摘要
两种常见的CO_2液化工艺(低温低压液化工艺和常温高压液化工艺)对存储设备耐低温和耐高压性能要求高,通过HYSYS软件对几种管输流程进行模拟,并对液化流程进行改进。结果表明:在气相、一般液相、密相、超临界4种状态输送方式中,密相输送相比运用较广泛的超临界输送具有一定的优越性;改进后的液化流程不仅适用于密相输送,且克服了低温低压液化和常温高压液化的缺点,能耗和对储罐的性能要求相对较低,存储安全、经济;同时,改进后液化流程获得的液化CO_2易于存储,为CO_2储罐设计提供了一定参考。
In CO2 transmission, two common liquefaction processes （i.e., low-temperature low-pressure liquefaction process and normal-temperature high-pressure liquefaction process） require the storage equipment with extremely high resistance to low temperature and high pressure. In order to find an economic and reasonable CO2 transmission mode, this paper simulated and compared several pipeline transmission processes with the HYSYS software, aiming to work out an improved liquefaction process which has lower requirements for temperature and pressure. The results show that, in the proposed four types of transmission modes, i.e. gas-phase, liquid-phase, dense-phase and supercritical-state, the dense- phase mode is superior to the widely used supercritical-state mode. The improved liquefaction mode is suitable for dense- phase transmission, without the defects of low-temperature low-pressure liquefaction process and normal-temperature high- pressure liquefaction process. Moreover, the improved mode is less energy-consuming and can ensure safe and economic storage in tanks for which no high performance is required. The CO2 liquefied with this improved process is easy to store, providing a reference for the CO2 tank design.
出处
《油气储运》
CAS
北大核心
2016年第10期1066-1071,共6页
Oil & Gas Storage and Transportation
基金
国家自然科学基金"CO2气氛下煤及碳氢燃料燃烧碳烟颗粒物(Soot)的形成机制"
51306022
湖北省自然科学基金"CO2氛围下煤粉火焰挥发份中碳烟颗粒物(Soot)的形成机制研究"
2013CFB398
中国石油科技创新基金"稠油热采地面注汽锅炉热能高效利用及CO2富集驱油联产技术研究"
2015D-5006-0603
长江青年科技创新团队基金"页岩气采输流动保障及应用新技术"
2015cqt01
关键词
CO2输送
液化
储存
密相输送
方案流程
HYSYS模拟
CO2 transmission liquefaction
storage
dense-phase transmission
solution process
HYSYS simulation
