Acid Drop-Out in Carbon Capture and Transport Systems: Causes, Consequences, and Countermeasures
炭素回収・輸送システムにおける酸析出：原因、結果、対策 (AI 翻訳)
Garima Mittal, Shiladitya Paul
🤖 gxceed AI 要約
日本語
本レビューは、CCSパイプラインにおける不純物（SOx, NOx, H2S等）による酸性液滴析出と局部腐食のメカニズムを解説。相挙動、酸性形成、腐食対策（脱水、合金、コーティング、モデリング）を総括し、多成分不純物下での長期性能評価の重要性を指摘している。
English
This review examines acid precipitation in dense-phase/supercritical CO2 pipelines containing reactive impurities. It covers phase behavior, acid formation, corrosion mechanisms, and mitigation strategies including dehydration, corrosion-resistant alloys, coatings, and modeling tools. The paper highlights knowledge gaps in multi-impurity conditions and thermo-hydraulic transients, proposing future work for safe CCS deployment.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本ではCCSがGX実現の柱の一つとされ、CO2パイプラインの安全性は実用化の鍵。本稿は不純物管理や材料選定の知見を提供し、SSBJやGXリーグでのCCS評価にも示唆を与える。
In the global GX context
Global CCS deployment depends on pipeline integrity. This review provides critical insights into impurity-induced corrosion and mitigation, informing standards development (e.g., ISO/TC265) and safe operation for carbon transport networks.
👥 読者別の含意
🔬研究者:Researchers in CCUS and corrosion engineering will find a comprehensive synthesis of acid dropout mechanisms and open questions for experimental and modeling work.
🏢実務担当者:Pipeline operators and CCS project developers can use the mitigation strategies (dehydration, corrosion-resistant materials) to inform design and maintenance protocols.
🏛政策担当者:Policymakers involved in CCS infrastructure regulation and standards can leverage the review's recommendations for impurity specifications and safety codes.
📄 Abstract（原文）
Carbon capture and storage (CCS) technology can play an important role in meeting net-zero ambitions; however, its successful deployment depends on the transport and storage infrastructure for CO2, as they are the backbone of the carbon management industry. Among the key integrity threats for dense-phase and supercritical CO2 pipelines, acid precipitation or dropout in CO2-rich streams containing reactive impurities (SOx, NOx, H2S, H2O, O2, etc.) is one of the most serious. These impurities can alter phase behavior, promote formation of highly acidic liquid-phase condensates, and trigger severe localized corrosion and rapid wall-thickness loss. This review focuses on understanding the effects of specific combinations of impurities on CO2 phase envelopes, acid formation, and corrosion mechanisms in pipelines under realistic flow and operating conditions. It further assesses mitigation and design strategies, including impurity specification and control, deep dehydration, operational envelope management, corrosion-resistant alloys, internal linings and advanced coatings, and emerging modeling tools for predicting corrosive dropout. The knowledge gap in long-term performance under multi-impurity conditions, thermo-hydraulic transients, and coupled corrosion damage is highlighted. Additionally, the importance of future experimental, modeling, and standards development work to enable safe, cost-effective material solutions for CCS technology deployment is proposed.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/ma19142934first seen 2026-07-10 05:19:08 · last seen 2026-07-10 05:29:00
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