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1-Laddha G.S. and T.E. Degaleesan, Transport PHenomena in Liquid-liquid Extractio, 1976.2-Godfrey J.C., Slater M.J., Liquid-liquid Extraction Equipment, 1994.

5-.Bahmanyar H.,.Roy Dean D., Irena C., Dowlin, Kenrick M., Ramlochan, Slater M.J, WeiYu, Studies of Drop Break-up in Liquid-liquid Systems in a Rotating Disc Contactor, Effects ofMass Transfer and Scale-up, Chemical Eng., Technol, 1991.6- Ghalehchian J.S., Slater M.J., A Possible Approach to improve Rotating Disc ContactorDesign Accounting for Drop Breakage and Mass Transfer with Contamination, Dept. ofChemical engineering, University of Bradford, ,Chemical Engineering Journal,1999.7-Suheila CeHreli, Liquid-liquid Equilibria of Ternary Systems(water + carboxylic acid +cumene)at 298.15 K, Engineering Faculty, Istanbul University, Chemical Engineering Depart-ment, 2006.

9-Stephan A.,Schmidt, Martin Simon, Menwer M., Attarakih, Luis Lagar G., hans-jorg Bart.,Droplet Population Balance Modelling Hydrodynamics and Mass Transfer, Chemical Engineer-ing Science, Vol. 61, 2006, pp. 246-256.10-Hans-Jorg Bart, From Single Droplet to Column Design, Tsinghua Science and Technology,Institute of Thermal Process Engineering, Kaiserslautern, 2006.

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1.Ghosal K., and Freeman B. D., Gas Separation using Polymer Membranes: An overview, Polymers forAdvanced Technologies No. 11, 1993,pp.673-697.2.Way D. and Noble R.D, Membrane Handbook, Van Nostrand Reinhold, , 1992.3.Noble R.D., Membrane Separation Technology, Principles and Applications, Elsevier, 1995.4.Schoenberg M.R and Papadopoulos C.G, Kirk-Othmer Encyclopedia, 1995.5.Eldridge R.B., Olefin/Paraffin Separation Technology : A review, 1993,pp. 2208-2212.6.Eisele P. and Killpack R., Ullman’s Encyclopedia of Industrial Chemistry, 1993.7.Kim H.S., Ryu J.H, Kim H., Ahn B.S and. Kang Y.S, Reversible Olefin Complexation by Silver Ions inDry Poly (Vinyl Methyl Ketone) Membrane and its Application to Olefin/Paraffin SeparationsChem,2000,pp.1261-1262.8.Baker R.W., Future Directions of Membrane Gas Separation Technology, Ind. Eng. Chem. 2002,pp.1393-1411.9.Keller H.A., Separation Process TecHnology, McGraw-Hill, 1997.10.Bickel C.S., Koros W.J, Olefin/paraffin Gas Separations with 6fda Based Polyimide Membranes,Membr J., 2000, pp.205-214.11.Baker R.W, Membrane Technology and Applications, Wiley, 2004.12.Marcano J.G., Tsotsis T.T., Catalytic Membranes and Membrane Reactor, Wiley, 2002.13.Hughes R.D., MaHoney J.A., Steigelmann E.F., Olefin Separation by Facilitated Transport Mem-branes, Recent Development in Separation Science, Vol. 9, CRC Press, 1986.14.Valus R.J, Eshraghi R., Vellkoff A.F., Davis J.C., High Pressure Facilitated Membrane for SelectiveSeparation and Process for the use Thereof, US Patent 5,057,641, 1990.15.Blachman M.W. , Velikoff A.E., Davis J.C , Valus R.J., High Pressure Facilitated Membranes forSelective Separation and Process for the use Thereof, U.S. Patent 5,131,928, 1992.16. Neplenbroek A.M., Bargeman D., Smolders C.A., Supported Liquid Membranes: Stabilization byGelatin, Membr J., 1992,pp.149-165.17.Kaluzhni N.E., Sidorenko V.M., Shishatski S.M., Yampolskii Y.P., Separation of Hydrocarbons byMembranes, vol. 31, 1991.18.CHiu K.F., Barber Z.H., Texture Development in Silver Films Deposited by Ionised Magnetron SputterDeposition, Thin Solid Films ,2000,pp.264-269.19.Nymeijer K., Visser T., Assen R. , Wessling M., Super Selective Membranes in Gas/Liquid MembraneContactors for Olefin/Paraffin Separation, Membr J., 2004,pp.107-114.20.Bessarabov D.G, Sirtsova D.A, Teplyakov V. ,Beckman V., Separation of Ethylene/ MetHane Mixtureby Membrane/Absorption System with Flowing Liquid Selective Absorbent ,vol. 35, 1994.

