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Drying method and drying device of anionic surfactant

A technology of surfactant and drying method, applied in the field of drying of anionic surfactants, powdery or needle-like finished products, can solve the problems such as no reports on drying method and equipment of ammonium dodecyl sulfate

Active Publication Date: 2012-11-07
上海奥威日化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no reports on the drying method and equipment of lauryl ammonium sulfate

Method used

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  • Drying method and drying device of anionic surfactant

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Effect test

Embodiment 1

[0034] The dodecyl ammonium sulfate slurry, with a temperature of about 45°C and a solid content of about 60%, is preheated to 60°C through the preheating heat exchanger 2, and pumped to the top of the wiped film evaporator 5 through the delivery pump 3 The temperature of the first layer of wiped film evaporator 5 is 110°C, the temperature of the second layer is 105°C, the temperature of the third layer is 100°C, and the temperature of the fourth layer is 95°C. The temperature of the two rollers, the inner surface of the large roller is continuously supplied with cooling medium, the temperature is 20°C, the inner surface of the small roller is continuously supplied with hot water, the temperature is controlled at 80°C, the flakes are sent to the centrifugal mill 20 to produce powder twelve Alkyl ammonium sulfate, the moisture content of the finished product is 5%.

Embodiment 2

[0036] The dodecyl ammonium sulfate slurry, with a temperature of about 45°C and a solid content of about 65%, is preheated to 70°C through the preheating heat exchanger 2, and pumped to the top of the wiped film evaporator 5 through the delivery pump 3 , the temperature of the first layer of wiped film evaporator 5 is 105°C, the temperature of the second layer is 100°C, the temperature of the third layer is 100°C, and the temperature of the fourth layer is 95°C. The temperature of the two rollers, the inner surface of the large roller is continuously supplied with cooling medium, the temperature is 20°C, the inner surface of the small roller is continuously supplied with hot water, the temperature is controlled at 100°C, the flakes are sent to the centrifugal mill 20 to produce powder twelve Alkyl ammonium sulfate, the moisture content of the finished product is 4.2%.

Embodiment 3

[0038] The dodecyl ammonium sulfate slurry, with a temperature of about 45°C and a solid content of about 70%, is preheated to 75°C through the preheating heat exchanger 2, and pumped to the top of the wiped film evaporator 5 through the delivery pump 3 , the temperature of the first layer of wiped film evaporator 5 is 110°C, the temperature of the second layer is 105°C, the temperature of the third layer is 100°C, and the temperature of the fourth layer is 95°C. The temperature of the two rollers, the inner surface of the large roller is continuously supplied with cooling medium, the temperature is 20°C, the inner surface of the small roller is continuously supplied with hot water, the temperature is controlled at 75°C, the flakes are sent to the centrifugal mill 20 to produce powder twelve Alkyl ammonium sulfate, the moisture content of the finished product is 3.8%.

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Abstract

The invention discloses a drying method of anionic surfactant and a drying device of the anionic surfactant, specifically aiming at dodecyl ammonium sulfate. The drying method comprises the steps of preheating 60%-80% of a pasty material of the dodecyl ammonium sulfate to 50-90 DEG C by a preheating heat exchanger, conveying to a thin-film evaporator through a conveying pump to evaporate and dry, conveying dried material slurry discharged from the thin-film evaporator into a tablet pressing machine to form irregular tablets, filtering by a cyclone spiral conveyer and then conveying to process into a powdered material or a needle-like material as needed, and putting the material into a material storeroom to carry out packaging. The method and device provided by the invention have the advantages of preheating the pasty material of the anionic surfactant, drying by the thin-film evaporator, drying efficiently by the minimum temperature difference between a heating medium and the technique product, achieving short retention time, high uniformity and high dryness, operating the device easily and achieving optimized heat energy consumption.

Description

[0001] technical field [0002] The invention relates to a method and equipment for drying anionic surfactants, and is especially beneficial for drying paste-like ammonium lauryl sulfate and making it into powder or needle-like finished products. It belongs to the technical field of paste material drying. Background technique [0003] Ammonium lauryl sulfate is an excellent anionic surfactant with good detergency, hard water resistance, low irritation, high foaming power and excellent compatibility. It is widely used in In personal care products such as toothpaste, shampoo, shower gel, etc., it is especially suitable for formulating low pH value products. Existing finished products of anionic surfactants such as ammonium lauryl sulfate are paste-like slurry, which is inconvenient in production and transportation, and is easy to leak, and requires special containers, which increases the production cost of the production enterprise. More and more production enterprises s...

Claims

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Application Information

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IPC IPC(8): B01D1/24B01D1/30
Inventor 刘爱菊凌秀余段玉臣付卓权孙畅
Owner 上海奥威日化有限公司
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