摘要
为了确定最有利于管道输送的二氧化碳状态,从物理性质出发,分析了密度、运动粘度及质量热容随温度与压力的变化情况,结果表明:二氧化碳处于超临界状态更有利于管道输送。从水力、热力角度出发,应用Hysys软件对二氧化碳处于不同状态时的管道输送情况进行模拟,得到管输压降-管道长度、流体温度-管道长度、热损失-管道长度变化曲线,并计算得出二氧化碳不同状态时的有效管道输送距离。分别对含有氮气和甲烷两种杂质的二氧化碳管输情况进行模拟计算,结果表明:杂质对气态和超临界二氧化碳输送管道基本没有影响,但对液态二氧化碳输送管道影响较大,且在相同条件下,氮气的影响大于甲烷的影响。
To determine the favorite state of CO2 in pipeline transportation, changes of density, kinematic viscosity and mass heat capacity with temperature and pressure are analyzed for their physical properties. The results show that CO2 in the supercritical state is more suitable to the pipeline transportation. Starting from the hydraulics and thermodynamics, Hysys software is used to simulate pipeline transportation conditions where CO2 is in different states to the obtain change curves of pipeline transportation pressure drop vs pipeline length, fluid temperature vs pipeline length and heat loss vs pipeline length and calculate the effective transportation distances of CO2 in different states. Analog computation is calculated for CO2 pipeline transportation cases respectively with nitrogen and methane impurities. The results show that the impurities almost have no effect on gaseous and supercritical CO2 transportation pipeline but play a larger effect on the CO2 liquid pipelines and nitrogen plays a larger effect than methane under the same conditions. （1 Table, 9 Figures, 6 References）
出处
《油气储运》
CAS
2013年第1期15-19,共5页
Oil & Gas Storage and Transportation