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21.Sungpet A., Way J.D, Thoen E. and Dorgan J.R, Reactive Polymer Membranes for Ethylene/EthaneSeparation, Membr J., 1997,pp.111-120.22.Teramoto M., Takeuchi N., Maki T. and Matsuyama H., Ethylene/Ethane Separation by FacilitatedTransport Membrane Accompanied by Permeation of Aqueous Silver Nitrate Solution, Separation andPurification Technology , 2002,pp.117-124.23.Pinnau I., Toy L.G, and Casillas C., Separation Membrane and Process, US Patent 5, 051, 1997.24.Bessarabov D.G., Sanderson R.D and Jacob E.P., High-efficiency Separation of an EthylenemthaneMixture by a Large-Scale Liquid-Membrane Contactor Containing Flat-sheet nonporous polymeric gas-separation membranes and a selective flowing-liquid Absorbent, Ind. Eng.,1995, pp.1769-1778.25.Jose B., Ryu J.H, Lee B.G, Lee H., Kang Y.S , Kim H.S, Effect of Phthalates on the Stability andPerformance of AgBF

4-PVP Membranes for Olefin-Paraffin Separation, Chem.,2001, p.2046.

26.Morisato A., Z. hea, Pinnaua I , Merkel T.C., Transport Properties of PA12-PTMO/AgBF4 Solid

Polymer Electrolyte Membranes for Olefin/Paraffin Separation, Desalination, 2002,pp.347-351.27.Kang S.W., Kim J.H., Won J., Char K. and Kang Y.S., Facilitated Transport of Ethylene acrossPolymer Membranes Containing Silver Salt: Effect of HBF

4 on the Photo Reduction of Silver Ions, 2003,

p. 768.28.Park H.H., Won J., OH S.-G. and Kang Y.S, Effect of Nonionic n-octyl [beta]-GlucopyranosideSurfactant on the Stability Improvement of Silver Polymer Electrolyte Membranes for Olefin/ParaffinSeparation, Membr J.,2003 , No. 1-2, pp.285-293.29.Matson L.A., Herrick C.S. and Ward W.J III, Progress on the Selective Removal of H

