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Continuous liquid separation device and organic solvent separation method using the device

An organic solvent and liquid separation technology, which is applied in chemical instruments and methods, grease/oily substance/suspended matter removal devices, neutralized water/sewage treatment, etc., can solve problems such as high energy consumption, high pressure on environmental protection, time-consuming and labor-intensive problems

Active Publication Date: 2022-04-15
兰升生物科技集团股份有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a recovery method produces a large amount of waste water containing organic impurities and salts, which poses a great pressure on environmental protection, and because rectification is required, the energy consumption is large, time-consuming and laborious, resulting in increased production costs

Method used

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  • Continuous liquid separation device and organic solvent separation method using the device
  • Continuous liquid separation device and organic solvent separation method using the device
  • Continuous liquid separation device and organic solvent separation method using the device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1 reclaims toluene from aqueous waste toluene

[0057] Put the water-containing waste toluene into the recovery kettle 8, heat it to boiling, the toluene vapor is condensed into a liquid through the condenser 9, and enters the liquid separation tank 1 through the guide pipe 2, after automatic stratification, the upper layer of toluene enters through the overflow port 3 In the second separatory tank 1. After the liquid separation treatment in the two liquid separation tanks 1 connected in series, the moisture content in the toluene measured by the Fischer moisture determination method is less than 0.03%, reaching the qualified standard. Qualified toluene enters the storage tank from the overflow port 3 of the second liquid separation tank 1, and the stratified water phase is deposited at the bottom of the two liquid separation tanks 1. When the water layer reaches a specified height through the interface meter 6, it passes through the bottom The bottom valve ...

Embodiment 2

[0059] Embodiment 2 reclaims toluene from waste toluene containing hydrochloric acid

[0060] Add 10-15% sodium hydroxide aqueous solution as washing liquid into the two liquid separation tanks 1 until the specified liquid level is reached, put the waste toluene containing hydrochloric acid into the recovery kettle 8, heat to boiling, and the toluene vapor passes through the condenser 9 is condensed into a liquid, and enters the liquid separation tank 1 through the flow guide pipe 2, and the pipe diameter of the flow guide pipe 2 is the same as that of the connecting pipe between the condenser 9 and the liquid separation tank 1. After automatic stratification, the upper layer of toluene enters the liquid separation tank 1 through the overflow port 3, and two liquid separation tanks 1 are arranged in series. After the liquid separation treatment in the two liquid separation tanks 1, the pH value of the toluene was measured to be neutral, and the water content in the toluene was...

Embodiment 3

[0062] Embodiment 3 reactant phase separation

[0063] The reaction mixture is introduced into the clarification tank 10, and after preliminary phase separation in the clarification tank 10, the upper organic phase containing the target substance automatically overflows into the liquid separation tank 1 through the draft pipe 2 through the potential difference. After automatic stratification, the upper organic phase enters the next liquid separation tank 1 through the overflow port 3, and two liquid separation tanks 1 are arranged in series. After the liquid separation treatment in the two liquid separation tanks 1, the upper organic phase was measured by the Fischer moisture determination method. 3 Enter the storage tank or the reaction vessel in the next step, the layered lower water phase is deposited at the bottom of the two separator tanks 1, and when it reaches the specified height through the interface meter 6, it is discharged through the bottom valve 9 at the bottom. ...

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Abstract

This application relates to a continuous liquid dispensing device, which includes at least one liquid dispensing tank, the interior of the liquid dispensing tank is provided with a guide pipe extending into the middle and lower part of the tank, the upper part of the tank is provided with an overflow port and a vent port, and the bottom of the tank is provided with With bottom valve. The present application also relates to an organic solvent separation method using the device.

Description

technical field [0001] The application relates to a continuous liquid separation device and an organic solvent separation method using the device. Background technique [0002] With the rapid development of the chemical industry, the country has increasingly strict environmental protection requirements for the chemical industry, and the recovery and treatment of chemical organic waste liquid is becoming more and more difficult. At present, most of the recovery of organic solvents is treated by alkali or pickling, and then separated. A neutral organic solvent is obtained, and then a pure organic solvent is recovered through a rectification tower. However, such a recovery method produces a large amount of waste water containing organic impurities and salts, which poses a great pressure on environmental protection, and because rectification is required, the energy consumption is large, time-consuming and laborious, resulting in increased production costs. Contents of the inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/10
CPCC02F1/66C02F1/048C02F1/40
Inventor 董志鹏郭庆春郭红永刘海龙朱振刚
Owner 兰升生物科技集团股份有限公司