Citation: Liu Yanjun, Tang Xiaorong, Hu Kun. Study on Flow Characteristics of Natural Gas Hydrate Slurry with Decomposition in Vertical Tube[J]. Chemistry, ;2018, 81(3): 267-273. shu

Study on Flow Characteristics of Natural Gas Hydrate Slurry with Decomposition in Vertical Tube

College of Electromechanical Engineering, Southwest Petroleum University, Chengdu 610500

Corresponding author: Liu Yanjun, liuyanjun2016@sina.cn
Received Date: 18 July 2017
Accepted Date: 18 December 2017

Figures(11)

The Euler multiphase flow model and the Finite-Rate/Eddy-Dissipation model were used to study the flow characteristics of solid-liquid two-phase flow and the gas-liquid-solid flow in the vertical pipeline. The results showed that the velocity distribution and the volume distribution of hydrate both exhibit a fluctuation-uniform-fluctuation law with the change of height effected by gas from decomposition of hydrate slurry. Besides, it was found that the gas producing from hydrate dissociation on the slurry transportation has a drag reduction effect, and it can be proposed that natural gas hydrate three-phase flow slurry flow rate should not be less than 3.0 m/s. Finally, the relationship between the loss of the hydraulic lift and the flow rate of the hydrate slurry was fitted through the analysis of the resistance characteristics of the pipeline, which will provide guidance on the economic upgrading of gas hydrate slurry pipelines.
- Natural gas hydrate,
- Decomposition,
- Vertical tube,
- Flow characteristics,
- Simulation
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