2S from Gasified

Coal using an Immobilized Liquid Membrane, Ind. Eng. Chem,1997, p.370.30.White K.M, Smith B.D, Duggan P.J, Sheahan S.L. and Tyndall E.M., MecHanism of FacilitatedSaccharide Transport througH Plasticized Cellulose Triacetate Membranes, 2001, p.165.31.Kang Y.S., Won J.O, Jung B.S., Park H.H., OH S.G., Solid State Polymer Electrolyte FacilitatedTransport Membranes Containing Surfactants, US Patent 2002/0162456, 2002.32.Long R.B., Caruso F., DeFeo F. and. Walker D.G., Bimetallic Salts and Derivatives Thereof, tHeirPreparation and use in the Complexing of Ligands, U.S. Patent 3,651,159, 1972.33.Herberhold M., Metal ð-Complexes, Part ii, Specific Aspects, Vol. II,1974.34.Kim h.S., Kim Y.J., Kim J.J, Lee S.D., Kang Y.S. and Chin C.S., Spectroscopic Characterization ofCellulose Acetate Polymer Membranes Containing Cu(1,3-butadiene)OTf as a Facilitated Olefin TransportCarrier, 2001, pp.1720-1725.35.Terry P.A., Noble R.D., Swanson D., Koval C.A., Electrochemically Modulated Complexation Processfor Ethylene/ethane Separation, AICHE J. 1997,pp.1709-1716.36.Teramoto M., SHimizu S., Matsuyama H., Matsumiya N., Ethylene/Ethane Separation and Concentra-tion by Hollow Fiber Facilitated Transport Membrane Module with Permeation of Silver Nitrate Solution,Separation and Purification Technology ,2005,pp.19-29.37.Ward W.J, Robb W.L., Analytical and Experimental Studies of Facilitated Transport, AICHE J., 1970,No. 3, pp.405-410.38.Quinn H.W., Hydrocarbon Separations with Silver(I) Systems. Progress in Separation and Purification,vol. 4, 1971.39.Donaldson T.L, Quinn J.A., Carbon Dioxide Transport through Enzymatically Active Synthetic Mem-branes, Chemical Engineering Science 30, 1975, No. 1, pp. 103-115.40.Teramoto M., Matsuyama H., Yamashiro T. and Okamoto S., Separation of Ethylene from Ethane by aFlowing Liquid Membrane Using Silver Nitrate as a Carrier, 1989, p.115.41.Ho W.S., Doyle G., Savage D.W. and Pruett R.L., Olefin Separations via Complexation with CuprousDiketonate, Ind. Eng. Chem. Res. 27 ,1988,pp.334-337.42Bai S., Sridhar S. and Khan A.A., Metal-ion Mediated Separation of Propylene from Propane usingPPO Membranes, Membr J. ,1998 , pp.131-139.43.Bai S., Sridhar S., Khan A.A, Recovery of Propylene from Refinery Off-gas Using Metal IncorporatedEthylcellulose Membranes, Membr J., 2000, pp.67-79.

