Desulfurization of light diesel fuel using chloramine t and polymer supported imidation agent

Dissertant

Fadil, Zaynab Subhi

Thesis advisor

Salih, Najat Jumah
Ibrahim, Niran Khalil

University

University of Technology

Faculty

-

Department

Department of Chemical Engineering

University Country

Iraq

Degree

Master

Degree Date

2010

English Abstract

Adsorption of sulfur compounds on a polymer-supported imitation agent (Sodium N-chloral-polystyrene sulfonamide, PI) at ambient conditions.

The PI was synthesized from poly (styrene-divinylbenzenne) as a starting material.

Its chemical structure was identified and confirmed using FT-IR infrared spectrophotometer.

The activity of the synthesized PI was investigated at first with respect to the removal of DBT from model light oil (n-tetrad cane containing DBT 11 mmol / ⌡ corresponding to 500 ppm sulfur content).

The analysis of the resulting oil obtained after 8 hr.

of reaction in the presence of PI detected the absence of any sulfur compounds.

Moreover, the analysis of the PI recovered after treatment showed an absorption band at 915 cm-1 owing to the S-N bonding which indicates that the DBT removed from the oil is chemically adsorbed on the PI.

Alight oil : the sulfur concentration of commercial hydrocracked diesel obtained from refinery was decreased from 1900 ppm to about 180 ppm (deep desulfurization level).

The desulfurization process using PI is therefore approved to be both effective and energy efficient refining process for light oils.

The effects of initial sulfur concentration in commercial oil (Co = 1900, 12354) ppm and the sorbent dose (Ws = 0.10, 0.20, 0.25, 0.3, 0.36) mg / ⌡ at time = 40 hr.

on the desulfurization efficiency were studied.

The results indicate that the removal efficiency increased with decreasing sulfur concentration and increasing sorbent dose.

The proposed empirical formula that represents the relationship between the desulfurization efficiency and the operating parameters studied was found to Be : Л % = 163582 (ws) 0.52(co) -0.62 R = 0,998 Also the residual sulfur concentration in the treated oil can be estimated from the following Formula : C = 0.0112 (Co) 1.24 (Ws) -0.90 R=0.99974 The results also indicated that the rate of sulfur removal follows a non-linear kinetics model The rate constant, (for Co = 1900 ppm) was found to be equal to 0.2835 (⌡ /mg.h).

Main Subjects

Chemistry

• APA
• MLA
• AMA

Language

English

Data Type

Arab Theses

Record ID

BIM-305142