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乙二醇的制备项目分析:关于乙二醇的制备,分析可得包括乙二醇的工艺技术与经济发展,以及生产中所涉及的技术。1.孙玉净,于春梅.我国煤制乙二醇产业化现状与前景.化学工业,2012年1期(主题检索)摘要:介绍了我国煤制乙二醇技术水平及其项目进展情况。经过经济分析与对比,得出该方法对传统石油法乙二醇工艺具有一定成本优势,但与中东乙烷等为原料的乙二醇相比,成本不占优势。如果今后褐煤价格上升,将增加更多变数。为此提出了有益的建议。2.周张锋,李兆基,潘鹏斌,林凌,覃业燕,姚元根.煤制乙二醇技术进展.化工进展,2010,29(11) (主题检索)摘要:综述了目前乙二醇生产工艺技术的现状和发展动向,指出了石油乙烯路线是目前乙二醇工业生产的主要工艺。同时,着重介绍了中国科学院福建物质结构研究所与企业合作,率先在国内外实现工业化的煤制乙二醇的成套技术.该技术符合我国缺油、少气、煤炭资源相对丰富的资源特点,可利用煤炭资源生产乙二醇,代替目前的石油乙烯路线,将有效缓解我国乙二醇产品供需矛盾,逐步实现我国以煤代油生产乙二醇的战略目标,节省大量石油资源,对国家的能源和化工产业产生重要积极影响,代表了当今煤化工领域的前沿发展方向之一。3.许茜,王保伟,许根慧.乙二醇合成工艺的研究进展.石油化工,2007,36(2) (主题检索)摘要:对国内外乙二醇合成的传统工艺:直接水合法、催化水合法和碳酸乙烯酯法进行了介绍;对乙二醇合成的新工艺,包括乙二醇和碳酸二甲酯联产法和C1化学法的工艺流程和发展前景进行了综述,其中,C1化学法主要分为乙烯合成法、合成气合成法和甲醛、甲醇合成法.作为合成气合成法之一的合成气偶联合成法,具有工艺要求不高、反应条件温和等优点,是目前最有希望大规模工业化生产乙二醇的工艺路线。4.华强,刘定华,马正飞,刘晓勘,姚虎卿.催化水合法合成乙二醇.石油化工,2003,32(4)(关键词检索)摘要:针对目前直接水合法生产乙二醇设备大、能耗高的状况,采用催化水合法合成乙二醇,并探讨了催化剂用量、水/环氧乙烷质量比、反应温度、压力等因素对反应的影响,得到水/环氧乙烷质量比为4/1时的较佳反应条件范围:催化剂质量分数不小于6%;反应温度大于45;反应压力大于0.5 MPa.在此工艺条件范围内,环氧乙烷的转化率99.8%以上,乙二醇的选择性99%以上。5.徐敏燕 李速延,高超,左满宏,刘恩莉.乙二醇合成技术现状.天津化工,2011,25(2) (关键词检索)摘要:概述了国内外制乙二醇的石油路线和非石油路线。着重介绍了由合成气经草酸酯加氢制乙二醇技术的非石油路线基本原理及催化剂研究现状。针对国内能源特点,认为由合成气经草酸酯加氢制乙二醇是一条合理、有效、最有可能成功实现产业化的路线。6.陈健,王浩,刘定华,刘晓勤.碳酸乙烯酯法合成乙二醇新工艺中催化剂分离的研究.石油化工,2010,39(6) (关键词检索)摘要:为促进碳酸乙烯酯法合成乙二醇(EG)新工艺的工业化应用,测定了不同组成NY-2催化剂-EG-二甘醇(DEG) 三组分物系的黏度和密度等分离单元所需的物性数据,该三组分物系的黏度和密度均随温度的升高而减小,黏度与温度呈非线性关系,密度与温度呈线性关系,通过测定NY-2催化剂在EG-DEG混合溶剂中的溶解度,计算NY-2催化剂的回收率,并考察了回收后NY-2催化剂的活性.实验结果表明,可采用冷却结晶的方法回收NY-2催化剂,为保证NY-2催化剂的回收率大于75%,精馏塔塔釜采出液中DEG的质量分数应大于80%.精馏塔塔釜温度过高将影响回收的NY-2催化剂活性;与新鲜NY-2催化剂相比,要使回收的NY-2催化剂的环氧乙烷转化率降幅小于10%,精馏塔塔釜温度应低于180 。7.丁国荣,赵庆国.碳酸乙烯酯法合成乙二醇技术概述.化工科技市场,2005,28(9) (关键词检索)摘要:本文概述了乙二醇和碳酸二甲酯联产法和碳酸乙烯酯水解法2种碳酸乙烯酯法合成乙二醇的技术情况,并提出了建议。8.朱培玉,李扬,王永宏.乙二醇生产新技术研究进展.化工进展,2002,21(10)(关键词检索)摘要:对乙二醇生产新技术进行了介绍,并对各公司新技术的工艺条件、反应转化率、选择性进行了对比,重点对乙二醇和碳酸二甲酯联产技术的优势进行了分析。充分利用环氧乙烷装置排放的二氧化碳来合成碳酸乙烯酯,然后进一步与甲醇反应合成乙二醇和碳酸二甲酯。该工艺路线不仅大大降低了生产成本,而且获得了高附加值环保型产品碳酸二甲酯,因而具有很好的发展前景。9.董平,邵伟,赵辉.天然气路线合成乙二醇技术进展.化工科技市场,2008,31(8) (关键词检索)摘要:综述了天然气路线合成乙二醇(EG)的方法,包括合成气直接和间接合成法、甲醇法、甲醛法等,并对这些方法的工艺特点进行了评述。10.唐永良.环氧乙烷催化法合成乙二醇的研究进展.合成纤维,2005,34(11)(关键词检索)摘要:对环氧乙烷催化法合成乙二醇研究的最新进展作了综述。阐述了用于环氧乙烷催化水合反应中的多羧酸衍生物催化体系、离子交换树脂催化体系、大环螯合物催化体系、季鏻盐催化体系、多相水滑石型催化体系及其他催化体系近年来的研究进展;同时阐述了用于碳酸亚乙酯法合成乙二醇反应中的催化体系的新进展。11.何立,肖含,李应成.乙二醇合成技术研究进展.工业催化,2006,14(6)(篇名检索)摘要:综述了由环氧乙烷制乙二醇、环氧乙烷经碳酸乙烯酯制乙二醇、环氧乙烷催化水合制乙二醇及以合成气制乙二醇研究进展。由环氧乙烷制乙二醇合成方法具有能耗低、选择性好和收率高优点,目前主要采用阴离子交换树脂、卤化季磷盐和氧化铌等催化剂.以合成气为原料制乙二醇包括甲醇二聚法、甲醛电化加氢二聚法以及以一氧化碳和低碳醇为原料的氧化偶联法等.对各催化体系进行了比较分析,并指出了目前催化体系所存在的问题及发展方向。12.徐安阳,杜蕾,陈学玺.甲醇与甲醛合成乙二醇的研究.精细石油化工进展,2009,10(10) (篇名检索)摘要:以甲醇与甲醛为原料,选择二叔丁基过氧化物(DTBP)和过氧化二异丙苯(DCP)分别作为引发剂进行缩合反应,制得乙二醇.