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Hans Hasse - One of the best experts on this subject based on the ideXlab platform.
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Chemical Equilibrium and Reaction Kinetics of the Heterogeneously Catalyzed Formation of Poly(oxymethylene) Dimethyl Ethers from Methylal and Trioxane
2016Co-Authors: Jakob Burger, Eckhard Ströfer, Hans HasseAbstract:Poly(oxymethylene) dimethyl ethers (OMEs) are attractive components for tailoring diesel fuels. They belong to the group of oxygenates that reduce soot formation in the combustion when added to diesel fuels and can be produced on a large scale based on Gas-to-Liquid Technology. This work deals with a particularly favorable route for their large scale production in which they are formed from methylal and trioxane. Reaction kinetics and chemical equilibrium of the OME formation via this route were studied in a batch reactor using the ion-exchange resin Amberlyst 46 as heterogeneous catalyst at temperatures between 323 and 363 K and for a wide range of feed compositions. An adsorption-based kinetic model is presented that represents both reaction kinetics and equilibrium well
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production process for diesel fuel components poly oxymethylene dimethyl ethers from methane based products by hierarchical optimization with varying model depth
Chemical Engineering Research & Design, 2013Co-Authors: Jakob Burger, Eckhard Strofer, Hans HasseAbstract:Abstract Poly(oxymethylene) dimethyl ethers (OMEs) are attractive components for tailoring diesel fuels. They belong to the group of oxygenates that reduce soot formation in the combustion when added to diesel fuels and can be produced on a large scale from methane-based products. This opens a new route for Gas-to-Liquid Technology. The present work deals with a particularly favorable route for the large scale production in which OMEs are formed from methylal and trioxane. An OME process based on these educts is designed using two process models of varying depth. In a hierarchical optimization, in which the optimum obtained with a reduced model is used as a starting point for the optimization with the detailed model, an optimal design is found. The resulting design is further adopted to practical needs including a possibility of side-product purge. This work shows that OME production from methylal and trioxane is feasible with Technology that could be used in very large scales. The physical property model that is required for the design of the OME process is described in the present work. It is based on literature data on thermo-physical properties and reaction data from previous work of our group. That database is complemented in the present work by measurements of the density of pure OMEs and the vapor–liquid equilibrium in the system (dioxymethylene dimethyl ether + trioxane).
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chemical equilibrium and reaction kinetics of the heterogeneously catalyzed formation of poly oxymethylene dimethyl ethers from methylal and trioxane
Industrial & Engineering Chemistry Research, 2012Co-Authors: Jakob Burger, Eckhard Strofer, Hans HasseAbstract:Poly(oxymethylene) dimethyl ethers (OMEs) are attractive components for tailoring diesel fuels. They belong to the group of oxygenates that reduce soot formation in the combustion when added to diesel fuels and can be produced on a large scale based on Gas-to-Liquid Technology. This work deals with a particularly favorable route for their large scale production in which they are formed from methylal and trioxane. Reaction kinetics and chemical equilibrium of the OME formation via this route were studied in a batch reactor using the ion-exchange resin Amberlyst 46 as heterogeneous catalyst at temperatures between 323 and 363 K and for a wide range of feed compositions. An adsorption-based kinetic model is presented that represents both reaction kinetics and equilibrium well.
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poly oxymethylene dimethyl ethers as components of tailored diesel fuel properties synthesis and purification concepts
Fuel, 2010Co-Authors: Jakob Burger, Eckhard Strofer, Markus Siegert, Hans HasseAbstract:Poly(oxymethylene) dimethyl ethers (POMDMEs) open a new route for tailoring diesel fuels. POMDMEs belong to the group of oxygenates which reduce soot formation in the combustion when added to diesel fuels. They can be produced on a large scale based on Gas-to-Liquid Technology. The present work first gives an overview of oxygenates as components of diesel fuels and process Technology for their production. Then properties and chemistry of POMDMEs are discussed in detail. A particularly favorable route for their large scale production in which they are formed from methylal and trioxane is proposed and a feasible concept for this process is presented together with data on the reaction equilibrium that was taken in a batch reactor.
Jakob Burger - One of the best experts on this subject based on the ideXlab platform.
