Hydrocracking of Maya crude oil in a slurry-phase reactor. I. Effect of reaction temperature

AbstractIn recent years, polymeric additives have received considerable attention as a wax control approach to enhance the flowability of waxy crude oil. Furthermore, the satisfactory model for predicting maximum yield in free radical polymerisation has been challenging due to the complexity and rigours of classic kinetic models. This study investigated the influence of operating parameters on a novel synthesised polymer used as a wax deposition inhibitor in a crude oil pipeline. Response surface methodology (RSM) was used to develop a polynomial regression model and investigate the effect of reaction temperature, reaction time, and initiator concentration on the polymerisation yield of behenyl acrylate-co-stearyl methacrylate-co-maleic anhydride (BA-co-SMA-co-MA) polymer by using central composite design (CCD) approach. The modelled optimisation conditions were reaction time of 8.1 h, reaction temperature of 102 °C, and initiator concentration of 1.57 wt%, with the corresponding yield of 93.75%. The regression model analysis (ANOVA) detected an R2 value of 0.9696, indicating that the model can clarify 96.96% of the variation in data variation and does not clarify only 3% of the total differences. Three experimental validation runs were carried out using the optimal conditions, and the highest average yield is 93.20%. An error of about 0.55% was observed compared with the expected value. Therefore, the proposed model is reliable and can predict yield response accurately. Furthermore, the regression model is highly significant, indicating a strong agreement between the expected and experimental values of BA-co-SMA-co-MA yield. Consequently, this study’s findings can help provide a robust model for predicting maximum polymerisation yield to reduce the cost and processing time associated with the polymerisation process.

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Prediction of Sulfur Content, API Gravity, and Viscosity Using a Continuous Mixture Kinetic Model for Maya Crude Oil Hydrocracking in a Slurry-Phase Reactor

Energy & Fuels ◽

10.1021/ef2005942 ◽

2011 ◽

Vol 25 (8) ◽

pp. 3605-3614 ◽

Cited By ~ 5

Author(s):

Hector J. Martinez-Grimaldo ◽

Juan C. Chavarria-Hernandez ◽

Jorge Ramirez ◽

Rogelio Cuevas ◽

Hugo Ortiz-Moreno

Keyword(s):

Kinetic Model ◽

Crude Oil ◽

Sulfur Content ◽

Slurry Phase ◽

Continuous Mixture

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Synthesis and Preparation of Desulfurization Concerned Naphthenic Acid Type Ionic Liquid

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.670-671.224 ◽

2014 ◽

Vol 670-671 ◽

pp. 224-228

Author(s):

Qiang Wang ◽

Guo Bi Li ◽

Peng Cheng ◽

Shi Dong Wang ◽

Shu Liang Zang

Keyword(s):

Ionic Liquid ◽

Ionic Liquids ◽

Reaction Time ◽

Crude Oil ◽

Reaction Temperature ◽

Naphthenic Acid ◽

Process Conditions ◽

Liquid Density ◽

Physical Measurements ◽

Acid Type

This paper describes the types and characteristics of ionic liquids, synthesis and application of ionic liquids in chemical and environmental applications, and naphthenic acid corrosion problems and research on ionic liquids are organically combined together, using properties, good stability and easy separating from crude oil, of ionic liquid generated by imidazole and naphthenic acid, exploring the ionic liquid deacidification process conditions and acid removal effect. The naphthenic acid and imidazole react in acetone solvent, synthesis a series of ionic liquids in different reaction ratio, reaction temperature, reaction time and stirring speed conditions,makesome physical measurements and calculation of the yield of these ionic liquids and. The results show that, in naphthenic acid and imidazole molar ratio of 1:1, reaction temperature 70°C, reaction time 7h, stirring speed 400R / min, stand half hour after reaction, the yield of naphthenic acid type ionic liquid is maximum, namely, the deacidification effect is best. At the same time measured in the ionic liquid density is 1.179g / mL, and pH is 5.8. Obtained optimum synthesis condition of naphthenic acid type ionic liquid, greatly improving the deacidification rate of high acid crude oil, more importantly, the method does not cause any pollution to the environment.

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Effect of reaction temperature and time on the products and asphaltene dispersion stability in slurry-phase hydrocracking of vacuum residue

Fuel ◽

10.1016/j.fuel.2018.06.113 ◽

2018 ◽

Vol 234 ◽

pp. 305-311 ◽

Cited By ~ 9

Author(s):

Suk Hyun Lim ◽

Kang Seok Go ◽

Nam Sun Nho ◽

Jae Goo Lee

Keyword(s):

Reaction Temperature ◽

Dispersion Stability ◽

Vacuum Residue ◽

Slurry Phase

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Partial Upgrading of Heavy Crude Oil by Slurry-Phase Hydrocracking with Analytical Grade and Ore Catalysts

Energy & Fuels ◽

10.1021/acs.energyfuels.6b01648 ◽

2016 ◽

Vol 30 (12) ◽

pp. 10117-10125 ◽

Cited By ~ 14

Author(s):

Alexander Quitian ◽

Jorge Ancheyta

Keyword(s):

Crude Oil ◽

Heavy Crude Oil ◽

Slurry Phase ◽

Heavy Crude

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Studies on pyrolytic conversion of waste plastic carry bags into plastic crude oil

Journal of Applied and Natural Science ◽

10.31018/jans.v9i4.1494 ◽

2017 ◽

Vol 9 (4) ◽

pp. 2101-2104

Author(s):

B. Prabha ◽

D. Ramesh ◽

S. Kamaraj

Keyword(s):

Crude Oil ◽

Reaction Temperature ◽

Oil Recovery ◽

Calorific Value ◽

Coconut Shell ◽

Pyrolysis Process ◽

Modern Life ◽

Waste Plastic ◽

Heating Source ◽

Plastic Wastes

The utilization of plastic carry bags in our modern life is increasing every year and also increasing pressure on safe disposal of these bags. Worldwide the disposal of these kinds of plastic wastes is becoming serious issue due to their non-degradable nature. The main aim of this study is to exploit the potential of waste plastic carry bags for the production of plastic crude oil by using non-electric pyrolytic unit. The heat required for pyrolysis process supplied from biomass gas stove and coconut shell used as combustible fuel. To optimize the heating conditions for higher plastic crude oil recovery, different quantities of coconut shell were utilized and the maximum recovery of plastic crude oil was recorded. The yield of crude oil ranged from 34.5 to 40.7 per cent for the reaction temperature ranged from 457 to 517 °C. For 4 kg fuel supplied as heating source, the crude oil recovered was 40.7 per cent at a reaction temperature of 486 oC and residence time of 58 min. The calorific value of the waste plastic carry bags and plastic crude oil was found to be 34.4 and 38.6 MJ/kg, respectively.

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