当前位置：
X-MOL 学术
›
Ind. Eng. Chem. Res.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Formation and Flow Characteristics of Methane Hydrates in High-Pressure Pipelines
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-06-15 , DOI: 10.1021/acs.iecr.2c01372 Shaochang Huang 1 , Guiyang Ma 1 , Chunyang Zang 1 , Yan Wang 1 , Xiangpeng Wang 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-06-15 , DOI: 10.1021/acs.iecr.2c01372 Shaochang Huang 1 , Guiyang Ma 1 , Chunyang Zang 1 , Yan Wang 1 , Xiangpeng Wang 1
Affiliation
|
To ensure the safe flow of the hydrate slurry in the pipeline, a high-pressure flow loop with visual capability was designed, and flow characteristics and growth kinetics of methane (CH4) hydrates from the pure water system were investigated. Experiment results showed that with an increase in the flow rate, the induction time first increased and subsequently decreased. When the flow rate was higher than 360 L/h, the loop was not blocked. The effect of NaCl on polyvinylpyrrolidone (PVP) as the kinetic inhibitor on the nucleation and growth of methane hydrates was studied by measuring the hydrate induction time and gas consumption. The results show that the addition of PVP was found to significantly prolong the hydrate induction time and decrease the amount of gas consumption; the presence of NaCl enhanced the inhibition strength of PVP. Through the focused beam reflectance measurement (FBRM), the results indicated that the hydrate particle size in the loop decreases with an increase of flow rate, and the added PVP to the system led to smaller average particle size. Based on the analysis of pressure difference and flow rate, the mechanism of pipe clogging in the pure water system was put forward. We believe that this research can provide theoretical support for the industrial application of CH4 hydrate slurry flow to some extent.
中文翻译：
高压管道中甲烷水合物的形成及流动特性
为保证管道内水合物浆液的安全流动，设计了具有可视化能力的高压流动回路，分析了甲烷（CH 4) 研究了纯水系统中的水合物。实验结果表明，随着流量的增加，诱导时间先增加后减少。当流速高于 360 L/h 时，回路没有堵塞。通过测量水合物的诱导时间和耗气量，研究了氯化钠对聚乙烯吡咯烷酮（PVP）作为动力学抑制剂对甲烷水合物成核和生长的影响。结果表明，PVP的加入显着延长了水合物的诱导时间，降低了耗气量；NaCl的存在增强了PVP的抑制强度。通过聚焦光束反射率测量（FBRM），结果表明回路中的水合物粒径随着流量的增加而减小，并且向系统中添加 PVP 会导致更小的平均粒径。在分析压差和流量的基础上，提出了纯水系统管道堵塞的机理。我们相信本研究可为CH的工业应用提供理论支持。4水合物浆液流动有一定程度。
更新日期：2022-06-15
中文翻译：
高压管道中甲烷水合物的形成及流动特性
为保证管道内水合物浆液的安全流动，设计了具有可视化能力的高压流动回路，分析了甲烷（CH 4) 研究了纯水系统中的水合物。实验结果表明，随着流量的增加，诱导时间先增加后减少。当流速高于 360 L/h 时，回路没有堵塞。通过测量水合物的诱导时间和耗气量，研究了氯化钠对聚乙烯吡咯烷酮（PVP）作为动力学抑制剂对甲烷水合物成核和生长的影响。结果表明，PVP的加入显着延长了水合物的诱导时间，降低了耗气量；NaCl的存在增强了PVP的抑制强度。通过聚焦光束反射率测量（FBRM），结果表明回路中的水合物粒径随着流量的增加而减小，并且向系统中添加 PVP 会导致更小的平均粒径。在分析压差和流量的基础上，提出了纯水系统管道堵塞的机理。我们相信本研究可为CH的工业应用提供理论支持。4水合物浆液流动有一定程度。
京公网安备 11010802027423号