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Vaporizing separator for liquid medium and the like

A technology of liquid medium and separation device, which is applied in the direction of distillation separation, separation method, fractionation, etc., which can solve the problems of reduced accuracy of liquid level detection, difficulty in measuring changing liquid level, failure to meet requirements, etc., and achieve reliability and safety High, corresponding to a wide range of effects

Inactive Publication Date: 2008-12-24
TECHNO SIGMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, when a differential pressure gauge and a weight gauge are used in combination, it is difficult to measure a fluctuating liquid level (such as the liquid level of a stirred or mixed liquid).
First, the accuracy of detecting the position of the liquid level decreases to such an extent that it cannot meet the required level
In addition, it is difficult to determine the position of the liquid level even if calibration is performed with a weight meter, or even if units such as a differential pressure gauge and a weight meter are used together
[0012] All the above-mentioned methods cannot measure the liquid level position of the fluctuating liquid within the required level or cost for a series of vaporization and separation operations such as injecting the refined liquid into the distiller, discharging the refined liquid, and discharging the residue.

Method used

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  • Vaporizing separator for liquid medium and the like
  • Vaporizing separator for liquid medium and the like
  • Vaporizing separator for liquid medium and the like

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0202] In the liquid medium and mixed liquid vaporization separation device 10 of the present invention, first, the container 110 (flask type 10 L capacity) is heated to 35° C. with a hot water bath, and a refrigerant (-10 L) is supplied to the cooling condenser 140 for condensation. °C), and then the rotation (stirring) of the container 110 was started using a large-scale rotary evaporator for solvent evaporation, and detection control for operation preparation was performed.

[0203] Next, the pump 200 was operated for about 5 minutes to discharge the remaining volatile substances in the pump.

[0204] Next, reduce the pressure inside the device (vaporization separation device 10) to the setting value A-1 (-80.0 kPa) of the composite pressure gauge S2. Next, the methanol solution is injected from the unrefined stock solution tank 156 .

[0205] Next, the liquid level position in the container is measured. That is, comparison with the set value B-1 (0.5 kPa) of the differen...

Embodiment 2～9

[0210] The same procedure as in Example 1 was performed except that the type of recovery solvent and the heating bath were shown in Table 2.

[0211] Table 2 shows the results of Examples 1-9.

[0212] Table 2 Recovery of solvent under reduced pressure

[0213]

[0214] Solvent Recovery at Atmospheric Pressure

Embodiment 10

[0216] In the apparatus of the present invention, the same procedure as in "Example 1" was carried out up to the detection and control of the discharge of residual volatile substances due to the detection and control of the initial operation preparation and the detection and control of the liquid supply from the stock solution tank before refining. , so that the temperature of the heating bath is 65°C.

[0217] Then, the gas was flowed in until it reached the setting value F-2 (-1.0 kPa) of the composite pressure gauge, and the pressure of the gas was brought to atmospheric pressure.

[0218] Next, transfer to vaporization separation control. In this control, the diaphragm pump is operated to maintain the set value C-2 (approximately -5 kPa) of the composite pressure gauge S2 while supplying gas into the vaporization container. At the same time, the detection and recovery of the liquid level position are carried out. When it reaches the set value E-2 (0.2kPa) of the differen...

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Abstract

Provided is a fully automatic vaporizing separator for liquid media which is capable of coping with size increase. The vaporizing separator, which is for separating a liquid medium and a liquid mixture, comprises: a vaporizing means in which either of a liquid medium and a liquid mixture comprising the liquid medium and a nonvolatile substance is stored to thereby form a liquid surface and which vaporizes the liquid medium to give a vaporized medium; a separation means which cools a gas discharged from the vaporizing means and the vaporized medium to condense the vaporized medium and thereby convert it into a condensed medium and which thus separates the condensed medium from the gas. The vaporizing separator for a liquid medium and the liquid mixture includes: a pressure-measuring means which measures the pressure of the gas; a pressure-difference determination means which determines the difference between the pressure in a given position in the vaporizing means and the pressure of the gas; and a calculation means which calculates the position of the surface of the liquid relative to that given position from the pressure of the gas and the pressure difference.

Description

technical field [0001] The present invention relates to a vaporization separation device for a liquid medium, which is a fully automatic device capable of accurately measuring the liquid level position of a fluctuating liquid medium, etc., and capable of coping with an increase in size. Background technique [0002] In recent years, interest in environmental issues has increased, and international standards such as ISO and legal systems such as PRTR (Pollutant Release and Transfer Register) for the management of chemical substances that are feared to be harmful to human health and ecosystems have been further developed. In view of this trend, in order to reduce the amount of solvent discharged, interest in reusing the used liquid medium, etc. is increasing. As a device for this purpose, various separation devices have been commercially available recently, and the name is organic solvent distillation. device, solvent regeneration device, automatic solvent recovery device, etc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/42B01D3/00
CPCB01D1/0052B01D3/085B01D3/14B01D3/42B01D5/0063
Inventor 鸟居滋三木浩一是友胜己
Owner TECHNO SIGMA
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