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Received July 29, 2009
Accepted February 14, 2010
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A comparative study on the recovery of 1,2-dichloroethane and the removal of benzene contained in the byproducts of VCM process
Department of Materials Science and Engineering, Hongik University, 300, Shian, Yongi, Chungnam 339-701, Korea 1Department of Automotive Engineering, Hoseo University, 268, Anseo, Asan, Chungnam 330-713, Korea 2Department of Chemical Engineering, Kongju National University, 275, Budae-dong, Cheonan, Chungnam 331-240, Korea
jhcho@kongju.ac.kr
Korean Journal of Chemical Engineering, March 2010, 27(3), 970-976(7), 10.1007/s11814-010-0206-7
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Abstract
A comparative study has been performed to compare initial investment costs and operation costs for two different process configurations. The two processes were used to recover 1,2-dichloroethane (EDC) and to remove benzene contained in the byproducts of the vinyl chloride monomer (VCM) process. The objectives of this process were to recover 70% of EDC contained in the byproducts and to reduce the benzene content below 0.7 wt%. The first process configuration for comparison is a conventional distillation column that consists of upper and lower columns. The other process configuration is an extractive distillation process that uses Normal Formyl Morpholine (NFM) as a solvent to remove benzene. The conventional distillation process which consists of upper and lower distillation columns was superior to the extractive distillation process, which used a solvent, in the aspects of the initial investment and annual operating cost.
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References
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Bruzzi V, Colaianni M, Zanderighi L, Energy Conv. Manag., 39(16-18), 1853 (1998)
Holland CD, Fundamentals of multicomponent distillation, 1st Ed., McGraw-Hill (1981)
Cho JH, Park JK, Lee TJ, The Sixth International Symposium on Separation Technology, 203 (2002)
Ko MS, Na S, Cho J, Kim H, Korean J. Chem. Eng., 19(6), 996 (2002)
Renon H, Prausnitz JM, AIChE J., 14, 135 (1968)
Nelder JA, Mead RA, Comput. J., 7, 303 (1965)
PRO/II Input Manual, Simulation Science Inc., South Lake Forest (2005)
