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Desulfurization of Crude Oil by Laboratory Developed Multipumping Flow Injection Analysis System with Optimization by Response Surface Methodology

Hadi Ahmed Abdulrazzaq, Ali Ali Abdulkhabeer, Khathi Mohammed Turki

Journal of Ecological Engineering

2023

Vol. 24, nr 2

328--339

Sour crude oil is the crude oil that contains a high level of sulfur impurity. It can be toxic and corrosive. Before this lower-quality crude can be processed into other crude oil derivatives, the sulfur content must be reduced, raising the processing cost. A homemade semi-automated multipumping flow analysis system was constructed, consisting of several parts available on the local markets and at low economic costs to decrease the sulfur content of crude oil samples collected. The central composite design (CCD) and response surface methodology (RSM) have been used for modeling and optimization. The effects of the operational parameters, including polar and nonpolar solvent types, solvent flow rates (10–40 ml/min), mixing coil lengths (120–200 min), temperature (30–60 °C), and solvent entry time to the system (0–60 sec) were studied. Experimental and theoretical applications were made to determine the optimal sulfur content, which came out to be 1.438 and 1.395 wt.%, respectively. This system evaluated the effectiveness of the sulfur removal content for actual heavy crude oil by experimentally and theoretically to be 65.73 and 66.75% respectively. The semi-automated system was applied successfully to reduce the sulfur content in a highly sensitive and accurate way.

Odsiarczanie stali za pomocą wdmuchiwania proszku (CaO) w procesie obróbki pozapiecowej stali

Jochymczyk D., Warzecha M., Jowsa J., Karwala P.

Hutnik, Wiadomości Hutnicze

2013

Vol. 80, nr 5

296--299

Artykuł przedstawia wyniki badań przemysłowych dotyczących procesu odsiarczania stali za pomocą wdmuchiwania proszku CaO, podczas obróbki stali na stanowisku pieca kadziowego (PK). Badania przeprowadzono na kadzi stalowniczej o pojemności nominalnej 100 Mg ciekłej stali. Przedstawiono charakterystyki zmiany zawartości siarki w funkcji czasu wytopu, dla kontrolowanych wytopów wybranych gatunków stali. Ponadto określono potencjalne możliwości odsiarczania stali za pomocą wdmuchiwania proszku CaO dla analizowanych wytopów. Analizę termodynamiczną procesu odsiarczania przeprowadzono z wykorzystaniem programu FactSage.

This paper presents the results of industrial investigations on steel desulfurization process using powder injection (CaO), during steel production process at ladle furnace (LF) station. The study was performed at industrial ladle with nominal capacity of 100 Mg of liquid steel. The characteristic of the sulfur content changes in time have been obtained, for selected grades of steel melts. Furthermore the potential for desulfurization of steel with CaO powder injection was estimated. Thermodynamic analysis of the desulfurization process was performed with using FactSage.