摘要
超临界/密相CO_(2)管道输送是当前国际上实现长距离、大规模碳运输最为安全且经济的方式。适用于超临界/密相CO_(2)的水力热力计算模型可为CO_(2)管道工艺设计参数选择及方案优选提供理论支撑。针对现有模型存在的不足,本文以考虑高程差的管道稳态连续性方程、运动方程和能量守恒方程为基础,采用PR(Peng-Robinson)状态方程计算CO_(2)物性参数,结合焓、熵、温度、压力、密度的热力学关系式,通过提出合理假设条件,全面联立运动方程和能量方程,推导建立了一维非等温超临界/密相CO_(2)管道稳态输送水力热力耦合计算模型。本文分别通过实验和OLGA软件从多个方面验证了模型具有较高的精度。该模型简洁易用,避免了烦琐复杂且耗时耗力的数值求解过程,大幅降低了计算难度,可为超临界/密相CO_(2)管道输送工艺仿真软件国产化提供理论与技术支持。
Supercritical/dense-phase CO_(2)pipeline transportation is the safest and most economical way to realize long-distance and large-scale carbon transportation in the world.The hydraulic-thermal calculation model for supercritical/dense-phase CO_(2)can provide theoretical support for the selection of CO_(2)pipeline process design parameters and program selection.Aiming at the deficiencies of the existing models,this paper takes the pipeline steady-state continuity equation,equation of motion and energy conservation equation considering the elevation difference as the basis,adopts the PR equation of state to calculate the physical parameters of CO_(2),combines the thermodynamic equations of enthalpy,entropy,temperature,pressure,and density,and deduces and establishes a one-dimensional non-isothermal supercritical/dense-phase CO_(2)pipeline steady-state transport hydr aulic-thermal calculation model by putting forward reasonable assumptions,and comprehensively associating the equations of motion and energy equations.The model is verified by experiments and OLGA software in various aspects with high accuracy.It is simple and easy to use,which avoids the complicated and time-consuming numerical solution process and greatly reduces the computational difficulty.It can provide theoretical support and technical support for the localization of the simulation software for supercritical/dense-phase CO_(2)pipeline transport process.
作者
王梓丞
张海帆
袁鹏
孙晨
邹炜杰
李欣泽
邢晓凯
WANG Zicheng;ZHANG Haifan;YUAN Peng;SUN Chen;ZOU Weijie;LI Xinze;XING Xiaokai(Oil Production Technology Research Institute(Supervision C ompany),Petro China Xinjiang Oilfield Company,Karamay 834000,Xinjiang,China;School of Engineering,China University of Petroleum(Beijing)at Karamay,Karamay 834000,Xinjiang,China;Xinjiang Key Laboratory of Multi-Medium Pipeline Safety Transportation,Urumqi 830011,Xinjiang,China)
出处
《化工进展》
北大核心
2025年第8期4701-4708,共8页
Chemical Industry and Engineering Progress
基金
新疆维吾尔自治区自然科学基金(2023D01A19)
新疆维吾尔自治区“天池英才”引进计划(TCYC12)
新疆维吾尔自治区天山创新团队项目(2022TSYCTD0002)
新疆维吾尔自治区“一事一议”引进战略人才项目(XQZX20240054)
中国石油天然气股份有限公司新疆油田分公司项目(2024 XJZX 0806)。
关键词
超临界CO_(2)
管道输送
稳态
水力热力耦合
密相
supercritical CO_(2)
pipeline transportation
steady-state
hydraulic-thermal coupling
dense-phase
