反应精馏隔壁塔制甲缩醛过程模拟与分析
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摘要
甲缩醛(methylal)是一种重要的化工基本原料,广泛应用于化工中间体、溶剂、涂料及燃料添加剂等的生产中。目前,反应精馏技术是用于以甲醇和甲醛为原料制取甲缩醛的主要方法。利用Aspen Plus过程模拟软件模拟了常规的双进料甲缩醛反应精馏工艺流程,同时提出并模拟了反应精馏隔壁塔(RDWC)工艺制备甲缩醛的流程,通过对比来探究RDWC流程的优越性。结果表明,采用RDWC制备甲缩醛可避免中间组分在塔内的返混效应,同时可使年度总费用降低8.09%,显著提高过程的经济性。
Methylal is an important raw material used for the production of chemical intermediates, solvents, paints and fuel additives, etc. At present, reactive distillation technology is the main method for preparing methylal from methanol and formaldehyde.In this work, the reactive distillation with a dividing-wall column for producing methylal was proposed and simulated. The results show that the preparation of methylal by such a process can avoid the back mixing effect of the middle component in the column and reduce the total cost by 8.09% annually, then significantly improve the economics of the process.
Methylal is an important raw material used for the production of chemical intermediates, solvents, paints and fuel additives, etc. At present, reactive distillation technology is the main method for preparing methylal from methanol and formaldehyde.In this work, the reactive distillation with a dividing-wall column for producing methylal was proposed and simulated. The results show that the preparation of methylal by such a process can avoid the back mixing effect of the middle component in the column and reduce the total cost by 8.09% annually, then significantly improve the economics of the process.
引文
[1]Masamoto J,Matsuzaki K.Development of methylal synthesis by reactive distillation[J].Journal of Chemical Engineering of Japan,1994,27(1):1-5.
[2]Kolah A K,Mahajani S M,Sharma M M.Acetalization of formaldehyde with methanol in batch and continuous reactive distillation columns[J].Industrial&Engineering Chemistry Research,1996,35(10):3707-3720.
[3]Masamoto J,Ohtake J,Kawamura M.Process for producing formaldehyde and derivatives thereof:US4967014[P].1990.
[4]Sun J,Li H,Song H,et al.Synthesis of methylal from methanol and formaldehyde catalyzed by Br?nsted acid ionic liquids with different alkyl groups[J].RSC Advances,2015,5(106):87200-87205.
[5]Yuan Y,Liu H,Imoto H,et al.Selective synthesis of methylal from methanol on a new crystalline SbRe2O6catalyst[J].Chemistry Letters,2000,29(6):674-675.
[6]Liu H,Iglesia E.Selective one-step synthesis of dimethoxymethane via methanol or dimethyl ether oxidation on H3+nVn Mo12-nPO40keggin structures[J].The Journal of Physical Chemistry B,2003,107(39):10840-10847.
[7]Tanaka Y,Yamamoto S.Method of refining methylal:1160392[P].1997.
[8]Wang Q,Yu B,Xu C.Design and control of distillation system for methylal/methanol separation(Ⅰ):Extractive distillation using DMF as an entrainer[J].Industrial&Engineering Chemistry Research,2012,51(3):1281-1292.
[9]Xia M,Yu B,Wang Q,et al.Design and control of extractive dividing-wall column for separating methylal-methanol mixture[J].Industrial&Engineering Chemistry Research,2012,51(49):16016-16033.
[10]Hasse H,Drunsel J O,Burger J,et al.Process for the production of pure methylal:EP2450336[P].2016.
[11]Yu B,Wang Q,Xu C.Design and control of distillation system for methylal/methanol separation(Ⅱ):Pressure swing distillation with full heat integration[J].Industrial&Engineering Chemistry Research,2012,51(3):1293-1310.
[12]Xia M,Xin Y,Luo J,et al.Temperature control for extractive dividing-wall column with an adjustable vapor split:methylal/methanol azeotrope separation[J].Industrial&Engineering Chemistry Research,2013,52(50):17996-18013.
[13]Zhang X,Zhang S,Jian C.Synthesis of methylal by catalytic distillation[J].Chemical Engineering Research and Design,2011,89(6):573-580.
