Gravity Gravity principles of rectification rectification factory and process

 

Gravity rectification principles and processes

1. Master the content: Distillation Separation Process Principle and Analysis

2. Focus: the principles of rectification, distillation apparatus effect

3. Difficulties: the principles of rectification, partial gasification and partial condensation in the actual operation of the combination of the distillation process.

Gravity principles of rectification

Distillation: multiple and simultaneous use of partial gasification and partial condensation way to make more complete separation of the mixture obtained in order to get close to the pure components operate separately.

Theoretically obtained several partial gasification less volatile component in the liquid phase of high purity, high purity can be obtained several partial condensation volatile components in the vapor phase, but produce large amount of product leaving the intermediate component pole small and large equipment. Industrial production in the distillation column in the distillation process is part of the gasification process and the partial condensation process and achieve the organic integration of operations.

Gravity flow distillation unit

First, gravity flow distillation unit

A typical distillation apparatus is continuous distillation apparatus comprising distillation column, a condenser, reboiler, etc., as shown in Figure 1-8. Apparatus for distillation column, there are two, namely plate column and packed column, but often uses a plate column.

Continuous distillation operation, the feedstock within the distillation column was continuously fed, from the top and bottom of the column while continuously give the product (distillate bottoms), it is a process operation of a given state.

Second, the role of gravity distillation unit

Gravity distillation column at a feed plate as the boundary is divided into two sections, the rectifying section and the stripping section mention.

1, the role of the rectifying section

Tower section above the feed plate for rectifying section, whose role is to rise by board-enriched vapor phase concentration of volatile components.

2, mention the role of the distillate segment

The following trays including the charging plate, including the stripping section, and its role decreased by plate extract volatile components of the liquid phase.

3, tray role

Tray is a gas-liquid two-phase mass and heat transfer properties. Each piece trays bidirectional gas-liquid two-phase mass transfer, as long as there is a sufficient number of trays, you can separate the mixture into two relatively pure components.

Role 4, the reboiler

Its role is to provide a flow of ascending vapor stream.

5, the role of a condenser

Its role is to provide an overhead liquid product and ensure that there is adequate liquid reflux. Major additional trays concentration reflux volatile components, is a necessary condition for a given state of continuous distillation performed. Distillation is a use of a reflux liquid mixture to obtain high purity distillation separation.

Chong Hing Chemical Equipment Co., Ltd. focus on gravity distillation equipment, gravity distillation machine production, the company's main products: efficient rotary distillation machine, sampler distillation, desulfurization equipment, sewage treatment equipment (saline waste water treatment) all kinds of stainless steel reactor, heat exchangers, condensers, solvent efficient separation device, retorts, continuous centrifuge.

 

Zhejiang Chemical Equipment Co., Ltd. Chong Hing

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