Simulation Study on the Effects of Impurities on the Phase Behavior, Transport Characteristics, and Compression Performance of CO 2
不純物がCO2の相挙動、輸送特性、圧縮性能に及ぼす影響に関するシミュレーション研究 (AI 翻訳)
Xinfeng Qian, Xin Wang, Dacai Li, Dawei Hou, Jing Wang, Linjun Yang
🤖 gxceed AI 要約
日本語
本シミュレーション研究では、Aspen HYSYSを用いてN2、O2、H2Oなどの不純物がCCUSのCO2圧縮・液化・輸送に与える影響を系統的に調査。不純物は熱力学的特性を変化させ、圧力損失を増大し、圧縮エネルギー消費を増加させることを定量的に示した。CCUSシステムの設計・運用に理論的基盤を提供。
English
This study uses Aspen HYSYS to simulate the effects of N2, O2, and H2O impurities on CO2 compression, liquefaction, and pipeline transport in CCUS. Results show impurities alter thermodynamic properties, increase pressure loss, and raise compression energy consumption. The study provides a theoretical basis for CCUS system design and operation.
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
日本政府はGX実現に向けCCUSの推進を掲げており、本研究成果は国内のCO2輸送インフラ設計や圧縮プロセスの効率化に直接活用できる基礎データを提供する。
In the global GX context
This paper provides quantitative insights into impurity effects on CO2 compression and transport, which is critical for the safe and efficient design of CCUS pipelines and liquefaction facilities worldwide.
👥 読者別の含意
🔬研究者:Researchers in CCUS process simulation can use these quantitative data to validate models and optimize impurity tolerance.
🏢実務担当者:CCUS project engineers can apply the findings to design compression and pipeline systems that account for real-world CO2 stream compositions.
📄 Abstract（原文）
CO 2 compression and liquefaction are critical process in carbon capture, utilization, and storage (CCUS) systems. However, CO 2 streams obtained from capture sources often contain impurities such as N 2 , O 2 , and H 2 O, which significantly alter the thermophysical properties of pure CO 2 and pose considerable challenges for system design and operation. In this study, the Peng–Robinson equation of state was employed within the Aspen HYSYS process simulation platform to systematically investigate the effects and mechanisms of these typical impurities on CO 2 throughout the processes of compression, liquefaction, and pipeline transportation. The results reveal the quantitative influence of impurities on the thermodynamic properties, pipeline characteristics, and compression performance of CO 2 . N 2 and O 2 decrease the critical temperature and increase the critical pressure of the CO 2 mixture, whereas H 2 O exhibits the opposite effect. In terms of thermodynamic properties, the density of CO 2 is more sensitive to pressure variation, whereas viscosity and thermal conductivity are more sensitive to impurity concentration. N 2 and O 2 exhibit similar effects, whereas the influence of H 2 O on viscosity and thermal conductivity is negligible. During pipeline transportation, the presence of impurities intensifies pressure loss and pressure drop, with H 2 O exerting the most significant influence, whereas temperature distribution is only slightly affected. In the compression process, N 2 and O 2 increase the compressibility factor of CO 2 and shift the compression path to the right on the pressure–enthalpy ( p – H ) diagram, leading to a considerable rise in compression energy consumption. The total energy consumption increases with impurity concentration. This study provides a solid theoretical basis and valuable data support for the optimized design, safe operation, and economic performance of industrial processes involving CO 2 mixtures containing impurities.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1002/ghg.70028first seen 2026-05-05 23:59:28
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