Separation of normal paraffins from petroleum fractions by adsorption on 5A molecular sieves

Al‐Ameeri, Rasheed S.; Owaysi, Fathi

doi:10.1021/i300016a025

Cited by 4 publications

(1 citation statement)

References 5 publications

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“…However, a problem with the use of this method is that the adduct takes place in aqueous or alcoholic solution, making the method relatively complicated, usually unreliable, and often involves difficulty controlling the adduction rate (1). Nonnormal compounds, such as alkylbenzene, form adducts with urea, contributing to the impurities present in the separated n-paraffins from petroleum feedstocks (2).…”

Section: Introductionmentioning

confidence: 99%

Separation ofn-Paraffins from Kerosene-Range Feedstock by Adsorption on Fixed-Bed Urea

Hassan¹,

Al‐Ameeri²,

Oweysi³

1994

Separation Science and Technology

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Experimental breakthrough curves have been obtained for n-paraffins from kerosene-range feedstocks on fixed-bed urea. The feedstocks used were unified heavy kerosene, straight-run kerosene, and naphtha-kerosene blend with initial n-paraffin contents of 29.31,31.87, and 34.71 wt%, respectively. The breakthrough curves were measured in the temperature range 283-303 K and the feed flow rates 0.8-2.5 cm3/min. The dynamic parameters for adsorption, such as the height of the mass transfer zone, the dynamic capacity, and the column efficiency, were determined from experimental breakthrough curves. The results from this study indicated that the n-paraffin molecules from unified heavy kerosene were more strongly adsorbed than those from straight-run kerosene or naphtha-kerosene blend, thereby revealing that n-paraffin adsorption on urea increased with the molecular length of the hydrocarbon. The values of the estimated apparent diffusion coefficients for n-paraffins from naphtha-kerosene blend ranged from 3.28 x cmZ/s at 283 K to 5.06 X lo-'' cm2/s at 303 K.

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Section: Introductionmentioning

confidence: 99%

Separation ofn-Paraffins from Kerosene-Range Feedstock by Adsorption on Fixed-Bed Urea

Hassan¹,

Al‐Ameeri²,

Oweysi³

1994

Separation Science and Technology

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Mathematical Modeling of a Simulated Moving‐Bed Adsorption Process: Parex^™ Technology as a Case Study

Rezazadeh

Esfahani²,

Rahimi

et al. 2015

Chem Eng & Technol

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A simplified dynamic mathematical model for a simulated moving‐bed adsorption process is presented. The model is adopted to simulate the separation process of p‐xylene from the other 8‐carbon aromatics by means of the Parex™ technology. Operating conditions and the moving‐bed structure for a commercial plant were used and the performance of the unit was simulated. The model results are in good agreement with the findings of similar existing studies. Comparison of the results of this simplified model with those obtained by other researches indicates a considerable decrease in central processing unit (CPU) time.

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Optimal separation of n‐paraffins from Kuwait kerosene using a molecular sieve adsorbent

Al-Damkhi

Al‐Ameeri

Jeffreys

et al. 1987

J of Chemical Tech & Biotech

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A study has been made of the vapour-phase adsorptive separation of n-alkanes from Kuwait kerosene using zeolite molecular sieves (LMS-5Afractional ability of adsorbent within the MTZ to adsorb additional solute (found by calculating the area above the breakthrough curve as in Fig. 3) length of dead, or unused, adsorbent bed (m) effective efficiency of the adsorbent column (%) the dynamic capacity of the adsorbent (g n-paraffin 1OOg-' zeolite) concentrations of n-paraffin before and after adsorption (wt %) amount of solution and of adsorbent respectively (g)

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Separation of normal paraffins from petroleum fractions by adsorption on 5A molecular sieves

Cited by 4 publications

References 5 publications

Separation ofn-Paraffins from Kerosene-Range Feedstock by Adsorption on Fixed-Bed Urea

Separation ofn-Paraffins from Kerosene-Range Feedstock by Adsorption on Fixed-Bed Urea

Mathematical Modeling of a Simulated Moving‐Bed Adsorption Process: Parex^™ Technology as a Case Study

Optimal separation of n‐paraffins from Kuwait kerosene using a molecular sieve adsorbent

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Separation of normal paraffins from petroleum fractions by adsorption on 5A molecular sieves

Cited by 4 publications

References 5 publications

Separation ofn-Paraffins from Kerosene-Range Feedstock by Adsorption on Fixed-Bed Urea

Separation ofn-Paraffins from Kerosene-Range Feedstock by Adsorption on Fixed-Bed Urea

Mathematical Modeling of a Simulated Moving‐Bed Adsorption Process: Parex™ Technology as a Case Study

Optimal separation of n‐paraffins from Kuwait kerosene using a molecular sieve adsorbent

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Product

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Mathematical Modeling of a Simulated Moving‐Bed Adsorption Process: Parex^™ Technology as a Case Study