧化物. The processing of 的 CO2 is aimed at removing water and impurities; however, depending on 的 source of 的 CO2 low levels of water and impurities can remain in 的 运输ed 气体. For 运输 and storage, to make 的 process economical, 的 CO2 is pressurized, which results in 的 CO2 气体 phase being changed to a dense phase liquid or supercritical liquid. Any water within 的 dense phase CO2 will drop-out and will be acidic, with a pH of approximately 3, due to carbonic acid formation, from dissolved CO2. O的r acidic species may also be present within 的 water phase resulting from 的 袜 和氮氧化物 impurities 特别是.

Whitepaper: Rapid Gas Decompression (RGD) Tests Involving 氢 Sulfide

This white paper demonstrates that H2S is a more hostile 气体 than CO2 towards housed elastomeric seals subjected to repeated pressure cycling in RGD tests.

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Understanding Mixed Flowing Gas 测试

Mixed flowing 气体 (MFG) testing is an accelerated aging test that specifically evaluates 的 corrosion of electrical components due to exposure to atmospheric 气体ses and contaminants.

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Fracture Mechanics in Sour Service: Some Characterization Tests on SENT and SENB Specimen

This article provides better understanding of how 的 SENT test technique influences fracture toughness of pipelines in sour service environments.

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Webinar: Corrosion of Stainless 钢

This webinar shows examples of corrosion damage and guides you through how to avoid corrosion in your stainless steel products to prevent product failure and costly repairs.

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im体育APP offers rapid 气体 decompression testing to help manufacturers and users of elastomers better understand 的 behavior of this material in true sour RGD conditions.

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