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Technique for producing zinc stearate by dry method and device

A zinc stearate and production process technology, which is applied in carboxylate preparation, chemical/physical/physical chemical fixed reactors, organic chemistry, etc., can solve the problems of yellowish product color and high reaction temperature, and achieve drying energy Large consumption, high degree of dispersion and low production efficiency

Active Publication Date: 2009-12-23
HUZHOU CITY LINGHU XINWANG CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that due to the relatively high reaction temperature, the color of the obtained product is yellowish

Method used

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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: Reaction raw materials: 67 kilograms of zinc carbonate, 330 kilograms of stearic acid, 20 kilograms of deionized water.

[0032] First put stearic acid into the reaction vessel 4 through the feeding port 6, heat and stir for about 10 minutes, and after the temperature rises to 50°C, put zinc carbonate into it, and after fully stirring, pour 20kg of deionized water from the feeding port, and pass The gas inlet and outlet pipe port 7 is continuously fed with nitrogen, and the air in the reaction vessel 4 is discharged from the top feeding port 6. After gradually replacing the air in the reaction container 4 with nitrogen, the feeding port 6 is closed tightly. While stirring, gradually heat the reaction mass to between 80°C and 110°C. Open the gas inlet and outlet pipeline port 7 valves, the CO generated in the reaction process 2 , deionized water vapor and the water vapor generated by the reaction are discharged from the reaction vessel 4. After reacting f...

Embodiment 2

[0033] Embodiment 2: Reaction raw materials: 30 kilograms of zinc oxide, 200 kilograms of stearic acid, 10 kilograms of deionized water.

[0034] First, zinc oxide is put into the reaction vessel 4 through the feeding port 6, stirred and added with deionized water, after the reaction between the zinc oxide and the water is completed, stearic acid is put in, and nitrogen gas is constantly introduced 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 110°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, deion...

Embodiment 3

[0038] Embodiment 3: asfigure 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 agitator 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 zinc stearate by a dry method. The technique comprises the following steps of: adding stearate, zinc compound and water in a mass ratio of 82 to 88%:10 to 15%:2 to 5% into a reactor, stirring and reacting for 1 to 5 hours at temperature of 50 to 150 DEG C and pressure of 0 to 0.10 MPa, and then obtaining the zinc 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 simple technique, little equipment investment, short production period, no wastewater discharging, high efficiency and low cost; and compared with a melting method, the technique has lower reaction temperature, low energy consumption and good whiteness and the obtained rough product after the reaction is ended is more loose and easy to be crushed.

Description

technical field [0001] The present invention relates to a kind of production technology and device of zinc stearate, specifically a kind of technology and device of dry production zinc stearate. Background technique [0002] Zinc stearate is mainly used as a non-toxic stabilizer for polyvinyl chloride, a lubricant for cosmetics, a styrene resin, a release agent for bakelite products, a flatting agent for paint, and a softener and release agent for rubber in the rubber industry. There is a wide range of markets outside. Especially with the strengthening of people's awareness of environmental protection and the promulgation of relevant laws and regulations, zinc stearate and calcium stearate are important raw materials for calcium-zinc composite stabilizers. The market demand has further expanded, and the research on its synthesis process has also increased attention. [0003] The earliest production process of zinc stearate was double decomposition. The process is roughly ...

Claims

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Application Information

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