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Investigation into THF hydrate slurry flow behaviour and inhibition by an anti-agglomerant

Hydrate plugs are one of the highest risks for gas and oil transportation in pipelines, especially in deep sea environments. In a newly built-up loop, pilot-scale experiments were carried out to study typical hydrate plug phenomena and to explore the specific reasons behind these. A tetrahydrofuran...

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Autores principales: Zhang, Hao, Du, Jianwei, Wang, Yanhong, Lang, Xuemei, Li, Gang, Chen, Jianbiao, Fan, Shuanshi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9079222/
https://www.ncbi.nlm.nih.gov/pubmed/35539396
http://dx.doi.org/10.1039/c8ra00857d
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author Zhang, Hao
Du, Jianwei
Wang, Yanhong
Lang, Xuemei
Li, Gang
Chen, Jianbiao
Fan, Shuanshi
author_facet Zhang, Hao
Du, Jianwei
Wang, Yanhong
Lang, Xuemei
Li, Gang
Chen, Jianbiao
Fan, Shuanshi
author_sort Zhang, Hao
collection PubMed
description Hydrate plugs are one of the highest risks for gas and oil transportation in pipelines, especially in deep sea environments. In a newly built-up loop, pilot-scale experiments were carried out to study typical hydrate plug phenomena and to explore the specific reasons behind these. A tetrahydrofuran (THF) hydrate slurry was formed and investigated in this loop fluid at two liquid loadings (50 vol% and 100 vol%) with/without a typical anti-agglomerant, KL-1. Morphology and temperature variations revealed that THF hydrate slurry evolution had four stages: (a) flowable fluid; (b) particle formation; (c) agglomeration; and (d) plug. The effect of liquid loading (LL) and an anti-agglomerant (AA) on morphology and temperature in three cases were studied. The morphologies in each stage were compared for the three cases. Hydrate conversion was calculated according to the liquid and solid volume proportion in these morphologies. From these morphologies, heterogeneous hydrate deposition was found to be more likely to happen in 50 vol% than in the 100 vol% LL system. The hydrate plug was also found to be induced by hydrate deposition rather than the bed at the bottom of the pipeline. By dispersing hydrate particle agglomeration, AA compressed hydrate deposition and the plug.
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spelling pubmed-90792222022-05-09 Investigation into THF hydrate slurry flow behaviour and inhibition by an anti-agglomerant Zhang, Hao Du, Jianwei Wang, Yanhong Lang, Xuemei Li, Gang Chen, Jianbiao Fan, Shuanshi RSC Adv Chemistry Hydrate plugs are one of the highest risks for gas and oil transportation in pipelines, especially in deep sea environments. In a newly built-up loop, pilot-scale experiments were carried out to study typical hydrate plug phenomena and to explore the specific reasons behind these. A tetrahydrofuran (THF) hydrate slurry was formed and investigated in this loop fluid at two liquid loadings (50 vol% and 100 vol%) with/without a typical anti-agglomerant, KL-1. Morphology and temperature variations revealed that THF hydrate slurry evolution had four stages: (a) flowable fluid; (b) particle formation; (c) agglomeration; and (d) plug. The effect of liquid loading (LL) and an anti-agglomerant (AA) on morphology and temperature in three cases were studied. The morphologies in each stage were compared for the three cases. Hydrate conversion was calculated according to the liquid and solid volume proportion in these morphologies. From these morphologies, heterogeneous hydrate deposition was found to be more likely to happen in 50 vol% than in the 100 vol% LL system. The hydrate plug was also found to be induced by hydrate deposition rather than the bed at the bottom of the pipeline. By dispersing hydrate particle agglomeration, AA compressed hydrate deposition and the plug. The Royal Society of Chemistry 2018-03-27 /pmc/articles/PMC9079222/ /pubmed/35539396 http://dx.doi.org/10.1039/c8ra00857d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Zhang, Hao
Du, Jianwei
Wang, Yanhong
Lang, Xuemei
Li, Gang
Chen, Jianbiao
Fan, Shuanshi
Investigation into THF hydrate slurry flow behaviour and inhibition by an anti-agglomerant
title Investigation into THF hydrate slurry flow behaviour and inhibition by an anti-agglomerant
title_full Investigation into THF hydrate slurry flow behaviour and inhibition by an anti-agglomerant
title_fullStr Investigation into THF hydrate slurry flow behaviour and inhibition by an anti-agglomerant
title_full_unstemmed Investigation into THF hydrate slurry flow behaviour and inhibition by an anti-agglomerant
title_short Investigation into THF hydrate slurry flow behaviour and inhibition by an anti-agglomerant
title_sort investigation into thf hydrate slurry flow behaviour and inhibition by an anti-agglomerant
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9079222/
https://www.ncbi.nlm.nih.gov/pubmed/35539396
http://dx.doi.org/10.1039/c8ra00857d
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