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Chemical Equilibrium and Reaction Kinetics of the Heterogeneously Catalyzed Formation of Poly(oxymethylene) Dimethyl Ethers from Methylal and Trioxane
2016Co-Authors: Jakob Burger, Eckhard Ströfer, Hans HasseAbstract:Poly(oxymethylene) dimethyl ethers (OMEs) are attractive components for tailoring diesel fuels. They belong to the group of oxygenates that reduce soot formation in the combustion when added to diesel fuels and can be produced on a large scale based on Gas-to-Liquid Technology. This work deals with a particularly favorable route for their large scale production in which they are formed from methylal and trioxane. Reaction kinetics and chemical equilibrium of the OME formation via this route were studied in a batch reactor using the ion-exchange resin Amberlyst 46 as heterogeneous catalyst at temperatures between 323 and 363 K and for a wide range of feed compositions. An adsorption-based kinetic model is presented that represents both reaction kinetics and equilibrium well
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production process for diesel fuel components poly oxymethylene dimethyl ethers from methane based products by hierarchical optimization with varying model depth
Chemical Engineering Research & Design, 2013Co-Authors: Jakob Burger, Eckhard Strofer, Hans HasseAbstract:Abstract Poly(oxymethylene) dimethyl ethers (OMEs) are attractive components for tailoring diesel fuels. They belong to the group of oxygenates that reduce soot formation in the combustion when added to diesel fuels and can be produced on a large scale from methane-based products. This opens a new route for Gas-to-Liquid Technology. The present work deals with a particularly favorable route for the large scale production in which OMEs are formed from methylal and trioxane. An OME process based on these educts is designed using two process models of varying depth. In a hierarchical optimization, in which the optimum obtained with a reduced model is used as a starting point for the optimization with the detailed model, an optimal design is found. The resulting design is further adopted to practical needs including a possibility of side-product purge. This work shows that OME production from methylal and trioxane is feasible with Technology that could be used in very large scales. The physical property model that is required for the design of the OME process is described in the present work. It is based on literature data on thermo-physical properties and reaction data from previous work of our group. That database is complemented in the present work by measurements of the density of pure OMEs and the vapor–liquid equilibrium in the system (dioxymethylene dimethyl ether + trioxane).
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chemical equilibrium and reaction kinetics of the heterogeneously catalyzed formation of poly oxymethylene dimethyl ethers from methylal and trioxane
Industrial & Engineering Chemistry Research, 2012Co-Authors: Jakob Burger, Eckhard Strofer, Hans HasseAbstract:Poly(oxymethylene) dimethyl ethers (OMEs) are attractive components for tailoring diesel fuels. They belong to the group of oxygenates that reduce soot formation in the combustion when added to diesel fuels and can be produced on a large scale based on Gas-to-Liquid Technology. This work deals with a particularly favorable route for their large scale production in which they are formed from methylal and trioxane. Reaction kinetics and chemical equilibrium of the OME formation via this route were studied in a batch reactor using the ion-exchange resin Amberlyst 46 as heterogeneous catalyst at temperatures between 323 and 363 K and for a wide range of feed compositions. An adsorption-based kinetic model is presented that represents both reaction kinetics and equilibrium well.
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poly oxymethylene dimethyl ethers as components of tailored diesel fuel properties synthesis and purification concepts
Fuel, 2010Co-Authors: Jakob Burger, Eckhard Strofer, Markus Siegert, Hans HasseAbstract:Poly(oxymethylene) dimethyl ethers (POMDMEs) open a new route for tailoring diesel fuels. POMDMEs belong to the group of oxygenates which reduce soot formation in the combustion when added to diesel fuels. They can be produced on a large scale based on Gas-to-Liquid Technology. The present work first gives an overview of oxygenates as components of diesel fuels and process Technology for their production. Then properties and chemistry of POMDMEs are discussed in detail. A particularly favorable route for their large scale production in which they are formed from methylal and trioxane is proposed and a feasible concept for this process is presented together with data on the reaction equilibrium that was taken in a batch reactor.
Eckhard Strofer - One of the best experts on this subject based on the ideXlab platform.
