Methanol emulsified diesel was environmental friendly and energy-saving fuel. In this paper, the emulsifier ratio was optimized by orthogonal experiment, concluded that the appropriate emulsifier mass ratio was: m(oleic acid): m(Span-80): m(OP-10): m(Tween-80): m(carboxymethyl cellulose sodium)= 14:5:2:1:5, and HLB value was 4.48. Pre-emulsified stage used high speed disperser, depth emulsification stage used ultrasound emulsification device. Effect of ultrasonic time, ultrasonic power, methanol content and emulsifier content factors on the stability of methanol emulsified diesel was investigated. Based on the experiment of single factor, the mathematical model of ultrasonic preparation methanol emulsified diesel was established with the Box-Behnken model of response surface methodology in Design-Expert software, and these technical parameters were optimized. The result shows that the influence degree of the stability of methanol emulsified diesel from large to small was emulsifier content, ultrasonic power, methanol content and ultrasonic time, The interaction from strong to weak was ultrasonic time and power, ultrasonic power and the emulsifier content, methanol content and emulsifier content, ultrasonic time and the emulsifier content, ultrasonic time and methanol content. The optimized technological parameters were as follows: ultrasonic time was 20min, ultrasonic power was 220W, methanol content was 10%, emulsifier content was 5%. Above the optimum process conditions experiments, the relative deviation of the stabilization time and the predicted value was 2.69%, the mathematical model of response surface fitting equation can be used to determine and predict optimum conditions of ultrasound production of methanol emulsified diesel.
[1]YANFENG G, SHENGHUA L, HEJUN G, et al.A new diesel oxygenate additive and its effects on engine combustion and emissions[J].Applied Thermal Engineering, 2007, 27(1):202-207
[2]BURGER J L, BAIBOURINE E, BRUNO T J.Comparison of diesel fuel oxygenate additives to the composition-explicit distillation curve method Part 4: Alcohols,aldehydes,hydroxyl ethers,and esters of butanoic acid[J].Energy & Fuels, 2011, 26(2):1114-1123
[3] 李建彤.超声柴油微乳化研究[D].南京工业大学, 2004.
[4] 焦纬洲.超重力强化甲醇柴油乳化燃料制备技术[M]. 北京:国防工业出版社, 2013.
[5]李文乐.甲醇汽油在国内外应用情况及分析[J].化工进展, 2010, 29(3):457-464
[6] 王军, 杨许召.乳化与微乳化技术[M]. 北京:化学工业出版社, 2012, 41-43.
[7] A Cucheval, R.C.Y.Chow.. A study on the emulsification of oil by power ultrasound[J].Ultrasonics Sonochemistry, 2008, 15(5):916-920
[8]Lavilla I, Cabaleiro N, Pena F, et al.Ultrasound-assisted emulsification micro-extraction with simultaneous derivatization coupled to fiber optics-based cuvetteless UV-vis micro-spectrophotometry for formaldehyde determination in cosmetic samples[J].Analytica Chimica Acta, 2010, 674(1):59-63
[9]Jiang H, Xu S, Cai X, et al.Comparisons of diesel micro-emulsion properties using spontaneous emulsifying and ultrasonic dispersing methods[J].Petroleum Science and Technology, 2014, 32(14):1763-1770
[10]Chávez A, Ramírez M, Medina E, et al.Advances in the generation of a new emulsified fuel[J].Heat and Mass Transfer, 2011, 47(8):1051-1063
[11] S G. Gaikwad, A.B. Pandit.. Ultrasound emulsification: effect of ultrasonic and physicochemical properties on dispersed phase volume and droplet size [J].Ultrasonics Sonochemistry, 2008, 15(4):554-563
[12]PARK S H, KIM H J, LEE C S.Effects of dimethyl ether (DME) spray behavior in the cylinder on the combustion and exhaust emissions characteristics of a high speed diesel engine[J].Fuel Processing Technology, 2010, 91(5):504-513
[13]Veljkovi? V B, Avramovi? J M, Stamenkovi? O S.Biodiesel production by ultrasound-assisted transesterification: State of the art and the perspectives[J].Renewable and Sustainable Energy Reviews, 2012, 16(2):1193-1209
[14]焦纬洲, 刘有智, 祁贵生.柴油-甲醇-乳化剂三组元乳化液的制备及其理化特性[J].石油学报石油加工, 2011, 27(1):91-94
[15]ZHU Jun-ren, ZHENG Huai-li, ZHANG Zhi.Synthesis and characterization of composite flocculant PAFS-CPAM by response surface methodology[J].CIESC Journal, 2012, 63(12):4019-4027
[16]JIANG Shao-jie, FENG Xin-rui, LI Xiao-en.Preparation of PAC-PDMDAAC hybrid flocculant by response surface method and its characterization[J].CIESC Journal, 2014, 65(2):731-736
[17]张娜, 郭姣, 季文彬等.响应面法优化白囊耙齿菌中腺苷的超声法提取工艺[J].中国医药工业杂志, 2011, 42(2):100-103
[18]LI X D, JIA R, LI P S, et al.Response surface analysis for enzymatic decolorization of Congo red by manganese peroxidase[J].Journal of Molecular Catalysis B: Enzymatic, 2009, 56(1):1-6
[19]Ferreira S L, Bruns R E, Ferreira H S, et al.Box-Behnken design: An alternative for the optimization of analytical methods[J].Analytica Chimica Acta, 2007, 597(2):179-186
[20]Quanhong L, Caili F.Application of response surface methodology for extraction optimization of germinant pumpkin seeds protein[J].Food Chemistry, 2005, 92(4):701-706
[21]焦纬洲, 刘有智, 上官民, 等.甲醇乳化柴油分散特性的研究[J].燃料化学学报, 2011, 39(4):311-314
[22]张欣然, 李伟光, 公绪金, 等.紫外氯耦合处理饮用水中氨氮的响应面优化[J].化工学报, 2014, 65(3):1049-1055
[23]G G José, S Verónica, T Ignacio, et al.Sonochemical Treatment of Water Polluted by Chlorinated[J].Water, 2010, 2(1):28-74
[24] 李彦威.在线超声间接电氧化合成苯甲醛及其衍生物的过程和机理研究[D].太原理工大学, 2006.
[25]V K Tyagi, S L Lo, L Appels, et al.Ultrasonic Treatment of Waste Sludge: A Review on Mechanisms and Applications[J].Critical Reviews in Environmental Science and Technology, 2014, 44(11):1220-1288
[26]YING W, LONGBAO Z, HEWU W.Diesel emission improvements by the use of oxygenated DMEdiesel blend fuels[J].Atmospheric Environment, 2006, 40(13):2313-2320
[27] Li M K, Fogler H S.Acoustic Emulsification Part I. The Instability of Oil-Water Interface to Form the Initial Droplets[J].Journal of Fluid Mechanics, 1978, 88:499-511
[28] 何学良, 詹永厚, 李疏松.内燃机燃料[M]. 北京:中国石化出版社, 1999. 336-338.
[29] Xiong, Chun-hua; AN, Gao-jun; LU, Chang-bo, et al.Study on Microstructure and Combustion-explosion Properties of Micro-emulsified Diesel with Different Cosurfactants [J].Procedia Engineering, 2014, 84:402-411
[30] S Y. Tang, K.W. Tan, M. Sivakumar.. Ultrasound cavitation as a green processing technique in the design and manufacture of pharmaceutical nano-emulsions in drug delivery system [J].Green Chemistry for Environmental Remediation, 2012, :153-208
