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Polylactic acid devolatilization device with built-in uniform distributor

A technology of a devolatilization device and a homogenizer, which is applied in the field of polylactic acid, and can solve problems such as the inability to shorten the diffusion distance of the liquid film, reduce the devolatilization efficiency, and high energy consumption

Inactive Publication Date: 2021-09-10
马鞍山同杰良生物材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the method of using screw extruder for devolatilization not only has high energy consumption, but also the polymer is subjected to high shear load in the screw extruder, which cannot shorten the diffusion distance of the liquid film and reduces the devolatilization efficiency

Method used

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  • Polylactic acid devolatilization device with built-in uniform distributor
  • Polylactic acid devolatilization device with built-in uniform distributor
  • Polylactic acid devolatilization device with built-in uniform distributor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] refer to Figure 1-6, a polylactic acid devolatilization device with a built-in uniform distributor, comprising a tank body 1, a support platform 2 and an upper end cover 3, the tank body 1 is arranged on the upper end of the support platform 2, the upper end cover 3 is arranged on the upper end of the tank body 1, and the upper end One side of the upper end of the cover 3 is connected with a volatile matter outlet 301, and the vapor phase volatile matter removed in each area of ​​the devolatilization device is collected at the volatile matter outlet 301 and discharged through the volatile matter outlet 301; the inner wall of the tank body 1 is provided with several A group of heating plates 104, the heating plate 104 is close to the feed distribution chamber 101, the heating plate 104 is electrically connected to the first heating assembly 105, and the heating plate 104 is heated by the first heating assembly 105, thereby heating the material and improving the removal r...

Embodiment 2

[0064] refer to figure 2 The difference between this embodiment and Embodiment 1 is that the inner wall of the rotating main shaft 10 is provided with a first heating wire 14, the inner wall of the L-shaped stirring shaft 13 is provided with a second heating wire 15, and the first heating wire 14 and the second heating wire 15 connection, one end of the first heating wire 14 is electrically connected to the second heating assembly 16, the second heating assembly 16 is installed on the end of the rotating spindle 10, the second heating assembly 16 is connected to the first heating wire 14 and the second heating wire 15 heating, so that the L-shaped stirring shaft 13 completes the stirring while heating the materials, and realizes the full mixing of the materials, accelerates the removal of volatile matter, and then improves the production and processing efficiency.

[0065] Refer to Example 1 for other undescribed structures.

[0066] Working principle: In the present inventi...

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Abstract

A polylactic acid devolatilization device with a built-in uniform distributor, disclosed in the invention, comprises a tank body, a supporting table and an upper end cover, the tank body is arranged at the upper end of the supporting table, the upper end cover is arranged at the upper end of the tank body, and one side of the upper end of the upper end cover is communicated with a volatile component outlet; a feeding distribution cavity, a conveying cavity and a heating devolatilization cavity are sequentially arranged in the tank body from top to bottom, and a uniform distributor is arranged in the feeding distribution cavity; a spiral feeding rod is vertically fixed at the bottom of the uniform distributor and is arranged in the conveying cavity; and a fixing rod is vertically arranged at the bottom of the spiral feeding rod and located in the heating devolatilization cavity. The device overcomes the defects in the prior art, is reasonable in design, facilitates formation of a liquid film, shortens the diffusion distance of volatile components, improves the devolatilization effect and efficiency, and has high social use value and application prospects.

Description

technical field [0001] The invention relates to the technical field of polylactic acid, in particular to a polylactic acid devolatilization device with a built-in uniform distributor. Background technique [0002] At present, the two major problems of environmental pollution and resource shortage have posed a major threat to human society. It is the general trend to develop renewable resources and biodegradable polymer materials to replace petroleum plastic products. Among them, the synthesis and application research of polylactic acid (PLA) is the most active. [0003] Polylactic acid is a chemically synthesized and fully biodegradable green polymer material. The development and utilization of polylactic acid can not only solve the problem of environmental pollution, but also open up inexhaustible raw material resources for the plastic industry mainly based on petroleum resources. . Therefore, the development of polylactic acid materials is of great significance both in t...

Claims

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Application Information

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IPC IPC(8): B01D1/00B01D1/30C08G63/90C08G63/08
CPCB01D1/00B01D1/30C08G63/90C08G63/08
Inventor 王秦峰陈瑞锋许克强任杰
Owner 马鞍山同杰良生物材料有限公司
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