[14]Laird T.Advanced distillation technologies:design,control and applications[J].Organic Process Research&Development,2013,17(8):1074.
[15]Dejanovi?I,Matija?evi?L,Oluji??.Dividing wall column-a breakthrough towards sustainable distilling[J].Chemical Engineering and Processing:Process Intensification,2010,49(6):559-580.
[16]Yildirim?,Kiss A A,Kenig E Y.Dividing wall columns in chemical process industry:a review on current activities[J].Separation and Purification Technology,2011,80(3):403-417.
[17]Hernández S,Sandoval-Vergara R,Barroso-Mu?oz F O,et al.Reactive dividing wall distillation columns:simulation and implementation in a pilot plant[J].Chemical Engineering and Processing:Process Intensification,2009,48(1):250-258.
[18]Kiss A A,Pragt J,van Strien C.Reactive dividing-wall columns:towards enhanced process integration[J].Distillation&Absorption,IChemE,Eindhoven,The Netherlands,2010,32(1):253-258.
[19]Kuhnert C,Albert M,Breyer S,et al.Phase equilibrium in formaldehyde containing multicomponent mixtures:experimental results for fluid phase equilibria of(formaldehyde+(water or methanol)+methylal))and(formaldehyde+water+methanol+methylal)and comparison with predictions[J].Industrial&Engineering Chemistry Research,2006,45(14):5155-5164.
[20]Drunsel J O,Renner M,Hasse H.Experimental study and model of reaction kinetics of heterogeneously catalyzed methylal synthesis[J].Chemical Engineering Research and Design,2012,90(5):696-703.
[21]González R,Fuhrmeister R,Sudhoff D,et al.Optimal design of catalytic distillation columns:a case study on synthesis of TAEE[J].Chemical Engineering Research and Design,2014,92(3):391-404.
[22]Subawalla H,Fair J R.Design guidelines for solid-catalyzed reactive distillation systems[J].Industrial&Engineering Chemistry Research,1999,38(10):3696-3709.
[23]Behrens M.Hydrodynamics and mass transfer of modular catalytic structured packing[D].TU Delft:Delft University of Technology,2006.
[24]Luyben W L,Yu C C.Reactive Distillation Design and Control[M].New York:John Wiley&Sons Inc.,2009:31-54.
[25]Douglas J M.Conceptual Design of Chemical Processes[M].New York:McGraw-Hill,1988:265-291.
[26]Turton R,Bailie R C,WHITING W B,et al.Analysis,Synthesis and Design of Chemical Processes[M].New Jersey:Pearson Education,Inc.,2012:205-254.
[27]Arfaj M A,Luyben W L.Control study of ethyl tert-butyl ether reactive distillation[J].Industrial&Engineering Chemistry Research,2002,41(16):3784-3796.
[28]Wang S J,Cheng S H,Chiu P H,et al.Design and control of a thermally coupled reactive distillation process synthesizing diethyl carbonate[J].Industrial&Engineering Chemistry Research,2014,53(14):5982-5995.
[2]Kolah A K,Mahajani S M,Sharma M M.Acetalization of formaldehyde with methanol in batch and continuous reactive distillation columns[J].Industrial&Engineering Chemistry Research,1996,35(10):3707-3720.
[3]Masamoto J,Ohtake J,Kawamura M.Process for producing formaldehyde and derivatives thereof:US4967014[P].1990.
[4]Sun J,Li H,Song H,et al.Synthesis of methylal from methanol and formaldehyde catalyzed by Br?nsted acid ionic liquids with different alkyl groups[J].RSC Advances,2015,5(106):87200-87205.
[5]Yuan Y,Liu H,Imoto H,et al.Selective synthesis of methylal from methanol on a new crystalline SbRe2O6catalyst[J].Chemistry Letters,2000,29(6):674-675.
[6]Liu H,Iglesia E.Selective one-step synthesis of dimethoxymethane via methanol or dimethyl ether oxidation on H3+nVn Mo12-nPO40keggin structures[J].The Journal of Physical Chemistry B,2003,107(39):10840-10847.
[7]Tanaka Y,Yamamoto S.Method of refining methylal:1160392[P].1997.
