scholarly journals Effect of the experimental conditions on BTX formation from hydrotreated light cycle oil

2020 ◽  
Vol 10 (1) ◽  
pp. 21-34
Author(s):  
Georgina C. Laredo ◽  
Patricia Pérez-Romo ◽  
Ricardo Agueda-Rangel ◽  
Alfonso García-López
Keyword(s):  
Light Cycle ◽  
Experimental Conditions ◽  
Light Cycle Oil ◽  
Cycle Oil

scholarly journals Effect of the catalyst in the BTX production by hydrocracking of light cycle oil

2021 ◽  
Vol 11 (1) ◽  
pp. 19-38
Author(s):  
Georgina C. Laredo ◽  
José L. García-Gutiérrez ◽  
Patricia Pérez-Romo ◽  
Eli H. Olmos-Cerda
Keyword(s):  
Light Cycle ◽  
Model Compounds ◽  
Naphthalene Derivatives ◽  
Experimental Conditions ◽  
Light Cycle Oil ◽  
Gas Formation ◽  
Catalytic Sites ◽  
Benzene Toluene ◽  
Cycle Oil

AbstractCatalysts to produce the important petrochemicals like benzene, toluene, and xylene (BTX) from refinery feedstocks, like light cycle oil (LCO) are reviewed here by covering published papers using model mixtures and real feeds. Model compounds experiments like tetralin and naphthalene derivatives provided a 53–55% total BTX yield. Higher yields were never attained due to the inevitable gas formation and other C9+-alkylbenzenes formed. For tetralin, the best catalysts are those conformed by Ni, CoMo, NiMo, or NiSn over zeolite H-Beta. For naphthalene derivatives, the best catalysts were those conformed by W and NiW over zeolite H-Beta silylated. Real feeds produced a total BTX yield of up to 35% at the best experimental conditions. Higher yields were never reached due to the presence of other types of hydrocarbons in the feed which can compete for the catalytic sites. The best catalysts were those conformed by Mo, CoMo, or NiMo over zeolite H-Beta. Some improvements were obtained by adding ZSM-5 to the support or in mixtures with other catalysts.

Selective hydrogenation of light cycle oil for BTX and gasoline production purposes

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Eli H. Olmos-Cerda ◽  
Georgina C. Laredo ◽  
Patricia Pérez-Romo ◽  
Ricardo Águeda-Rangel ◽  
Alfonso García-López
Keyword(s):  
Aromatic Hydrocarbons ◽  
Space Velocity ◽  
Reaction Rates ◽  
Light Cycle ◽  
Pseudo First Order Reaction ◽  
Experimental Conditions ◽  
Light Cycle Oil ◽  
Liquid Hourly Space Velocity ◽  
Sulfur And Nitrogen Compounds ◽  
Cycle Oil

Abstract The study of the best experimental conditions and catalyst for the hydrogenation (HYD) of light cycle oil (LCO) for upgrading purposes was carried out. The objective was to examine the ability of two commercial hydrotreatment (HDT) catalysts for selective aromatic saturation. The effect of the hydrotreatment operation parameters (temperature, pressure, liquid hourly space velocity, H2/HC ratio) on the sulfur and nitrogen contents and in the saturation of aromatic hydrocarbons was also investigated. The goal was to obtain the highest conversion to mono-aromatic hydrocarbons from this di-aromatic (naphthalene derivatives) type feedstock, and at the same time to get reasonable hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) performance to avoid contaminant hydrocarbons for the next step (usually hydrocracking, HCK). An appropriate hydrotreated product with the highest concentration of mono-aromatic derivatives, a minimum reduction on the total aromatic content, and suitable decrements of sulfur and nitrogen compounds, was achieved using a cobalt-molybdenum supported on alumina catalyst, at 330 °C, 5.5 MPa, and a liquid hourly space velocity of 1.1 h−1. Additionally, the kinetics of the HDA was studied, assuming a lump characterization into tri-, di- and mono-aromatic and aliphatic hydrocarbons, pseudo-first-order reaction rates between these conversions, and thermal losses and diffusional resistances to be undetectable.

scholarly journals Effect of the chemical composition of six hydrotreated light cycle oils for benzene, toluene, ethylbenzene, and xylene production by a hydrocracking process

2021 ◽  
Author(s):  
Georgina C. Laredo ◽  
Ricardo Águeda-Rangel ◽  
Alfonso García-López ◽  
José Luis García-Gutiérrez ◽  
Eli Hazel Olmos-Cerda
Keyword(s):  
Chemical Composition ◽  
Aromatic Compounds ◽  
Light Cycle ◽  
Light Hydrocarbons ◽  
Experimental Conditions ◽  
Light Cycle Oil ◽  
Flame Ionization ◽  
Different Types ◽  
Benzene Toluene ◽  
Cycle Oil

