Fischer‐Tropsch Wax from Renewable Resources as an Excellent Feedstock for the Steam‐Cracking Process

Author(s):  
Adam Karaba ◽  
Jakub Rozhon ◽  
Jan Patera ◽  
Jiří Hájek ◽  
Petr Zámostný
2014 ◽  
Vol 32 (11) ◽  
pp. 1291-1299
Author(s):  
X. Q. Yu ◽  
B. X. Shen ◽  
J. C. Liu ◽  
L. Liu

2014 ◽  
Vol 25 (2) ◽  
pp. 81-84
Author(s):  
Doinita Roxana Cioroiu ◽  
Claudia Irina Koncsag

Abstract According to previous studies on the pyrolysis of vegetable oils, it resulted that the thermal cracking process is prone to produce large yields of ethylene, propylene, hydrogen and methane, comparable with the gas proceeding from the steam cracking of naphtha, but at much lower process temperature, this ensuring important energy savings. The studies are performed on very different raw materials and different reaction conditions, that being why at this moment it is very difficult to predict the products yield. This paper uses an analytical semiempirical model (ASEM) developed at the University of Florida, by applying it to a different raw material. The ASEM model fits very well to our experimental data, obtained at higher temperature but some parameters have to be adjusted. In the end we confirm a set of systemic parameters to be used for the prediction of main products yield proceeding from vegetable oil in an extended range of temperatures.


2018 ◽  
Vol 57 (4) ◽  
pp. 1146-1158 ◽  
Author(s):  
Anand Singh ◽  
Scott Paulson ◽  
Hany Farag ◽  
Viola Birss ◽  
Venkataraman Thangadurai

Author(s):  
Luciana Dutra ◽  
Mateus Vasconcelos ◽  
Anderson Cazumba ◽  
Maria Clara Scaldaferri ◽  
Márcio Henrique Dos Santos Andrade ◽  
...  

ABSTRACT 1,3-butadiene (1,3-BD) is a building block produced mainly as a byproduct of the ethylene steam cracking process. However, due to the growing interest in sustainable technologies, there is also growing interest in manufacturing 1,3-BD from ethanol. For this reason, taking into account that the ethanol-derived 1,3-BD can contain oxygenated contaminants that are difficult to remove, the present manuscript investigates for the first time how the presence of low concentrations of some oxygenates (acetaldehyde, crotonaldehyde, 3-hydroxybutyraldehyde, acetone, water, ethanol, 1,3-butanodiol, 3-buten2-ol, crotyl alcohol, and 1-butanol) in the 1,3-BD monomer can affect polymerization reactions performed with the neodymium versatate catalyst and modify the characteristics of the obtained polybutadiene products. It is shown that the presence of oxygenated compounds can cause inhibitory effects on the course of the polymerization and modify the molar mass distributions and flow properties of the final products, although all analyzed samples presented the characteristic high-cis character of polybutadienes produced with the neodymium versatate catalyst.


2001 ◽  
Vol 25 (4-6) ◽  
pp. 905-911 ◽  
Author(s):  
Marco W.M. van Goethem ◽  
Florian I. Kleinendorst ◽  
Cor van Leeuwen ◽  
Nils van Velzen

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