What Is Batch Distillation?

Batch distillation is also called batch distillation. At the beginning of the batch distillation operation, all the materials are added to the rectification tower, and then gradually heated and vaporized. After the vapor from the top of the tower is condensed, one part is used as the distillate product, and the other is returned to the tower as reflux. After the composition is reduced to the specified value, it is discharged once and then subjected to the next batch of rectification operations. Therefore, compared with continuous distillation, batch distillation has two characteristics: (1) batch distillation is an unsteady state process; (2) batch distillation column has only rectification section. ^[1]

Batch distillation

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Batch distillation is also called batch distillation. At the beginning of the batch distillation operation, all the materials are added to the rectification tower, and then gradually heated and vaporized. After the vapor from the top of the tower is condensed, one part is used as the distillate product and the other is returned to the tower as reflux. After the composition is reduced to the specified value, it is discharged once and then subjected to the next batch of rectification operations. Therefore, compared with continuous distillation, batch distillation has two characteristics: (1) batch distillation is an unsteady state process; (2) batch distillation column has only rectification section. ^[1]

Batch distillation is also called batch distillation, discontinuous distillation. It is characterized by intermittent operation, the raw material liquid is added to the distillation kettle once, and it is partially vaporized by heating. Due to the difference in volatility between the components, the content of volatile components in rising steam is higher than that in the liquid phase It was concentrated once to obtain first-order separation. The parameters such as the amount and composition of the kettle liquid and the amount and composition of the distillate all change at any time, which is an unstable process. Generally, the operation is stopped when the specified composition of the kettle liquid or the average composition of the distillate is distilled. Batch distillation can be divided into simple distillation and batch distillation.