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A production process and device for comprehensive recycling of α-alkenyl electrostatic acid

An electrostatic acid and alkenyl technology, which is applied in the production process and device field of comprehensive recycling of α-alkenyl electrostatic acid, can solve the problem that the neutralization heat cannot be well utilized, the by-product sultone is contained, and the difficult sultone Complete hydrolysis of esters and other problems, to achieve the effects of stable and controllable neutralization heat release, reduced energy consumption, and low equipment requirements

Active Publication Date: 2016-09-07
ZANYU TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN 102311888A and CN 102311893A respectively disclose a recovery method of electrostatic acid. This method adopts intermittent neutralization in a kettle. The neutralization heat release is relatively large, and it is easy to expand and overflow the pot. The material is cooled, and the neutralization heat cannot be obtained very much. good use
At the same time, when reclaiming AOS electrostatic acid, because it contains more intermediate product sultone, it is difficult to realize the complete hydrolysis of sultone using the above process, which will make the product contain by-product sultone

Method used

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  • A production process and device for comprehensive recycling of α-alkenyl electrostatic acid

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Experimental program
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Effect test

Embodiment 1

[0039] The electrostatic acid and 32% liquid caustic soda produced in the production process of organic material α-olefin and sulfur trioxide sulfonation enter the static mixer at the same time. The weight ratio of electrostatic acid to liquid caustic soda is 1:1, and the two are fully in the static mixer. Mix and neutralize, and control the pressure of the material in the static mixer to reach 0.5Mpa (the temperature after neutralization is 120℃) through the back pressure valve, enter the heat exchanger and exchange heat with the dry air, then cool to 60℃, and then enter the rotary spray drying Device. At the same time, the dry air is heated up to 90°C through the heat exchanger, and then heated to 130°C through an air heater to enter the rotary spray dryer. After the mixture is atomized into droplets, it is contacted with hot air in the downstream direction to finally obtain a granular product with a solid content of 94.8%, an active substance of 32%, a pH of 9.3, and a parti...

Embodiment 2

[0042] The electrostatic acid and 32% liquid caustic soda produced in the production process of organic material α-olefin and sulfur trioxide sulfonation enter the static mixer at the same time. The weight ratio of electrostatic acid to liquid caustic soda is 1:1, and the two are fully in the static mixer. Mix and neutralize, and control the pressure of the material in the static mixer to reach 0.5Mpa (the temperature after neutralization is 120°C) through the back pressure valve, enter the heat exchanger and exchange heat with the dry air, then cool to 70°C, and then enter the spray dryer. At the same time, the dry air is heated up to 85°C through the heat exchanger, and then heated to 130°C through an air heater to enter the spray dryer. After the mixture is atomized into droplets, it is contacted with hot air in the downstream direction to finally obtain a granular industrial additive with a solid content of 98.3%, an active substance of 31%, a pH of 8.3, and a particle size ...

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Abstract

The invention relates to a production technology and a device for comprehensive recovery and utilization of alpha-alkenyl electrostatic acid, which aim at enabling electrostatic acid to be utilized effectively. According to the technical scheme, the production technology for comprehensive recovery and utilization of alpha-alkenyl electrostatic acid comprises the following steps: (1) mixing electrostatic acid and liquid caustic soda in a static mixer, neutralizing, releasing heat for heating, then cooling in a heat exchanger, and drying in a spray drier; (2) drying by making fog drops with micro grain sizes contact dry hot air; (3) filtering air streams from the spray dryer by a cyclone separator and a bag type deduster, and evacuating by a draught fan; and (4) finally collecting a granular industrial additive by the spray drier, the cyclone separator and the bag type deduster. The device for comprehensive recovery and utilization of alpha-alkenyl electrostatic acid comprises the static mixer, a counterbalance valve, the heat exchanger, an air heater, the spray drier, the cyclone separator, the bag type deduster and the draught fan.

Description

Technical field [0001] The present invention relates to a production process and device for comprehensive recycling and utilization of α-alkenyl sulfonate (hereinafter referred to as α-alkenyl) electrostatic acid, in particular to the production of AOS (α-alkenyl sulfonate) anionic surfactant sulfonation The production process and equipment for the comprehensive recycling and utilization of the by-product electrostatic acid. Background technique [0002] Sulfur trioxide sulfonation is the main process method for the production of anionic surfactants. AOS (α-alkenyl sulfonate) is an anionic surfactant with excellent performance, made from α-olefin by sulfur trioxide sulfonation, neutralization and hydrolysis. It has good surface activity, foaming and hard water resistance. It is widely used in detergents such as washing powder, detergent, bath lotion and shampoo. In the sulfonation process of AOS, its raw material α-olefin reacts with sulfur trioxide to form sultone intermediate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C303/32C23G1/14C04B24/16
Inventor 代永昌方灵丹任静史立文秦志荣
Owner ZANYU TECH GRP CO LTD
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