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Preparation and anti-coking application of sol–gel SiO(2) coating in a delayed coking furnace

To isolate iron sulphide and reduce coke adhesion reactions that occur on the surface of a delayed coking furnace, a SiO(2) coating was developed on Cr9Mo alloy by employing the sol–gel method. The coating was characterised through Fourier transformation infrared spectroscopy, X-ray diffraction, sca...

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Detalles Bibliográficos
Autores principales: Liu, Jinglei, Wang, Xiangxiang, Wang, Hao, Xu, Hong, Yang, Jiangfeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8695414/
https://www.ncbi.nlm.nih.gov/pubmed/35423529
http://dx.doi.org/10.1039/d1ra00237f
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author Liu, Jinglei
Wang, Xiangxiang
Wang, Hao
Xu, Hong
Yang, Jiangfeng
author_facet Liu, Jinglei
Wang, Xiangxiang
Wang, Hao
Xu, Hong
Yang, Jiangfeng
author_sort Liu, Jinglei
collection PubMed
description To isolate iron sulphide and reduce coke adhesion reactions that occur on the surface of a delayed coking furnace, a SiO(2) coating was developed on Cr9Mo alloy by employing the sol–gel method. The coating was characterised through Fourier transformation infrared spectroscopy, X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, potentiodynamic scanning, InfiniteFocus optical 3D surface metrology, thermal shock and coking experiments. After heat treatment at 550 °C, the silicon methyl groups were oxidised and the coating exhibited a Si–O–Si connected crosslinked network structure. The coating surface was uniformly dense with a roughness and thickness of 0.2 and approximately 4 μm, respectively. The coating still adhered to the substrate tightly after 20 cycles of thermal shock treatment. Compared with an uncoated sample, the coating effectively improved the corrosion resistance of the substrate, suppressed the iron sulphide reaction, and reduced coke adhesion onto the sample. The coating had a better inhibition effect on coke fouling in a delayed coking furnace.
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spelling pubmed-86954142022-04-13 Preparation and anti-coking application of sol–gel SiO(2) coating in a delayed coking furnace Liu, Jinglei Wang, Xiangxiang Wang, Hao Xu, Hong Yang, Jiangfeng RSC Adv Chemistry To isolate iron sulphide and reduce coke adhesion reactions that occur on the surface of a delayed coking furnace, a SiO(2) coating was developed on Cr9Mo alloy by employing the sol–gel method. The coating was characterised through Fourier transformation infrared spectroscopy, X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, potentiodynamic scanning, InfiniteFocus optical 3D surface metrology, thermal shock and coking experiments. After heat treatment at 550 °C, the silicon methyl groups were oxidised and the coating exhibited a Si–O–Si connected crosslinked network structure. The coating surface was uniformly dense with a roughness and thickness of 0.2 and approximately 4 μm, respectively. The coating still adhered to the substrate tightly after 20 cycles of thermal shock treatment. Compared with an uncoated sample, the coating effectively improved the corrosion resistance of the substrate, suppressed the iron sulphide reaction, and reduced coke adhesion onto the sample. The coating had a better inhibition effect on coke fouling in a delayed coking furnace. The Royal Society of Chemistry 2021-03-08 /pmc/articles/PMC8695414/ /pubmed/35423529 http://dx.doi.org/10.1039/d1ra00237f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Liu, Jinglei
Wang, Xiangxiang
Wang, Hao
Xu, Hong
Yang, Jiangfeng
Preparation and anti-coking application of sol–gel SiO(2) coating in a delayed coking furnace
title Preparation and anti-coking application of sol–gel SiO(2) coating in a delayed coking furnace
title_full Preparation and anti-coking application of sol–gel SiO(2) coating in a delayed coking furnace
title_fullStr Preparation and anti-coking application of sol–gel SiO(2) coating in a delayed coking furnace
title_full_unstemmed Preparation and anti-coking application of sol–gel SiO(2) coating in a delayed coking furnace
title_short Preparation and anti-coking application of sol–gel SiO(2) coating in a delayed coking furnace
title_sort preparation and anti-coking application of sol–gel sio(2) coating in a delayed coking furnace
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8695414/
https://www.ncbi.nlm.nih.gov/pubmed/35423529
http://dx.doi.org/10.1039/d1ra00237f
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