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44.Kim J.H., Won J.and. Kang Y.S, Silver Polymer Electrolytes by [ð]-Complexation of Silver Ions withPolymer Containing C=C Bond and their Application to Facilitated Olefin Transport Membranes, MembrJ., 2004, No. 1-2, pp.199-202.45.Kim J.H. Lee D.H., Won J., Jinnai H. and. Kang Y.S., The structural Transitions of [ð]-Complexes ofPoly (styrene-b-butadiene-b-styrene) Block Copolymers with Silver Salts and their Relation to FacilitatedOlefin Transport, Membr J. ,2006, No. 1-2, pp.369-376.46.Chang J.W., Marrero T.R. and Yasuda H.K., Continuous Process for Propylene/Propane Separation byuse of Silver Nitrate Carrier and Zirconia Porous Membrane, Membr J.2002, pp.91-102.47.Yoshino M., Nakamura S., Kita H., Okamoto K., Tanihara N. , Kusuki Y., Olefin/Paraffin SeparationPerformance of Carbonized Membranes Derived from an Asymmetric Hollow Fiber Membrane of 6FDA/BPDA-DDBT Copolyimide, Membr J.2003, pp.169-183.48.Sunderrajan S., Freeman B.D., Hall C.K. and Pinnau I., Propane and Propylene Sorption in SolidPolymer Electrolytes Based on Poly(Ethylene Oxide) and Silver Salts, Membr. Sci. J., No. 1-2, 2001, pp.1-12.49.LeBlance O.H., Ward W.J. , Matson S.L. and. Kimura S.G., Facilitated Transport in Ion-excHangeMembranes, Membr. Sci. J., 1980,p.339.50.Kim J.H., Min B.R., Won J., Joo S.H., Kim H.S. and Kang Y.S., Role of Polymer Matrix in Polymer-Silver Complexes for Structure, Interaction, and Facilitated Olefin Transport, Macromolecules , 2003,pp.6183-6188.51.Kraus J.W. , Stern E.W., Silver Salt-olefin Complexes i. Silver Nitrate Butadiene, Organic and Biologi-cal Chemistry ,1962,pp.2893-2896.52.Hess S., Staudt-Bickel C. , LichtentHaler R.N., Propene/Propane Separation with Copolyimide Mem-branes Containing Silver Ions, Membr. Sci. J. ,2006,pp. 52-60.53.Kim J.H., Min B.R., Won J. and Kang Y.S., Anomalous Temperature Dependence of FacilitatedPropylene Transport in Silver Polymer Electrolyte Membranes, Membr J., , ,2003,pp.197-206.54.Kim J.H., Min B.R., Lee K.B., Won J. and Kang Y.S., Coordination Structure of Various Ligands inCrosslinked PVA to Silver Ions for Facilitated Olefin Transport, 2002,pp.2732-2733.55.Kim J.H., Park S.M., Won J. and Kang Y.S., Unusual Separation Property of Propylene/PropaneMixtures through Polymer/Silver Complex Membranes Containing Mixed Salts, Journal of MembraneScience ,2005,No. 1-2, pp.171-176.56.Kim J.H., Min B.R., Won J. and Kang Y.S, Revelation of Facilitated Olefin Transport through Silver-Polymer Complex Membranes using Anion Complexation, Macromolecules ,2003, No. 12, pp.4577-4581.57.Kim J.H., Won J. and Kang Y.S., Ð-Complexes of Polystyrene with Silver Salts and their use asFacilitated Olefin Transport Membranes, J. of Polymer Science, Part B: Polymer Physics ,2004,pp.2263-226958.Kim J.H., Won J. and. Kang Y.S., Olefin-Induced Dissolution of Silver Salts Physically Dispersed ininert polymers and their application to olefin/paraffin separation, Journal of Membrane Science,2004, No.2, pp. 403-407.59.Hong S.U., Jin J.H., Won J. and Kang Y.S., Polymer-salt Complexes Containing Silver Ions and theirApplication to Facilitated Olefin Transport Membranes, Adv. Mater.,12 2002, No. 13, pp.968-971.60.Park Y.S., Won J. and Kang Y.S, Facilitated Transport of Olefin Through Solid Paam and Paam-graftComposite Membranes with Silver Ions,. Membr. Sci. J. ,2001,No.61.Duan S, Ito A. and Ohkawa A., Separation of Propylene/Propane Mixture by a Supported LiquidMembrane Containing Triethylene Glycol and a Silver Salt, Membr. Sci. J., 215, 2003,pp.53-60.62.Kang Y.S., Kang S.W., Kim H., Kim J.H, Won J., Kim C.K and Char K., Interaction with Olefins ofthe Partially Polarized Surface of Silver Nanoparticles Activated by -Benzoquinone and its Implications forFacilitated Olefin Transport, No. 3,2007, pp.475-479.63.Ho W.S., and Dalrymple D.C., Facilitated Transport of Olefins in Ag+-Containing Polymer Membranes,Membr. Sci. J., ,1994,p. 13.64.Goering R.M., Bowman C.N., Koval C.A., R. D. Noble and M. E. Ashley, Complexation Structure and

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Transport Mechanism of 1, 5-Hexadiene and 1-Hexene through Silver Facilitated Transport Membranes,Membr Sci. J., ,2000, p. 57.65.hu W., and Tanioka A., Hydrodynamic Surface Flow and the Swelling Effect of C

