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Method for continuously drying sodium aliphatic alcohol sulfate and sodium olefin sulfonate slurry

A technology of sodium fatty alcohol sulfate and sodium alkenyl sulfonate, applied in the field of sodium alkenyl sulfonate, continuous drying of high-concentration sodium fatty alcohol sulfate, can solve the problems of continuous processing difficulty, large drying energy consumption, large equipment investment, etc. Achieve the effect of improving the fluidization effect, avoiding high temperature decomposition, and cleaning the cylinder wall

Inactive Publication Date: 2010-08-25
SINOLIGHT CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problems of high drying energy consumption, difficult continuous processing, large equipment investment and high production cost when dehydrating fatty alcohol sodium sulfate and alkenyl sodium sulfonate slurry to produce solid products. Therefore, a continuous drying method of the present invention is provided. The method of high-concentration fatty alcohol sodium sulfate and sodium alkenyl sulfonate slurry has simple and reasonable process flow, high energy efficiency ratio, low equipment cost, high reliability, and stable and continuous large-scale industrial production. This method uses low-temperature hot air Continuous drying of high-concentration fatty alcohol sodium sulfate and sodium alkenyl sulfonate slurry to produce corresponding fine powder products

Method used

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  • Method for continuously drying sodium aliphatic alcohol sulfate and sodium olefin sulfonate slurry
  • Method for continuously drying sodium aliphatic alcohol sulfate and sodium olefin sulfonate slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: the active matter content is 75% C 12-14 Preheat to 75°C after metering the sodium alkyl sulfate, and use the combination of screw pump 1 and reciprocating pump 3 to continuously send it into the inert particle fluidized bed dryer 5 in a pulsating manner, and the material passes through the multi-point distributed mesh distribution cover 6 in the dryer. After breaking into a short cylinder, the short cylindrical material entering the fluidized bed is then further dispersed by the inert particles in a fluidized state. The dispersed wet material and inert particles are in a fluidized state, and the wet material is entered by the bottom. The temperature is 100 ℃ hot air drying, the dried material becomes fine powder under the impact and friction of inert particles, the dried fine powder is taken out by the tail gas and enters the bag separator, and the tail gas is under the action of the induced draft fan 9 It is discharged from the upper part of the bag sepa...

Embodiment 2

[0034] Embodiment 2: the active matter content is 60% C 16-18 Preheat to 70°C after metering the sodium alkyl sulfate, and use the combination of screw pump 1 and reciprocating pump 3 to continuously send it into the inert particle fluidized bed dryer 5 in a pulsating manner, and the material passes through the multi-point distributed mesh distribution cover in the dryer After 6, it breaks into a short cylindrical shape, and the short cylindrical material entering the fluidized bed is then further dispersed by the inert particles in a fluidized state. The dispersed wet material and inert particles are in a fluidized state, and the wet material is absorbed by the bottom. The incoming temperature is dried by hot air at 90°C, and the dried material becomes a fine powder under the impact and friction of inert particles. The dried fine powder is then taken out by the tail gas and enters the bag separator. Next, it is discharged from the upper part of the bag separator, and the fine...

Embodiment 3

[0035] Embodiment 3: the active matter content is 70% C 14-18 Sodium alkenyl sulfonate is preheated to 150°C after metering, and is continuously fed into the inert particle fluidized bed dryer in a pulsating manner by a combination of a screw pump and a reciprocating pump. The material is broken into Short cylindrical shape, the short cylindrical material entering the fluidized bed is then further dispersed by inert particles in a fluidized state, the dispersed wet material and inert particles are in a fluidized state, and the temperature at which the wet material enters from the bottom is Dried by hot air at 180°C, the dried material becomes a fine powder under the action of collision and friction of inert particles, and the dried fine powder is taken out by the tail gas and enters the bag separator, and the tail gas is discharged from the bag separator under the action of the induced draft fan. The upper part is discharged, and the fine powder collected by the bag separator ...

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Abstract

The invention provides a method for continuously drying sodium aliphatic alcohol sulfate and sodium olefin sulfonate slurry with easy continuous processing and low cost. The method comprises the following steps of: inputting airflow at the temperature of between 70 and 180 DEG C into a fluidized bed dryer (5) to ensure that inert particles in the dryer are fluidized; preheating the measured sodium aliphatic alcohol sulfate and sodium olefin sulfonate slurry to the temperature of between 50 and 150 DEG C, and inputting the measured sodium aliphatic alcohol sulfate and sodium olefin sulfonate slurry into the fluidized bed dryer (5) in a pulsating flow mode; allowing the slurry to pass through a mesh distribution screen (6); rupturing the slurry into short columns; ,making the slurry fall into a fluidized bed layer of the dryer; fluidizing the slurry and the inertia particles, and drying the fluidized slurry and the inertia particles to obtain the material; separating the dried material from surfaces of the inert particles to form fine powder; discharging the fine powder from the top of the fluidized bed dryer along with air flow, and allowing the fine powder to enter a bag separator (7); and exhausting tail gas from the top of the bag separator, and outputting the product of fine powder from the lower part of the bag separator. The method is suitable for drying a surface active agent.

Description

technical field [0001] The invention relates to a material drying method, in particular to a method for continuously drying high-concentration fatty alcohol sodium sulfate and alkenyl sodium sulfonate. Background technique [0002] Sodium fatty alcohol sulfate and sodium alkenyl sulfonate are anionic surfactants with good decontamination, foaming and emulsifying capabilities, and are widely used in daily chemicals, industrial cleaning agents, foaming agents for building materials and other products. Fatty Alcohol Sodium Sulfate is made from fatty alcohol, after SO 3 Liquid products are obtained through chemical reactions such as sulfonation and NaOH neutralization; while sodium alkenyl sulfonate uses olefins as raw materials and undergoes SO 3 Chemical reactions such as sulfonation, NaOH neutralization, and hydrolysis produce liquid products. Liquid fatty alcohol sodium sulfate and alkenyl sodium sulfonate can be made into solid products by proper drying. Since the liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C303/44C07C303/32C07C303/24B01F17/02B01F17/38C07C305/02C07C309/02C09K23/02C09K23/38
Inventor 童年朱国平郭春伟沈金明詹建伟许福琪罗志昕
Owner SINOLIGHT CHEM
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