Design of microchannel Fischer–Tropsch reactor using cell-coupling method: Effect of flow configurations and distribution

Park, Seong-Ho; Jung, Inhwa; Lee, Yong-Kyu; Kshetrimayum, Krishnadash S.; Na, Jonggeol; Park, Seongeon; Shin, Seolin; Ha, Daegeun; Lee, Yeongbeom; Chung, Jongtae; Lee, Chul Jin; Han, Chonghun

doi:10.1016/j.ces.2015.12.012

Cited by 20 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Naturally, for these systems, the question arises, how to align the flow of the coolant with the flow of the chemically reacting gas mixture. Popular choices are given by setups that use co-current, counter-current, or cross-flow configurations [64][65][66].…”

Section: Realizability Of Our Results In Practicementioning

confidence: 99%

Optimal control of the Sabatier process in microchannel reactors

2021

View full text Add to dashboard Cite

We consider the optimization of a chemical microchannel reactor by means of PDE-constrained optimization techniques, using the example of the Sabatier reaction. To model the chemically reacting flow in the microchannels, we introduce a three- and a one-dimensional model. As these are given by strongly coupled and highly nonlinear systems of partial differential equations (PDEs), we present our software package cashocs which implements the adjoint approach and facilitates the numerical solution of the subsequent optimization problems. We solve a parameter identification problem numerically to determine necessary kinetic parameters for the models from experimental data given in the literature. The obtained results show excellent agreement to the measurements. Finally, we present two optimization problems for optimizing the reactor’s product yield. First, we use a tracking-type cost functional to maximize the reactant conversion, keep the flow rate of the reactor fixed, and use its wall temperature as optimization variable. Second, we consider the wall temperature and the inlet gas velocity as optimization variables, use an objective functional for maximizing the flow rate in the reactor, and ensure the quality of the product by means of a state constraint. The results obtained from solving these problems numerically show great potential for improving the design of the microreactor.

show abstract

Section: Realizability Of Our Results In Practicementioning

confidence: 99%

Optimal control of the Sabatier process in microchannel reactors

2021

View full text Add to dashboard Cite

show abstract

“…Naturally, for these systems the question arises, how to align the flow of the coolant with the flow of the chemically reacting gas mixture. Popular choices are given by setups that use co-current, counter current, or orthogonal flows (see, e.g., [45,61]).…”

Section: Optimization With Variable Flowmentioning

confidence: 99%

Optimal Control of the Sabatier Process in Microchannel Reactors

Blauth,

Leithäuser,

Pinnau

2020

Preprint

View full text Add to dashboard Cite

We consider the optimization of a chemical microchannel reactor by means of PDE constrained optimization techniques, using the example of the Sabatier reaction. To model the chemically reacting flow in the microchannels, we introduce a three-and a one-dimensional model. As these are given by strongly coupled and highly nonlinear systems of partial differential equations (PDEs), we present our numerical implementation of the adjoint approach that automates the derivation of the corresponding adjoint and gradient equations and facilitates the numerical solution of the subsequent optimization problems. We solve a parameter identification problem numerically to determine necessary kinetic parameters for the models from experimental data given in the literature. The obtained results show excellent agreement to the measurements. Finally, we present two optimization problems for optimizing the reactor's product yield. First, we use a tracking-type cost functional to maximize the reactant conversion, keep the flow rate of the reactor fixed, and use its wall temperature as optimization variable. Second, we consider the wall temperature and the inlet gas velocity as optimization variables, use a objective functional for maximizing the flow rate in the reactor, and ensure the quality of the product by means of a state constraint. The results obtained from solving these problems numerically show great potential for improving the design of the microreactor.

show abstract

“…Flow distribution uniformity is crucial for the successful performance of reactions in meso-and microchannel reactors operating as continuous flow systems [7][8][9][10]. The flow distribution ensures that all the channels operate under similar conditions of flow regime, mass transfer, and heat transfer [11][12][13]. The distribution of flow through several channels can be ensured by arrays of flow controllers or by manifold devices that split the flow through the channels.…”

Section: Introductionmentioning

confidence: 99%

ChannelCOMB Device for Mesostructured Reactors and Networks of Reactors

et al. 2023

View full text Add to dashboard Cite

ChannelCOMB, a consecutive flow distributor, was constructed by additive manufacturing (AM) for experimental validation. The feasibility of using AM was experimentally analyzed for two techniques: stereolithography (tolerance of 50 µm) and fused deposition modeling (tolerance of 100 µm). For the best ChannelCOMB configuration, SLA printing shows a maximum of ca. 4 % in flow deviation, while FDM has a maximum of ca. 15 %. Thus, the SLA technique promotes better flow uniformity due to the fabrication tolerance and material permeability. The results also show that the experimental flow distribution measured for the best ChannelCOMB configuration printed by SLA can be well predicted by both computational fluid dynamics simulations and a model based on resistance analogs proposed in a previous work.

show abstract

Design of microchannel Fischer–Tropsch reactor using cell-coupling method: Effect of flow configurations and distribution

Cited by 20 publications

References 24 publications

Optimal control of the Sabatier process in microchannel reactors

Optimal control of the Sabatier process in microchannel reactors

Optimal Control of the Sabatier Process in Microchannel Reactors

ChannelCOMB Device for Mesostructured Reactors and Networks of Reactors

Contact Info

Product

Resources

About