|本期目录/Table of Contents|

[1]A. A. Boriaev.Effect of Liquid-phase Oxidation Impurities on Solubility of Water in Hydrocarbon Fuels[J].火炸药学报,2018,41(3):230-235.[doi:10.14077/j.issn.1007-7812.2018.03.003]
 A. A. Boriaev.Effect of Liquid-phase Oxidation Impurities on Solubility of Water in Hydrocarbon Fuels[J].,2018,41(3):230-235.[doi:10.14077/j.issn.1007-7812.2018.03.003]
点击复制

Effect of Liquid-phase Oxidation Impurities on Solubility of Water in Hydrocarbon Fuels()
     
分享到:

《火炸药学报》[ISSN:1007-7812/CN:61-1310/TJ]

卷:
41卷
期数:
2018年第3期
页码:
230-235
栏目:
出版日期:
2018-06-29

文章信息/Info

Title:
Effect of Liquid-phase Oxidation Impurities on Solubility of Water in Hydrocarbon Fuels
作者:
A. A. Boriaev
Saint Petersburg State University of Architecture and Civil Engineering, 4 Vtoraya Krasnoarmeyskaya St., Saint Petersburg, 199005, Russia
Author(s):
A. A. Boriaev
Saint Petersburg State University of Architecture and Civil Engineering, 4 Vtoraya Krasnoarmeyskaya St., Saint Petersburg, 199005, Russia
关键词:
water solubilityhydrocarbon fuelsoxidation factor
Keywords:
water solubilityhydrocarbon fuelsoxidation factor
分类号:
TJ55;O65
DOI:
10.14077/j.issn.1007-7812.2018.03.003
文献标志码:
-
摘要:
The effect of liquid-phase oxidation impurities on the solubility of water in hydrocarbon fuels was studied. The results show that the concentration of polar surfactant molecules in the first region increases (true solution) during fuel oxidation, and since the oxidation groups (-COOH, -O=O, -OH, etc.) have similar dipole moment μ, the dielectric loss tangent tan δ increases linearly in this region with surfactant concentration. Upon further oxidation, micelle structures begin to form at a certain point. Micelle formation leads to a sharp decrease in the dipole moment attributable to the monomer unit μ/n, where n is the number of molecules in a micelle. A several-fold decrease in the dipole moment leads to a sharp drop in tan δ. Upon further increase in the number and size of micelles, the dipole moment remains practically unchanged, and the dielectric loss tangent begins to increase linearly again with surfactant concentration. If the critical concentration for micelle formation is achieved upon further oxidation of hydrocarbon liquids, micelle formation processes occur spontaneously in the solution, and the true solution becomes a colloidal system (sol). The resulting micelles are structured with hydrocarbon radicals of molecules toward the outside and hydrophilic (polar) groups toward the inside. Water molecules are located inside micelles and held so securely that water molecules do not aggregate as temperature decreases. The reason for significant differences in the equilibrium solubility of water in hydrocarbon fuels is the different oxidation factors of product samples, resulting from the accumulation of various concentrations of oxidation products, which are natural surfactants, in hydrocarbon fuels.
Abstract:
The effect of liquid-phase oxidation impurities on the solubility of water in hydrocarbon fuels was studied. The results show that the concentration of polar surfactant molecules in the first region increases (true solution) during fuel oxidation, and since the oxidation groups (-COOH, -O=O, -OH, etc.) have similar dipole moment μ, the dielectric loss tangent tan δ increases linearly in this region with surfactant concentration. Upon further oxidation, micelle structures begin to form at a certain point. Micelle formation leads to a sharp decrease in the dipole moment attributable to the monomer unit μ/n, where n is the number of molecules in a micelle. A several-fold decrease in the dipole moment leads to a sharp drop in tan δ. Upon further increase in the number and size of micelles, the dipole moment remains practically unchanged, and the dielectric loss tangent begins to increase linearly again with surfactant concentration. If the critical concentration for micelle formation is achieved upon further oxidation of hydrocarbon liquids, micelle formation processes occur spontaneously in the solution, and the true solution becomes a colloidal system (sol). The resulting micelles are structured with hydrocarbon radicals of molecules toward the outside and hydrophilic (polar) groups toward the inside. Water molecules are located inside micelles and held so securely that water molecules do not aggregate as temperature decreases. The reason for significant differences in the equilibrium solubility of water in hydrocarbon fuels is the different oxidation factors of product samples, resulting from the accumulation of various concentrations of oxidation products, which are natural surfactants, in hydrocarbon fuels.