2 and C

4 Alkenes

through Anhydrous Ag+ -Doped Perfluorocarbon Type Ion-Exchange Membranes, Colloid & InterfaceScience J. 1999,pp. 135-14366.Lucas H.J., Billmeyer F.W. and Pressman J.D., The coordination of Silver Ion with UnsaturatedCompounds. III. Mixtures of Trimethylethylene and Cyclohexene, Contrinution from the Gates and CrellinLaboratories of Chemistry 65 (1943).67.Son J.S., Choi H.W., Choi D.K., Lee S.D,. Kim H.S. and Kim S.W., Selective Absorption of Isoprenefrom C5 Mixtures by ð- Complexation with Cu(I), Ind. Eng. Chem. 2005,pp.4717-4720.68.Sridhar S. and Khan A.A., Simulation Studies for the Separation of Propylene and Propane byEthylcellulose Membrane, Membr. Sci J.,1999,No. 1-2, pp.209-219.69.Bessarabov D.G., Theron J.P. and Sanderson R.D., Novel Application of Membrane Contactors:Solubility Measurements of 1-Hexene in Solvents Containing Silver Ions for Liquid Olefin/Paraffin Separa-tions, Desalination, 1998, No. 3, pp.279-284.70.Bessarabov D.G., Phenomenological Analysis of Ethylene Transport in a Membrane Contactor Con-taining Solutions of Silver Nitrate, Desalination,1998, No. 3, pp.265-277.

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1. Sabatier P., Ind . Eng. Chem., Vol. 18, No.10, 1926, pp. 1005-1008.2.Dauben W.C., and Pitger K.S., Steric Effects in Organic Chemistry, John Wiley and Sons, 1956.3.Chem. Eng., Vol.58, No.24 , 1980, pp. 14.4.Lepage G. F., Applied Heterogamous Catalysts, Edition Technip, 1988.5.Campbell Ian M., Catalysis at Surfaces, Springer, 1988.6.Fter A., Cabell J.A., Campelo J.M,.Garcia A, Polund and Marinas J. M., Bulletin Socien ChimiqueBelges Vol.93, 1984, pp. 859.7. Trambouze P. et. al, Chemical Reactors Gulf Publishing Co, 1988.8.Donald M. Little , Catalytic Reforming, Pennwell Books,19859.Nicoly , Martin J. , Jungers J . C., BUR.S Chim Belge, Vol.57, 1984, pp.55.10.Samuel W. Bodman, The Industrial Practice of Chemical Process Engineering, MIT Press, 1968.11.Engineering Data Book, Gas Processors Suppliers Association, 9tH Edition, 1972.12.Perry Robert H., Don W. Green, Perry’s Chemical Engineers Handbook 7tH edition McGraw- hill,1997.13. Reid R. C., John M. Prausnitz, Poling B.E., The Properties of Gases and Liquids, 4tH Edition,McGraw- Hill Book Company, 1984.14.Hougen O. A., Watson K. M. , Ragatz R. A. Chemical Process Principles, Thermodynamics, JoHnWiley and Sons, Vol.2, 1959.15.Stull D. R., Westrum E. F., Sinke G. C., THe CHemical THermodynamics of Organic Compounds,Robert Krieger Publishing Company, 1987.16.Reilly J. W., Sze M. C. , Hydrotreating Benzene to Cyclohexane, Chemical Engineering Progress,Vol.63, No.6, 1967,pp.670-68117.Satterfield C. N., Heterogeneous Catalysis in Practice, McGraw- Hill Book Company, 1980.18.Dufau F. A., Eschard F., Haddad A.C., Tonon C.H., High Purity Cyclohexane, Chemical EngineeringProgress, Vol.60, No.9, 1964. pp. 43-4719.Korbach P. F.,. Steewart W.E., Kinetics and Equilibrium Studies of Benzene Hydrogenation in BatchRecycle Reactor, Ind. Eng. Chem.,Vol.3, No.1, 1964, pp. 24-27.20.Marcel R. L., Sachs H.M., Cyclohexane in Encyclopedia of Chemical Processing and Design, Vol. 14,1982.21.Stanford Research Institute Series, Vol. 22, pp. 168-174.22.Thomas Charles L., Catalytic Processes and Proven Catalysts, Academic Press, 1970.23.JoHn A. Dean, Lange’s Handbook of Chemistry, Fifteenth Edition, McGraw- Hill, 1999.

