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Tandem multistage continuous rectification solvent recoverer

A tandem, recycler technology, applied in fractionation and other directions, can solve the problems of large steam loss, large space occupation, low utilization rate, etc., and achieve the effects of low recovery rate, reduced floor space, and long service life.

Inactive Publication Date: 2012-12-05
北京晨翔瑞达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The series-type multi-stage rectification solvent recovery device of this patent includes three heaters and three condensers, which has a relatively complex structure and takes up a large space. At the same time, during the rectification process, the steam loss is large and the utilization rate is low.

Method used

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  • Tandem multistage continuous rectification solvent recoverer
  • Tandem multistage continuous rectification solvent recoverer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028]Take 15% dilute ethanol as an example: the first reboiler 1 and the second reboiler 14 are respectively filled with the dilute concentration solvent, and the steam is turned on for heating. After reaching the boiling point of the solvent, the vaporized liquid produced is The tower evaporates upwards. When the vaporized liquid touches the surface of the precision packing in the tower, the heat exchange process begins on the surface of the packing. At this time, the phenomenon of vapor-liquid separation begins to occur under the action of temperature difference and resistance. The surface of the wall refluxes downward, while the one with light density and low boiling point continues to evaporate upward at a constant temperature, and when it reaches the separator in the top of the tower, reflux separation is carried out, and then part of the light component mixture enters the condenser for condensation. After the vaporized liquid is produced in the cooling process, it flows...

Embodiment 2

[0031] Take 25% dilute ethanol as an example: the first reboiler 1 and the second reboiler 14 are respectively filled with the dilute concentration solvent, and the steam is turned on for heating. After reaching the boiling point of the solvent, the vaporized liquid produced is The tower evaporates upwards. When the vaporized liquid touches the surface of the precision packing in the tower, the heat exchange process begins on the surface of the packing. At this time, the phenomenon of vapor-liquid separation begins to occur under the action of temperature difference and resistance. The surface of the wall refluxes downward, while the one with light density and low boiling point continues to evaporate upward at a constant temperature, and when it reaches the separator in the top of the tower, reflux separation is carried out, and then part of the light component mixture enters the condenser for condensation. After the vaporized liquid is produced in the cooling process, it flow...

Embodiment 3

[0034] Take 35% dilute ethanol as an example: the first reboiler 1 and the second reboiler 14 are filled with dilute concentration solvents respectively, and the steam is turned on for heating. Evaporate upwards. When the vaporized liquid touches the surface of the precision packing in the tower, the heat exchange process begins on the surface of the packing. At this time, the phenomenon of vapor-liquid separation begins to occur under the action of temperature difference and resistance. The surface of the wall refluxes downward, while the one with light density and low boiling point continues to evaporate upward at a constant temperature, and when it reaches the separator in the top of the tower, reflux separation is carried out, and then part of the light component mixture enters the condenser for condensation. After the vaporized liquid is produced in the cooling process, it flows down along the wall of the condenser tube. At this time, the purity of the condensed ethanol i...

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Abstract

The invention provides a tandem multistage continuous rectification solvent recoverer, which comprises a high level metering tank, a first reboiler, a first rectifying tower, a first condenser, a vapour-liquid separator, a tail gas cooler, a second reboiler, a second rectifying tower, an inner separator, a reverse flow tube, a flow guide tube, a third rectifying tower, a second condenser, a rotorflow meter and a circulating pump. By the device, the problem of the limitation on a separation and recovery range of a solvent is solved. The tandem multistage continuous rectification solvent recoverer has a compact structure, low original cost, small occupied area, small occupied space and a small manual operation range, is easier to operate and has the greatest advantages that: on the basis of the prior art, the height of the rectifying tower is lowered and the solvent can be separated without an overhigh rectifying tower body; the tandem multistage continuous rectification solvent recoverer has higher purity than the conventional equipment; and the equipment can achieve an ideal separating effect on any separable organic solvents and the process requirement states can be achieved under the condition that the solvent does not flow back.

Description

technical field [0001] The invention relates to a recovery device, in particular to a serial multi-stage continuous rectification solvent recovery device. Background technique [0002] In the field of chemical organic solvent waste liquid recovery, the separation process of multiple mixed solvents has always been an important research topic. Looking at the relevant literature at home and abroad, how to completely separate multiple mixed solvents has always been a problem in the technical field of rectification. Experts, at present, our country has created and invented many kinds of separation technologies in the field of rectification, but they all have certain limitations. Compared with many solvents, only a few selective solvents can be used for separation, and none of them can achieve the final ideal effect. , The traditional solvent separation and recovery equipment tower is tall and heavy, occupies a large area and takes up a lot of space, the original cost is too high,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/14
Inventor 徐凡卜
Owner 北京晨翔瑞达科技有限公司
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