Simultaneous Determination of Reaction Kinetics and Oxygen Activity in Single-Phase Oxidic Catalysts and Their Mixture during Partial Oxidations

Estenfelder, M.; Lintz, H.‐G.

doi:10.1006/jcat.2002.3598

Cited by 7 publications

(9 citation statements)

References 15 publications

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“…Kinetic validations were conducted on Aspen Plus ® (AspenTech, Bedford, MA, USA) to determine the feasibility of scaling up the lab-scale kinetics. The yield and selectivities reported by Estenfelder and Lintz [7] correlated with the Aspen Plus ® (AspenTech, Bedford, MA, USA) simulation results in Table 2, thereby validating the use of these kinetics in the design of an industrial-sized reactor as well as reinforcing the ease of scale-up with multitubular reactors. 1 Estenfelder and Lintz [7] reported a selectivity to acrylic acid of 98% and a yield of 95%.…”

Section: Acrolein Partial Oxidation Reaction Kinetics Validationsupporting

confidence: 64%

“…Valid shell and tube side phases • Catalyst bed voidage, particle density, particle diameter, particle shape factor Reaction kinetics for the partial oxidation of propylene were extracted from Redlingshofer et al [6], whilst Estenfelder and Lintz [7] reaction kinetics were used for the partial oxidation of acrolein to acrylic acid. The reaction kinetics used in this work were validated on Aspen Plus ® (AspenTech, Bedford, MA, USA).…”

Section: Methods Developmentmentioning

confidence: 99%

“…Estenfelder and Lintz [7] presented reaction kinetics that were valid in the temperature range from 533-573 K for the partial oxidation of acrolein. When employing the method developed to The following subsections aim to discuss the differences in the optimization methodologies for R-101 and R-102.…”

Section: Methods Developmentmentioning

confidence: 99%

“…Estenfelder and Lintz [7] presented reaction kinetics that were valid in the temperature range from 533-573 K for the partial oxidation of acrolein. When employing the method developed to optimize R-102 as per the design constraints, the reactor temperature could not be maintained within the required temperature range due to the formation of a hotspot near the entrance of the reactor.…”

Section: Methods Developmentmentioning

confidence: 99%

“…Estenfelder and Lintz [7] presented reaction kinetics for the partial oxidation of acrolein over vanadium molybdate oxide catalysts with varying compositions. The reactor network was treated as an isothermal plug flow reactor and kinetics were presented for 533 K and 573 K. In order to approximate the kinetics for the temperature range from 533 K to 573 K, linearization of the experimentally determined reaction rate constants was used.…”

Section: Acrolein Partial Oxidation Reaction Kinetics Validationmentioning

confidence: 99%

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Reducing Energy Requirements in the Production of Acrylic Acid: Simulation and Design of a Multitubular Reactor Train

Premlall

Lokhat

2020

Energies

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Acrylic acid, a versatile chemical intermediate, is typically manufactured via a two-step process involving the selective oxidation of propylene and acrolein. This work presents an optimized simulation on Aspen Plus® (AspenTech, Bedford, MA, USA) of the production of acrylic acid, with focus on the optimum design and operation of the reactor train, and modification for reduction in energy usage. In the propylene oxidation reactor, an inert pre-heating zone was designed to make use of the excess energy present in the exothermic process fluid and carried within the molten salt cooling fluid circuit. In the acrolein oxidation reactor, injection of cold air was used as a means to absorb the reaction heat. The optimization methodology employed aimed to minimize the total capital expenditure (i.e., equipment sizing) and operating costs (heat exchange network) for the required acrylic acid production and design constraints. The design constraints were based on the selected reaction kinetics and design heuristics for an optimum reactor design in this service from literature. Sensitivity analyses conducted on Aspen Plus® (AspenTech, Bedford, MA, USA) were used to determine both the interactions between and grouping of the critical parameters for the optimization. Elimination of the conventional fired preheater from the propylene oxidation reactor resulted in energy savings of almost 7 MW, with the reduction in cooling fluid pumping power for the acrolein oxidation reactor amounting to 5 kW.

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Section: Acrolein Partial Oxidation Reaction Kinetics Validationsupporting

confidence: 64%

Section: Methods Developmentmentioning

confidence: 99%

Section: Methods Developmentmentioning

confidence: 99%

“…Estenfelder and Lintz [7] presented reaction kinetics that were valid in the temperature range from 533-573 K for the partial oxidation of acrolein. When employing the method developed to optimize R-102 as per the design constraints, the reactor temperature could not be maintained within the required temperature range due to the formation of a hotspot near the entrance of the reactor.…”

Section: Methods Developmentmentioning

confidence: 99%

Section: Acrolein Partial Oxidation Reaction Kinetics Validationmentioning

confidence: 99%

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