参考文献/References:

[1] Kobyzev S V. Modelirovanie obezvozhivanija uglevodorodnogo gorjuchego s primeneniem azota pri vypolnenii tehnologicheskih operacij podgotovki raketnogo topliva na startovom komplekse[J]. Engineering Bulletin of the Bauman Moscow State Technical University, 2014(11):11-15.
[2] Aleksandrov A A, Zolin A V, Kobyzev S V, et al. Sravnitel’nyj analiz tehnologij obezvozhivanija raketnogo topliva s primeneniem azota dlja nazemnyh kompleksov kosmodromov[J]. Bulletin of the Bauman Moscow State Technical University, Mechanical Engineering Series, 2013(1):12-22.
[3] Goncharov R A, Zolin A V, Kobyzev S V, et al. Modelirovanie teplomassoobmennyh processov podgotovki uglevodorodnogo gorjuchego pered zapravkoj v toplivnye baki rakety na startovom komplekse[C]//7th International Aerospace Congress. Moscow:Horuzhevskij A I, 2012:242-243.
[4] Ma X, Zhou A, Song C. A novel method for oxidative desulfurization of liquid hydrocarbon fuels based on catalytic oxidation using molecular oxygen coupled with selective adsorption[J]. Catalysis Today, 2007, 123(1-4):276-284.
[5] Fernández-Tarrazo E, Sánchez A L,Liñán A,et al. A simple one-step chemistry model for partially premixed hydrocarbon combustion[J]. Combustion and Flame, 2006,147(1/2):32-38.
[6] You X, Egolfopoulos F N,Wang H. Detailed and simplified kinetic models of n-dodecane oxidation:the role of fuel cracking in aliphatic hydrocarbon combustion[J]. Proceedings of the Combustion Institute, 2009, 32(1):403-410.
[7] Murugan P, Mahinpey N, Mani T, et al. Effect of low-temperature oxidation on the pyrolysis and combustion of whole oil[J]. Energy, 2010,35(5):2317-2322.
[8] Al-Hamamre Z, Trimis D. Investigation of the intermediate oxidation regime of diesel fuel[J]. Combustion and Flame, 2009, 156(9):1791-1798.
[9] Li D, Fang W, Xing Y, et al. Spectroscopic studies on thermal-oxidation stability of hydrocarbon fuels[J]. Fuel, 2008, 87(15/16):3286-3291.
[10] Thomas S, Wornat M J. The effects of oxygen on the yields of polycyclic aromatic hydrocarbons formed during the pyrolysis and fuel-rich oxidation of catechol[J].Fuel, 2008, 87(8):768-781.
[11] Shakeri A,Mazaheri K, Owliya M. Using sensitivity analysis and gradual evaluation of ignition delay error to produce accurate low-cost skeletal mechanisms for oxidation of hydrocarbon fuels under high-temperature conditions[J]. Energy Fuels, 2017,31(10):11234-11252.
[12] Borjaev A A, Korichev A A. Himmotologija. Avtomobil’nye topliva i processy, protekajushhie v toplivnyh sistemah avtomobil’noj tehniki[M]. Saint Petersburg:Publishing House of the Saint Petersburg State University of Service and Economics, 2014:208.
[13] Kobyzev S V. Metodika rascheta koefficientov massootdachi pri osushke uglevodorodnogo raketnogo topliva[J]. Science and Education. Bauman Moscow State Technical University (electronic journal),2011(11). Available at:http://technomag.edu.ru/doc/245147.html (accessed:24.09.2012).
[14] Sorenson K L. Comparative studies on oxygen mass transfer for the design and development of a single-use fermentor[D].http://digitalcommons.usu.edu/etd/738(accessed:23.11.2017).2010.
[15] Masood R M A, Rauh C, Delgado A. CFD simulation of bubble column flows:an explicit algebraic reynolds stress model approach[J]. International Journal of Multiphase Flow, 2014(66):11-25.
[16] Gilbert D E, Wagoner D E, Smith F. Guidelines for Development of a Quality Assurance Program:Determination of Phosphorus in Gasoline, Vol. XⅡ[R].Washington D C.:US EPA,2013:70.
[17] Clark A Q, Smith A G, Threadgold S, et al. Dispersed water and particulates in jet fuel:size analysis under operational conditions and application to coaleser disarming[J]. Industrial & Engineering Chemical Research, 2011, 50(9):5749-5765.
[18] Litvinenko A N, Shlejfer A A. Sposob podgotovki otverzhdennogo uglevodorodnogo topliva k primeneniju i ustanovka dlja ego osushhestvlenija:RU,2289064[P]. 1990.

相似文献/References:

备注/Memo

备注/Memo:
收稿日期:2017-12-10;改回日期:2018-01-18。
作者简介:A. A. Boriaev (1953-),male,Dr.,research field:energetic materials.E-mail:sasa1953@yandex.ru
更新日期/Last Update: 1900-01-01