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production process for diesel fuel components poly oxymethylene dimethyl ethers from methane based products by hierarchical optimization with varying model depth
Chemical Engineering Research & Design, 2013Co-Authors: Jakob Burger, Eckhard Strofer, Hans HasseAbstract:Abstract Poly(oxymethylene) dimethyl ethers (OMEs) are attractive components for tailoring diesel fuels. They belong to the group of oxygenates that reduce soot formation in the combustion when added to diesel fuels and can be produced on a large scale from methane-based products. This opens a new route for Gas-to-Liquid Technology. The present work deals with a particularly favorable route for the large scale production in which OMEs are formed from methylal and trioxane. An OME process based on these educts is designed using two process models of varying depth. In a hierarchical optimization, in which the optimum obtained with a reduced model is used as a starting point for the optimization with the detailed model, an optimal design is found. The resulting design is further adopted to practical needs including a possibility of side-product purge. This work shows that OME production from methylal and trioxane is feasible with Technology that could be used in very large scales. The physical property model that is required for the design of the OME process is described in the present work. It is based on literature data on thermo-physical properties and reaction data from previous work of our group. That database is complemented in the present work by measurements of the density of pure OMEs and the vapor–liquid equilibrium in the system (dioxymethylene dimethyl ether + trioxane).
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chemical equilibrium and reaction kinetics of the heterogeneously catalyzed formation of poly oxymethylene dimethyl ethers from methylal and trioxane
Industrial & Engineering Chemistry Research, 2012Co-Authors: Jakob Burger, Eckhard Strofer, Hans HasseAbstract:Poly(oxymethylene) dimethyl ethers (OMEs) are attractive components for tailoring diesel fuels. They belong to the group of oxygenates that reduce soot formation in the combustion when added to diesel fuels and can be produced on a large scale based on Gas-to-Liquid Technology. This work deals with a particularly favorable route for their large scale production in which they are formed from methylal and trioxane. Reaction kinetics and chemical equilibrium of the OME formation via this route were studied in a batch reactor using the ion-exchange resin Amberlyst 46 as heterogeneous catalyst at temperatures between 323 and 363 K and for a wide range of feed compositions. An adsorption-based kinetic model is presented that represents both reaction kinetics and equilibrium well.
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poly oxymethylene dimethyl ethers as components of tailored diesel fuel properties synthesis and purification concepts
Fuel, 2010Co-Authors: Jakob Burger, Eckhard Strofer, Markus Siegert, Hans HasseAbstract:Poly(oxymethylene) dimethyl ethers (POMDMEs) open a new route for tailoring diesel fuels. POMDMEs belong to the group of oxygenates which reduce soot formation in the combustion when added to diesel fuels. They can be produced on a large scale based on Gas-to-Liquid Technology. The present work first gives an overview of oxygenates as components of diesel fuels and process Technology for their production. Then properties and chemistry of POMDMEs are discussed in detail. A particularly favorable route for their large scale production in which they are formed from methylal and trioxane is proposed and a feasible concept for this process is presented together with data on the reaction equilibrium that was taken in a batch reactor.
K. Paymooni - One of the best experts on this subject based on the ideXlab platform.
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a novel water perm selective membrane dual type reactor concept for fischer tropsch synthesis of gtl gas to liquid Technology
Energy, 2011Co-Authors: M R Rahimpour, A. Mirvakili, K. PaymooniAbstract:Abstract The present study proposes a novel configuration of Fischer–Tropsch synthesis (FTS) reactors in which a fixed-bed water perm-selective membrane reactor is followed by a fluidized-bed hydrogen perm-selective membrane reactor. This novel concept which has been named fixed-bed membrane reactor followed by fluidized-bed membrane reactor (FMFMDR) produces gasoline from synthesis gas. The walls of the tubes of a fixed-bed reactor (water-cooled reactor) of FMFMDR configuration are coated by a high water perm-selective membrane layer. In this new configuration, two membrane reactors instead of one membrane reactor are developed for FTS reactions. In other words, two different membrane layers are used. In order to investigate the performance of FMFMDR, a one-dimensional heterogeneous model is taken into consideration. The simulation results of three schemes named fluidized-bed membrane dual-type reactor (FMDR), FMFMDR and conventional fixed-bed reactor (CR) are presented. They have been compared in terms of temperature, gasoline and CO 2 yields, H 2 and CO conversions and the water permeation rate through the membrane layer. Results show that the gasoline yield in FMFMDR is higher than the one in FMDR. The FMFMDR configuration not only decreases the undesired product such as CO 2 but also produces more gasoline.
