Removal of refractory sulfur and aromatic compounds from straight run gas oil using solvent extraction

Kumar, Sunil; Srivastava, Vimal Chandra; Nanoti, S. M.; Nautiyal, B. R.; Siyaram, Siyaram

doi:10.1039/c4ra05841k

Cited by 18 publications

(23 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The initial and final boiling points of SRGO were 222 °C and 380 °C, respectively. More detailed physicochemical properties of SRGO are reported in a previous publication . N ‐ N ‐dimethyl formamide (DMF: 99.5 %, Merck) was used as an extraction solvent.…”

Section: Methodsmentioning

confidence: 99%

“…The range and level of parameters were decided considering the effect of these parameters on sulphur removal and yield of ESRGO in our previous studies, and considering the energy requirement for solvent recovery from extract phase for its reuse. Some preliminary experiments were also performed before deciding the range of the parameters.…”

Section: Methodsmentioning

confidence: 99%

“…This effect became increasingly pronounced with an increase in degree of sulphur removal requirement due to competitive adsorption among poly‐aromatics, nitrogen, and sulphur compounds and thus equilibrium limitation. Solvent extraction can remove the poly‐aromatics, nitrogen, and refractive sulphur compounds to a large extent and thus seems to be one of the best choices to facilitate a cost‐effective and energy‐efficient deep desulphurization integrated process by drastic reduction in severity of operating conditions …”

Section: Introductionmentioning

confidence: 99%

“…Optimization of operating conditions using a sequential approach does not take care of mutual interaction of variables. In the solvent extraction process, a change in operating conditions affects the degree of desulphurization and yield of ESRGO in the reverse direction . Zhao et al reported optimization of operating conditions of a single stage batch extraction process for desulphurization and yield.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Desulphurization of gas oil in a packed bed extractor: Optimization of operating parameters for simultaneous maximization of efficiency and yield by desirability approach

Kumar

Srivastava²,

Nanoti

et al. 2016

Can J Chem Eng

Self Cite

View full text Add to dashboard Cite

A full factorial central composite design (CCD) method was used to design the experiments for extractive desulphurization of straight run gas oil (SRGO) containing 0.013 g/g (1.3 wt%) sulphur in a packed bed extractor using N‐N‐dimethyl formamide (DMF) as solvent. The operational parameters, namely water concentration (WC) in main solvent, solvent‐to‐feed ratio (S/F), and extraction temperature (TE) which affect the sulphur removal and yield were used as input variables in design of experiments. Considering the trade‐off between sulphur removal and yield, multi‐response optimization with a desirability function approach has been used to estimate the optimized value of these operating parameters so as to maximize sulphur removal and yield of extracted straight run gas oil (ESRGO). Optimum values of selected variables were: water content in solvent = 2.91, solvent‐to‐feed ratio = 1.70, and extraction temperature = 46.4 °C. At the maximum desirability value, ESRGO yield and percent sulphur removal were 81.67 and 60.53 %, respectively. Since importance of sulphur removal and yield would depend on the secondary process to be selected for reducing the sulphur to 50–10 ppm, an analysis of goal importance effect on the optimized value of operational parameters for maximum desirability was also presented and discussed.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Desulphurization of gas oil in a packed bed extractor: Optimization of operating parameters for simultaneous maximization of efficiency and yield by desirability approach

Kumar

Srivastava²,

Nanoti

et al. 2016

Can J Chem Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…The success of commercial process depends on the performance of the solvent during the extraction process. Selection of solvent for separation of a specific compound from a mixture depends on its various properties . Experimental evaluations of solvents for sulfur and aromatic removal from gas oil is extensively time and resource consuming in comparison to computational methods.…”

Section: Introductionmentioning

confidence: 99%

Solvent evaluation for desulfurization and denitrification of gas oil using performance and industrial usability indices

et al. 2015

Self Cite

View full text Add to dashboard Cite

A new strategy for screening of solvents for sulfur, nitrogen, and aromatic compounds removal from gas oil is presented. This ranking is based on comparative assessment of solvents' capacity, selectivity, performance, and newly defined industrial usability indices. Twenty eight solvents comprising of six most widely used industrially proven conventional solvents and 22 imidazolium-based ionic liquids solvents were selected to illustrate the strategy. The solvents were ranked for removal of sulfur compounds namely benzothiophene, dibenzothiophene and their alkylated derivatives, and nitrogenous compounds namely quinoline, indole and carbazole from gas oil. Performance index (P I ) which combines the effect of both capacity and selectivity seems to be better index than individual capacity and selectivity indices to rank the solvents. Industrial usability index (S IUI ) of solvents which includes P I and process complexity factor for solvent recovery section seems more practical and realistic criteria for solvent assessment.

show abstract

Screening of Organic Solvents for Separation of Thiophene and Iso-octane: Density Functional Theory and Molecular Dynamic Simulations

Sistla

Singh

2022

Advances in Chemical, Bio and Environmental Engineering

View full text Add to dashboard Cite

Removal of refractory sulfur and aromatic compounds from straight run gas oil using solvent extraction

Abstract: Extraction of sulfur and polyaromatic impurities from straight run gas oil studied using performance factor combining sulfur removal and yield.

Cited by 18 publications

References 13 publications

Desulphurization of gas oil in a packed bed extractor: Optimization of operating parameters for simultaneous maximization of efficiency and yield by desirability approach

Desulphurization of gas oil in a packed bed extractor: Optimization of operating parameters for simultaneous maximization of efficiency and yield by desirability approach

Solvent evaluation for desulfurization and denitrification of gas oil using performance and industrial usability indices

Screening of Organic Solvents for Separation of Thiophene and Iso-octane: Density Functional Theory and Molecular Dynamic Simulations

Contact Info

Product

Resources

About