二氧化碳水合物浆在圆管中的流动特性

doi:10.3969/j.issn.0438-1157.2014.02.026

化工学报 ›› 2014, Vol. 65 ›› Issue (2): 550-554.DOI: 10.3969/j.issn.0438-1157.2014.02.026

二氧化碳水合物浆在圆管中的流动特性

刘妮, 戴海凤, 余宏毅, 由龙涛

上海理工大学能源与动力工程学院, 上海 200093

收稿日期:2013-06-14 修回日期:2013-08-19 出版日期:2014-02-05 发布日期:2014-02-05
通讯作者: 刘妮（1974- ），女，博士，副教授。
基金资助:
国家自然科学基金项目（50706028）；上海市教委科研创新项目（12YZ106）。

Flow properties of CO₂ hydrate slurry in circular tube

LIU Ni, DAI Haifeng, YU Hongyi, YOU Longtao

School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

Received:2013-06-14 Revised:2013-08-19 Online:2014-02-05 Published:2014-02-05
Supported by:
supported by the National Natural Science Foundation of China(50706028) and the Innovation Program of Shanghai Municipal Education Commission(12YZ106).

摘要/Abstract

摘要： 实验研究了固相分数为8.2%～23.1%的CO₂水合物浆在内径为8 mm的圆管中的流动特性。结果发现水合物浆在管内的流动压降随着流速的增加而增大。当流速低于0.60 m·s^-1时，浆体流变指数小于1，且随着固相体积分数的增大而减小，CO₂水合物浆为H-B流体，其表观黏度随着流速的增大而减小，呈剪切变稀特性。剪切速率为600 s^-1时，CO₂水合物浆的表观黏度为8.5～10.6 mPa·s。实验得到了CO₂水合物浆的流变特征参数及其流变方程，可为CO₂水合物浆的流动及其应用研究提供理论指导。

关键词: 二氧化碳, 水合物浆, 流动, 压降, 黏度

Abstract: An experimental setup was established to produce CO₂ hydrate slurry by cooling after CO₂ injection in precooled water. The flow characteristics of CO₂ hydrate slurry with 8.2%—23.1%(vol) in a 8 mm straight stainless steel circular tube were studied in a dynamic loop. The pressure drops of CO₂ hydrate slurry were measured and it increased with the increase of flow rate. The flow of CO₂ hydrate slurry presente non-Newtonian behavior. At flow rate v < 0.60 m·s^-1, behavior index n < 1 and decreased with the increase of solid fraction. CO₂ hydrate slurry behaved as a Herschel-Bulkley fluid. Apparent viscosity decreased with the increase of shear rate, showing shear-thinning characteristics. Apparent viscosity of CO₂ hydrate slurry was from 8.5 mPa·s to 10.6 mPa·s at shearing rate of 600 s^-1. The rheological parameters and equations were determined, providing the guide for the research of CO₂ hydrate slurry flow properties and its application.

Key words: carbon dioxide, hydrate slurry, flow, pressure drop, viscosity

中图分类号:

TQ031

刘妮, 戴海凤, 余宏毅, 由龙涛. 二氧化碳水合物浆在圆管中的流动特性[J]. 化工学报, 2014, 65(2): 550-554.

LIU Ni, DAI Haifeng, YU Hongyi, YOU Longtao. Flow properties of CO₂ hydrate slurry in circular tube[J]. CIESC Journal, 2014, 65(2): 550-554.

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二氧化碳水合物浆在圆管中的流动特性

Flow properties of CO₂ hydrate slurry in circular tube

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二氧化碳水合物浆在圆管中的流动特性

Flow properties of CO2 hydrate slurry in circular tube

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Flow properties of CO₂ hydrate slurry in circular tube