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1- Beatty T.L., Dunn, K., Harrigan, E.T., Stuart K., and Weber H., Field Evaluation of Sulfur-ExtendedAsphalt Pavements, 1987.2-, Sulfur Outlook 2003, The Sulfur Institute, TSI Publication, 2003.3- Kennepohl G., Miller, Sulfur-Asphalt Binder Technology for Pavements, 1987.4- Stanley M., Walas, Chemical Process Equipment Selection Design, 1988.

8- Kennepohl, Gerhard J. A., Logan, Alan, Bean, David C., Apparatus for Continuous Preparation ofSulfur Asphalt Binders and Paving Compositions, U.S Patent 4155654.9- Hayner, Roger E., Wesley, David P., Sulfur-treated Asphalt Compositions and their Preparation, U.SPatent 6001162.10- Burris, Michael V., Asphalt-sulfur Emulsion Composition, U.S Patent 4211575.11- Burris, Michael V., Asphalt-sulfur Emulsion Composition, U.S Patent 4298397.12-Pronk, Frank E., Sulfur-bituminous Compositions, U.S Patent 4154619.13- www.fmsulphur.com14-www.es.epa.gov

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1-Miquel J. and Castells F., Hydrocarbon Process, Vol.72, No.12, 1993, pp .101-105.2-Miquel J. and Castells F., Hydrocarbon Process, Vol.73, No.1, 1994, pp. 99-103.3-Riazi M.R. and Daubert T.E., Hydrocarbon Process, Vol.59, No.3, 1980, pp. 105-116.4-Edmister W.C. and Lee B.I., Applied Hydrocarbon Thermodynamics, Gulf Publishing Company, 1984.5-Soave G., Chem. Eng. Sci., Vol.27, 1972, pp .1197-1203.6-Peng D.Y. and Robinson B.R., Ind. Eng. Chem. Fundam., Vol.15, 1976, pp. 59-64.7-RedlicH O. and Kwong J.N.S., Chem. Rev., Vol.44, 1949, pp. 233-244.

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Biofuels International Expo & Conference,4-5 Jun 2008 The Ahoy exhibition centre, Rotterdam,Netherlands.Website: biofuelsinternationalexpo.com

Strategic Procurement Summit Asia 2008,12-13 Aug 2008Kuala Lumpur, Malaysia.Website: enquiry@iqpc.com.sg

1st Russia & CIS Alternative FuelsTechnology Conference22 Sep 2008Czech RepublicWebsite: conferences@europetro.com

6th International Bottom of the BarrelTechnology Conference9-10 OctBarcelona, Spain.Website: conferences@europetro.com

London Oil Week 200817-20 Nov 2008London, United Kingdom.Website: glopac.com

The 6th International Trade Fair on WasteManagement, Recycling and EnvironmentalTechnology, Wasted, International ExhibitionCenter Crocus Expo2-5 June 2008Moscow, RussiaWebsite: waste-tech@sibico.com

19th World Petroleum Congress29 June- 3 July 2008Madrid, SpainWebsite: www.19wpc.com

The Relevant Conferences and Forums

Scientific-Propagative Monthly - April 2008 - 13 Issue5

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condensate distillation units in the refinery. However, due to different reasons such as low prices they werenot put into operation. Recently, owing to the rise of oil prices, the gas company has decided to put theseunits into operation. Nevertheless, due to the time delay, the feed composition of the unit has been changed.Therefore, it is the aim of this study to simulate the unit with HYSIS software and compute parameterssuch as lines temperatures, optimum tray efficiency, number of fractions imposed on the feed and optimumfeed temperature; and compare these results to the original design data. In this work and for designingpurposes, different thermodynamic models have also been assessed and an appropriate model was adopted.Moreover, we were able to achieve a feed composition similar to those of the original design, throughanalyzing different combination of sweet and sour condensate compositions. Therefore, in this research weobtained a feed mixture (40% S-400 and 60% S-600) which was compatible with the original designdata. Furthermore, from the numerical results obtained in this work it would be possible to produce amanual for starting-up and shuting-down of the unit.

