Utilization of CO2 in Flue Gas for Sodium Bicarbonate Production in a Bubble Column
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Abstract
Utilization of CO2 in flue gases for the production of sodium bicarbonate is an environmentally friendly process. A mathematical model was constructed for the design and simulation of utilizing a low concentration CO2 (2-18%) in flue gas to produce sodium bicarbonate in a bubble column reactor. The model is based on the mass balance equations for three phases (gas, liquid, and solid). Danckwerts theory for mass transfer from the gas phase to the liquid phase coupling with chemical reaction, and crystallization mechanism was used. The effect of process variables; gas molar velocity or flux (G=2.5-10 mole/m2.s), liquid mass flow rate (mL=2800-3400 kg/h), sodium bicarbonate concentration (x1=0.04-0.1), CO2 gas mole fraction (y=0.02-0.18), column height (h=11-33 m), and column diameter (dR=1-3 m) on the objective variables; solid molar velocity (S), CO2 conversion, precipitation zone height (Zi), and crystal size distribution (CSD) were studied. The conversion of CO2 varied from 34% to 71% whereas the particle size range varied from 0 to 400 μm. The particle size range and the CO2 absorption efficiency of about 50% for 20 m column height are in agreement with the literature.
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References
Song C, Gaffney AF, Fujimoto K. CO2 conversion and utilization, American Chem. Soci 2002.
Abdel-Rahman ZA, Hamed HH, Khalaf FK. Optimization of Sodium Bicarbonate Production Using Response Surface Methodology (RSM), Diyala J. of Eng. Sci. 2018;11(3) 22- 28.
Hikita H, Asai S, Takatsuka T. Absorption of carbon dioxide into aqueous sodium hydroxide and sodium carbonate- bicarbonate solutions. The Chemical Engineering Journal 1976; 11(2): 131-141.
Salehi K, Jokar SM, Shariati J, Bahmani M, Sedghamiz MA, Rahimpour MR. Enhancement of CO conversion in a novel slurry bubble column reactor for methanol synthesis. J. of Natural Gas Science and Engineering 2014; 21: 170-183.
Saberi A, Goharrizi AS, Ghader S. Precipitation kinetics of sodium bicarbonate in an industrial bubble column crystallizer. Crystal Research and Technology. Journal of Experimental and Industrial Crystallography 2009; 44(2): 159-166.
Mersmann, A., Crystallization technology, 1995.
Balasko B, Nemeth S, Janecska A, Nagy T, Nagy G, Abonyi J. Process modeling and simulation for optimization of operating processes. In V. Pleşu & P. Ş. Agachi (Eds.). Computer Aided Chemical Engineering 2007; (24): 895.
Jung S, Becker M, Agar DW, Franke R. One-Dimensional Modeling and Simulation of Bubble Column Reactors. Chemical Engineering & Technology 2010; 33(12): 2037-2043.
Haut Bt, Cartage T. Mathematical modeling of gas–liquid mass transfer rate in bubble columns operated in the heterogeneous regime. Chem. Eng. Sci. 2005; 60(22): 5937-5944.
Haut BT, Halloin V, Cartage T, Cockx A. Production of sodium bicarbonate in industrial bubble columns. Chem. Eng. Sci 2004; 59(22-23):5687-5694.
Wylock CE, Colinet P, Cartage T, Haut B. Coupling between mass transfer and chemical reactions during the absorption of CO2 in a NaHCO3-Na2CO3 brine: experimental and theoretical study. International J. of Chemical Reactor Engineering 2008; 6(1).
Wylock CE, Larcy A, Colinet P, Cartage T, Haut B. Study of the CO2 Transfer Rate in a Reacting Flow for the Refined Sodium Bicarbonate Production Process. Proceedings of the COMSOL Conference, Hannover 2008.
Wylock CE, Larcy A, Cartage T, Haut B. Compartmental modeling of an industrial column. Chem.Product and Proc. Modeling 2009; 4(5).
Wylock CE, Gutierrez V, Debast F, Delplancke-Ogletree MP, Cartage T, Haut B. Influence of mixing and solid concentration on sodium bicarbonate secondary nucleation rate in stirred tank: theoretical and experimental studies. Crystal Research and Technology 2010; 45 (9): 929-938.
Goharrizi AS, Abolpour B. Estimation of sodium bicarbonate crystal size distributions in a steady-state bubble column reactor. Research on Chemical Intermediates 2012; 38(7): 1389-1401.
Goharrizi RS, Abolpour B. Estimation of nucleation and growth rate of sodium bicarbonate crystals in a steady-state bubble column reactor. Research on Chemical Intermediates 2013; 41(3): 1459-1471.
Goharrizi AS, Abolpour B. Modeling an industrial sodium bicarbonate bubble column reactor. Applied Petrochemical Res 2014; 4(2): 235
Maharloo DG, Darvishi A, Davand R, Saidi M, Rahimpour MR. Process intensification and environmental consideration of sodium bicarbonate production in an industrial soda ash bubble column reactor by CO2 recycling. Journal of CO2 Utilization 2017; 20, 318.
Wylock CE, Rednikov A, Colinet P, Haut B. Experimental and numerical analysis of buoyancy-induced instability during CO2 absorption in NaHCO3–Na2CO3 aqueous solutions. 2017; 157: 232-246.
Danckwerts PV, Lannus A. Gas‐liquid reactions. Journal of the Electrochemical Society 1970; 117(10): 369C-370C.
Kantarci N, Borak F, Ulgen KO. Bubble column reactors. Proc. Biochem. 2005; 40(7): 2263.
Hughmark GA. Holdup and Mass Transfer in Bubble Columns. Indust. & Eng. Chemistry Process Design and Development 1967; 6(2): 218-220.
Pohorecki R, Moniuk WDW. Kinetics of reaction between carbon dioxide and hydroxyl ions in aqueous electrolyte solutions. Chemical engineering science 1988; 43(7): 1677-1684.
Tamimi A, Rinker EB, Sandall OC. Diffusion coefficients for hydrogen sulfide, carbon dioxide, and nitrous oxide in water over the temperature range 293-368 K. Journal of Chemical and Engineering data 1994; 39(2): 330-332.