Browse > Article
http://dx.doi.org/10.7464/ksct.2017.23.3.237

Comparison of CO2 Removal Capabilities among RectisolⓇ, SelexolTM, and PurisolⓇ Process for DME Synthesis and Separation Process  

Noh, Jaehyun (Department of Chemical Engineering, Kong Ju National University)
Park, Hoey Kyung (Department of Chemical Engineering, Kong Ju National University)
Kim, Dongsun (Department of Chemical Engineering, Kong Ju National University)
Cho, Jungho (Department of Chemical Engineering, Kong Ju National University)
Publication Information
Clean Technology / v.23, no.3, 2017 , pp. 237-247 More about this Journal
Abstract
In the dimethyl ether (DME) synthesis and separation process, over 8% by mole of $CO_2$ is fed to the DME synthesis reactor which lowers DME productivity. Therefore, this work focused on the removal of $CO_2$ using three kinds of processes with physical absorbents by comparing the utility consumption through computer simulation of each process. Among the processes selected for comparison are Rectisol$^{(R)}$ process using methanol, Purisol$^{(R)}$ process using n-methyl pyrrolidone (NMP), and SelexolTM process using dimethyl ethers of polyethylene glycol (DEPG) as a solvent. As a result of this study, it was concluded that Purisol$^{(R)}$ process consumes the least energy followed by SelexolTM process. Therefore, it is considered that Purisol$^{(R)}$ process is the most suitable method to absorb $CO_2$ contained in the feed of DME synthesis reactor.
Keywords
$CO_2$ removal process; Absorption method; Physical solvent; DME production process; Utility consumptions;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 Semelsberger, T. A., Borup, R. L., and Greene, H. L., "Dimethyl Ether (DME) as an Alternative Fuel," J. Power Sources, 156, 497-511 (2006).   DOI
2 Youn, J., Lee, M., Park, C., Hwang, I., Ha, J., and Kang, Y., "Feasibility Test of LPG Vehicles by Using DME-LPG Blends," J. Energy Eng., 24(4), 33-41 (2015).   DOI
3 Oguma, M., "DME Standards Update & Overview," 6th International DME Conference, San Diego (2014).
4 JIS K 2180-1, "Dimethylether for Fuels," Japanese Standard Association (2013).
5 ASTM D7901, "Standard Specification for Dimethyl Ether for Fuel Purposes," ASTM International (2014).
6 ISO 16861, "Petroleum Products - Fuels (Class F)- Specifications of Dimethyl Ether," International Organization for Standardization (2015).
7 KS M 2078, "Determination of Hydrocarbons and Dimethyl Ether (DME) in Liquefied Petroleum Gases (LPG) and LPG-DME Mixtures - Gas Chromatography (GC)," Korean Agency for Technology and Standards (2013).
8 Choi, C. W., Cho, W., Baek, Y. S., and Row, K. H., "Experimental Study on the Synthesis of Dimethyl Ether," J. Korean Ind. Eng. Chem., 17, 125 (2006).
9 Mo, Y. G., Cho, W., and Baek, Y. S., "Development of Direct DME Synthesis Process," J. Korean Inst. Gas, 14, 41 (2010).
10 Cho, D. H., Rho, J. H., Kim, D. S., and Cho, J. H., "A Study for Carbon Dioxide Removal Process Using Methanol Solvent in DME Manufacture Process," J. Korea Acad.-Ind., 14(3), 1502-1511 (2013).
11 Kohl, A. L., and Nielsen, R. B., Gas Purification, 5th ed., Gulf Publishing Company, Houston, Texas (1997).
12 Twu, C. H., Bluck, D., Cunningham, J. R., and Coon, J. E., "A Cubic Equation of State with a New Alpha Function and New Mixing Rule," Fluid Phase Equil., 69, 33-50 (1991).   DOI
13 Olajire, A. A., "$CO_2$ Capture and Separation Technologies for End-of-Pipe Applications - A review," Energy, 35, 2610-2628 (2010).   DOI
14 Karim, A. A., Abdel-Rahman Z. A., and Hadi, A. J., "Solubility Prediction of $CO_2$ in Several Physical Liquid Solvents using ChemCad and HYSYS Simulators," Diyala J. Eng. Sci., 356-373 (2010).
15 UOP LLC, A Honeywell Company, "Meeting Staged $CO_2$ Capture Requirements with the UOP Selexol Process," UOP, 01-19 (2009).
16 Renon, H., and Prausnitz, J. M., "Local Composition in Thermodynamic Excess Functions for Liquid Mixtures," AIChE J., 14(1) 135-144 (1968).   DOI
17 Soave, G., "Equilibrium Constants from a Modified Redlich-Kwong Equation of State," Chem. Eng. Sci., 27, 1197-1203 (1972).   DOI
18 Huang, S. H., and Radosz, M., "Equation of State for Small, Large, Polydisperse and Associating Molecules," Ind. Eng. Chem. Res., 29, 2284 (1990).   DOI
19 Huang, S. H., and Radosz, M., "Equation of State for Small, Large, Polydisperse and Associating Molecules: Extention to Fluid Mixtures," Ind. Eng. Chem. Res., 30, 1994 (1991).   DOI
20 Gross, J., and Sadowski, G., "Perturbed-Chain SAFT: An Equation of State Based on a Perturbation Theory for Chain Molecules," Ind. Eng. Chem. Res., 40, 1244 (2001).   DOI
21 Senol, I., "Perturbed-Chain Statistical Association Fluid Theory (PC-SAFT) Parameters for Propane, Ethylene, and Hydrogen under Supercritical Conditions," Chem. Eng. Sci., 59, 1244 (2011).