scholarly journals Selective thermal cracking of heavy oils. Part 4. Thermal cracking of kuwait atmospheric residue in the presence of hydrogen and nickel supported catalysts.

1987 ◽  
Vol 30 (5) ◽  
pp. 331-336
Author(s):  
Ikusei NAKAMURA ◽  
Kaoru FUJIMOTO ◽  
Hiro-o TOMINAGA
Keyword(s):  
Supported Catalysts ◽  
Thermal Cracking ◽  
Heavy Oils ◽  
Atmospheric Residue

A viscosity-conversion model for thermal cracking of heavy oils

Fuel ◽  
2017 ◽  
Vol 197 ◽  
pp. 82-90 ◽  
Author(s):  
Rosa I. Rueda-Velásquez ◽  
Murray R. Gray
Keyword(s):  
Thermal Cracking ◽  
Heavy Oils ◽  
Conversion Model

Effect of Initiative Additives on Hydro-Thermal Cracking of Heavy Oils and Model Compound

2003 ◽  
Vol 17 (2) ◽  
pp. 457-461 ◽  
Author(s):  
Jie Chang ◽  
Kaoru Fujimoto ◽  
Noritatsu Tsubaki
Keyword(s):  
Model Compound ◽  
Thermal Cracking ◽  
Heavy Oils

A Review of Thermal Cracking, Hydrocracking, and Slurry Phase Hydroconversion Kinetic Parameters in Lumped Models for Upgrading Heavy Oils

2021 ◽  
Author(s):  
Barbara Browning ◽  
Pedro Alvarez ◽  
Tim Jansen ◽  
Maxime Lacroix ◽  
Christophe Geantet ◽  
...  
Keyword(s):  
Kinetic Parameters ◽  
Thermal Cracking ◽  
Heavy Oils ◽  
Slurry Phase ◽  
Lumped Models

Hydro-thermal cracking of heavy oils and its model compound

1998 ◽  
Vol 43 (3-4) ◽  
pp. 273-280 ◽  
Author(s):  
Ming-Gang Yang ◽  
Ikusei Nakamura ◽  
Kaoru Fujimoto
Keyword(s):  
Model Compound ◽  
Thermal Cracking ◽  
Heavy Oils

Thermal cracking of atmospheric residue versus vacuum residue

2018 ◽  
Vol 181 ◽  
pp. 331-339 ◽  
Author(s):  
Thomas Kaminski ◽  
Maen M. Husein
Keyword(s):  
Thermal Cracking ◽  
Vacuum Residue ◽  
Atmospheric Residue

Influence cinétique et chimique d'alcènes sur la pyrolyse d'alcanes: mise au point et nouveaux résultats

1985 ◽  
Vol 63 (11) ◽  
pp. 2869-2884 ◽  
Author(s):  
Francis Billaud ◽  
François Baronnet ◽  
Michel Niclause
Keyword(s):  
Free Radicals ◽  
Double Bond ◽  
Thermal Cracking ◽  
Experimental Results ◽  
Heavy Oils ◽  
Double Bonds ◽  
Thermal Reactions ◽  
Chemical Effects ◽  
General Rules ◽  
Complex Models

On the basis of previously reported, as well as new, experimental results, a review is presented of the kinetic and chemical influences of alkenes on the pyrolysis of alkanes. The results confirm that the addition of free H• atoms to the double bonds of alkenes is not sufficient to explain their inhibiting influence on the pyrolysis of alkanes. On the contrary, our results show that the processes of addition can account for the chemical effects of added alkenes on the pyrolysis of alkanes, namely, the modifications brought to the nature and the ratio of the products formed during the reaction. The results presented here confirm that the addition of alkyl free radicals to the double bond of alkenes does not lead to important chemical effects. The previously reported experimental results (pyrolysis of ethane in the presence of ethylene or propene, the pyrolysis of 2,2-dimethylbutane in the presence of propene, isobutene, or two isopentenes), completed by our new results (pyrolysis of ethane in the presence of isobutene, pyrolysis of isobutane in the presence of ethylene, of propene, of trans-2-butene, or of 2-methyl-2-butene), can lead to very simple general rules, on the basis of which it is possible to explain the results and to predict the modifications (relating to the nature of the products and to their ratios) that will result from the addition of an alkene during the pyrolysis of an alkane at a temperature of 500 °C (773 K). Aside from their fundamental aspects, these observations and their mechanistic consequences could be useful for the preparation of models for these thermal reactions, especially for the simplification of complex models. These observations also explain certain facts observed in industry and can help in solving some of the problems associated with the thermal cracking of heavy oils.

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