AbstractThe effect of the chemical composition of the hydrotreated light cycle oil (HDT LCO) on the benzene, toluene, ethylbenzene, and xylene (BTEX) production by a hydrocracking (HCK) procedure, is presented. Six different types of HDT LCOs were obtained by submitting two types of LCOs to hydrotreating (HDT) with different catalysts and experimental conditions. The products were analyzed as mono-, di- and tri-aromatic compounds using the supercritical fluid chromatography (SFC) method (ASTM D5186). The HDT LCOs were subjected to HCK with a 50/50 in weight mixture of nickel-molybdenum on alumina (NiMo/Al2O3) and H-ZSM5 (NiMo/H-ZSM5, 50/50) at 375 °C, 7.5 MPa, 1.2 h−1, and 750 m3/m3 H2/Oil. The HCK products were analyzed by gas chromatography with a flame ionization detector (GC-FID) and divided into five groups: gas, light hydrocarbons (LHCs), BTEX, middle hydrocarbons (MHCs), and heavy hydrocarbons (HHCs).The results showed that the BTEX formation ranged from 27.0 to 29.8 wt.% and it did not show a significant dependence on the mono-aromatic (59.9 and 75.6 wt.%), total aromatic (61.1–84.2 wt.%) contents or MHCs conversion (58.3–64.3 wt.%) from the departing HDT LCO feedstock. This result implies that, contrary to previous expectations, the BTEX formation does not directly depend on the amounts of total or mono-aromatic compounds when departing from real feedstocks. A GC-PIONA (paraffin, isoparaffin, olefin, naphthene, aromatic) characterization method (ASTM D6623) for mechanism understanding purpose was also carried out.

Combined mild hydrocracking and fluid catalytic cracking process for efficient conversion of light cycle oil into high-quality gasoline

Fuel ◽  
2021 ◽  
Vol 292 ◽  
pp. 120364
Author(s):  
Peipei Miao ◽  
Xiaolin Zhu ◽  
Yangling Guo ◽  
Jie Miao ◽  
Mengyun Yu ◽  
...  
Keyword(s):  
Catalytic Cracking ◽  
Fluid Catalytic Cracking ◽  
Light Cycle ◽  
High Quality ◽  
Light Cycle Oil ◽  
Efficient Conversion ◽  
Cycle Oil ◽  
Cracking Process

scholarly journals Hydro‐upgrading of light cycle oil‐synthesis of NiMo/SiO2-Al2O3-TiO2 porous catalyst

2021 ◽  
Author(s):  
Wanpeng Hu ◽  
Haiping Zhang ◽  
Min Wang ◽  
Jianglong Pu ◽  
Kyle Rogers ◽  
...  
Keyword(s):  
Light Cycle ◽  
Porous Catalyst ◽  
Light Cycle Oil ◽  
Oil Synthesis ◽  
Cycle Oil

Detailed nature of tire pyrolysis oil blended with light cycle oil and its hydroprocessed products using a NiW/HY catalyst

2021 ◽  
Vol 128 ◽  
pp. 36-44
Author(s):  
Roberto Palos ◽  
Timo Kekäläinen ◽  
Frank Duodu ◽  
Alazne Gutiérrez ◽  
José M. Arandes ◽  
...  
Keyword(s):  
Light Cycle ◽  
Pyrolysis Oil ◽  
Light Cycle Oil ◽  
Cycle Oil ◽  
Detailed Nature

Effect of space velocity on the hydrocracking of Light Cycle Oil over a Pt–Pd/HY zeolite catalyst

2012 ◽  
Vol 95 ◽  
pp. 8-15 ◽  
Author(s):  
Alazne Gutiérrez ◽  
José M. Arandes ◽  
Pedro Castaño ◽  
Martin Olazar ◽  
Astrid Barona ◽  
...  
Keyword(s):  
Zeolite Catalyst ◽  
Space Velocity ◽  
Light Cycle ◽  
Hy Zeolite ◽  
Light Cycle Oil ◽  
Cycle Oil

Reduction of light cycle oil in catalytic cracking of bitumen-derived crude HGOs through catalyst selection

2007 ◽  
Vol 88 (9) ◽  
pp. 833-845 ◽  
Author(s):  
Fuchen Ding ◽  
Siauw H. Ng ◽  
Chunming Xu ◽  
Sok Yui
Keyword(s):  
Catalytic Cracking ◽  
Light Cycle ◽  
Light Cycle Oil ◽  
Cycle Oil ◽  
Catalyst Selection

Separation and Recovery of Bicyclic Aromatic Components in the Light Cycle Oil

2003 ◽  
Vol 38 (1) ◽  
pp. 179-199 ◽  
Author(s):  
Su Jin Kim ◽  
Sang Chai Kim ◽  
Junjiro Kawasaki
Keyword(s):  
Light Cycle ◽  
Light Cycle Oil ◽  
Aromatic Components ◽  
Cycle Oil
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