含蜡原油管输过程化学组成与应用研究进展①

甘亦凡 成庆林 孙 巍 苏文坤 刘 扬

(东北石油大学提高油气采收率教育部重点实验室)

甘亦凡 成庆林 孙 巍 苏文坤 刘 扬

(东北石油大学提高油气采收率教育部重点实验室)

1 化学基准物选取

2 含蜡原油管输过程化学反应

(1)

(2)

图1 各油田原油化学反应计算结果对比

3 含蜡原油管输过程化学扩散

(3)

(4)

在计算含蜡原油活度系数时，可采用较为精确的正规溶液理论模型，即：

(5)

其中，Vi为组分摩尔体积，δi为组分溶解度参数，T为溶液温度，溶解度参数δm=∑δiφi，φi=xiVi(∑xiVi)-1。因此，只要计算出组分i的溶解度参数和摩尔体积就可以得到活度系数。对于溶解度参数，Riazi M R和Al-Sahhaf T A提出了一个正构烷烃液相溶解度参数的关系式[38]，Leelavanichkul P等建立了一个异构环烷烃、芳香烃和组分i固相溶解度参数的表达式[39]。对于组分i的液相摩尔体积，可以由ViL=Mi/di25和Leelavanichkul P等建立的各碳氢化合物液相密度求得。对于组分i的固相摩尔体积，当体系中组分碳数不小于7时，可从相关化工手册查询，当碳数大于7时，可由经验公式计算。

4 含蜡原油管输过程化学传递

5 结束语

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ResearchProgressintheChemicalExergyCompositionandApplicationinWaxyCrudeOilPipelineTransportationProcess

GAN Yi-fan,CHENG Qing-lin,SUN Wei,SU Wen-kun,LIU Yang

(MOEKeyLaboraryforEnhancingOilandGasRecoveryRatio,NortheastPetroleumUniversity)

The theoretical achievements and development status of chemical exergy reference environment’s selection,chemical reaction exergy,chemical diffusion exergy and chemical exergy transfer at home and abroad were reviewed;through considering the actual application of chemical exergy analysis and chemical exergy transfer in engineering,the main problems existed in this field were indicated.

waxy crude oil pipeline transportation process,reaction exergy,diffusion exergy,chemical exergy transfer

国家自然科学基金项目(51534004)；黑龙江省普通高校科技创新团队基金项目(2009td08)

甘亦凡(1992-)，博士研究生，从事热力学分析与油气储运系统综合节能的研究，2905818298@qq.com。

TQ051.21

A

0254-6094(2017)04-0375-07

2017-01-19)