Selective kinetic deactivation model for methanol synthesis from simultaneous reaction of CO<sub>2</sub> and CO with H<sub>2</sub> on a commercial copper/zinc oxide catalyst

Rahimpour, Mohammad Reza; Fathikalajahi, J.; Jahanmiri, A.

doi:10.1002/cjce.5450760410

Cited by 42 publications

(25 citation statements)

References 33 publications

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“…As can be seen from Fig. 4, there is a systematic deviation from the experimental values, which is due to the fact that the effect of CO 2 on catalyst deactivation was ignored [13]. The percent errors between the simulation data and plant data are illustrated in Tab.…”

Section: Dynamic Model Validationmentioning

confidence: 98%

Incorporation of Dynamic Flexibility in the Design of a Methanol Synthesis Loop in the Presence of Catalyst Deactivation

2007

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A typical methanol loop reactor is analyzed in this study. All basic equipment in the Lurgi-type methanol loop is included in the proposed model. A detailed dynamic model described by a set of ordinary differential and algebraic equations is developed to predict the behavior of the overall process. The model is validated against plant data. A new deactivation model is proposed and its parameters are estimated using daily plant data. The interesting feature of this model is that it incorporates the effect of carbon dioxide and carbon monoxide on the catalyst deactivation. Using the model, the effect of various factors to compensate for the reduction of production rate due to catalyst deactivation has been examined. Some improvements can be achieved by adjusting the operating conditions. Finally, a strategy is proposed for prevention of reduced production due to catalyst deactivation.

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Section: Dynamic Model Validationmentioning

confidence: 98%

Incorporation of Dynamic Flexibility in the Design of a Methanol Synthesis Loop in the Presence of Catalyst Deactivation

2007

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“…Water produced during RWGS reaction (Equation (2)) greatly reduces the methanol production rate by suppressing reaction (3). Furthermore, the produced water accelerates the crystallization of Cu and ZnO contained in the commercial catalyst, leading to the catalyst deactivation [41,42]. In addition, alumina presented in the catalyst is a very hydrophilic substance and consequently adsorbs the generated water, resulting in catalyst poisoning.…”

Section: A Comparison Between One-stage Three-stage and Three-stage mentioning

confidence: 99%

Development of an Efficient Methanol Production Process for Direct CO2 Hydrogenation over a Cu/ZnO/Al2O3 Catalyst

2017

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Carbon capture and utilization as a raw material for methanol production are options for addressing energy problems and global warming. However, the commercial methanol synthesis catalyst offers a poor efficiency in CO 2 feedstock because of a low conversion of CO 2 and its deactivation resulting from high water production during the process. To overcome these barriers, an efficient process consisting of three stage heat exchanger reactors was proposed for CO 2 hydrogenation. The catalyst volume in the conventional methanol reactor (CR) is divided into three sections to load reactors. The product stream of each reactor is conveyed to a flash drum to remove methanol and water from the unreacted gases (H 2 , CO and CO 2 ). Then, the gaseous stream enters the top of the next reactor as the inlet feed. This novel configuration increases CO 2 conversion almost twice compared to one stage reactor. Also to reduce water production, a water permselective membrane was assisted in each reactor to remove water from the reaction side. The proposed process was compared with one stage reactor and CR from coal and natural gas. Methanol is produced 288, 305, 586 and 569 ton/day in CR, one-stage, three-stage and three-stage membrane reactors (MR), respectively. Although methanol production rate in three-stage MR is a bit lower than three stage reactors, the produced water, as the cause of catalyst poisoning, is notably reduced in this configuration. Results show that the proposed process is a strongly feasible way to produce methanol that can competitive with a traditional synthesis process.

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“…The dynamic simulation of conventional methanol synthesis reactor was investigated by Lovik et al for long-term optimization [7]. Rahimpour et al studied the deactivation of a methanol synthesis catalyst and proposed mechanisms for deactivation of this type of catalyst [8,9]. Rahimpour et al also studied the reactor performance when a mixture of fresh and partially deactivated catalyst was used [10].…”

Section: Introductionmentioning

confidence: 98%

A Novel Radial‐Flow, Spherical‐Bed Reactor Concept for Methanol Synthesis in the Presence of Catalyst Deactivation

2008

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A radial-flow, spherical-bed reactor concept for methanol synthesis in the presence of catalyst deactivation, has been proposed. This reactor configuration visualizes the concentration and temperature distribution inside a radial-flow packed bed with a novel design for improving reactor performance with lower pressure drop. The dynamic simulation of spherical multi-stage reactors has been studied in the presence of long-term catalyst deactivation. Model equations were solved by the orthogonal collocation method. The performance of the spherical multi-stage reactors was compared with a conventional single-type tubular reactor. The results show that for this case study and with similar reactor specifications and operating conditions, the two-stage spherical reactor is better than other alternatives such as single-stage spherical, three-stage spherical and conventional tubular reactors. By increasing the number of stages of a spherical reactor, one increases the quality of production and decreases the quantity of production.

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Selective kinetic deactivation model for methanol synthesis from simultaneous reaction of CO₂ and CO with H₂ on a commercial copper/zinc oxide catalyst

Cited by 42 publications

References 33 publications

Incorporation of Dynamic Flexibility in the Design of a Methanol Synthesis Loop in the Presence of Catalyst Deactivation

Incorporation of Dynamic Flexibility in the Design of a Methanol Synthesis Loop in the Presence of Catalyst Deactivation

Development of an Efficient Methanol Production Process for Direct CO2 Hydrogenation over a Cu/ZnO/Al2O3 Catalyst

A Novel Radial‐Flow, Spherical‐Bed Reactor Concept for Methanol Synthesis in the Presence of Catalyst Deactivation

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Selective kinetic deactivation model for methanol synthesis from simultaneous reaction of CO2 and CO with H2 on a commercial copper/zinc oxide catalyst

Cited by 42 publications

References 33 publications

Incorporation of Dynamic Flexibility in the Design of a Methanol Synthesis Loop in the Presence of Catalyst Deactivation

Incorporation of Dynamic Flexibility in the Design of a Methanol Synthesis Loop in the Presence of Catalyst Deactivation

Development of an Efficient Methanol Production Process for Direct CO2 Hydrogenation over a Cu/ZnO/Al2O3 Catalyst

A Novel Radial‐Flow, Spherical‐Bed Reactor Concept for Methanol Synthesis in the Presence of Catalyst Deactivation

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Selective kinetic deactivation model for methanol synthesis from simultaneous reaction of CO₂ and CO with H₂ on a commercial copper/zinc oxide catalyst