考察了引发剂用量、反应温度、反应时间、甲醇与甲醛质量比、引发剂加入速度对反应产物的影响,优化了合成线路,使过程简单可行,产率提高.同时对DTBP的合成进行改进,达到了降低成本,清洁生产的目的.确定了以DCP为引发剂合成乙二醇的最佳工艺条件:DCP用量2%,甲醇与甲醛质量比101,反应温度145 ,反应时间3 h.以DTBP为引发剂合成乙二醇的最佳工艺条件:反应温度145 ,反应时间4 h,甲醇与甲醛质量比81,DTBP用量2.5%,引发剂加入速度0.05 mL/min,在此条件下产物中乙二醇含量可达9.65%。13.尹进华,徐安阳,牛伟玮,杜蕾,陈学玺.一步法合成乙二醇的工艺研究.化学与生物工程,2010,27(6) (篇名检索)摘要:以二叔丁基过氧化物(DTBP)为引发剂,以甲醇和甲醛为原料,采用一步法合成了乙二醇。考察了引发剂用量、反应温度、反应时间、甲醇与甲醛的质量比对一步法合成乙二醇的影响。确定一步法合成乙二醇的最优工艺条件为:反应温度200、反应时间4 h、甲醇与甲醛的质量比21、引发剂用量(以原料总质量计)3%,主要产物为乙二醇和二乙二醇,其中乙二醇含量达到6.51%。14. 章洪良.环氧乙烷直接催化水合制乙二醇的研究.石油化工技术与经济,2009,25(5) (篇名检索)摘要:环氧乙烷非催化水合法是目前工业规模生产乙二醇的方法,但此工艺存在选择性偏低、流程长、能耗大等缺点,而采用环氧乙烷直接催化水合技术则可大大降低能耗,提高乙二醇的选择性.文章综述了国内外主要大公司及相关科研机构对环氧乙烷直接催化水合技术的研究成果,对国内的研究水平进行了介绍并论述了进一步的开发方向。15.李应成,杨为民,谢在库,陈庆龄.Nb2O5/-Al2O3催化环氧乙烷水合制乙二醇研究.工业催化,2005,13(8)(查找题目)摘要:制备了Nb2O5/-Al2O3催化剂并用于环氧乙烷水合制乙二醇反应,研究了反应条件对Nb2O5/-Al2O3反应性能的影响,对催化剂的酸性进行了初步研究.在与工业生产乙二醇结果相近的情况下,使用Nb2O5/-Al2O3催化剂,反应物床层停留时间由2030 min缩短为2 min.而1 000 h寿命试验结果表明,该催化剂反应性能稳定,催化剂表征亦说明其具有良好的结构稳定性。16. 环氧乙烷催化水合制乙二醇模试研究(查找题目)乙二醇是一种重要有机化工原料,目前国内外乙二醇的工业生产方法以环氧乙烷直接水合法为主,虽然它工艺成熟,但水比大、能耗高、选择性低。为此从20世纪70年代起,世界上许多公司进行了环氧乙烷催化水合生产乙二醇技术的研究和开发工作,该技术水比低、转化率高、选择性高,对比非催化水合法该工艺更节能,是乙二醇生产技术的发展趋势。本文在环氧乙烷催化水合制乙二醇的离子交换树脂催化剂取得小试成功的基础上,进行了催化剂扩大实验研究,并考评了扩试催化剂的性能。分析了环氧乙烷催化水合制乙二醇的反应过程,并在和实际工业生产相仿的条件下实验研究了扩试催化剂的宏观反应动力学,确定了反应器的设计方法。以此为基础,设计了环氧乙烷催化水合制乙二醇的工艺流程,并进行模试实验研究,考评产品质量及催化剂的稳定性、溶胀性等。陈俊,化学工程 硕士201017.贺涛,刘定华,刘晓勤.碳酸乙烯酯催化水解合成乙二醇.化工进展,2008,27(11) (查找题目)摘要:对二步法合成乙二醇(EG)过程的碳酸乙烯酯(EC)催化水解反应进行了研究,考察了水/EC摩尔比、反应温度、催化剂用量(以EC质量计)和反应压力对反应的影响,确定了EC催化水解反应的较佳工艺条件:反应温度160180,水/EC摩尔比2.04.0,催化剂质量分数约2.0%,反应压力范围3.04.0MPa.在以上工艺条件下,原料含有EG时(EG/EC摩尔比O.51.0),反应2h,EC也可完全水解,EG选择性高于98%。18.王艳丽,戴厚良,马正飞,刘定华,刘晓勤,姚虎卿.均相催化水合法合成乙二醇动力学研究.化学反应工程与工艺,2005,21(4) (查找题目)摘要:在反应温度为4575,NY催化剂浓度为0.093 mol/L,水比为610的反应条件下,对均相催化水合法合成乙二醇动力学进行了研究.测定了反应速率常数及反应过程中溶液pH值的变化.依据实验结果,提出了反应机理,建立了反应动力学方程,并利用Levenberg-Marquardt方法回归了动力学参数。研究结果表明:在NY催化剂存在下,均相催化水合法合成乙二醇反应对环氧乙烷浓度是一级反应,其表观活化能为71 113.8 J/mol和指前因子3.05109min-1.相对直接水合法而言,NY催化剂降低了反应的活化能,大大提高了反应速度。19.孙奇,尹芳华,何明阳,高山,陈群.多级固定床反应器串联的环氧乙烷催化水合制乙二醇工艺的研究.石油化工,2009,38(8)(全文检索)摘要:以HCO-3型强碱性阴离子交换树脂为催化剂,采用多级固定床反应器串联的催化水合工艺(简称多级工艺)对环氧乙烷(EO)制乙二醇(EG)的反应进行了研究,并与采用单个固定床反应器的单段工艺进行了对比,考察了水与EO的摩尔比(简称水比)和重时空速对多级工艺中EO转化率和EG选择性的影响.实验结果表明,与单段工艺相比,多级工艺采用多段进料的方式,有效移除反应中放出的热量,降低了催化剂的膨胀率,提高了催化剂的使用寿命;在3个反应器温度分别为77,75,70 、水比为8、重时空速为2.0 h-1、压力为1.0 MPa的条件下,连续运行2 880 h,EO转化率约为99%,EG选择性约为97%。20. 崔小明.我国乙二醇的生产及市场分析.石油化工技术与经济,2010,26(1) (全文检索)摘要:介绍了我国乙二醇合成技术的最新研究和开发进展,重点介绍了环氧乙烷催化水合法和碳酸乙烯酯法以及煤化工制乙二醇的研究进展.虽然我国乙二醇的生产能力发展很快,但仍不能满足市场需求.今后除扩大生产能力外,还应该积极拓展新的应用领域,以促进我国乙二醇产业健康有序发展。