Indian Institute Of Petroleum (IIP)
Present abstract] [Disguise abstract] Abstract: In this paper, impact of asphaltenes on optical textures of semi-coke and pitches prepared from vacuum residues (VRs) and their deasphalted oils (DAOs) throughout heat treatment at a temperature 390 °C was investigated. Coal Carbonization Equipment Optical microscopic image analysis shows that VR-1 which contains 10.44 wt% asphaltenes produces semi-coke VR-390-1 having 29 vol% mesophase content and circulate kind coalescence. On the other hand, VR-2 which comprises 24.57 wt% asphaltenes produces semi-coke VR-390-2 having 27 vol% mesophase content material and mosaic kind texture. Further, it was noticed that deasphalting of these vacuum residues enhance the optical textures in addition to enhance the mesophase content in DAO-390-1 (48 vol%) and DAO-390-2 (36 vol%) semi-cokes. Moreover, we have now also concluded that asphaltenes molecules affect the growth of mesophase improvement in an opposed manner. In this study, we have now prepared pitches from clarified oil (CLO) and aromatic extract (AE) having very low asphaltenes content material at temperatures 380 and 390 °C respectively with out and with the addition of 3% asphaltenes. Optical microscopic photographs of those pitches present that mesophase contents were decreases with the addition of asphaltenes externally. In addition, semi-cokes and pitches had been also characterized by utilizing elemental analysis, Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and thermogravimetric analyses (TGA). The examine revealed that asphaltenes either present within the feed inventory or externally added within the feed stock play a negative role on mesophase growth in addition to on coke texture.
Article · Jan 2016 · Gasoline
– Source Obtainable from: Kirtika Kohli
Article: Impact of Tremendous Acid and Heteropolyacid on Residue Hydroprocessing
Ravindra Prajapati · Kirtika Kohli · S.Ok. Maity
[Present abstract] [Disguise abstract] Abstract: Production of extremely branched aromatics and saturates from conversion of vacuum residue is of curiosity for manufacturing of excessive octane gasoline, gasoil, jet fuels and lubricants. In this examine vacuum residue is hydroprocessed with superacid and hetropolyacid based catalysts at severe response conditions: Four hundred-440pC response temperature, one hundred bar of hydrogen pressure, 4-eight hours of response run time. A moderate conversion degree, over 85% achieved with Mo-superacid at given reaction conditions. Upto 90% residue conversion and hydrotreating activities like HDM, HDS and HDAsp observed with Mo primarily based heteropolyacid. Mo primarily based acid catalysts have superiority over W primarily based catalysts. Product distribution indicated that the majority part of liquid yield contain gasoil than gasoline.
Full-text obtainable · Article · Dec 2015 · Procedia Earth and Planetary Science
Article: Selective production of green gasoline by catalytic conversion of Jatropha oil
Sandeep Okay. Saxena · Nagabhatla Viswanadham
[Present summary] [Cover summary] Summary: A catalytic process for value addition of bio-oil derived from the Jatropha curcas plant via the manufacturing of inexperienced gasoline has been described. Four zeolite based mostly catalysts mini crude oil refinery plant cost possessing totally different porosity and acidity have been ready by using Ultrastable Y (HY), Beta (BEA), micro-crystalline ZSM-5 (MZ) and nano-crystalline ZSM-5(NZ) zeolites. The textural properties of the samples have been characterized by XRD, SEM, Guess surface area, pore volume, pore size distribution and micro-calorimetric ammonia adsorption studies. These catalysts have been exploited for the manufacturing of inexperienced gasoline appropriate for gasoline purposes. Amongst the assorted catalysts, the nano-crystalline ZSM-5 synthesized within the laboratory exhibited excellent catalytic properties equivalent to average acidity and stacking order of mesoporosity (which is absent in microcrystalline ZSM-5) responsible for the production of gasoline with as high as 77.4% selectivity and ninety five analysis octane number (RON). The catalyst additionally exhibited enhanced time-on-stream stability supported by coke resistance capability (derived from TGA evaluation of spent catalyst) when compared with the other zeolites within the studied interval of mini crude oil refinery plant cost 20 h. The current examine gives a brand new catalytic process for manufacturing of gasoline from J. curcas oil for biorefinery.
Article · Mar 2014 · Gasoline Processing Expertise
Dehra Dūn, India
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