Sediment Formation in Catalytically Cracked Distillate Fuel Oils

Offenhauer, Robert D.; Brennan, J. Keirn; Miller, R. C.

doi:10.1021/ie50572a032

Cited by 25 publications

(16 citation statements)

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“…Offenhauer and co-workers have shown that aromatic thiols could increase the rate of sediment formation in catalytically cracked middle distillates as well as decrease the fuel stability in the presence of oxygen. 46 In addition, some studies have demonstrated sulfides and thiols to increase the rate of formation of deposits even if trace amounts of oxygen exists within the system. 47 Investigation of Possible Mechanism for the Sulfur Detection of Sulfur Species with ESI.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The results show the absence of sulfur species under oxygenated condition is in accordance with some results reported in the literature, indicating that sulfur compounds are very reactive in autoxidation reactions. Offenhauer and co-workers have shown that aromatic thiols could increase the rate of sediment formation in catalytically cracked middle distillates as well as decrease the fuel stability in the presence of oxygen . In addition, some studies have demonstrated sulfides and thiols to increase the rate of formation of deposits even if trace amounts of oxygen exists within the system…”

Section: Resultsmentioning

confidence: 99%

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Study of Crude Oil Fouling from Sulfur-Containing Compounds Using High-Resolution Mass Spectrometry

Kondyli

Schräder

2021

Energy Fuels

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With the depletion of conventional resources, heavier and more sulfur-rich crude oils come into the focus of interest. However, the utilization of such feedstocks is extremely undesirable since their high sulfur content causes corrosion fouling, catalyst poisoning, and emissions of toxic pollutants into the atmosphere. As known catalyst poisoners, sulfur-containing compounds are also suspected to play an important role in crude oil fouling, that is, the formation of undesired solid deposits. To overcome these problems, insightful knowledge on the chemical composition of the sulfur-containing compounds on a molecular level and their behavior is necessary. Here, fouling reactions of a gas condensate were simulated in the laboratory under atmospheric and inert conditions, with special focus on sulfur-containing compounds, and the resulting mixtures were analyzed by using sophisticated analytical methods such as ultrahigh-resolution mass spectrometry and electron microscopy. The results indicate that sulfur-containing compounds decompose at elevated temperatures, partly by a radical-induced mechanism. Furthermore, the resulting intermediates show a limited stability in the presence of oxygen.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Study of Crude Oil Fouling from Sulfur-Containing Compounds Using High-Resolution Mass Spectrometry

Kondyli

Schräder

2021

Energy Fuels

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“…Nitrogen-and sulfur-containing compounds have always been strongly involved in the fuel degradation process because these elements become concentrated into the fuel sediments. Consequently researchers (Offenhauer et al, 1956) have investigated the tendency of particular nitrogen heterocyclic and aromatic thiol compounds to promote the sedimentation in fuel.…”

Section: Composition Of Total Gummentioning

confidence: 99%

“…These insoluble are defined as adherent gum and sediments (Ruzicka and Nonderson, 1990), which may trouble the fuel filters and engine components and can lead to increased maintenance problems and maintenance cost as well. Researchers (Offenhauer et al, 1956;Mushrush and Speight, 1995) have reported the chemical nature of the degradation products as well its mechanism . The problem of degradation can be studied in term of storage stability, where the fuel is kept for a longer period.…”

Section: Introductionmentioning

confidence: 99%

The Instability of Storage of Middle Distillate Fuels: A Review

Sharma

2012

Petroleum Science and Technology

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“…The role of strong acids in mid-distillate diesel fuel stability has been the subject of numerous studies including several within this laboratory. − In particular, studies based on the use of sulfonic acids such as DBSA (dodecylbenzenesulfonic acid) added to fuel have implicated these strong acids in the formation of insoluble sediment during periods of accelerated oxidative aging. ,,, …”

Section: Introductionmentioning

confidence: 99%

Effects of Dodecylbenzenesulfonic Acid on Insolubles Production in Mid-Distillate Diesel Fuel Blends

Wechter

Hardy

1996

Energy Fuels

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The role of strong acids in promoting mid-distillate diesel fuel instability has been a topic of interest within the fuel science community. Previous studies have indicated that strong sulfonic acids, when added to fuels that are then subjected to thermal stress accompanied by oxidative aging, tend to produce quantities of insoluble sediment. This work presents results obtained when dodecylbenzenesulfonic acid (DBSA) is added to a blended diesel fuel. We find that a fraction of the insoluble material forms immediately on addition of the acid and we investigate the effects of accelerated aging and DBSA addition on other insolubles related fractions of the fuel sample. Evidence is presented that opens to question the interpretation of results obtained when a reactive reagent is added to a chemical system as complex as a fuel.

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Sediment Formation in Catalytically Cracked Distillate Fuel Oils

Cited by 25 publications

References 1 publication

Study of Crude Oil Fouling from Sulfur-Containing Compounds Using High-Resolution Mass Spectrometry

Study of Crude Oil Fouling from Sulfur-Containing Compounds Using High-Resolution Mass Spectrometry

The Instability of Storage of Middle Distillate Fuels: A Review

Effects of Dodecylbenzenesulfonic Acid on Insolubles Production in Mid-Distillate Diesel Fuel Blends

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