适用于超临界CO_2管道输送的水力模型及特性研究  

Study on Hydraulic Model and Characteristics for Supercritical CO_2 Pipelines

作　　者：刘敏[1] 滕霖[2] 李玉星[2] 李顺丽[2] 李万莉[2] 张大同[2] 

机构地区：[1]北京市燃气集团有限责任公司 [2]中国石油大学(华东)山东省油气储运安全省级重点实验室

出　　处：《油气田地面工程》2016年第6期14-17,共4页Oil-Gas Field Surface Engineering

基　　金：国家科技支撑计划项目"大规模燃煤电厂烟气CO2捕集纯化;输送及安全控制技术研究"(2012BAC24B01);国家自然科学基金项目"含杂质超临界CO2管道输送安全控制关键技术研究"(51374231)

摘　　要：以稳定流的连续性方程、运动方程及能量方程为基础,结合PR方程拟合得到的密度表达式建立了超临界二氧化碳(CO_2)的水力计算模型。对国内外推荐模型及本文建立的模型进行计算比较,优选出适合于超临界二氧化碳的水力计算模型。通过对该水力模型进行分析得出结论:增大管径可以增加输量;同等管长下压气站数量增加1倍,输量可以增加41.4%;输送温度越低,管道输送能力越大;提高起点压力对流量的影响大于降低终点压力对流量的影响。Basing on the stabilized flow equation of continuity equation, motion equation and the energy equation and using density equation established the hydraulic models of supercritical carbon dioxide（CO_2）.Compared with the accuracy of the equations recommended with established,as a result,the established equation is the better one.Based on the analysis on this model,the conclusions can be drawn：the flow rate is increasing with increase of the pipeline size;under same length,each twofold increase of compressor station will cause flow rate increase by 41.4%;the cold temperature can enhance transportation capacity and the increase of initial pressures compared with drop of terminal pressure has greater impacts on transportation capacity.

关 键 词：超临界CO_2 管道输送 水力模型 水力特性 

分 类 号：TQ022.115[化学工程]