Preparation method and device for powdery fatty acid methyl ester sodium sulfonate

A technology for preparing sodium fatty acid methyl ester sulfonate and equipment, which is applied in the field of hot air drying to prepare powdered sodium fatty acid methyl ester sulfonate, which can solve the problems of inconsistency between particles and washing powder particles, large fluctuations in product quality, and affecting washing effect, etc., to achieve Conducive to daily maintenance, low production cost, and increased product yield

Inactive Publication Date: 2016-01-20
JIAXING ZANYU TECH DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still two problems with the use of this product in washing powder: 1. The particles obtained by the pulverization process are inconsistent with the washing powder particles, and unevenness is prone to occur, resulting in large fluctuations in product quality; 2. The krafft point of MES is relatively high ( At about 25°C), it is easy to appear when washing in cold water. The washing has been completed but the white granular MES still adheres to the undissolved clothes, which affects the washing effect

Method used

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  • Preparation method and device for powdery fatty acid methyl ester sodium sulfonate

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Effect test

preparation example Construction

[0027] In the preparation device provided by the present invention, the drying tower (ie, the hot air drying tower) is designed as three functional sections arranged from top to bottom, namely the settling section 3 , the drying section 4 and the cooling section 5 . The drying section mainly realizes the drying of MES materials. The moisture content of the dried MES is less than 3%, and it falls to the cooling section under the action of gravity; the cooling section can quickly cool the materials to ensure that the temperature of the dried powdered MES when it leaves the drying tower is lower than 40℃, keep solid and not stick together; the designed settling section can minimize the material entrained in the dried hot air tail gas and increase the product yield; the hot air tail gas goes up through the exhaust port at the top of the settling section , and then pass through the cyclone separator 2 and the bag filter 1 in turn.

[0028] The material inlet is between the settling...

Embodiment 1

[0034] The material with MES content of 30% is preheated to a temperature of 50 ℃ ~ 60 ℃ with a coil heater, transported to the atomizer by a pump, and atomized by the atomizer into the drying section of the drying tower; the temperature of 200 ℃ ~ 250 ℃ The hot air enters the drying tower through multiple inlets arranged in a ring, and is in countercurrent contact with the atomized material for drying; after drying, the material enters the cooling section of the drying tower downward, and contacts with the cold air at the bottom of the drying tower with a temperature of 25°C to 30°C. Cool down to a temperature of ≤39°C, the material continues downwards, and comes out from the bottom of the drying tower into the fluidized bed for further cooling to below 28°C, and then the cold air is transported to a high-speed hammer mill to obtain powdered MES, moisture content: 2.8%, Apparent density: 269g / L.

Embodiment 2

[0036] The material with MES content of 55% is preheated to a temperature of 55 ℃ ~ 65 ℃ with a jacket heater, transported to the atomizer by a pump, and atomized by the atomizer into the drying section of the drying tower; the temperature is 170 ℃ ~ 210 ℃ The hot air enters the drying tower through a plurality of annularly arranged inlets, and is in countercurrent contact with the atomized material for drying; after drying, the material enters the cooling section of the drying tower downward, contacts with the cold air at the bottom of the drying tower with a temperature of 20 °C, and is rapidly cooled to 20°C. When the temperature is lower than 30°C, the material continues downward, and comes out from the bottom of the drying tower into the fluidized bed for further cooling until the temperature is lower than 25°C, and then the cold air is transported to the high-speed hammer mill to obtain powdery MES, moisture content: 2.2%, Apparent density: 356g / L.

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Abstract

The invention relates to a preparation method and device for powdery fatty acid methyl ester sodium sulfonate. The invention aims at providing the method capable of realizing the MES granularity basically identical to that of washing powder. The device has the characteristic of a simple and compact structure. The preparation method for powdery fatty acid methyl ester sodium sulfonate has the technical scheme that the preparation method for powdery fatty acid methyl ester sodium sulfonate is carried out according to the following steps that (1) water-containing MES materials are conveyed to an atomizer to be dried; (2) a powder body enters a cooling section, is cooled by cold air and is then discharged from the bottom of a tower; (3) a powdery fatty acid methyl ester sodium sulfonate product is obtained. The preparation device of the powder fatty acid methyl ester sodium sulfonate comprises a cyclone separator, a cloth bag dust remover and a drying tower, wherein the atomizer is arranged between a sedimentation section and a drying section; a plurality of hot air inlets are formed between the drying section and a cooling section; exhaust openings are sequentially communicated with the cyclone separator and the cloth bag separator; the bottom of the cooling section is provided with a cold air inlet; the bottom end of the cooling section is also sequentially communicated with a fluidized bed, a crushing machine and a powder cabin through pipelines.

Description

technical field [0001] The invention relates to a method and a device for preparing powdery sodium fatty acid methyl ester sulfonate by hot air drying. Background technique [0002] Sodium Fatty Acid Methyl Estersulfonate (MES for short) is a new type of anionic surface with excellent performance obtained from palm oil as raw material, through transesterification and hydrogenation to obtain fatty acid methyl ester, and then through sulfonation, re-esterification and neutralization. active agent. [0003] MES has the advantages of good detergency, mildness, non-toxicity and low irritation to human body, and its phosphorus-free properties are better than those of petroleum-based products. Phosphorus-friendly detergents, especially phosphorus-free laundry detergents. However, there is a C-O-C ester bond in the MES structure, which is easily saponified and hydrolyzed into sodium fatty acid sodium sulfonate (disodium salt for short) with poor water solubility and detergency in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C309/17C07C303/32B01D1/18B01D1/14
Inventor 胡剑品夏雄燕陶华东王侃方银军
Owner JIAXING ZANYU TECH DEV CO LTD
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