Production of Methanol and Dimethyl ether from biomass derived syngas – a comparison of the different synthesis pathways by means of flowsheet simulation

Gądek, M.; Kubica, R.; Jędrysik, E.

doi:10.1016/b978-0-444-63234-0.50010-5

Cited by 17 publications

(8 citation statements)

References 4 publications

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“…Conventionally, DME is produced directly and indirectly from natural gas. In the direct synthesis of DME, a single step reactor is used for simultaneous methanol production and dehydration [11,12]. Although, the direct synthesis of DME seems to be more efficient, subsequent separation process for ultra-pure DME is complex and highly energy intensive due to presence of the unreacted syngas and produced CO 2 .…”

Section: Dme: An Ultra-clean Renewable Source Of Energymentioning

confidence: 99%

Simultaneous production of dimethyl ether (DME), methyl formate (MF) and hydrogen from methanol in an integrated thermally coupled membrane reactor

Bakhtyari

Mohammadi

Rahimpour

2015

Journal of Natural Gas Science and Engineering

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Section: Dme: An Ultra-clean Renewable Source Of Energymentioning

confidence: 99%

Simultaneous production of dimethyl ether (DME), methyl formate (MF) and hydrogen from methanol in an integrated thermally coupled membrane reactor

Bakhtyari

Mohammadi

Rahimpour

2015

Journal of Natural Gas Science and Engineering

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“…7,38 Various companies have invested in both process routes. Toyo, MGC, Lurgi, Udhe have developed indirect process, 39 and technology development of the direct synthesis of DME has been accomplished by companies such as Haldor Topsøe, JFE Ho., KOGAS, Air product, and NKK. 39,40 In addition to the methanol dehydration reaction (Equation 1), three other main reactions are involved in the direct synthesis of DME, which all take place in the same reactor.…”

Section: Process Descriptionmentioning

confidence: 99%

“…Various companies have invested in both process routes. Toyo, MGC, Lurgi, Udhe have developed indirect process, 39 and technology development of the direct synthesis of DME has been accomplished by companies such as Haldor Topsøe, JFE Ho., KOGAS, Air product, and NKK 39,40 …”

Section: Process Descriptionmentioning

confidence: 99%

Multi‐objective optimization and techno‐economic analysis of CO₂ utilization through direct synthesis of di‐methyl ether plant

Yasari

Panahi

Rafiee

2021

Intl J of Energy Research

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In this study, a multiobjective optimization problem (MOOP) with two objective functions (maximization of di-methyl-ether (DME) production rate and minimization of carbon dioxide release) was applied to the direct synthesis of DME from a natural gas-derived synthesis gas (syngas). Twelve degrees of freedom were considered. The MOOP results suggest that the process with a maximum DME production rate of 1686 kmol/hr releases 4788 kmol/hr CO 2 while the CO 2 release of the process with DME production rate of 1282 kmol/hr is 1761 kmol/hr. The higher the DME production rate, the lower net CO 2 emission to the air, natural gas consumption, and energy consumption per kg of the DME produced. In addition, the process with a higher DME production rate has a higher carbon efficiency and power production from the produced steam. The annual profit criteria of the overall process were used as a posterior preference index to select the best point from the resultant multiobjective optimization Pareto front. It was shown that the plant with the topmost DME production rate has the utmost annual profit compared to other Pareto optimum points. Lastly, the effect of degrees of freedom on the maximum DME production rate is discussed. K E Y W O R D Sannual profit, CO 2 utilization, di-methyl-ether synthesis, multiobjective optimization, natural gas-derived syngas Abbreviations: CE, carbon efficiency; C OL , cost of operating labor (million USD/year); C RM , cost of raw materials (million USD/year); C UT , cost of utilities (million USD/year); C i , concentration of component i À mol * ð x * Þ, vector of objective functions; x *

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“…There are single-step and two-step routes to produce DME from syngas. In the single-step route, a hybrid catalyst for simultaneous methanol synthesis and dehydration is used [44][45][46]. While, in the two-step route, formerly synthesized methanol is dehydrated to DME [37,38].…”

Section: • High Cetane Number and No No X Emissionmentioning

confidence: 99%

A Heat Exchanger Reactor Equipped with Membranes to Produce Dimethyl Ether from Syngas and Methyl Formate and Hydrogen from Methanol

Rahimpour¹

2016

Int. J. Membrane Sci. Techno.

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The energy crisis of the century is a motivation to present processes with higher energy efficiency for production of clean and renewable resources of energy. Hence, a catalytic heat exchanger reactor for production of dimethyl ether (DME) from syngas, and hydrogen and methyl formate (MF) from methanol is investigated in the present study. The proposed configuration is equipped with two different membranes for in-situ separation of products. Syngas is converted to DME through an exothermic reaction and it supplies a part of required energy for the methanol dehydrogenation reaction. Produced water in the exothermic side and produced hydrogen in the endothermic side are separated by using appropriate perm-selective membranes. In-situ separation of products makes the equilibrium reactions proceed toward higher conversion of reactants. A mathematical model based on reasonable assumptions is developed to evaluate molar and thermal behavior of the configuration. Performance of the system is aimed to enhance by obtaining optimum operating conditions. In this regard, Genetic Algorithm is applied. Performance of the heat exchanger double membrane reactor working under optimum conditions (OTMHR) is compared with a heat exchanger reactor without membrane (THR). OTMHR promotes methanol conversion to MF to %87.2, carbon monoxide conversion to %95.8 and hydrogen conversion to %64.6.

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Production of Methanol and Dimethyl ether from biomass derived syngas – a comparison of the different synthesis pathways by means of flowsheet simulation

Cited by 17 publications

References 4 publications

Simultaneous production of dimethyl ether (DME), methyl formate (MF) and hydrogen from methanol in an integrated thermally coupled membrane reactor

Simultaneous production of dimethyl ether (DME), methyl formate (MF) and hydrogen from methanol in an integrated thermally coupled membrane reactor

Multi‐objective optimization and techno‐economic analysis of CO₂ utilization through direct synthesis of di‐methyl ether plant

A Heat Exchanger Reactor Equipped with Membranes to Produce Dimethyl Ether from Syngas and Methyl Formate and Hydrogen from Methanol

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Production of Methanol and Dimethyl ether from biomass derived syngas – a comparison of the different synthesis pathways by means of flowsheet simulation

Cited by 17 publications

References 4 publications

Simultaneous production of dimethyl ether (DME), methyl formate (MF) and hydrogen from methanol in an integrated thermally coupled membrane reactor

Simultaneous production of dimethyl ether (DME), methyl formate (MF) and hydrogen from methanol in an integrated thermally coupled membrane reactor

Multi‐objective optimization and techno‐economic analysis of CO2 utilization through direct synthesis of di‐methyl ether plant

A Heat Exchanger Reactor Equipped with Membranes to Produce Dimethyl Ether from Syngas and Methyl Formate and Hydrogen from Methanol

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Product

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Multi‐objective optimization and techno‐economic analysis of CO₂ utilization through direct synthesis of di‐methyl ether plant