管道输送高压CO_(2)能耗分析及相态选择研究  

Energy Consumption Analysis and Phase Selection Study of High-pressure CO_(2)Transportation in Pipelines

作　　者：李凯旋 梁俊逸 刘斌 滕霖 LI Kaixuan;LIANG Junyi;LIU Bin;TENG Lin(College of Mechanical Engineering,Shijiazhuang Tiedao University;Engineering Technology Innovation Co.,Ltd.,PipeChina;College of Chemical Engineering,Fuzhou University)

机构地区：[1]石家庄铁道大学机械工程学院 [2]国家管网集团工程技术创新有限公司 [3]福州大学石油化工学院

出　　处：《油气田地面工程》2025年第2期1-7,共7页Oil-Gas Field Surface Engineering

基　　金：国家自然科学基金“干冰颗粒碰撞聚并行为的微尺度界面演化机制研究”(52204072)。

摘　　要：碳捕集与封存技术(Carbon Capture and Storage,简称CCS)是实现“双碳目标”的托底技术,作为CCS技术链中间环节,高压管道运输是大规模和长距离输送二氧化碳(CO_(2))最经济的方式。目前,普遍认为超临界输送为最优输送相态。但我国地缘广阔,环境温度差别很大,在运输成本方面,外部条件对不同相态(超临界、密相)的CO_(2)运输成本影响显著。为研究不同条件下的能耗影响因素,建立了CO_(2)输送管道一维模型,模拟了不同条件下不同相态的运输管道。研究表明:环境温度、初始条件等对管道输送能耗均有不同的影响,得出在一定管径下,液态输送在环境温度-5℃以下更合适,而超临界输送在环境温度-5℃以上更合适。该研究可为不同环境温度下CO_(2)管道输送工艺选择做参考。Carbon capture and storage(CCS)is a foundational technology for achieving the"dual carbon goals".The most cost-effective method for moving huge quantities of carbon dioxide(CO_(2))over long distances is through high-pressure pipeline transportation,which serves as the intermediate link in the CCS technology chain.Supercritical transport is now thought to be the best mode of transportation.External factors significantly affect the cost of transporting CO_(2)in various phase states(supercritical and dense phase),however,due to China's huge geographic region and wide variations in ambient temperature.In order to study the factors affecting energy consumption under different conditions,a one-dimensional model of a CO_(2)transport pipeline is created,and simulations of various transport pipelines in various phase states and environments are performed.It is demonstrated that ambient temperature,initial conditions,and other factors have different impacts on energy consumption during pipeline transportation,and it is determined that for a given pipe diameter,liquid transportation is more suitable at an ambient temperature below-5℃,while supercritical transportation is more suitable at an ambient temperature above-5℃.This article can serve as a reference for the selection of CO_(2)pipeline transportation processes under different ambient temperatures.

关 键 词：碳捕集与封存技术 管道运输 输送能耗 二氧化碳 超临界 密相 

分 类 号：X701[环境科学与工程—环境工程] TE832[石油与天然气工程—油气储运工程]