管输工况对LNG冷能梯级利用效益的影响

发布时间：2018-04-27 13:49

本文选题：LNG + 管道输送　；参考：《油气储运》2017年11期

【摘要】：为了拓宽LNG冷能利用厂的选址范围,实现LNG管道输送与冷能利用的协同耦合,对LNG管输与冷能梯级利用工艺流程进行模拟计算。基于化工过程模拟软件HYSYS,建立了LNG过冷态管输与冷能梯级利用的耦合模型。利用PR方程的相平衡计算能力,分析了一定输量下管径与保冷层厚度对冷态输送距离、建设费用的影响,研究了管输距离对冷能梯级利用的经济性影响。结果表明:在一定输量下,以压降为LNG气化主要影响因素的小管径输送工艺方案,其输送距离短、单位管长的造价低,提高保冷等级对其输送距离不会产生显著影响;以LNG潜热为主要冷源的第1级冷能利用工艺,其经济性对输送距离最为敏感,且随着转输距离的增加,其经济效益降低。
[Abstract]:In order to widen the site selection range of LNG cold energy utilization plant and realize the cooperative coupling between LNG pipeline transportation and cold energy utilization, the process flow of LNG pipeline transportation and cold energy cascade utilization was simulated and calculated. Based on the chemical process simulation software HYSYS, a coupling model of LNG supercooled pipe transportation and cold energy cascade utilization is established. Based on the calculation ability of phase equilibrium of PR equation, the influence of pipe diameter and cooling layer thickness on cold transport distance and construction cost is analyzed, and the economic effect of pipe transportation distance on cold energy cascade utilization is studied. The results show that the transportation distance is short and the cost of unit pipe length is low with pressure drop as the main influencing factor of LNG gasification. The economy of the first stage cold energy process with LNG latent heat as the main cold source is most sensitive to the transportation distance, and the economic benefit decreases with the increase of the transfer distance.
【作者单位】：长江大学石油工程学院;
【基金】：湖北省大学生创新创业计划项目“LNG冷能利用及运行模拟”,1014892014041 国家自然科学基金资助项目“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资助项目“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资助项目“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资助项目“页岩气采输流动保障及应用新技术”,2015cqt01
【分类号】：TE832

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