21.V.F.Shvets,R.A.Kozlovskiy,I.A.Kozlovskiy,M.G.Makarov,J.P.Suchkov,A.V.Koustov.The Model of Catalytic Reactor of Ethylene Glycol Production Organic process research & development,2005,9(6)(外文文献,检索关键词Glycol preparation process)英文摘要:The ethylene oxide hydration process in a catalytic fixed bed tube reactor was studied.A cross-linked styrene-divinylbenzene anion-exchange resin in the HCO_3-/CO_3(2-) -form was used as a catalyst.The deactivation and swelling of the catalyst during the process were detected.The mathematical model of the reactor with determined parameters adequately describing the rate of the reaction,product distribution and catalyst deactivation and swelling has been developed.22.NaokiOkada,KaoriMisawa,MarikoKitajima,HiromitsuTakayamaChemInform.Abstract: Preparation of Ethylene Glycol Adducts at 2,3Positions of Indoles with Hypervalent Iodine.ChemInform,2008,39卷,第27期(外文文献,检索关键词Glycol preparation process)英文摘要:Abstract10.1002/chin.200827062.absChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere,please select a “Full Text” option.The original article is trackable via the “References”option23.Yingcheng Li,Bin Yue,Shirun Yan,Weimin Yang,Zaiku Xie,Qingling Chen,Heyong He.Preparation of Ethylene Glycol via Catalytic Hydration with Highly Efficient Supported Niobia Catalyst.Catalysis Letters,2004,95卷,第3期(外文文献,检索关键词Glycol preparation process)英文摘要:Abstract Ethylene glycol was prepared by hydration of ethylene oxide over highly efficient supported niobia catalyst prepared by chemical vapor deposition.The catalyst showed much better hydration performance in activity and selectivity than other solid acid catalysts. An ethylene glycol yield of 91% was achieved at optimal conditions24.Franca Podo,George Nemethy,Pietro L.Indovina,Lajos Radics,Vincenza Viti.Conformational studies of ethylene glycol and its two methyl ether derivatives.Molecular Physics,1974,27卷,第2期,521-539 (页码) (外文文献,检索关键词Glycol preparation process)英文摘要:As a theoretical analysis of the conformational equilibria of ethylene glycol,methoxyethanol and dimethoxyethane,the energy of each stable conformational isomer (rotamer) of these molecules was calculated for various temperatures and solvent dielectric constants. Classical semi-empirical potential functions were used.Besides intrinsic potentials for rotation about single bonds,intramolecular dispersion and repulsive interaction,dipole-dipole interaction and hydrogen bonding energies were in cluded.Interaction with the solvent was considered only in terms of a continuous dielectric medium interacting with the local dipoles and quadrupoles of the molecule. For each rotamer,the dihedral angles giving the lowest energy were determined. From the energies of each rotamer,Boltzmann distributions of populations