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simultaneous hydrogen production and utilization via coupling of fischer tropsch synthesis and decalin dehydrogenation reactions in gtl Technology
International Journal of Hydrogen Energy, 2011Co-Authors: M R Rahimpour, A. Mirvakili, K. PaymooniAbstract:Abstract A thermally coupled membrane dual-type reactor (TCMDR) has been proposed for simultaneous hydrogen production and utilization in Gas-to-Liquid Technology (GTL). Decalin dehydrogenation reaction is coupled with Fischer–Tropsch synthesis (FTS) reaction to improve the heat transfer between endothermic and exothermic sides. Furthermore, Pd–Ag and Hydroxy Sodalite membrane layers are assisted in TCMDR to improve the mass transfer between exothermic/endothermic side and permeation side. Some of the produced hydrogen via decalin dehydrogenation reaction is utilized in FTS reaction and the other is extracted and stored. The modeling results show 95% hydrogen production and 5% hydrogen utilization in FTS reactions in the exothermic reaction side of TCMDR configuration. The performance of TCMDR is compared with the one of conventional reactor (CR) and fluidized-bed membrane dual-type reactor (FMDR). Moreover, the gasoline yield in TCMDR increases about 17% and 29% in comparison with the one in FMDR and CR, respectively. The enhancement in gasoline and hydrogen yields demonstrates the superiority of TCMDR to the previous reactors.
M R Rahimpour - One of the best experts on this subject based on the ideXlab platform.
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a novel water perm selective membrane dual type reactor concept for fischer tropsch synthesis of gtl gas to liquid Technology
Energy, 2011Co-Authors: M R Rahimpour, A. Mirvakili, K. PaymooniAbstract:Abstract The present study proposes a novel configuration of Fischer–Tropsch synthesis (FTS) reactors in which a fixed-bed water perm-selective membrane reactor is followed by a fluidized-bed hydrogen perm-selective membrane reactor. This novel concept which has been named fixed-bed membrane reactor followed by fluidized-bed membrane reactor (FMFMDR) produces gasoline from synthesis gas. The walls of the tubes of a fixed-bed reactor (water-cooled reactor) of FMFMDR configuration are coated by a high water perm-selective membrane layer. In this new configuration, two membrane reactors instead of one membrane reactor are developed for FTS reactions. In other words, two different membrane layers are used. In order to investigate the performance of FMFMDR, a one-dimensional heterogeneous model is taken into consideration. The simulation results of three schemes named fluidized-bed membrane dual-type reactor (FMDR), FMFMDR and conventional fixed-bed reactor (CR) are presented. They have been compared in terms of temperature, gasoline and CO 2 yields, H 2 and CO conversions and the water permeation rate through the membrane layer. Results show that the gasoline yield in FMFMDR is higher than the one in FMDR. The FMFMDR configuration not only decreases the undesired product such as CO 2 but also produces more gasoline.
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simultaneous hydrogen production and utilization via coupling of fischer tropsch synthesis and decalin dehydrogenation reactions in gtl Technology
International Journal of Hydrogen Energy, 2011Co-Authors: M R Rahimpour, A. Mirvakili, K. PaymooniAbstract:Abstract A thermally coupled membrane dual-type reactor (TCMDR) has been proposed for simultaneous hydrogen production and utilization in Gas-to-Liquid Technology (GTL). Decalin dehydrogenation reaction is coupled with Fischer–Tropsch synthesis (FTS) reaction to improve the heat transfer between endothermic and exothermic sides. Furthermore, Pd–Ag and Hydroxy Sodalite membrane layers are assisted in TCMDR to improve the mass transfer between exothermic/endothermic side and permeation side. Some of the produced hydrogen via decalin dehydrogenation reaction is utilized in FTS reaction and the other is extracted and stored. The modeling results show 95% hydrogen production and 5% hydrogen utilization in FTS reactions in the exothermic reaction side of TCMDR configuration. The performance of TCMDR is compared with the one of conventional reactor (CR) and fluidized-bed membrane dual-type reactor (FMDR). Moreover, the gasoline yield in TCMDR increases about 17% and 29% in comparison with the one in FMDR and CR, respectively. The enhancement in gasoline and hydrogen yields demonstrates the superiority of TCMDR to the previous reactors.