Keywords: Simulation, Gas Condensate, Khangiran Refinery, Distillation, HYSYS Software

Scientific-Propagative Monthly - April 2008 - 13 Issue4

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Study of Benzene Hydrogenation in a Tubular ReactorM. H. Peyrovi1, A.Irandoukht2, M.R.Toussi1 and J.Forotan3

(1)Department of Chemistry, Shahid Beheshti University, 1983963113 Evin, Tehran, Iran(2)Research Institute of Petroleum Industry, Tehran, Iran

(3) Tehran oil refining company, Zone B, Tehran, Iranm-peyrovi@cc.sbu.ac.ir

AbstractsThe thermodynamics and kinetics of benzene hydrogenation were studied in a continuous reactor operatingat hydrogen pressures of 2-3 atm and at temperatures of 100-200O C. The catalysts of nickel supportedon gamma alumina were used in all experiments. Rate equations based on a sequential addition mechanismwere derived. The rate equations were able to describe most of the features of the experimental data. Inaddition, details of preliminary reactor design for benzene hydrogenation were performed.

Key words: Cyclohexane, Benzene, Hydrogenation, Catalyst, Continuous Reactor

Studying of Sulfur Usages for Strengthening and Supporting of Asphalt andProduction Processes

Yasamin JavadiSenior Expert of NIORDC Training Section

yjavadi1362@gmail.com

AbstractDesulphurization of petroleum materials as reducing air pollution is an important issue. The use of sulfur formanufacturing pavement Asphalt is the most considerable matter in many countries. In this article, theeffects of mixing sulfur with bitumen, the engineering characteristics of the sulfur and asphalt mixture (SEA)such as stiffness modulus, viscosity, resilient modulus, and rut resistance and also different productionmethods of sulfur asphalt and safety concerns are discussed. The substitution of 30 to 50 percent consumablebitumen with sulfur leads to increase the resistance of asphalt significantly.

Key words: Asphalt, Sulfur, Marshall, SEA, Sulfur Bitumen, Emulsion

Simulation of the Topping Unit in Khangiran Gas Refinery andDetermination of the Operating Parameters of the Unit and Different

Streams in the Steady State Condition

N. Saghatoleslami* and F. ShikholeslamiDepartment of Chemical Engineering, Ferdowsi University

Y. DadmohammadiDept. of Chemical Eng., University of Sistan and Baluchestan

slami@um.ac.ir

Abstract Gas condensates are extracted from the gas wells in the Sarakhs province which is located in thevicinity of the Khangiran Gas Refinery. These condensates are mainly sold as solvents or illegally exportedto the neighboring countries and are estimated to worth about $30 million dollars each year. There are two

Scientific-Propagative Monthly - April 2008 - 13 Issue3

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Designing RDC Columns Using Mean Value of Hold-up and Investigation ofHold-up Variation along the Column

Behafarid Zolfaghari1 , Hosein Bahmanyar2, Rokhsareh Moghadasian3

1,2,3- Chemical Engineering Faculty, Tehran Universityhbahmany@ut.ac.ir

AbstractRDC columns are one of the most important extraction columns. This type of extraction columns is usedfor extracting aromatics from oil using furfural solvent. These columns are used in other industries such asmetal extraction industries, nuclear industries and so on. In designing RDC columns, axial mixing, dropbreakage, coalescence, single mass transfer and other models have been used. In this research work hold-up and its variation has been taken into account. Designing RDC column using mean values of hold-up andits variation along the column have been compared.

