Study of Microwave Radiation Influence on Fuel Oil Desulphurization Process

Many chemical processes are intensified by microwave radiation. The main factor determining the usefulness of microwaves in most transformations of organic compounds is the reaction time reduction to obtain the maximum yield of the target product. The presence of sulphur in oil and petroleum products is detrimental to refining equipment, and also has a negative impact on the environment in the form of waste generated during refining. In this connection development of methods on removal of sulphurcontaining compounds from oil products and oil by their transformation (in particular oxidation) and subsequent removal is very significant. Oxidative desulphurisation of fuel oil takes up to several hours depending on the reagents used. In this work an attempt has been made to significantly reduce the duration of the process. Oxidation of sulphur-containing organic compounds in fuel oil under microwave radiation has been considered, which proceeds in the presence of an oxidizer (hydrogen peroxide) and a catalyst (titanium dioxide). It was found that the oxidative desulphurization of fuel oil at microwave radiation proceeds effectively and quickly within 1--5 min. The achieved degree of desulphurization is 66 % when exposed to microwave radiation for 5 min. The influence of the amount of water in the reaction mixture on the efficiency of oxidative desulphurization of fuel oil under microwave radiation has been studied; it was found that the optimum ratio of water : fuel oil was (1--1.2) : 1

References

[1] Molodtsova M.A., Sevast’yanova Yu.V. Opportunities and prospects of microwave radiation in industry (review). Lesnoy zhurnal [Russian Forestry Journal], 2017, no. 2, pp. 173--187 (in Russ.). DOI: https://doi.org/10.17238/issn0536-1036.2017.2.173

[2] Daminev R.R., Bikbulatov I.Kh., Sharipova E.B., et al. Using electromagnetic radiation of the ultrahigh frequency range for drying mineral salts. Izvestiya VUZov. Khimiya i khimicheskaya tekhnologiya [ChemChemTech], 1999, vol. 42, no. 2, pp. 135--138 (in Russ.).

[3] Rakhmankulov D.L. (ed.). Mikrovolnovoe izluchenie i intensifikatsiya khimicheskikh protsessov [Microwave radiation and intensification of chemical processes]. Moscow, Khimiya Publ., 2003.

[4] Berdonosov S.S. Microwave chemistry. Sorosovskiy obrazovatel’nyy zhurnal, 2001, no. 1, pp. 32--38 (in Russ.).

[5] Shavshukova S.Yu. Intensifikatsiya khimicheskikh protsessov vozdeystviem mikrovolnovogo izlucheniya. Avtoref. dis. kand. tekh. nauk [Intensification of chemical processes by exposure to microwave radiation. Abs. Cand. Sc. (Eng.) Diss.]. Ufa, NIIReaktiv Publ., 2003 (in Russ.).

[6] Novikova O.B. Kliniko-eksperimental’noe obosnovanie vozmozhnosti SVCh izlucheniya dlya polimerizatsii plastmass v stomatologii. Avtoref. dis. kand. med. nauk [Clinical and experimental substantiation of possibility of microwave radiation to polymerize plastic in dentistry. Abs. Cand. Sc. (Med.) Diss.]. Moscow, MMSI Publ., 1997 (in Russ.).

[7] Sutugina T.F., Poyurovskaya I.Ya., Rudenko K.N., et al. Sposob polucheniya akrilovogo bazisa mikrovolnovoy polimerizatsii [Method for producing acryl base of microwave polymerization]. Patent RU 2171104. Appl. 07.09.2000, publ. 27.07.2001 (in Russ.).

[8] Daminev R.R., Bikbulatov I.Kh., Yunusov D.Sh., et al. Preparation of the modified catalysts for use in processes of synthesis monomers under action of the microwave radiation. Bashkirskiy khimicheskiy zhurnal [Bashkir Chemistry Journal], 2009, vol. 16, no. 3, pp. 110--112 (in Russ.).

[9] Karimov O.Kh., Daminev R.R., Kas’yanova L.Z., et al. Application of microwave radiation for preparation metal oxide catalysts. Fundamental’nye issledovaniya [Fundamental Research], 2013, no. 4, pp. 801--805 (in Russ.).

[10] Markin V.I., Cheprasova M.Yu., Bazarnova N.G. Basic directions of use microwave radiation in the processing of plant raw material (review). Chemistry of Plant Raw Material, 2014, no. 4, pp. 21--42 (in Russ.). DOI: https://doi.org/10.14258/jcprm.201404597

[11] Parmon V.N., Tanashev Yu.Yu., Udalov E.I., et al. Sposob termicheskoy pererabotki vysokomolekulyarnogo uglerodsoderzhashchego syr’ya v bolee legkie soedineniya [Method of thermal processing high molecular carbon containing raw material into more light compounds]. Patent RU 2385344. Appl. 24.07.2008, publ. 27.03.2010 (in Russ.).

[12] Kovalenko K.V., Krivokhizha S.V., Chaykov L.L. Sposob prigotovleniya melkodispersnoy emul’sii v organicheskoy srede [Method of preparing fine aqueous emulsion in liquid organic medium]. Patent RU 2349631. Appl. 20.11.2007, publ. 20.03.2009 (in Russ.).

[13] Shchukin V.A. Sposob polucheniya uglevodorodnogo avtomobil’nogo topliva [Method of producing hydrocarbon motor fuel]. Patent RU 2545059. Appl. 20.05.2013, publ. 27.03.2015 (in Russ.).

[14] Kong L., Li G., Wang X., et al. Oxidative desulfurization of organic sulfur in gasoline over Ag/TS-1. Energy Fuels, 2006, vol. 20, iss. 3, pp. 896--902. DOI: https://doi.org/10.1021/ef050252r

[15] Karimov O.Kh., Daminev R.R., Kas’yanova L.Z., et al. Research of drying chromiaalumina catalyst in the electromagnetic field of microwave range. Neftegazovoe delo [Oil and Gas Business], 2013, no. 4 (in Russ.). Available at: http://ogbus.ru/files/ogbus/authors/KarimovOKh/KarimovOKh_1.pdf