单组分气体自发凝结成核率模型修正

doi:10.7623/syxb201611013

石油学报 ›› 2016, Vol. 37 ›› Issue (11): 1443-1450.DOI: 10.7623/syxb201611013

单组分气体自发凝结成核率模型修正

杨文^1,2, 曹学文¹, 陈鹏³, 靳学堂¹, 胥锟¹

1. 中国石油大学储运与建筑工程学院山东青岛 266580;
2. 中国石化销售有限公司华南分公司广东广州 510620;
3. 中国石油西气东输管道公司(西气东输销售公司)郑州管理处河南郑州 450000

收稿日期:2015-12-09 修回日期:2016-05-05 出版日期:2016-11-25 发布日期:2016-12-10
通讯作者: 曹学文,男,1966年2月生,1986年获石油大学(华东)学士学位,2004年获西安交通大学博士学位,现为中国石油大学(华东)教授、博士生导师,主要从事多相管流及油气田集输技术方面的研究工作。Email:caoxw@upc.edu.cn
作者简介:杨文,男,1987年10月生,2010年获中国石油大学(华东)学士学位,2016年获中国石油大学(华东)博士学位,现为中国石化销售有限公司华南分公司工程师,主要从事管道完整性管理技术方面的研究。Email:yangwen112006@163.com
基金资助:
国家自然科学基金项目（No.51274232，No.51406240）资助。

Model modification of single-component gas spontaneous nucleation rate

Yang Wen^1,2, Cao Xuewen¹, Chen Peng³, Jin Xuetang¹, Xu Kun¹

1. College of Pipeline and Civil Engineering, China University of Petroleum, Shandong Qingdao 266580, China;
2. Southern China Subsidiary of Sinopec Sales Company Limited, Guangdong Guangzhou 510620, China;
3. Zhengzhou Management Office, PetroChina West East Gas Pipeline Company(PetroChina West East Gas Marketing Company), Henan Zhengzhou 450000, China

Received:2015-12-09 Revised:2016-05-05 Online:2016-11-25 Published:2016-12-10

摘要/Abstract

摘要：

单组分气体自发凝结成核率预测模型中，内部一致经典成核理论（ICCT）因其较好的准确度得到了较为广泛的关注，但该模型仍存在未考虑真实气体效应及液滴曲率半径对表面张力影响的缺点。鉴于此，从两方面对ICCT模型进行了改进与修正，并与水、重水、醇类（正丙醇、正丁醇）、烃类（正庚烷、正辛烷）等成核率实验数据进行对比，以验证模型的准确性。研究结果表明：同时考虑真实气体效应及液滴曲率半径对表面张力影响时，水及重水修正模型计算结果比ICCT模型更好，但醇类、烃类等气体计算结果反而不如ICCT模型，预测效果较差，认为产生此现象的原因是Benson & Shuttleworth（BS）表面张力模型的不准确性；仅考虑真实气体效应的修正模型对各类介质的计算结果均取得了比ICCT模型更好的预测结果，推荐在成核率计算时使用此模型。

关键词: 单组分气体, 自发凝结, 成核率, 真实气体效应, 表面张力

Abstract:

Among the prediction models of single-component gas spontaneous nucleation rate, internal consistent classical nucleation theory (ICCT) has attracted more attentions because of its higher accuracy. However, the defect also exists in this model, i.e., the real gas effect and the influence of droplet curvature radius on the surface tension have not been considered. Accordingly, the ICCT model was modified from these two aspects and compared with the experimental data of nucleation rate including water, heavy water, alcohols (n-propanol and n-butanol), alkanes (n-heptane and n-octane) and etc., so as to verify the accuracy of modified model. The research results show that when considering both real gas effect and the influence of droplet curvature radius on surface tension, the calculation results of water and heavy water are better than those of ICCT model, while the calculation results of alcohols, alkanes and other gases are worse than those of ICCT model, indicating poor prediction effects. This phenomenon is caused by the inaccuracy of Benson & Shuttleworth (BS) surface tension model. Compared with ICCT model, the modified model only considering real gas effect can provide better calculation results for various media, so that this model is recommended for nucleation rate calculation.

Key words: single-component gas, spontaneous condensation, nucleation rate, real gas effect, surface tension

中图分类号:

TE622

杨文, 曹学文, 陈鹏, 靳学堂, 胥锟. 单组分气体自发凝结成核率模型修正[J]. 石油学报, 2016, 37(11): 1443-1450.

Yang Wen, Cao Xuewen, Chen Peng, Jin Xuetang, Xu Kun. Model modification of single-component gas spontaneous nucleation rate[J]. Acta Petrolei Sinica, 2016, 37(11): 1443-1450.

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单组分气体自发凝结成核率模型修正

Model modification of single-component gas spontaneous nucleation rate

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