Dynamic modeling of absorption/desorption closed-loop including periphery

Bothe, Mike; Dindar, Iman Hami; Lutters, Nicole; Kenig, Eugeny Y.

doi:10.1016/j.compchemeng.2022.107960

Cited by 1 publication

(8 citation statements)

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“…The understanding of the dynamic process behavior is essential for establishing a stable and safe process operation, especially in the presence of instabilities/malfunctions. In this work, a novel dynamic model of the overall closed-loop absorption/desorption plant including the periphery and nonseparating column internals was validated. The chemical absorption of CO 2 with aqueous MEA solutions was used as an example system.…”

Section: Discussionmentioning

confidence: 99%

“…Once fully validated, the dynamic model can be used for simulation studies to investigate hazardous situations. This model was developed in a general form to be applicable to different chemical absorption systems and most absorption plant constructions.…”

Section: Discussionmentioning

confidence: 99%

“…The models available in the literature do not take into account the influence of the nonseparating column internals on the process dynamics while the influence of the periphery is considered only in a simplified way. To close these gaps, we developed a new comprehensive dynamic model with included plant periphery . The model combines a rate-based description of the absorption and desorption columns, a one-dimensional heat transport approach to describe the process in the heat exchangers, and a continuous stirred tank reactor (CSTR) approach to capture the nonseparating column internals and pipelines.…”

Section: State Of the Artmentioning

confidence: 99%

“…In this section, a brief description of the new dynamic model proposed by Bothe et al is given. The transition processes to be simulated always begin and end in a steady state.…”

Section: Dynamic Model Including Plant Periphery and Its Performancementioning

confidence: 99%

“…To close these gaps, we developed a new comprehensive dynamic model with included plant periphery. 9 The model combines a rate-based description of the absorption and desorption columns, a one-dimensional heat transport approach to describe the process in the heat exchangers, and a continuous stirred tank reactor (CSTR) approach to capture the nonseparating column internals and pipelines. This model is applicable to absorption plants with various reaction systems, geometry, and number of units.…”

Section: State Of the Artmentioning

confidence: 99%

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Dynamics of an Absorption/Desorption Plant: Experimental Study and Model Validation

Weber,

Lutters,

Kenig

2024

Ind. Eng. Chem. Res.

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Reactive absorption is a separation process widely used in the environmental protection area. In this process, undesirable gaseous components are captured by chemical reaction in a solvent while the loaded solvent is regenerated in a desorption unit. Both process steps, absorption and desorption, take place simultaneously and strongly interact resulting in a very complex process behavior. To ensure stable and safe process operation, even in the presence of instabilities or malfunctions, understanding of the dynamic process behavior is essential. In this work, a pilot plant experimental study was carried out in which three different stepwise changes of the solvent flow rate were made. The results of this study were used as a validation basis for the recently developed novel dynamic model of reactive absorption/desorption processes in a closed-loop configuration including the plant periphery. The deviations between experimental and simulated outlet gas concentrations were found to be below 10% for all experiments. The validated model was used to investigate the influence of the periphery on the process performance.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: State Of the Artmentioning

confidence: 99%

“…In this section, a brief description of the new dynamic model proposed by Bothe et al is given. The transition processes to be simulated always begin and end in a steady state.…”

Section: Dynamic Model Including Plant Periphery and Its Performancementioning

confidence: 99%

Section: State Of the Artmentioning

confidence: 99%

See 3 more Smart Citations