were obtained, and total concentrations were calculated in various physically distinguishable states, e.g. those with and without internal hydrogen bonds,or those in which the central C-C bond takes a trans or a gauche conformation.It is shown that the equilibrium constants, KHB and KTG, for these two cases are not identical. While changes in the dielectric constant may alter strongly the geometries and energies of individual rotamers,their effect on the average geometries and on the two equilibrium constants is small. The same is true of temperature changes, and is due to the presence of several rotamers in each of the physical states considered. Thus the small temperature dependence of some observed physical properties is shown to be consistent with the distribution of molecules over several conformational states. In solution, the fraction of ethylene glycol molecules with two free OH groups (i.e. without an intramolecular hydrogen bond) is predicted to be at least 20 per cent. This shows that the presence of three-dimensional hydrogen-bonded structures in the liquid, which we propose, is possible in principle.25.E Butyrskaya,N Belyakova,M. Rozhkova,L Nechaeva.Extraction of ethylene glycol from aqueous salt solutions. Russian Journal of Physical Chemistry A,2012,86卷,第11期(外文文献,检索关键词Glycol preparation process)英文摘要:AbstractA method is proposed for extracting ethylene glycol from aqueous salt solutions by dialysis through ion-exchange membranes, based on the Donnan exclusion of the electrolyte. Dialysis is performed in the continuous and batch modes. It is found that the batch mode of dialysis is more effective for extracting ethylene glycol from its aqueous salt solutions. The effect of the ionic form of the membrane on ethylene glycol fluxes is explained through computer simulation. 26.Naoto Haruki,Hideo Inaba,Akihiko Horibe,Shinji Tanaka.Viscosity Measurements of Ethylene Glycol Solution with Flow Drag Reduction Additives. Netsu Bussei,2005,19卷,第2期67-72 (页码) (外文文献,检索关键词Glycol preparation process)英文摘要:This paper has dealt with the viscous characteristics of ethylene glycol (EG) solution with flow drag reduction additive. In this study, oleyldihydoroxyetylamineoxide (ODEAO) was used as the flow drag reduction additive, and aqueous solution of EG was used as a secondary refrigerant. The viscosity of EG solution with ODEAO was measured with a rotary rheometer. The experimental pa-rameters of viscosity measurement were temperature of the ODEAO brine, the ODEAO concentra-tion and the EG concentration. From the experimental results, the apparent viscosity of EG solution with