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Technique for producing magnesium stearate by dry method and device

A technology of magnesium stearate and stearic acid, applied in carboxylate preparation, chemical/physical/physicochemical stationary reactors, organic chemistry, etc., can solve high production cost, long production cycle, high labor intensity, etc. Problems, to achieve the effect of low production efficiency, high storage and transportation costs, and large drying energy consumption

Active Publication Date: 2012-11-21
HUZHOU CITY LINGHU XINWANG CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The method of producing magnesium stearate in the traditional process is the metathesis method, which has a large amount of waste water, long production cycle, complicated operation, high labor intensity and high production cost. The above-mentioned shortcomings of the metathesis method can be overcome by using the dry method

Method used

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  • Technique for producing magnesium stearate by dry method and device
  • Technique for producing magnesium stearate by dry method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: Reaction raw material: 40 kilograms of magnesium hydroxide, 310 kilograms of stearic acid, 12 kilograms of deionized water.

[0034] Put the stearic acid into the reaction vessel 4 through the feeding port 6, heat and stir for about 10 minutes, after the temperature rises to 50°C, put the magnesium hydroxide into it, and after fully stirring, pour 12kg of deionized water from the feeding port, and pass the gas The inlet and outlet pipeline port 7 is continuously fed with nitrogen, and the air in the reactor 4 is discharged from the top feed port 6. After gradually replacing the air in the reactor 4 with nitrogen, the valves of the feed port 6 and the gas inlet and outlet pipe port 7 are tightly closed. While stirring, gradually heat the reaction mass to between 80°C and 120°C. Keep the vapor pressure formed by the deionized water and the reaction water in the reactor 4 between 0 and 0.1 MPa. After reacting for about two hours, open the valve of the gas in...

Embodiment 2

[0035] Embodiment 2: Reaction raw materials: 28 kilograms of magnesium oxide, 200 kilograms of stearic acid, 14 kilograms of deionized water.

[0036] First, magnesium oxide is put into the reaction vessel 4 through the feeding port 6, stirred and added with deionized water, after the magnesium oxide and water are completely mixed, stearic acid is put into it, and nitrogen gas is constantly fed through the gas inlet and outlet pipe port 7, and the reaction vessel 4 The air is discharged from the top feeding port 6, and after gradually replacing the air in the reaction vessel 4 with nitrogen, close the feeding port 6 and the gas inlet and outlet pipe port 7 valves. While stirring, gradually heat the reaction mass to between 80°C and 120°C. Keep the vapor pressure formed by the deionized water and the reaction water in the reactor 4 between 0-0.1 MPa. After reacting for about two hours, open the valve of the gas inlet and outlet pipeline 7, and discharge the nitrogen, deionized...

Embodiment 3

[0039] Embodiment 3: as figure 1 , 2 As shown, the reaction device includes a reaction vessel 4, a feeding port 6 and a jacket 8, the motor 1 is connected with the speed reducer 2, the speed reducer 2 is connected with the gear transmission 3, and the gear transmission 3 is connected with the agitator 9 installed in the reaction vessel 4 , the stirrer 9 is 2, and reverse shear rotation, variable frequency speed regulation; The reaction vessel 4 is a pressure vessel, the top of the reaction vessel 4 is provided with a feeding port 6, a gas inlet and outlet pipe port 7 and a temperature measuring port 5, the reaction vessel A jacket 8 is set outside 4, a discharge port 10 is set under the reaction vessel 4, and a steam and cooling water inlet 11 and a steam and cooling water outlet 12 are set on the side of the jacket 8, which can be heated or cooled by steam or cooling water.

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Abstract

The invention discloses a technique for producing magnesium stearate by a dry method. The technique comprises the following steps of: adding stearate, magnesium compound and water with proportion of 82 to 88%:10 to 15%:2 to 5% into a reactor, stirring and reacting for 1 to 5 hours with temperature of 80 to 120 DEG C and pressure of 0 to 0.10 MPa, and then obtaining the magnesium stearate. The reaction device is characterized in that a motor (1) is connected with a speed reducer (2) which is connected with a gear transmission (3); the gear transmission (3) is connected with a stirrer (9) arranged in a reaction container (4); and a temperature measuring port (5) and a feeding port (6) are arranged above the reaction container (4) which is externally provided with a clamping sleeve (8), and a discharging port (10) is arranged below the reaction container (4). The invention has the advantages of simple technique, little equipment investment, short production period, no wastewater discharging, high efficiency, low cost, loose finished product, fine particle size, good quality, no aftertreatment and the like.

Description

technical field [0001] The present invention relates to a kind of production technology and device of magnesium stearate, specifically a kind of technology and device of dry production magnesium stearate. Background technique [0002] Magnesium stearate is an important raw material for cosmetic powders and pharmaceutical tablets, and can also be used as a drier and flattening agent for paints and a stabilizer for plastic products. [0003] The method of producing magnesium stearate by traditional technology is double decomposition method, and this process waste water volume is big, and production cycle is long, and operation is complicated, and labor intensity is big, and production cost is high, and application dry method can overcome the above-mentioned shortcoming of double decomposition method. Contents of the invention [0004] The technical problem to be solved by this invention is to provide a kind of technology and the device of producing magnesium stearate by dry ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C53/126C07C51/41B01J19/18
Inventor 沈云飞罗明壮
Owner HUZHOU CITY LINGHU XINWANG CHEM CO LTD