Kinetics of low-pressure methanol synthesis

Graaf, G.H.; Stamhuis, Eize; Beenackers, A.A.C.M.

doi:10.1016/0009-2509(88)85127-3

Cited by 459 publications

(314 citation statements)

References 17 publications

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“…According the kinetics of Graaf et al [45], reaction rates are expressed, respectively, by the following expressions (see Equations (4)- (6)) in kmol/kgcat × s:…”

Section: Modeling Of the Catalytic Reactormentioning

confidence: 99%

“…Table 1 shows the values of activation energies and pre-exponential factors in the three relations. The expression for thermodynamic equilibrium constant is as follows (see Equation (8)) [45]:…”

Section: Modeling Of the Catalytic Reactormentioning

confidence: 99%

“…Table 2 shows the values of the parameters A and B for three reactions. In addition, for three reaction rates, these expressions are considered (see Equations (9)- (11)) [45]:…”

Section: Modeling Of the Catalytic Reactormentioning

confidence: 99%

“…Modeling data for the two analyses were obtained from the simulation of the reactor in ChemCad 6.3 ® software. The reactor was modelled according to the kinetics of Graaf et al [45] using Cu/ZnO/Al 2 O 3 as catalyst. It is evident that the production of MeOH is especially attractive in emerging economies as a liquid fuel to replace conventional sources of energy.…”

Section: Introductionmentioning

confidence: 99%

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Optimization through Response Surface Methodology of a Reactor Producing Methanol by the Hydrogenation of Carbon Dioxide

Leonzio

2017

Processes

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Carbon dioxide conversion and utilization is gaining significant attention worldwide, not only because carbon dioxide has an impact on global climate change, but also because it provides a source for potential fuels and chemicals. Methanol is an important fuel that can be obtained by the hydrogenation of carbon dioxide. In this research, the modeling of a reactor to produce methanol using carbon dioxide and hydrogen is carried out by way of an ANOVA and a central composite design. Reaction temperature, reaction pressure, H 2 /CO 2 ratio, and recycling are the chosen factors, while the methanol production and the reactor volume are the studied responses. Results show that the interaction AC is common between the two responses and allows improvement of the productivity in reducing the volume. A mathematical model for methanol production and reactor volume is obtained with significant factors. A central composite design is used to optimize the process. Results show that a higher productivity is obtained with temperature, CO 2 /H 2 ratio, and recycle factors at higher, lower, and higher levels, respectively. The methanol production is equal to 33,540 kg/h, while the reactor volume is 6 m 3 . Future research should investigate the economic analysis of the process in order to improve productivity with lower costs.

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“…According the kinetics of Graaf et al [45], reaction rates are expressed, respectively, by the following expressions (see Equations (4)- (6)) in kmol/kgcat × s:…”

Section: Modeling Of the Catalytic Reactormentioning

confidence: 99%

Section: Modeling Of the Catalytic Reactormentioning

confidence: 99%

“…Table 2 shows the values of the parameters A and B for three reactions. In addition, for three reaction rates, these expressions are considered (see Equations (9)- (11)) [45]:…”

Section: Modeling Of the Catalytic Reactormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimization through Response Surface Methodology of a Reactor Producing Methanol by the Hydrogenation of Carbon Dioxide

Leonzio

2017

Processes

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“…In the methanol synthesis, three overall reactions are possible: hydrogenation of carbon monoxide, hydrogenation of carbon dioxide that is strongly exothermic and reverse water-gas shift reaction: The kinetic model and the equilibrium rate constants are selected from Graaf's studies [13].…”

Section: Auxiliary Equationsmentioning

confidence: 99%

Optimal Fixed Bed Reactor Network Configuration for the Efficient Recycling of CO2 into Methanol

et al. 2009

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An optimal design strategy of a network of fixed bed reactors for Methanol Production (MP) is proposed in this study. Both methanol production and profit spanning a production period of eight years have been set as objective functions to find the optimal production network. The conservation of mass and energy laws on a heterogeneous model of a single industrial methanol reactor was first developed. The model was solved numerically and was validated with industrial plant data. Different reactor network arrangements were then simulated in order to find an optimal superstructure. It was found that a structure of four reactors (two in series in parallel with another two in series) provide maximum production rate. The application of the more realistic objective function of profit showed that a configuration of two parallel reactors is the best configuration. This optimal structure produces 92 tons/day more methanol than a single reactor.

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Kinetic study of methanol synthesis from carbon dioxide and hydrogen

Kubota¹,

Hayakawa²,

Mabuse³

et al. 2001

Appl. Organometal. Chem.

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The objective of this work was the simulation of methanol production process using a modified kinetic model to study the effect of reaction conditions on the relative contribution of Carbon II and Carbon IV oxides in methanol synthesis. The results showed that Carbon II oxide hydrogenation decreased as percentage of Carbon IV oxide increased and vice-versa. However it was observed that no generalizations could be made regarding the main carbon source in methanol but that the pathway of contribution from CO/CO 2 hydrogenation depends on process/reaction conditions. It is recommended that for improved process design, there is the need to carefully interpret experimental data and extrapolate results from low pressure/low conversion to high pressure/high conversion laboratory conditions.

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Kinetics of low-pressure methanol synthesis

Cited by 459 publications

References 17 publications

Optimization through Response Surface Methodology of a Reactor Producing Methanol by the Hydrogenation of Carbon Dioxide

Optimization through Response Surface Methodology of a Reactor Producing Methanol by the Hydrogenation of Carbon Dioxide

Optimal Fixed Bed Reactor Network Configuration for the Efficient Recycling of CO2 into Methanol

Kinetic study of methanol synthesis from carbon dioxide and hydrogen

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