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Heat treatment equipment and method for increasing bulk density of polymer powder

A technology of heat treatment equipment and polymer powder, which is applied in the field of chemical equipment, can solve the problems of serious environmental pollution, easy to raise dust, and failure to achieve heat treatment, etc., and achieve the effects of increasing bulk density, reducing energy consumption, and solving difficulties in heat treatment

Active Publication Date: 2017-02-01
SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Since the equipment described in this patent document is only used for drying treatment of powder, it can make the material flow on the bottom air plate and play the role of drying granular powder, so the height of the box frame is low, and when When dealing with easily meltable polymer powder, if the temperature is too high, the easily meltable polymer powder will cause complete melting and sticking when it touches the high-temperature bottom air plate, and if the temperature is too low, it will cause th

Method used

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  • Heat treatment equipment and method for increasing bulk density of polymer powder
  • Heat treatment equipment and method for increasing bulk density of polymer powder
  • Heat treatment equipment and method for increasing bulk density of polymer powder

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Such as figure 1 Shown is a kind of heat treatment equipment that improves polymer powder bulk density, comprises feed port 1, fluidized bed 2, air channel 3, blower fan 5, heating device 6, temperature controller 7 and discharge device 8; The feed inlet 1 is set on the upper part of the air duct 3, the air outlet of the air duct 3 is set on the top of the air duct 3, the fluidized bed 2 is airtightly connected to the bottom of the air duct 3, and the discharge device 8 is airtightly connected to the fluidized bed 2 Below, the bottom of the feeding device 8 is provided with an air inlet, the air inlet is airtightly connected with the air outlet of the fan 5 through the temperature controller 7 and the heating device 6, and the air inlet of the fan 5 is airtightly connected with the air outlet of the air duct 3.

[0033] The heat treatment equipment also includes a cyclone separator 4 , the air outlet of the cyclone separator 4 is airtightly connected with the air inlet ...

Embodiment 2

[0036] A heat treatment device for increasing the bulk density of polymer powder, comprising a feed port 1, a fluidized bed 2, an air duct 3, a fan 5, a heating device 6, a temperature controller 7 and a discharge device 8; the feed port 1 is set on the upper part of the air duct 3, the air outlet of the air duct 3 is set on the top of the air duct 3, the fluidized bed 2 is airtightly connected to the bottom of the air duct 3, and the discharge device 8 is airtightly connected to the bottom of the fluidized bed 2, The bottom of the feeding device 8 is provided with an air inlet, and the air inlet is airtightly connected with the air outlet of the fan 5 through the temperature controller 7 and the heating device 6, and the air inlet of the fan 5 is airtightly connected with the air outlet of the air duct 3.

[0037] The air duct 3 is composed of a cylindrical cylinder and a truncated conical cylinder in an airtight connection, the lower edge of the upper cylindrical cylinder is ...

Embodiment 3

[0039] The melting point of a batch of high-density polyethylene (HDFE) measured by differential scanning calorimetry (DCS) is 134 °C, the particle size is between 10 and 100 μm, and the average particle size is 56 μm, of which the particle size between 30 and 80 μm accounts for 91%, using the heat treatment equipment described in Example 1 to increase the bulk density of polymer powder, set the hot air temperature to 130°C, turn on the fan to run for 1 hour to preheat, and after the temperature rises to the specified temperature, feed into the feeding port, After boiling for 20 minutes, the material was discharged, and the material index was obtained as shown in Table 1.

[0040]Simultaneously with the same conditions, adopt the heat treatment equipment described in embodiment 2 to improve the bulk density of polymer powder to process, the results are as shown in table 1.

[0041] Table 1. Processing results of HDPE equipment with different structures

[0042]

[0043] ...

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Abstract

The invention relates to thermal treatment equipment and method for improving the bulk density of polymer powder. The equipment comprises a feed port, a fluidized bed, an air flue, a fan, a heating device, a temperature controller and an emptying device, wherein the feed port is formed in the upper part of the air flue; an air outlet of the air flue is formed in the upper part of the air flue; the fluidized bed is connected to the bottom of the air flue in a sealing manner; the emptying device is connected to the lower part of the fluidized bed in the sealing manner; an air inlet is formed in the bottom of the emptying device; the air inlet is connected with an air outlet of the fan through the temperature controller and the heating device in the sealing manner; and an air inlet of the fan is connected with the air outlet of the air flue in the sealing manner. The invention also provides a method for improving the bulk density of the polymer powder by the equipment. The bulk density of material can be obviously improved, thus the mobility of the powder is improved.

Description

technical field [0001] The invention relates to heat treatment equipment and a method for increasing the bulk density of polymer powder, belonging to the technical field of chemical equipment. Background technique [0002] Regarding the heat treatment process of polymer powder, Chinese patent document CN1923488A (application number 200510044482.1) discloses a method for manufacturing polytetrafluoroethylene (PTFE) suspended resin pre-sintered material. One piece, and then pulverized to obtain powder with higher bulk density and better fluidity. Since PTFE is not easy to melt, it can be processed by this sintering process. [0003] But for polymer powders that are easy to melt, such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), perfluoroethylene propylene (FEP), modified polytetrafluoroethylene Ethylene (PFA), soluble fluorocarbon coating (FEVE), ethylene-tetrafluoroethylene copolymer (ETFE), ethylene-chlorotrifluoroethylene copolymer...

Claims

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Application Information

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IPC IPC(8): B29B13/02
Inventor 王汉利李星张永明张恒陈庆芬牛忠陈庆烨
Owner SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
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