Method for preparing powdery Alpha-olefin sulfonate and preparation device

An olefin sulfonate, powdery technology is applied in the field of preparation of surfactants, which can solve the problems of high energy consumption, inconvenient packaging and use, no industrialized production, etc., and achieves low equipment requirements, easy maintenance, and equipment volume and size. The effect of reduced processing power

Active Publication Date: 2013-04-03
JIAXING ZANYU TECH DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] About 70% of AOS is in the form of paste when it is first produced, and gradually forms a solid gel at room temperature, which makes the packaging inconvenient and has not yet been industrialized.
Using this equipment to produce AOS products, the drying efficiency has been improved to a certain extent, but since the drying starts from 30-40% AOS, the energy consumption is relatively large

Method used

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  • Method for preparing powdery Alpha-olefin sulfonate and preparation device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The production of powdered AOS is carried out on the LPG-100 centrifugal spray drying tower; the centrifugal spray drying tower is turned on, and the heated dry air is introduced. The inlet temperature of the dry air is 300°C, and the flow rate is 1000m 3 / min, start the stirring of the mixing and stirring tank, the AOS acid ester after sulfonation and aging is adjusted to a flow rate of 200kg / h through a pneumatic regulating valve, and is pumped into the mixing and stirring tank through a metering pump, and at the same time, the liquid caustic soda is adjusted to a flow rate of 100kg / h through a pneumatic regulating valve h, enter the mixing tank through the metering pump, and then feed steam to heat the material in the mixing tank. The heating temperature is 190 ° C, and the concentration of liquid caustic soda is 32%. After the mixed material stays for 30 minutes, open the mixing tank Bottom valve, the material enters the centrifugal spray drying tower for centrifugal...

Embodiment 2

[0059] Powdery AOS production is carried out on the LPG-100 centrifugal spray drying tower; the centrifugal spray drying tower is turned on, and heated dry air is introduced. The inlet temperature of the dry air is 350°C, and the flow rate is 800m 3 / min, start the stirring of the mixing and stirring tank, the AOS ester after sulfonation and aging is adjusted to a flow rate of 170kg / h through a pneumatic regulating valve, and is pumped into the mixing and stirring tank through a metering pump, and at the same time, the liquid caustic soda is adjusted to a flow rate of 120kg / h through a pneumatic regulating valve h, enter the mixing tank through the metering pump, and at the same time, feed steam to heat the material in the mixing tank. The heating temperature is 170°C, and the concentration of liquid caustic soda is 25%. After the mixed material stays for 20 minutes, open the mixing tank Bottom valve, the material enters the centrifugal spray drying tower for spray drying; the ...

Embodiment 3

[0062] Powdered AOS production is carried out on the YPG-100 pressure spray drying tower, the pressure spray drying tower is turned on, and heated dry air is introduced. The inlet temperature of the dry air is 220°C and the flow rate is 700m 3 / min, start the stirring of the mixing tank, the AOS acid ester after sulfonation and aging is adjusted to a flow rate of 200kg / h through a pneumatic control valve, and is pumped into the mixing tank through a metering pump, and at the same time, the liquid caustic soda is adjusted to a flow rate of 80kg / h through a pneumatic control valve h, enter the mixing tank through the metering pump, and at the same time, feed steam to heat the material in the mixing tank. The heating temperature is 180°C, and the concentration of liquid alkali is 42%. After the mixed material stays for 25 minutes, open the mixing tank Bottom valve, the material enters the pressure spray drying tower for spray drying; the mixed air flow enters the first-stage cyclo...

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Abstract

The invention relates to a method for preparing powdery Alpha-olefin sulfonate and a preparation device and aims to achieve the purposes that the energy consumption is low, the device is compact in structure, the investment can be saved, and the operation is stable. The technical scheme is as follows: the method for preparing the powdery Alpha-olefin sulfonate comprises the following steps: 1), stirring, mixing and heating; and introducing dry air; 2), performing atomization; 3), performing primary separation, so that a powdery material enters a power bin; and 4), performing secondary separation, so that the powdery material enters the power bin, the secondary mixed gas flow is evacuated through an induced draft fan; and the heated dry air comes from evacuated tail gas of an air drying system or a nearby sulphuric acid plant. The device for preparing the powdery AOS (Alpha-olefin sulfonate) comprises a feeding device, a spray drying tower, a cyclone separation device and a de-dusting device and is characterized in that a feeding port and a dry air inlet are arranged at the top end of the spray drying tower, a mixed gas flow outlet is arranged on one side of the spray drying tower, and a washing outlet is arranged at the bottom of the spray drying tower.

Description

technical field [0001] The invention relates to a preparation method and a preparation device of a surfactant, in particular to a preparation method and a preparation device of powdery α-olefin sulfonate (hereinafter referred to as AOS). technical background [0002] α-Olefin sulfonate is an anionic surfactant with excellent performance, which has good water solubility, foaming property and wettability; it has excellent resistance to hard water and good detergency; it is stable in acid-base medium, Good compatibility; low toxicity, low irritation and good biodegradability. Due to the excellent performance of AOS, it has a wide range of uses in both household and industry. In personal care products, it can be used in formulas such as hand sanitizer, shampoo, toothpaste, bath liquid, foam bath, etc.; in household washing, it is suitable for dish detergent, heavy-duty laundry detergent, synthetic soap, liquid soap, wool, Feather cleaning agent; in industry, it can be used as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C303/32C07C303/44C07C309/20
Inventor 王文德张义勇杨春良秦志荣方银军
Owner JIAXING ZANYU TECH DEV CO LTD
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