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Method for preparing powder material by polymer solvent removal

A technology of polymer powder and polymer, which is applied in the field of chemical production, can solve the problems of high production cost, large investment in equipment, high energy consumption, etc., and achieve the effects of quality improvement, wide range and strong adaptability

Inactive Publication Date: 2015-11-25
山东聚圣科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for polymer solvent removal to prepare powder, which can overcome the defects of high energy consumption, large equipment investment and high production cost in the prior art

Method used

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  • Method for preparing powder material by polymer solvent removal
  • Method for preparing powder material by polymer solvent removal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of method that is used for polymer solvent removal and prepares powder, its step is:

[0024] (1) First, send 5wt% SEBS polymer glue and superheated steam with a pressure of 1.0MPa and a temperature of 180°C into the drying tower through an injector for spray drying to obtain polymer powder. The temperature in the drying tower is controlled at 140-190°C ; The polymer glue is a mixture of SEBS and n-hexane solvent;

[0025] (2) Then send the polymer powder into the cyclone separator to remove the organic solvent and water vapor. The temperature in the cyclone separator is controlled at 135-185°C, and the feed rate of the cyclone separator is controlled at 5-8m / s;

[0026] (3) Then send the polymer powder into a fluidized bed dryer for drying; the temperature of the fluidized bed is controlled at 80°C, and the fluidization time is 30 minutes.

[0027] (4) Finally, the polymer powder is sent to the product silo and then sent to the packaging machine for packaging...

Embodiment 2

[0029] A kind of method that is used for polymer solvent removal and prepares powder, its step is:

[0030] (1) First, send 40wt% SEBS polymer glue and superheated steam with a pressure of 2.5MPa and a temperature of 230°C into the drying tower through an injector for spray drying to obtain polymer powder. The temperature in the drying tower is controlled at 140-190°C ; The polymer glue is a mixture of SEBS and n-hexane solvent;

[0031] (2) Then send the polymer powder into the cyclone separator to remove the organic solvent and water vapor. The temperature in the cyclone separator is controlled at 135-185°C, and the feeding speed of the cyclone separator is controlled at 5-8m / s;

[0032] (3) Then send the polymer powder into a fluidized bed dryer for drying; the temperature of the fluidized bed is controlled at 150°C, and the fluidization time is 15 minutes.

[0033] (4) Finally, the polymer powder is sent to the product silo and then sent to the packaging machine for pac...

Embodiment 3

[0035] A kind of method that is used for polymer solvent removal and prepares powder, its step is:

[0036] (1) Firstly, 25wt% SEBS polymer glue and superheated steam with a pressure of 1.3MPa and a temperature of 200°C are sent into the drying tower through an injector for spray drying to obtain polymer powder, and the temperature in the drying tower is controlled at 140-190°C ; The polymer glue is a mixture of SEBS and n-hexane solvent;

[0037] (2) Then send the polymer powder into the cyclone separator to remove the organic solvent and water vapor. The temperature in the cyclone separator is controlled at 135-185°C, and the feeding speed of the cyclone separator is controlled at 5-8m / s;

[0038] (3) Then send the polymer powder into a fluidized bed dryer for drying; the temperature of the fluidized bed is controlled at 120°C, and the fluidization time is 25 minutes.

[0039] (4) Finally, the polymer powder is sent to the product silo and then sent to the packaging machi...

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Abstract

The invention discloses a method for preparing a powder material by polymer solvent removal. The method comprises the following steps: carrying out spray drying on a polymer colloidal liquid by superheated steam, sending the polymer powder on the bottom of a drying tower into a cyclone separator to remove the solvent and steam, sending the powder into a fluidized-bed dryer to perform drying until the water content of the polymer powder material is 0.5 wt% or below, finally, sending the powder into a product storage bin, packaging in the packaging machine position, and warehousing. The method is simple in technique, and implements the solvent removal and the powder material drying and preparation. The water content of the finally obtained polymer powder is 0.5 wt% or below, the solvent content is less than 0.5 wt%, and the particle size range is 5-100 mu m. The method is suitable for producing multiple products, has the advantages of wide applicability and low energy consumption, further enhances the quality of the product, and has better comprehensive economic effects.

Description

technical field [0001] The invention relates to the technical field of chemical production, and more specifically, relates to a method for preparing powder materials by removing solvent from polymers. technical background [0002] As we all know, most of the SEBS and SEPS products sold in the market are in the form of powder, and the polymers sold in the form of powder are in line with the processing habits of end users. Therefore, in the post-treatment process of SEBS and SEPS products, it needs to be prepared in the form of powder. [0003] In the existing polymer powder preparation technology, steam stripping is often used in the solvent removal process of SEBS and SEPS, which consumes a lot of energy. For the post-processing process of preparing powder products, extrusion expanders, fourdrinier dryers, fluidized bed dryers, mills and other equipment are mostly used. These equipments are all from foreign manufacturers, which are expensive and difficult to maintain. In t...

Claims

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Application Information

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IPC IPC(8): C08F6/10C08F297/04C08F8/04
Inventor 崔志勇郭方飞闫邦锋郑学峰佀庆法
Owner 山东聚圣科技有限公司
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