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Device and method for preparing magnesium hydroxide through ultrasonic-assisted magnesium oxide efficient hydration

A magnesium hydroxide and ultrasonic technology, applied in magnesium hydroxide, chemical instruments and methods, chemical/physical/physical-chemical processes of applying energy, etc., can solve the problem of large consumption of magnesium hydroxide, low product purity, and unsatisfactory purity requirements. Advanced problems, to achieve the effect of continuous and efficient production

Active Publication Date: 2017-02-01
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the first two methods, the magnesium oxide hydration method has the advantages of low cost, simple operation, and less environmental pollution, but its disadvantage is that the product purity is low. Non-demanding areas of environmental governance

Method used

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  • Device and method for preparing magnesium hydroxide through ultrasonic-assisted magnesium oxide efficient hydration
  • Device and method for preparing magnesium hydroxide through ultrasonic-assisted magnesium oxide efficient hydration
  • Device and method for preparing magnesium hydroxide through ultrasonic-assisted magnesium oxide efficient hydration

Examples

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Effect test

Embodiment 1

[0031] A device for preparing magnesium hydroxide through the efficient hydration of magnesium oxide assisted by ultrasonic waves. The device includes a mixing tank 1, a pump I2, a pressure control unit I3, a reactor 4, a pressure control unit II5, a condenser 6, and a two-position tee Valve 7, pressure control unit III 8, steam generator 9, circulation cup 10, ultrasonic generator 11, booster pump II 12, hydrocyclone 13, storage tank 14;

[0032] The discharge port 101 of the mixing tank is connected with the feed port 401 of the reactor through the pump I2 and the pressure control unit I3, and the discharge port 402 of the reactor is connected with the pressure control unit II5, the condenser 6 and the two-position three The port I701 of the two-position three-way valve is connected, the port II702 of the two-position three-way valve is connected with the return port 102 of the mixing tank, and the port III703 of the two-position three-way valve is connected to the hydraulic ...

Embodiment 2

[0034] A kind of method that utilizes the supersonic wave of the device described in embodiment 1 to assist magnesium oxide efficient hydration to prepare magnesium hydroxide, described method comprises the steps:

[0035] ① Add magnesium oxide and water to the mixing tank 1, mix well to obtain magnesium oxide slurry;

[0036] Described magnesium oxide accounts for 15% of total weight;

[0037] ②Pump the product obtained in step ① into the reactor 4 through the pump I2, turn on the steam generator 9, feed water vapor into the reactor 4, heat the reactor 4, and control the pressure of the pressure control unit I3 to 0.25MPa, pressure control The pressure of unit Ⅱ5 is 0.25MPa, the pressure of pressure control unit Ⅲ8 is 0.25MPa, and the reaction temperature is 105°C. Open the port II702 of the two-position three-way valve, close the port III703 of the two-position three-way valve, and return the liquid in the reaction to to the mixing tank 1, and then returned to the reactor 4...

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Abstract

The invention relates to a device and method for preparing magnesium hydroxide through ultrasonic-assisted magnesium oxide efficient hydration. The device comprises a three-phase hydration system, a circulation cup, an ultrasonic generator, a booster pump II and a hydrocyclone. A discharge port of the three-phase hydration system is connected with an inlet of the hydrocyclone through the circulation cup and the booster pump, the ultrasonic generator is arranged in the circulation cup, and a bottom flow opening of the hydrocyclone is connected with a mixing tank in the three-phase hydration system. Online efficient preparation of magnesium oxide and purification of magnesium hydroxide are achieved.

Description

technical field [0001] The invention relates to a device and a method for preparing magnesium hydroxide through high-efficiency hydration of magnesium oxide assisted by ultrasonic waves. Background technique [0002] The synthesis methods of magnesium hydroxide mainly include alkali solution precipitation method, hydrothermal synthesis method and magnesium oxide hydration method. Compared with the first two methods, the magnesium oxide hydration method has the advantages of low cost, simple operation, and less environmental pollution, but its disadvantage is that the product purity is low. The less demanding field of environmental governance. Studies have shown that the magnesium hydroxide product layer formed during the reaction will wrap on the surface of the parent particle, hindering the further progress of the hydration reaction. Scholars have tried to reduce the hindrance of the product layer to the hydration reaction by changing the reaction conditions, thereby incr...

Claims

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Application Information

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IPC IPC(8): C01F5/14B01J19/10
CPCB01J19/10C01F5/14C01F5/145C01P2004/03C01P2006/80
Inventor 朱益民唐晓佳嵇阳远聂毅兴
Owner DALIAN MARITIME UNIVERSITY
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