ODEAO showed SIS (= the shear induced state). Therefore, the non-linear dependence of shear stress on shear rate was well approximated by the Power-law model under the high shear condition, and pseudoplastic viscosity and index number in each experimental parameter were estimated. And the non-dimensional analysis for flow drag and heat transfer reduction effect of EG solution with ODEAO has been investigated by using this approximation27.MihlyBraun,EdinaSimon,IstvnFbin,BlaTthmrsz.Elemental analysis of pitfalltrapped insect samples: effects of ethylene glycol grades.Entomologia Experimentalis et Applicata,2012,143卷,第1期,89-94 (页码) (外文文献,检索关键词Glycol preparation process)28.B.J.CostaCabral.Condensedphase effects on the conformational equilibrium of ethylene glycol. Int. J. Quantum Chem,1998,60卷,第7期,1651-1660 (页码) (外文文献,检索关键词Glycol preparation process)英文摘要:Abstract10.1002/(SICI)1097-461X(1996)60:73.3.CO;2-TDensity functional calculations for ethylene glycol (CH2OHCH2OH) in the gas and in a dielectric medium are reported. The condensedphase calculations are based on the selfconsistent reaction field approach and the environment has the dielectric constant of liquid methanol. NPT Monte Carlo simulations of ethylene glycol (ETG) in liquid methanol are also reported. The simulations were carried out for three conformers of ETG (tGg, gGg, and tTt). Comparison between SCRF results for the conformational equilibrium in the gas and in the dielectric suggests that the tGg conformer is slightly stabilized relative to the gGg conformer in the solvent. However, the energy difference between them is less the 1.0 kJ/mol, which indicates that frequent interconversions between the tGg and gGg conformers are expected in the condensed phase. The alltrans conformer (tTt) is higher than the most stable conformer in the gas by 14 kJ/mol. Monte Carlo simulations predict that the tGgand gGgconformers have very similar energies in the solvent. However, the simulations also show,in agreement with experimental data, that the tTt conformer is stabilized in liquid methanol,relative to the gas phase. The microscopic mechanism leading to the stabilization of the tTt conformer in the liquid is related to the differential hydrogenbonding formation between the ETG conformers and the methanol molecules. 1996 John Wiley & Sons,Inc.29.V.P.Yadav,S. K. Maity,P. Biswas,R. K.Singh.Kinetics of Esterification of Ethylene Glycol with Acetic Acid Using Cation Exchange Resin Catalyst. Chemical,2011,25卷,第3期(外文文献,检索关键词Glycol preparation process)英文摘要:The esterification o

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