Two stages light gasoil hydrotreating for low sulfur diesel production

Ramírez, Sergio; Cabrera, C. Sánchez; Aguilar, Carlos E. Del Angel; Vaca, Heriberto; Vega, P. de la; Agueda, R.; García, Alfredo; Santiago, Rocío; Schacht, P.

doi:10.1016/j.cattod.2004.07.045

Cited by 8 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 The aromatic nitrogen and sulfur atom posses sterical hindrance. 17,18 Therefore, the active site of such compounds can be enhanced by choosing a solvent having an opposite behaviour in the mixture. In contrast to organic solvents, ionic liquids (ILs) have enormous advantages with respect to green chemical processes.…”

Section: Introductionmentioning

confidence: 99%

Aromatic sulfur‐nitrogen extraction using ionic liquids: Experiments and predictions using an a priori model

Ramalingam

Banerjee

2013

AIChE Journal

View full text Add to dashboard Cite

The tie-line composition of three quaternary system namely 1-ethyl-3-methylimidazolium acetate ( (4) were experimentally determined at 298.15 K. The measured tie-line data were successfully correlated with the nonrandom two liquid and UNIversal QUAsiChemical model prediction which gave less than 1% root mean square deviation (RMSD).[EMIM][MeSO 3 ] looks to be a promising solvent for the simultaneous separation having distribution ratios less than unity for both thiophene and pyridine. The quantum chemical-based conductor like screening model for real solvent (COSMO-RS) model was then used to predict the tie-line composition of quaternary systems. COSMO-RS gave the RMSD for the studied systems to be 8. 41, 8.74, and 6.53% for the ionic liquids, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Aromatic sulfur‐nitrogen extraction using ionic liquids: Experiments and predictions using an a priori model

Ramalingam

Banerjee

2013

AIChE Journal

View full text Add to dashboard Cite

show abstract

“…Produced by thermal catalytic cracking or hydrocracking processes, light gas oil (LGO) contains high amounts of sulfur- and nitrogen-containing compounds. The reactivity, mechanisms, and kinetics of these compounds during the HDS process have been widely studied. − Nevertheless, developing a suitable kinetic model for the design and optimization of a HDS reactor has not been given proper attention. Conventionally, a kinetic model is developed by the discrete or continuous lumping method, in which the petroleum components are lumped on the basis of physical properties, such as boiling points and solubility.…”

Section: Introductionmentioning

confidence: 99%

Development of a Structure-Based Lumping Kinetic Model for Light Gas Oil Hydrodesulfurization

et al. 2017

View full text Add to dashboard Cite

10Adopting the petroleomics concept, significant effort has been made to create extensive databases of 11 molecular structures and chemical and physical properties of complex petroleum mixtures. By 12 collating the available information provided by petroleomics, this study develops a new 13 structure-based lumping kinetic model for hydrodesulfurization (HDS) of light gas oil. An advanced 14 experimentation system, analytical technique, and computer software tool are employed to generate 15 the necessary data. The model contains 16 structure-based lumps, each of which includes species 16 having similar structure and reactivity. The model allows for the tracking of changes in molecular 17 structure type of the input and output mixtures during HDS. Its prediction capability is validated over 18 a wide range of HDS operation temperatures (200°C-375°C). Petroleomics has emerged as a new field in petroleum technology. 17,18 In petroleomics, all petroleum 35 components are characterized and their properties and reactivity are correlated with the composition 36 data. The application of petroleomics promises a variety of opportunities for the efficient use of both 37 conventional and unconventional crude oils, the elimination of control and operation problems, and 38 the reduction of production costs. The advanced analytical technique Fourier Transform Ion 39 Cyclotron Resonance Mass Spectrometry (FT-ICR MS) has allowed for the characterization of 40 thousands of molecular structures 19 . New computer software tool KMT (Kinetic Modeler's Toolbox) 41 has stimulated the development of molecular-level kinetic models. 20-26 By combining a high 42 throughput experimentation (HTE) system, FT-ICR MS and KMT, Japan Petroleum Energy Center 43 has successfully developed a petro-informatics platform (PIP) 27 , which comprises large databases of 44 the elemental compositions, physical properties, and reactivity behaviors of different petroleum 45 fractions. Froment and co-workers developed single-event concept for building detail kinetic models 46 capable of describing the chemistry transformation of each molecule involved in the feedstocks. 28,29 47 Owing to inclusion of a large number of elementary reactions and chemical species, such 48 molecular-level kinetic models cannot be applied to the design, simulation, and optimization of 49 refinery reactors which are frequently performed via process simulators. 50 This study aims to develop a new structure-based lumping kinetic model for HDS of LGO (LGO-51 HDS). The chemical species involved in the feedstock and product mixtures are lumped in light of 52 types of molecular structures. To build the model, data are obtained from different sources: HTE, 53 FT-ICR MS, and KMT. The model is developed through a new approach that includes the following 54 steps: (1) analyzing elementary reaction rates to reduce unimportant reactions; (2) grouping reactant 55 species into lumps and defining the lump-based reaction network; (3) building a lump-based reaction 56 kinetic model; and (4) estimating ...

