摘要：The formation and agglomeration of hydrates have been a major hazard to the operating safety of deep-sea oil/gas transportation pipeline. Although many studies have been conducted to investigate the hydrates formation and particle behaviors during the transportation, studies on the gas-slurry flow properties and effects of hydrates on multiphase flow patterns are still almost blank. In this work, a series of experiments were conducted in a high pressure flow loop, using the materials of a pseudo single liquid-phase (saturated water/oil emulsion) and a gas-liquid multiphase, respectively. It was found that hydrates agglomeration was more violent and the flow property was worse in the gas-liquid multiphase system. When hydrates formed in the gas-liquid multiphase system, the liquid flow rate would decrease in all experimental conditions while the gas flow rate showed three different changing types: decreasing, increasing or keeping constant. These changes of the flow rate would further induce a transition of the gas-liquid multiphase flow pattern in the loop. Based on the experimental data, two flow pattern maps were made. One involved the effects of hydrates while the other did not. Through the comparison between the two flow pattern maps, it is confirmed that the influence of hydrates on the flow pattern is significant. The differences between the two flow pattern maps were also analyzed using a flow pattern transition model to provide an insight into the mechanism of how hydrates affect the multiphase flow pattern. (C) 2016 Elsevier Ltd. All rights reserved.

关键字：Hydrates Multiphase system Slurry flow property Flow pattern map Flow pattern transition Mechanism

ISSN号：0009-2509

卷、期、页：卷: 146 页: 199-206

发表日期：2016-06-02

期刊分区（SCI为中科院分区）：二区

收录情况：SCI（科学引文索引印刷版）,ESI（基本科学指标数据库）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：CHEMICAL ENGINEERING SCIENCE

通讯作者：丁麟,吕晓方,柳扬

第一作者：史博会,吴海浩,王玮,宫敬

论文类型：期刊论文

论文概要：丁麟,史博会,吕晓方,柳扬,吴海浩,王玮,宫敬，Investigation of natural gas hydrate slurry flow properties and flow patterns using a high pressure flow loop，CHEMICAL ENGINEERING SCIENCE，2016，卷: 146 页: 199-206

论文题目：Investigation of natural gas hydrate slurry flow properties and flow patterns using a high pressure flow loop