Keywords: Liquid-liquid extraction, RDC, Hold-up

Membrane’s Application in Olefin / Paraffin SeparationMaryam Ajir (1)

Tahereh Kaghazchi(2)Mohammad Rahmani(3)

(1)Senior Expert, Chemical Engineering Faculty, Amir Kabir University of Technology(2) Professor, Chemical Engineering Faculty, Amirkabir University of Technology

(3) Associate Professor, Chemical Engineering Faculty, Amirkabir University of Technology

Kaghazch@aut.ac.ir

AbstractIn the present work the primary attentions are given to applications and advantages of olefin/paraffin separation byfacilitated transport membrane technology in bench, pilot and industrial scales in a variety of modules. Moreover, anumber of potential applications of the FTMs in olefin/paraffin separation such as ethylene/ethane, propylene/propane,etc have been categorized in this review. The effects of different parameters on the separation factor, permeance, andselectivity in the FTMs are also considered. The application of facilitated transport membrane technology leads toenergy saving and friendly environmental processes. According to this fact, it seems to be a necessity to conduct moreresearches and experiments on variety of related fields such as producing membranes for harsh physical and chemicalenvironments in order to increase the selectivity and stability as well as improving FTM’s processes in bench and pilotscales to industrial applications.

Key Words: Membrane, Facilitated Transport, Olefin/Paraffin Separation

Scientific-Propagative Monthly - April 2008 - 13 Issue2

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Concessionaire: National Iranian Oil Refining and Distribution Company

NO. 13 April-May 2008

Vahid Taghikhani PhD in Chemical Engineering –Member of Academic Staff (Associate Professor) - Sharif University of TechnologyCyrus Ghotbi PhD in Chemical Engineering –Member of Academic Staff (Professor) - Sharif University of TechnologyNezamodin Ashrafizadeh PhD in Chemical Engineering- Member of Academic Staff (Associate Professor)-Iran University of Science and TechnologyHossein Bahmanyar PhD in Chemical Engineering –Member of Academic Staff (Associate Professor)- Tehran UniversityAli Haghtalab PhD in Chemical Science - Member of Academic Staff (Associate Professor) - Tarbiat Modares UniversityFariborz Rashidi PhD in Chemical Engineering –Member of Academic Staff (Professor)- Amir Kabir University of Technology

Jalal Shayegan PhD in Chemical Engineering –Member of Academic Staff (Professor) - Sharif University of Technology

Mohammad- Reza Omidkhah PhD in Chemical Engineering –Research ,Development and Technology Director , Member of Academic Staff (Professor) ,TarbiatModares University

Director

Editor – in – Chief

Editorial Board

THe Editorial Scientific and TechnicalConsultantsMohammad-Ali VafazadehMohsen Alagheband HosseiniHossein AghayanMehrdad KooshaPooneh GharabaglooAnahita Yaghmaie

Referees for this issueFathollah FarhadiShahrokh ShahhoseiniRamin BozorgmehriMorteza SohrabiEmad RoayayiHossein BerijaniyanHossein Manafi VarkianiToraj MohammadiMohammad AmiriTahereh KaghazchiDehghani

Hossein TalachiMohammad KazemeiniMohsen SaremiManoochehr NikazarSeyed Mohammad- Reza Alavi MoghadamMohammad PazookiSoheila YaghmaieBabak BonakdarpoorSeyed Jamaledin HashemianAmir-Hossein Jalili

Technical AffairsReza Amirsardari

Translation & Internet ServicesAnahita Yaghmaie

Secretariate and Internal ServicesLeila Ahmadi

Address: No. 140 Ostad Nejatollahi Ave., Tehran/IranNational Iranian Oil Refinning and Distribution Company

P.O.Box: 15815.3499Tel:(9821) 88891457Fax: (9821) 66153613

E-mail: Farayandno@yahoo.comWebsite: WWW.FARAYANDNO.NIORDC.IR