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Continuous distillation is an ongoing process in which a liquid mixture of two or more miscible components is continuously fed into the process and continuously separated into two or more products by preferentially boiling the more volatile components out of the mixture. When a liquid mixture is heated, the evolved vapor will have a higher concentration of the more volatile (i.e., lower boiling point) components than the liquid from which it evolved. Conversely, if a vapor mixture is cooled, the less volatile components will tend to condense in a higher proportion than the more volatile components.[1][2][3][4]
Continuous distillation is used widely in the chemical process industries where large quantities of liquids have to be distilled, as in petroleum refining, natural gas processing, petrochemical production, coal tar processing and the liquefaction of gases such as hydrogen, oxygen, nitrogen, and helium).
Distillation is one of the unit operations of chemical engineering. If the feed contains more than two components, it is referred to as multi-component distillation. If the feed mixture consists of only two components, the process is referred to as binary distillation.
- ↑ Kister, Henry Z. (1992). Distillation Design, 1st Edition. McGraw-Hill. ISBN 0-07-034909-6.
- ↑ King, C.J. (1980). Separation Processes. McGraw Hill. 0-07-034612-7.
- ↑ Perry, Robert H. and Green, Don W. (2007). Perry's Chemical Engineers' Handbook, 8th Edition. McGraw-Hill. ISBN 0-07-142294-3.
- ↑ McCabe, W., Smith, J. and Harriott, P. (2004). Unit Operations of Chemical Engineering, 7th Edition. McGraw Hill. ISBN 0-07-284823-5.