Fouling of Nearly Incompatible Oils

Wiehe, Irwin A.; Kennedy, Raymond J.; Dickakian, G.

doi:10.1021/ef010063i

Cited by 72 publications

(64 citation statements)

References 4 publications

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“…To understand chemical conversions, numerous studies have been carried out on asphaltenes and on their detailed structure and chemistry (Alboudwarej et al, 2002;Ancheyta et al, 2002;Bartholdy and Andersen, 2000;Bartholdy et al, 2001;Buch et al, 2003;Moschopedis et al, 1976;Sheu, 2002;Snyder, 1969;Wiehe et al, 2001 and literature ORDER REPRINTS cited therein). It was concluded that asphaltenes would be constituted of various chemical species composed of condensed polyaromatic units with heteroatoms contents, bearing alicyclic sites substituted and connected with aliphatic chains (Groenzin and Mullins, 2000).…”

Section: Introductionmentioning

confidence: 99%

Size Exclusion Chromatography: Characterization of Heavy Petroleum Residues. Application to Resid Desulfurization Process

Merdrignac

Truchy

Robert

et al. 2004

Petroleum Science and Technology

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Size exclusion chromatography (SEC) is still the only of the existing analytical methods that can easily and routinely provide information on relative asphaltene molecular weight distributions. However, molecular weight characterization still suffers from several physicochemical drawbacks such as association of molecular units, adsorption on column material and lack of appropriate standards, which are not always underlined in the petrochemical literature where SEC is used as a routine analytical tool. Thus, the resulting molecular weight distribution can be either overestimated or underestimated depending on the chosen experimental conditions: sample concentration, solvent, temperature, type of column packing. In order to ORDER REPRINTS further reduce these artefacts, the influence of the above operating parameters has been studied on Arabian petroleum asphaltenes. Our results show that the obtained bimodal profiles are mainly due to association-dissociation phenomena rather than the co-existence of two distinct molecular populations of low and high molecular weights. Based on these results, samples from pilot plants were studied. We will show that SEC enables to differentiate asphaltenes from different source rocks and to follow feed and effluent evolutions during hydroconversion process. Even though this technique should be only used on a relative basis to compare molecular weight distributions at given analytical conditions, it was revealed to be very useful for the understanding of main hydroconversion reaction pathways.

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Section: Introductionmentioning

confidence: 99%

Size Exclusion Chromatography: Characterization of Heavy Petroleum Residues. Application to Resid Desulfurization Process

Merdrignac

Truchy

Robert

et al. 2004

Petroleum Science and Technology

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“…Crude oils from different sources when blended can result in rapid fouling [22] and coking in PHT. In order to predict the proportion of blending oils which would avoid incompatibility, certain crude oil tests were developed [23].…”

Section: Fouling With Crude Oilmentioning

confidence: 99%

Fouling and its effect on the thermal performance of heat exchanger tubes

Sarma¹,

Konijeti²,

Subramanyam³

et al. 2017

IJHT

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The phenomena of fouling and corrosion in heat exchanger tubes commonly encountered in industrial practice are reviewed in two phases. In the first phase, the influence of physical and chemical properties of petroleum crude on scaling and fouling are reviewed. Further, in the second phase a generalized hypothesis is provided for unsteady analysis as function of time with the aid of logarithmic, exponential and Power law variation of fouling factors with time. The time dependent thermal characteristics of typical parallel and counter flow heat exchangers are established with the aid of time dependent fouling factors. The approach presented is in good agreement with the reported values of a petroleum refinery. Thus, a method to estimate the critical period for maintenance of the heat exchanger is established treating fouling as a time variable occurrence.

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“…Accordingly, the present study is an attempt to develop a quantitative fouling-property correlation via controlled fouling experiments, oil characterization, and modeling. The experiments were conducted with the hot liquid process simulator (HLPS) manufactured by Alcor Petroleum Instruments Inc. [12,13]. Fouling data were obtained with five whole crude oils in laminar shear flow.…”

Section: Introductionmentioning

confidence: 99%

“…The test duration is three hours. A more detailed schematic diagram of the test unit can be found elsewhere [12,13].…”

Section: Introductionmentioning

confidence: 99%

A study of crude oil fouling propensity

Ho¹

2016

International Journal of Heat and Mass Transfer

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Fouling of Nearly Incompatible Oils

Cited by 72 publications

References 4 publications

Size Exclusion Chromatography: Characterization of Heavy Petroleum Residues. Application to Resid Desulfurization Process

Size Exclusion Chromatography: Characterization of Heavy Petroleum Residues. Application to Resid Desulfurization Process

Fouling and its effect on the thermal performance of heat exchanger tubes

A study of crude oil fouling propensity

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