Thermal Hydrogenation. Transfer of Hydrogen from Tetralin to Cracked Residua

Carlson, C. S.; Langer, Armin; Stewart, Joseph; Hill, Randal M.

doi:10.1021/ie50583a045

Cited by 62 publications

(32 citation statements)

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“…The importance of the use of solvents to mitigate coke formation during the thermal decomposition of petroleum has been recognized for many years (Carlson et al, 1958;Langer et al, 1961Langer et al, , 1962Hill et al, 1968), but their effects have been correctly ascribed to hydrogen donor reactions that have an inhibiting effect on the formation of the molecular species that are prone to phase separation. The separation of the phases depends on the solvent characteristics of the liquid.…”

Section: Thermal Decompositionmentioning

confidence: 99%

Petroleum Asphaltenes - Part 2: the Effect of Asphaltene and Resin Constituents on Recovery and Refining Processes

Speight¹

2004

Oil & Gas Science and Technology - Rev. IFP

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Résumé -Les asphaltènes, composés pétroliers -Partie 2 : L'effet des asphaltènes et des résines sur les procédés de récupération et de raffinage -Le pétrole est un système complexe en équilibre délicat qui dépend des relations entre ces constituants, relations gouvernées par les interactions molécu-laires. Ainsi, des schémas de récupération et de raffinage, en particulier ceux traitant des dépôts asphalté-niques (produits de dégradation ou de réaction des asphaltènes et des résines) peuvent être proposés grâce aux connaissances acquises sur la nature des asphaltènes, des résines et de leurs interactions au sein d'un brut. Abstract

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Section: Thermal Decompositionmentioning

confidence: 99%

Petroleum Asphaltenes - Part 2: the Effect of Asphaltene and Resin Constituents on Recovery and Refining Processes

Speight¹

2004

Oil & Gas Science and Technology - Rev. IFP

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“…[4][5][6] In view of these facts, hydroaromatics have been examined as inhibitors of the deterioration of hydrocarbon products.…”

Section: Introductionmentioning

confidence: 99%

Inhibition of deterioration of plastics by hydroaromatics

Kubo

1992

J of Applied Polymer Sci

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SYNOPSISBased on our previous works concluding that the addition of hydrogen-donating hydroaromatics is effective in inhibiting the deterioration of hydrocarbons, heavy hydroaromatics from petroleum (HHAP) that were produced by hydrogenating highly aromatic heavy oil containing partly hydrogenated condensed aromatic rings were examined by the addition to high-density polyethylene ( P E ) , isotactic polypropylene ( P P ) , and poly (vinyl chloride) ( PVC, MW: 1300) after confirming its prominent hydrogen-donating ability. The following results were obtained by the deterioration tests and melt-flow tests: (1) Clear inhibiting effects could be found on preservation of elongation and tensile strength by the addition of 0.1% and 0.5% of HHAP to PE.

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“…The presence of a material with good solvating power to diminish the possibility of coke formation is preferred. In this respect it is worth noting the reappearance of donor solvent processing of heavy oils [59,100], which has its roots in the older hydrogen donor diluent visbreaking process [7,10,52]. a -Hydrocracking is an extremely versatile process that can be utilized in many different ways.One of the advantages of hydrocracking is its ability to break down high-boiling aromatic stocks produced by catalytic cracking or coking.…”

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confidence: 99%

“…150-2500 psig (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17), and a catalyst contact time of 0.5-1.5 h; up to 1.5 wt% hydro-…”

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Improvement of hydrogen solubility and entrainment in hydrocracker feedstocks. Final technical report

Kabadi¹

1997

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However, any opinions, findings, conclusions or recommendations DE-FG22-92MT92020.expressed herein are those of the author and do not necessarily reflect the views of DOE.The work on thermodynamic model for hydrogen solubility i n hydrocarbons and in hydrocracker feedstocks was performed by the graduate student Mr. Junjie Luo, and the gas solubility apparatus to measure solubility of hydrogen in hydrocarbons . ABSTRACTThe work on this project was initiated on September 1, 1992. The project consisted of two tasks: 1. Development of a thermodynamic model for hydrogen solubility in hydrocarbons and extension of this model to predict solubility of hydrogen in hydrocracker feedstocks at conditions similar to those of hydrocracking operations, and 2. Design and construction of a gas solubility apparatus to measure solubility of hydrogen in hydrocarbons and in hydrocracker feedstocks.The theoretical work proposed was fully accomplished by developing a sophisticated model for hydrogen solubility in hydrocarbons and in hydrocracker feedstocks at advanced temperatures and pressures. Two papers on this work have been submitted to the Journal, Industrial and Engineering Chemistry Research. Reviews of these articles are likely to be available shortly.The proposed experimental work ran into a number of obstacles, especially to get the original and newly designed on-line sampling technique to h c t i o n properly. A number of calibrations and tests for reproducibility were necessary to assure the accuracy of measured data. Although a very well designed gas solubility apparatus was built, not much tim&was left to generate sigmficant hydrogen solubility data. The p h are to use the apparatus in fbture to measure hydrogen solubility r data in liquid fuels to facilitate more efficient design of fie1 conversion systems. .. . PROJECT OBJECTIVES AND SCOPEThe objective of this project is to determine the conditions for the hydrogen-heavy oil feed preparation so as to optimize the yield of hydrocracking reactions. Proper contacting of hydrogen with heavy oil on the catalyst bed is necessary to improve the yields of the hydrocracking reactions.It is most desirable to have the necessary amount of hydrogen available either in the dissolved or in entrained state, so that hydrogen diffusion to the reaction site does not provide rate controlling resistance to the overd rates of hydrocracking reactions. This project proposes to measure solubility and entrainment data for hydrogen in heavy oils at conditions such as i n hydrocrackers, and investigate the improvement of these properties by usage of appropriate additives. Specifically, measurements will be canid out at temperatures up to 300 C and pressures up to 120 atmospheres.Correlations for solubility and entrainment kinetics will be developed fkom the measured data, and a method for estimating the yield of hydrocracking reactions using these correlations will be suggested. Exxon Research and Engineering Company will serve as private sector collaborator providing A&T w i t h test samples ...

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Thermal Hydrogenation. Transfer of Hydrogen from Tetralin to Cracked Residua

Abstract: Crude residua can be thermally cracked to more valuable products by using a reaction diluent such as Tetralin, which gives up hydrogen to cracked residua. The Tetralin is dehydrogenated to naphthalene, and the residua are converted into lower boiling products with little coke and dry gas.

Cited by 62 publications

References 1 publication

Petroleum Asphaltenes - Part 2: the Effect of Asphaltene and Resin Constituents on Recovery and Refining Processes

Petroleum Asphaltenes - Part 2: the Effect of Asphaltene and Resin Constituents on Recovery and Refining Processes

Inhibition of deterioration of plastics by hydroaromatics

Improvement of hydrogen solubility and entrainment in hydrocracker feedstocks. Final technical report

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