Transient behaviour of an adiabatic fixed-bed methanator—II

Doesburg, H. Van; Jong, W.A. De

doi:10.1016/0009-2509(76)85008-7

Cited by 37 publications

(4 citation statements)

References 5 publications

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“…However, in addition to H 2 , only small amount of CO and relatively large amount of CH 4 but no CO 2 were detected in the gas product. The methanation of CO 2 under similar conditions with this study was only about 20% with low CH 4 selection [66], and the presence of CO inhibited the methanation of CO 2 [67]. But the CO was more prone to be converted to CH 4 in the presence of H 2 [68].…”

Section: Catalytic Performance: Screening Of Lauric Acid Hdosupporting

confidence: 72%

Hydrodeoxygenation of aliphatic acid over NiFe intermetallic compounds: Insights into the mechanism via model compound study

Han

Wang

Luo

et al. 2021

Fuel

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Section: Catalytic Performance: Screening Of Lauric Acid Hdosupporting

confidence: 72%

Hydrodeoxygenation of aliphatic acid over NiFe intermetallic compounds: Insights into the mechanism via model compound study

Han

Wang

Luo

et al. 2021

Fuel

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“…Consequently, a front with an elevated reactant concentration reaches the hotter part of the reactor and a hot spot is formed by the heat release of the excess reactants . Applied to the unsteady‐state methanation, van Doesburg and de Jong as well as Try et al detected the wrong‐way behavior for changes of the inlet temperature. Similarly, Sun and Simakov reported moving thermal fronts propagating in the reactor.…”

Section: Introductionmentioning

confidence: 99%

Transient Flow Rate Ramps for Methanation of Carbon Dioxide in an Adiabatic Fixed‐Bed Recycle Reactor

2019

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The power‐to‐gas (PtG) process, enabling the long‐term indirect storage of electrical energy, includes the water electrolysis for hydrogen production and the subsequent hydrogenation of carbon dioxide in a methanation reactor. The dynamic operation of methanation reactors is favored to limit upstream storage capacities, but not fully understood thus far. Therefore, this contribution investigates the dynamic operation of a fixed‐bed recycle reactor during flow rate ramps with a variation of the ramp time. Load ramps of the volumetric flow rate lead to global maxima during the transition; for the methane content if the flow rate is decreased, and for the gas temperature if the flow rate is increased. Furthermore, the adaptation of the product recirculation during flow rate ramps is discussed at the end. The recycle ratio turns out to provide an additional degree of freedom for stabilizing the reactor behavior under fluctuating feed conditions.

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“…Fig. 30 shows corresponding measurements obtained by Doesberg and De Jong for the hydration of CO and CO, [26].…”

Section: Fig 29mentioning

confidence: 99%

Stability Phenomena in Chemical Reactors

Gilles

1980

Ber Bunsenges Phys Chem

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Some important types of non‐linear phenomena occuring in chemically reacting systems are explained by means of some single examples of chemical reactors. Multiple steady‐states exhibiting a distinct behavior of ignition and extinction are in the category of these phenomena. In addition all dynamic instabilities, of which there are a wide variety must also be included. These instabilities might be of thermal or purely kinetic nature, or they may result from the interaction of chemical reaction and physical transport processes. Generally these instabilities result in increasing oscillations which finally converge in stable limit cycles. The moving reaction zone which can appear in fixed‐bed reactors is described in greater detail in order to demonstrate that such a dissipative structure may be considered a prototype of an active transport process. This kind of active transport process can be observed in many systems, which are not limited just to chemical engineering. Furthermore, it is emphasized that a moving reaction zone is characterized by a certain feature which here is called “form stability”. This property might be used in order to considerably reduce the order of the non‐linear equations, describing the reactor behavior. Model reduction is of great importance with respect to both a detailed analysis of the dynamic behavior of a reactor and to the design of control concepts.

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Transient behaviour of an adiabatic fixed-bed methanator—II

Cited by 37 publications

References 5 publications

Hydrodeoxygenation of aliphatic acid over NiFe intermetallic compounds: Insights into the mechanism via model compound study

Hydrodeoxygenation of aliphatic acid over NiFe intermetallic compounds: Insights into the mechanism via model compound study

Transient Flow Rate Ramps for Methanation of Carbon Dioxide in an Adiabatic Fixed‐Bed Recycle Reactor

Stability Phenomena in Chemical Reactors

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