International Journal of Chemical Engineering and Analytical Science
Articles Information
International Journal of Chemical Engineering and Analytical Science, Vol.1, No.1, Sep. 2016, Pub. Date: Jul. 27, 2016
The Parametric Evaluation of De-mercaptanization Process; Introduction of Novel Method
Pages: 60-65 Views: 2630 Downloads: 866
Authors
[01] Edris Fotoohi, Department of Chemical Engineering, Sirjan Branch, Islamic Azad University, Sirjan, Iran.
[02] Farshad Farahbod, Department of Chemical Engineering, Firoozabad Branch, Islamic Azad University, Firoozabad, Iran.
Abstract
The suphure is a main corrosive component in the up steam and downstream process. The sulphur in hydrocarbon cuts has different forms such as element sulphur (S) (H2S, COS, CS2 RSH (mercaptans), thiophene, and other sulphur compounds. The nano catalysts can sweet the valuable fuels such as LPG. The LPG as liquefied gas has economic valuable and must participate in the desulphurization process. Meanwhile, the nano catalysts are adapted in this paper to vanish mercaptan as the side element, corrosive and pyrophoric contaminant. So, the optimum operating conditions and reactor characteristics for mercaptan removal with ZnO nano catalyst are investigated experimentally, in this study. Results show, the changes in diameter of catalyst in the range of 50 nm to 55 nm at heights of 11 cm to 13 cm reveal the effect of shapes of nanocatalyst in the amounts of C/C0. Results show, the smaller particle in diameter apparently provides higher porosity in catalytic bed and also higher effective mass transfer area. This may indicate the higher amount of C/C0 using nanoparticle with diameter of 55 nm. But, the diameter of 35 nm shows somehow higher amount of C/C0 with all height of bed than diameter of 40 nm, 45 nm and 50 nm.
Keywords
Flow, Experimental, De-mercaptanization, RSH, COS
References
[01] Yuxiao Niu, Mingyang Xing, Baozhu Tian, Jinlong Zhang, 2012, “Improving the visible light photocatalytic activity of nano-sized titanium dioxide via the synergistic effects between sulfur doping and sulfation,’’ Applied Catalysis B: Environmen., 115–116 (5) pp. 253-260.
[02] Corrie L., Carnes and Kenneth J. Klabunde, 2002, “Unique Chemical Reactivities of Nanocrystalline Metal Oxides toward Hydrogen Sulfide,’’ Chem. Mater., 14 (4) pp. 1806-1811.
[03] Mumin Rao, Xiangyun Song, Elton J. Cairns, 2012, ‘’Nano-carbon/sulfur composite cathode materials with carbon nanofiber as electrical conductor for advanced secondary lithium/sulfur cells,’’ J. Power Source., 205 (1), pp. 474-478.
[04] Yongguang Zhang, Yan Zhao, Aishuak Konarov, Denise Gosselink, Hayden Greentree Soboleski, P. Chen, 2013, “A novel nano-sulfur/polypyrrole/graphene nanocomposite cathode with a dual-layered structure for lithium rechargeable batteries,’’ J. Power Source., 241 (1), pp. 517-521.
[05] Hosseinkhani M., Montazer M., Eskandarnejad S., Rahimi M. K., 2012, “Simultaneous in situ synthesis of nano silver and wool fiber fineness enhancement using sulphur based reducing agents,’’ Colloids and Surfaces A: Physicochem. Eng. Aspect., 415 (5), pp. 431-438.
[06] Konstantinos C. Christoforidis, Figueroa Santiago J. A., Fernández-García Marcos, 2012, “Iron–sulfur codoped TiO2 anatase nano-materials: UV and sunlight activity for toluene degradation,’’ Applied Catalysis B: Environment., 117–118 (18), pp. 310-316.
[07] Vishal Balouria, Arvind Kumar, S. Samanta, A. Singh, A. K. Debnath, Aman Mahajan, R. K. Bedi, D. K. Aswal, S. K. Gupta, 2013, “Nano-crystalline Fe2O3 thin films for ppm level detection of MERCAPTAN,’’ Sensors Actuators B: Chemical, 181, pp. 471-478.
[08] Eow, D., John, S., 2002, “Recovery of sulfur from sour acid gas: A review of the technology Environmental Progress,’’ American Institute Chem. Eng., 21, pp. 143-162.
[09] Habibi R., Rashidi A. M., Towfighi Daryan J., Alizadeh A., 2010,"study of the rod –like and spherical nano ZnO morphology on Mercaptan removal from natural gas". Appl. Surf. Sci., 257, pp. 434-439.
[10] Novochimskii I. I., Song CH., Ma X., Liu X., Shore L., Lampert J., Farrauto R. J., 2004, "Low temperature MERCAPTAN removal from steam containing gas mixtures with ZnO for fuel cell application. 2. wash- coated monolith". Ene. Fuel., 18, pp. 584-589.
[11] Novochimskii II., Song CH., Ma X., Liu X., Shore L., Lampert J., Farrauto R. J., 2004, "Low temperature MERCAPTAN removal from steam containing gas mixtures with ZnO for fuel cell application. 1. ZnO particles and extrudates". Ene. Fuel., 18, pp. 576-583.
[12] Arthour L. K., Richard B., 1997, "Gas purification", Nielsen edition.
[13] Habibi R., Towfighi Daryan J., Rashidi A. M., 2009, Shape and size-controlled fabrication of ZnO nanostructures using noveltemplates, J. Exp. Nanosci. 4 (1) 35-45.
[14] Farahbod Farshad, Bagheri Narges, Madadpour Fereshteh, Effect of Solution Content ZnO Nanoparticles on Thermal Stability of Poly Vinyl Chloride, Journal of Nanotechnology in Engineerin and Medicine, DOI: 10.1115/1.4025209, In press.
600 ATLANTIC AVE, BOSTON,
MA 02210, USA
+001-6179630233
AIS is an academia-oriented and non-commercial institute aiming at providing users with a way to quickly and easily get the academic and scientific information.
Copyright © 2014 - American Institute of Science except certain content provided by third parties.