show abstract

“…Most of the refineries in the world are able to produce diesel oil with above 70 ppm of nitrogen [1] and 500 ppm of sulphur [2] by using high hydrogen consumption, large reactor volume, and severe operating conditions [3]. Thus the refinery must remove the aromatic compounds of nitrogen/sulphur such as pyrrole, indole, indoline, carbazole, benzocarbazole, pyridine, quinoline, benzoquinoline, thiophene, benzothiophene, dibenzothiophene, and their derivatives [1,2,4]. Moreover the catalysts having higher activity or selectivity do not interact favourably with such compounds, even at moderate temperatures [5].…”

Section: Introductionmentioning

confidence: 99%

Phase Behaviour of 1‐Ethyl‐3‐methylimidazolium Thiocyanate Ionic Liquid with Catalytic Deactivated Compounds and Water at Several Temperatures: Experiments and Theoretical Predictions

Ramalingam

Banerjee

2011

International Journal of Chemical Engineering

View full text Add to dashboard Cite

Density, surface tension and refractive index were determined for the binary mixture of catalytic deactivated compounds with 1-ethyl-3-methylimidazolium thiocyanate{[EMIM][SCN]}at temperature of (298.15 to 323.15) K. For all the compounds with ILs, the densities varied linearly in the entire mole fraction with increasing temperature. From the obtained data, the excess molar volume and deviation of surface tension and refractive index have been calculated. A strong interaction was found between similar (cation-thiophene or cation-pyrrole) compounds. The interaction of IL with dissimilar compounds such as indoline and quinoline and other multiple ring compounds was found to strongly depend on the composition of IL at any temperatures. For the mixtures, the surface tension decreases in the order of: thiophene > quinoline > pyridine > indoline > pyrrole > water. In general from the excess volume studies, the IL-sulphur/nitrogen mixture has stronger interaction as compared to IL-IL, thiophene-thiophene or pyrrole-pyrrole interaction. The deviation of surface tension was found to be inversely proportional to deviation of refractive index. The quantum chemical based COSMO-RS was used to predict the non-ideal liquid phase activity coefficient for all mixtures. It indicated an inverse relation between activity coefficient and excess molar volumes.

show abstract

Two stages light gasoil hydrotreating for low sulfur diesel production

Cited by 8 publications

References 9 publications

Aromatic sulfur‐nitrogen extraction using ionic liquids: Experiments and predictions using an a priori model

Aromatic sulfur‐nitrogen extraction using ionic liquids: Experiments and predictions using an a priori model

Development of a Structure-Based Lumping Kinetic Model for Light Gas Oil Hydrodesulfurization

Phase Behaviour of 1‐Ethyl‐3‐methylimidazolium Thiocyanate Ionic Liquid with Catalytic Deactivated Compounds and Water at Several Temperatures: Experiments and Theoretical Predictions

Contact Info

Product

Resources

About