The Desorption of Carbon Dioxide from Water in a Short Wetted-wall Column PDF Download
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Author: George Hector Costomiris
Publisher:
ISBN:
Category :
Languages : en
Pages : 76
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Book Description
Author: George Hector Costomiris
Publisher:
ISBN:
Category :
Languages : en
Pages : 76
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Book Description
Author: Harry W. Lambe
Publisher:
ISBN:
Category :
Languages : en
Pages : 120
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Author: Marshall E. Baker
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Category :
Languages : en
Pages : 92
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Author: Robert F. Abbanat
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Category :
Languages : en
Pages : 130
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Author: Arnold Chesley Hatch
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Category :
Languages : en
Pages : 24
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Author: Tjipto Utomo
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Category :
Languages : en
Pages : 270
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Author: Tirunillayi Seshaier Govindan
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Category : Carbon dioxide
Languages : en
Pages : 232
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Author: Lawrence James Engel
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Category : Gases
Languages : en
Pages : 88
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Author: American Institute of Chemical Engineers
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Category : Chemical engineering
Languages : en
Pages : 1172
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Author: Ross Edward Dugas
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Category :
Languages : en
Pages : 58
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This work includes wetted wall column experiments that measure the CO2 equilibrium partial pressure and liquid film mass transfer coefficient (kg') in 7, 9, 11, and 13 m MEA and 2, 5, 8, and 12 m PZ solutions. A 7 m MEA/2 m PZ blend was also examined. Absorption and desorption experiments were performed at 40, 60, 80, and 100°C over a range of CO2 loading. Diaphragm diffusion cell experiments were performed with CO2 loaded MEA and PZ solutions to characterize diffusion behavior. All experimental results have been compared to available literature data and match well. MEA and PZ spreadsheet models were created to explain observed rate behavior using the wetted wall column rate data and available literature data. The resulting liquid film mass transfer coefficient expressions use termolecular (base catalysis) kinetics and activity-based rate expressions. The kg' expressions accurately represent rate behavior over the very wide range of experimental conditions. The models fully explain rate effects with changes in amine concentration, temperature, and CO2 loading. These models allow for rate behavior to be predicted at any set of conditions as long as the parameters in the kg' expressions can be accurately estimated. An Aspen Plus® RateSep[trademark] model for MEA was created to model CO2 flux in the wetted wall column. The model accurately calculated CO2 flux over the wide range of experimental conditions but included a systematic error with MEA concentration. The systematic error resulted from an inability to represent the activity coefficient of MEA properly. Due to this limitation, the RateSep[trademark] model will be most accurate when finetuned to one specific amine concentration. This Aspen Plus® RateSep[trademark] model allows for scale up to industrial conditions to examine absorber or stripper performance.
