Continuous countercurrent differential extraction method and equipment
A differential and countercurrent technology, applied in the direction of liquid solution solvent extraction, etc., can solve the problems of high cost and complicated operation process, and achieve the effect of low recovery and treatment cost, cost reduction and less solvent
Active Publication Date: 2016-06-15
LIUZHOU BEIDIFEN TECH +1
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[0005] The invention provides a continuous countercurrent differential extraction method and equipment, the continuous countercurrent differential extraction method and equipment can solve the problems of complex operation process and high cost in industrial extraction in the prior art
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[0030] Preparation of dodecyl glucoside mixture: using dodecyl alcohol, p-toluenesulfonic acid, and glucose as raw materials, the direct glucoside method is used to synthesize dodecyl glucoside. After the reaction is completed, a mixed solvent of acetone and water is added to adjust The pH is 8-9, and the glycoside mixture is obtained.
[0031] The composition of the mixed solvent of acetone and water and the determination of the water phase discharge ratio: Weigh 5g of the reaction product in a graduated test tube, add 5ml of acetone, heat in a water bath at 45°C, gradually add water dropwise under shaking, the material changes from turbidity to homogeneity, continue to drop Add water until the layers are just separated and the upper and lower layers are clear and transparent; according to the amount of acetone and water added, the ratio of acetone to water is calculated to be about 2:1, and the amount of mixed solvent added is 1.5 times that of the reaction product; judge acc...
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The invention discloses a continuous countercurrent differential extraction method and equipment. The equipment comprises a material mixer, a continuous countercurrent differential extraction tower, a heavy phase solution receiver and a light phase solution receiver; the continuous countercurrent differential extraction tower is a vertical column Shaped tower body, the tower body is divided into upper, middle and lower sections, each section is equipped with a temperature measuring device; the upper section of the tower body is equipped with a cooling device, the middle section of the tower body is equipped with a feeding device, and the lower section of the tower body is equipped with a heating device, the bottom of the tower body is provided with a discharge port, the discharge port is connected with a heavy phase solution receiver, the top of the tower body is provided with an overflow port, and the overflow port is connected with a light phase solution receiver; the method is to first separate the material to be separated with The light phase solvent and the heavy phase solvent are made into a mixture, and then input into the device of the present invention at a certain flow rate for continuous countercurrent differential extraction. The invention requires less solvent, and solves the problems of complicated industrial extraction operation process and high production cost in the prior art.
Description
technical field [0001] The invention belongs to the technical field of chemical separation, in particular to a continuous countercurrent differential extraction method and equipment. Background technique [0002] Liquid-liquid extraction refers to the use of the difference in solubility or distribution coefficient of the solute in two immiscible (or slightly soluble) solvents to transfer the solute from one solvent to another to achieve the purpose of separation or extraction . And through repeated extraction, most of the solute can be extracted. [0003] The differential contact countercurrent extraction method is a method in which the extract phase and the raffinate phase are countercurrently differentially contacted, so that the solute concentration in the two phases changes continuously along the flow direction. [0004] The existing liquid-liquid extraction technology needs to completely extract the required substances from the solution. It is difficult to achieve the...
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IPC IPC(8): B01D11/04
Inventor 吴国勇李利军吴承武
Owner LIUZHOU BEIDIFEN TECH