Aspen Plus rate-based modeling for reconciling laboratory scale and pilot scale CO2 absorption using aqueous ammonia

Liu, Jialin; Gao, Han-Ci; Peng, Chao-Chin; Wong, David Shan Hill; Jang, Shi-Shang; Shen, Jui-Fu

doi:10.1016/j.ijggc.2015.01.009

Cited by 31 publications

(11 citation statements)

References 34 publications

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“…The models for a NH 3 absorption tower and a carbonation tower use the absorption tower unit (ABSBR1) in the RadFrac module. The NH 3 absorption tower and the carbonation tower are simulated using the equilibrium‐based model and the rate‐based model, respectively 12, 14. The two towers are all plate absorption towers, and their designs and working parameters are shown in Supporting Information Tab.…”

Section: Methodsmentioning

confidence: 99%

“…Tang et al 10 elucidated the reaction mechanism for the carbonation process of an ammoniated aqueous solution of sodium sulfate and established a simple absorption macro‐model of the carbonation process based on the film theory. Also, in many published articles, with the help of an equilibrium‐based model and a rate‐based model in Aspen Plus, the CO 2 absorption process using aqueous ammonia was simulated and the CO 2 capture performance was predicted, based on the thermodynamic and kinematic data of the NH 3 ‐CO 2 ‐H 2 O system 11–17.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modeling and Simulation for the Production Process of Soda Ash by the Ammonium Sulfate‐Soda Method

Pak¹,

Son²,

Li³

et al. 2021

Chem Eng & Technol

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The ammonium sulfate‐soda method is a procedure that produces soda ash and the by‐product ammonium sulfate, using mirabilite as the raw material. Here, a process for producing soda ash by the ammonium sulfate‐soda method is proposed. Based on the reaction mechanisms occurring in the Na2SO4‐NH3‐CO2‐H2O system and the kinetic‐thermodynamic data of the CO2 absorption process using aqueous NH3, the soda ash production process is modeled and simulated using Aspen Plus. The effects of various process parameters (the concentration of the raw mirabilite solution, the amounts of NH3 and CO2 flowing into the process, and the recycle ratio of CO2 exhausted from the NaHCO3 calciner, etc.) on the process performance are investigated.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling and Simulation for the Production Process of Soda Ash by the Ammonium Sulfate‐Soda Method

Pak¹,

Son²,

Li³

et al. 2021

Chem Eng & Technol

View full text Add to dashboard Cite

show abstract

“…错误!未找到引用源。 shows the experimental flowsheet employed in this study. A lab-scale packed-bed absorber (Liu et al, 2015) was used to carry out the experiment for validating the aerosol growth. The equipment contained four parts of removable glass packed sections.…”

Section: Methodsmentioning

confidence: 99%

Multi-scale Modeling and Study of Aerosol Growth on Amine-Based CO<sub>2</sub> Capture Absorber

Kang¹,

Liu²,

Wong³

et al. 2020

Preprint

Self Cite

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In this study, a monoethanolamine aerosol growth model was developed to investigate the aerosol growth factor. Interactions among the internal conditions in an absorber were considered in this aerosol model. Additionally, an experiment was conducted to measure aerosol particle size, for collecting in-house validation data. Sucrose was used as the aerosol nuclei instead of sulfuric acid to prevent the corrosion of equipment used in the experiment. Experimental results showed that the outlet aerosol sizes increased to the same size regardless of the sucrose concentrations. The aerosol growth model was validated using the in-house experimental data. The aerosol growth model efficiently predicted the aerosol size. For investigating aerosol growth effects, particle number concentration was determined to be the primary factor affecting aerosol growth and amine emissions. When the particle number concentration increased, the aerosol size decreased, whereas the MEA emission increased.

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“…12 The sizing and design of the CO 2 absorption column, one of the main contributors to the investment costs of a CO 2 capture plant, 13 requires accurate modeling of the rates of mass and heat transfer, which depend on the physicochemical properties of the liquid absorbent and on the hydrodynamics within the vapor−liquid contactor. The hydrodynamic conditions within the CO 2 absorber are strongly influenced by the density and by the transport properties of the aqueous solution, 14,15 among which viscosity and CO 2 diffusivity have the greatest impact. models of density and viscosity of unloaded aqueous ammonia solutions have been reported in the literature.…”

Section: ■ Introductionmentioning

confidence: 99%

Density and Viscosity of Aqueous (Ammonia + Carbon Dioxide) Solutions at Atmospheric Pressure and Temperatures between 278.15 and 318.15 K

et al. 2021

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The density and the viscosity of aqueous (NH 3 + CO 2 ) solutions have been measured at atmospheric pressure over a temperature range of 278 to 318 K and apparent concentrations of solute between 4 and 10 mol NH 3 kg H 2 O −1 for NH 3 and between 1 and 5.2 mol CO 2 kg H 2 O −1 for CO 2 . Solute loss from the aqueous solution associated with the high equilibrium partial pressure of NH 3 and of CO 2 has been limited by devices and protocols developed adhoc for sample preparation and density and viscosity measurement. Solid or vapor formation out of the initial liquid mixture has been avoided by means of a thermodynamic model-driven design of experiments. The experimental values gathered in this work have been used to obtain empirical models of density and viscosity, as a function of the apparent concentration of solutes, that is, NH 3 and CO 2 , and temperature, that are able to reproduce the experimental values in all cases with deviations below 1.1% for density and below 9.4% for viscosity. While it is the first time that, to our knowledge, experimental viscosity data of aqueous ammonia solutions loaded with CO 2 are added to the literature, the density model developed in this work is also able to reproduce experimental density data from literature with deviations below 1.5%, even outside the boundaries of the experimental conditions considered in this work.

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Aspen Plus rate-based modeling for reconciling laboratory scale and pilot scale CO2 absorption using aqueous ammonia

Cited by 31 publications

References 34 publications

Modeling and Simulation for the Production Process of Soda Ash by the Ammonium Sulfate‐Soda Method

Modeling and Simulation for the Production Process of Soda Ash by the Ammonium Sulfate‐Soda Method

Multi-scale Modeling and Study of Aerosol Growth on Amine-Based CO<sub>2</sub> Capture Absorber

Density and Viscosity of Aqueous (Ammonia + Carbon Dioxide) Solutions at Atmospheric Pressure and Temperatures between 278.15 and 318.15 K

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