Ultra-deep desulfurization and denitrogenation of diesel fuel by selective adsorption over three different adsorbents: A study on adsorptive selectivity and mechanism

2006 ◽  
Vol 111 (1-2) ◽  
pp. 74-83 ◽  
Author(s):  
Jae Hyung Kim ◽  
Xiaoliang Ma ◽  
Anning Zhou ◽  
Chunshan Song
Keyword(s):  
Diesel Fuel ◽  
Selective Adsorption ◽  
Deep Desulfurization

Ultra-deep desulfurization of diesel fuel via selective adsorption over modified activated carbon assisted by pre-oxidation

2017 ◽  
Vol 161 ◽  
pp. 422-430 ◽  
Author(s):  
Yongxing Yang ◽  
Guangqiang Lv ◽  
Liangliang Deng ◽  
Boqiong Lu ◽  
Jinlong Li ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Diesel Fuel ◽  
Selective Adsorption ◽  
Modified Activated Carbon ◽  
Deep Desulfurization

Deep desulfurization of diesel fuel by selective adsorption over Ni/Al2O3 and Ni/ZSM-5 extrudates

Fuel ◽  
2012 ◽  
Vol 93 ◽  
pp. 86-91 ◽  
Author(s):  
K.K. Sarda ◽  
A. Bhandari ◽  
K.K. Pant ◽  
Sapna Jain
Keyword(s):  
Diesel Fuel ◽  
Selective Adsorption ◽  
Deep Desulfurization

scholarly journals New Gas-Phase Catalytic Oxidative Processes for Desulfurization of Diesel Fuel

2015 ◽  
Vol 17 (2) ◽  
pp. 119 ◽  
Author(s):  
Z.R. Ismagilov ◽  
M.A. Kerzhentsev ◽  
S.A. Yashnik ◽  
S.R. Khairulin ◽  
A.V. Salnikov ◽  
...  
Keyword(s):  
Gas Phase ◽  
Diesel Fuel ◽  
Ambient Pressure ◽  
Oxidative Desulfurization ◽  
Sulfur Compounds ◽  
Deep Desulfurization ◽  
Oxidative Processes ◽  
Laboratory Reactor ◽  
Sulfur Containing ◽  
Regeneration Processes

<p>An effective gas-phase oxidative desulfurization (ODS) process was proposed. The process was studied in a laboratory reactor with a proprietary catalyst at 300-400 ºС and ambient pressure with model fuels represented by thiophene, dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) dissolved in octane, isooctane or toluene. The reactivity of different sulfur containing molecules in ODS was shown to increase in the sequence: thiophene &lt; DBT &lt; DMDBT. The main sulfur containing product of oxidation of these compounds was SO<sub>2</sub>. During the gas-phase ODS both processes of sulfur species oxidation and processes of their adsorption were observed and studied. Based on the conducted studies, different ODS process designs comprising its integration with adsorption and regeneration processes and with conventional hydrodesulfurization (HDS) process were proposed. One scheme is based on alternating regimes of ODS and catalyst regeneration in two reactors: sulfur is removed from organic feedstock by oxidation and adsorption in one reactor while simultaneous regeneration of the catalyst that has accumulated sulfur  compounds takes place in another reactor. Two other schemes are based on joint use of ODS and HDS. The conventional HDS process is most effective for removal of low-boiling sulfur containing compounds reactive with respect to hydrogen, while removal of refractory sulfur compounds, such as DMDBT is more easily achieved by gas phase ODS. Thus the combination of these processes is expected to be most efficient for deep desulfurization of diesel fuel.</p>

Deep Desulfurization of Diesel Fuel Oxidized with TBHP Coupled with Solvent Extraction Intensified by Ultrasound

2014 ◽  
Vol 910 ◽  
pp. 57-60
Author(s):  
Guo Xian Yu ◽  
Qian Zhong ◽  
Mei Jin ◽  
Jin Huang Wang ◽  
Ping Lu
Keyword(s):  
Solvent Extraction ◽  
Sulfur Content ◽  
Process Parameters ◽  
Diesel Fuel ◽  
Sodium Tungstate ◽  
Oxidative Desulfurization ◽  
Ultrasound Irradiation ◽  
Molar Ratio ◽  
Deep Desulfurization ◽  
Hydrotreated Diesel

Deep desulfurization of a hydrotreated diesel fuel was investigated with TBHP oxidation coupled with solvent extraction intensified by ultrasound. The process parameters for the oxidation desulfurization of diesel fuel, such as the type and dosage of catalyst, co-solvent, ultrasound time, molar ratio of TBHP and sulfur were investigated. The results showed that sulfur content of the hydrotreated diesel fuel was reduced from 140 ppm to 12 ppm with using 1%wt of sodium tungstate as catalyst, 20%wt of methanol as co-solvent during the reaction, reaction temperature at 90°C, ultrasound time for 15 min and TBHP/Sulfur molar ratio of 32, and ultrasound irradiation had the obvious reinforcement in oxidative desulfurization of diesel fuel.

Deep Desulfurization of Diesel Fuel Oxidized with H2O2 Coupled with Solvent Extraction Intensified by Ultrasound

2014 ◽  
Vol 953-954 ◽  
pp. 1135-1138 ◽  
Author(s):  
Guo Xian Yu ◽  
Qian Zhong ◽  
Mei Jin ◽  
Jin Huang Wang ◽  
Ping Lu
Keyword(s):  
Solvent Extraction ◽  
Sulfur Content ◽  
Process Parameters ◽  
Diesel Fuel ◽  
Phosphotungstic Acid ◽  
Oxidative Desulfurization ◽  
Ultrasound Irradiation ◽  
Molar Ratio ◽  
Deep Desulfurization ◽  
Hydrotreated Diesel

Deep desulfurization of a hydrotreated diesel fuel was investigated with H2O2oxidation coupled with solvent extraction intensified by ultrasound. The process parameters for the oxidation desulfurization of diesel fuel, such as the type and dosage of catalyst, co-solvent, ultrasound time, molar ratio of H2O2and sulfur were investigated. The results showed that sulfur content of the hydrotreated diesel fuel was reduced from 140 ppm to 10 ppm with using 2%wt of phosphotungstic acid as catalyst, 20%wt of methanol as co-solvent during the reaction, reaction temperature at 90°C, ultrasound time for 10 min and H2O2/S molar ratio of 16, and ultrasound irradiation had the obvious reinforcement in oxidative desulfurization of diesel fuel.

Deep desulfurization of model gasoline by selective adsorption on Ag+/Al-MSU-S

2010 ◽  
Vol 149 (1-2) ◽  
pp. 138-142 ◽  
Author(s):  
Chunmei Meng ◽  
Yunming Fang ◽  
Lijun Jin ◽  
Haoquan Hu
Keyword(s):  
Selective Adsorption ◽  
Deep Desulfurization
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