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Urmila M. Diwekar has written:

'Batch distillation' -- subject(s): Distillation, SCIENCE / Chemistry / Industrial & Technical

This is one of the testing methods for gasoline and is also called Engler distillation. The whole method is based on the determination of boiling point by performing batch distillation. Boiling point is important for the safety and performance of solvents and fuels. It gives the composition, properties and behavior of fuel. Carrying out batch distillation also determines the volatility which majorly shows the tendency of hydrocarbons to produce explosive vapours. This also tells us the application in different industries depending upon the various temperature behavior of the fuel. Boiling point according to the standards limits distillation based on the product specification.

This is a distillation column that doesn't have a continuous feed. The material that is to be distilled will typically be in a round bottom still at the end of the column.

The two most elementary forms of distillation are a continuous http://www.answers.com/topic/equilibrium-flash-vaporization and a simple http://www.answers.com/topic/batch-distillation. In a continuous equilibrium distillation, a continuously flowing liquid feed is heated or reduced in pressure (flashed) so as to cause partial vaporization. The vapor and liquid disengage while flowing through an open drum, and the products emerge as vapor and liquid streams. The vapor product can be condensed to form a liquid distillate. It is also possible to use a vapor feed, subjected to cooling and thereby http://www.answers.com/topic/partial-condensation, again followed by http://www.answers.com/topic/disengagement of the resultant vapor and liquid in an open drum. In a simple batch distillation, an entire batch of liquid is initially charged to a vessel and is then heated, typically by http://www.answers.com/topic/condensation of steam inside a metal http://www.answers.com/topic/coil within the vessel. Vapor is thereby continuously generated, and may be condensed to form a liquid distillate, which is collected. In the batch distillation, increments of vapor are formed in equilibrium with all liquid compositions ranging from the original to the final, whereas the continuous equilibrium distillation gives vapor in equilibrium with only the final liquid composition. Since the distillate consists primarily of the more volatile components and the feed liquid contains more of these substances than does the final liquid, the simple batch distillation gives a more http://www.answers.com/topic/enrichment distillate than does the continuous equilibrium distillation.