[8]Wang Q,Yu B,Xu C.Design and control of distillation system for methylal/methanol separation(Ⅰ):Extractive distillation using DMF as an entrainer[J].Industrial&Engineering Chemistry Research,2012,51(3):1281-1292.
[9]Xia M,Yu B,Wang Q,et al.Design and control of extractive dividing-wall column for separating methylal-methanol mixture[J].Industrial&Engineering Chemistry Research,2012,51(49):16016-16033.
[10]Hasse H,Drunsel J O,Burger J,et al.Process for the production of pure methylal:EP2450336[P].2016.
[11]Yu B,Wang Q,Xu C.Design and control of distillation system for methylal/methanol separation(Ⅱ):Pressure swing distillation with full heat integration[J].Industrial&Engineering Chemistry Research,2012,51(3):1293-1310.
[12]Xia M,Xin Y,Luo J,et al.Temperature control for extractive dividing-wall column with an adjustable vapor split:methylal/methanol azeotrope separation[J].Industrial&Engineering Chemistry Research,2013,52(50):17996-18013.
[13]Zhang X,Zhang S,Jian C.Synthesis of methylal by catalytic distillation[J].Chemical Engineering Research and Design,2011,89(6):573-580.
[14]Laird T.Advanced distillation technologies:design,control and applications[J].Organic Process Research&Development,2013,17(8):1074.
[15]Dejanovi?I,Matija?evi?L,Oluji??.Dividing wall column-a breakthrough towards sustainable distilling[J].Chemical Engineering and Processing:Process Intensification,2010,49(6):559-580.
[16]Yildirim?,Kiss A A,Kenig E Y.Dividing wall columns in chemical process industry:a review on current activities[J].Separation and Purification Technology,2011,80(3):403-417.
[17]Hernández S,Sandoval-Vergara R,Barroso-Mu?oz F O,et al.Reactive dividing wall distillation columns:simulation and implementation in a pilot plant[J].Chemical Engineering and Processing:Process Intensification,2009,48(1):250-258.
[18]Kiss A A,Pragt J,van Strien C.Reactive dividing-wall columns:towards enhanced process integration[J].Distillation&Absorption,IChemE,Eindhoven,The Netherlands,2010,32(1):253-258.
[19]Kuhnert C,Albert M,Breyer S,et al.Phase equilibrium in formaldehyde containing multicomponent mixtures:experimental results for fluid phase equilibria of(formaldehyde+(water or methanol)+methylal))and(formaldehyde+water+methanol+methylal)and comparison with predictions[J].Industrial&Engineering Chemistry Research,2006,45(14):5155-5164.
[20]Drunsel J O,Renner M,Hasse H.Experimental study and model of reaction kinetics of heterogeneously catalyzed methylal synthesis[J].Chemical Engineering Research and Design,2012,90(5):696-703.
[21]González R,Fuhrmeister R,Sudhoff D,et al.Optimal design of catalytic distillation columns:a case study on synthesis of TAEE[J].Chemical Engineering Research and Design,2014,92(3):391-404.
[22]Subawalla H,Fair J R.Design guidelines for solid-catalyzed reactive distillation systems[J].Industrial&Engineering Chemistry Research,1999,38(10):3696-3709.
[23]Behrens M.Hydrodynamics and mass transfer of modular catalytic structured packing[D].TU Delft:Delft University of Technology,2006.
[24]Luyben W L,Yu C C.Reactive Distillation Design and Control[M].New York:John Wiley&Sons Inc.,2009:31-54.
[25]Douglas J M.Conceptual Design of Chemical Processes[M].New York:McGraw-Hill,1988:265-291.
[26]Turton R,Bailie R C,WHITING W B,et al.Analysis,Synthesis and Design of Chemical Processes[M].New Jersey:Pearson Education,Inc.,2012:205-254.
[27]Arfaj M A,Luyben W L.Control study of ethyl tert-butyl ether reactive distillation[J].Industrial&Engineering Chemistry Research,2002,41(16):3784-3796.
[28]Wang S J,Cheng S H,Chiu P H,et al.Design and control of a thermally coupled reactive distillation process synthesizing diethyl carbonate[J].Industrial&Engineering Chemistry Research,2014,53(14):5982-5995.