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Effects of Hydrate Inhibitors on the Adhesion Strengths of Sintered Hydrate Deposits on Pipe Walls by Liu Chenwei; Yang Liang; Zhou Chenru; Wang Zhiyuan; Li Mingzhong is a Chemistry article available to read on EtoBox.

What is Effects of Hydrate Inhibitors on the Adhesion Strengths of Sintered Hydrate Deposits on Pipe Walls about?

The effects of hydrate inhibitors on the adhesion of sintered hydrate deposits on pipe walls are still unexplored. Herein, a custom-built adhesion strength measurement apparatus was utilized to quantify the adhesion strengths of sintered cyclopentane (CyC5) hydrate deposits with thermodynamic inhibitors (ethylene glycol, glycerol) and low-dosage inhibitors (dodecylbenzene sulfonic acid (DBSA), sorbitan oleate (Span 80)). It was found that the hydrate adhesion strengths decreased by 69.82%-97.06% and 40.24%-94.36% with the concentration of ethylene glycol and glycerol increased from 2 wt% to 6 wt%, respectively. For DBSA and Span 80, the hydrate adhesion strength increased with concentration less than 0.01 wt% due to the acceleration on hydrate growth. The further increment of concentration leads to a dramatic reduction in adhesion strengths. Furthermore, the relatively large deviations with the predicted strengths led to the discussions of the effects of change in hydrate formation rate, crystal morphology, and also the adaption of the fitting model. Two modified models were proposed to give a better prediction/explanation of the hydrate adhesion with thermodynamic inhibitors and l

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Author

Liu Chenwei; Yang Liang; Zhou Chenru; Wang Zhiyuan; Li Mingzhong

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Chemistry (Physical Sciences)