Drying method suitable for high-shrinkage polyester chips

A technology of shrinkage polyester and drying method, which is applied in the drying field of high-shrinkage polyester chips, and can solve problems such as inability to separate and isolate high-shrinkage polyester chips, deformation of stretching or shrinkage, and poor drying of high-shrinkage polyester chips. Achieve the effects of facilitating continuous drying, reducing softening deformation, and shortening the time of pre-crystallization

Pending Publication Date: 2021-11-30
冯越
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for polyester chips with high shrinkage, when using a device such as a fluidized bed to pre-crystallize the polyester chips, the hot air blown from bottom to top cannot effectively remove the high-shrinkage polyester chips that have been stuck together. Effective separation and isolation will easily cause stretching or shrinkage deformation of the high-shrinkage polyester chips after softening, resulting in poor drying of the high-shrinkage polyester chips in the later stage

Method used

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  • Drying method suitable for high-shrinkage polyester chips
  • Drying method suitable for high-shrinkage polyester chips
  • Drying method suitable for high-shrinkage polyester chips

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] see Figure 1-10 , a drying method suitable for high-shrinkage polyester chips, S1. transporting high-shrinkage polyester chips from a hopper to a conveying device in advance;

[0053] S2. The conveying device puts the high-shrinkage polyester chips into the fluidized bed for pre-crystallization treatment;

[0054] S3. At this time, the hot air blowing device 2 blows hot air into the fluidized bed, and makes the wind-moving isolation shaking ball 5 float in the fluidized bed, and acts on the high-shrinkage polyester chips together with the hot air;

[0055] S4. Intermittently increase the pressure of the hot air blowing device 2 into the fluidized bed, so that the shaker telescopic one-way tube 10 drives the same polarity vibrating bubble ball 11 to act on the telescopic protective foam 8, so that the telescopic protective foam 8 produces intermittent Shaking, bouncing high-shrinkage polyester chips;

[0056] S5. After the pre-crystallization treatment is completed, t...

Embodiment 2

[0061] see Figure 1-10 , where the same or corresponding components as those in Embodiment 1 use the corresponding reference numerals as in Embodiment 1, and for the sake of simplicity, only the differences from Embodiment 1 will be described below. The difference between this embodiment 2 and embodiment 1 is: please refer to Figure 2-5 , the fluidized bed includes a fluidized bed body 1, the lower end of the fluidized bed body 1 is fixedly installed with a hot air blowing device 2 connected with it, the fluidized bed body 1 is fixedly connected with a sliced ​​boiling net plate 3, and the sliced ​​boiling net plate 3 is fixed inside A plurality of isolated ventilating boxes 4 are connected, and a plurality of blasting flexible telescopic tubes 6 connected with the hot air blowing device 2 are fixedly connected in the isolated ventilating box 4, and the upper end of the blasting flexible telescopic tubes 6 extends to the outside of the isolated ventilating box 4 , see ima...

Embodiment 3

[0065] see Figure 1-10 , wherein the same or corresponding components as those in Embodiment 2 use the corresponding reference numerals as in Embodiment 2, and for the sake of simplicity, only the differences from Embodiment 2 are described below. The difference between this embodiment 3 and embodiment 2 is: please refer to Figure 9 The outer end of the telescopic protective bubble 8 is fixedly connected with a plurality of homopolar magnetic bubbles 9, the homopolar magnetic bubbles 9 are filled with a plurality of homopolar vibrating particles 901, and the homopolar vibrating bubble ball 11 is filled with homopolar vibrating particles 901. Coordinated homopolar tension magnetic material 1101. Due to the mutual cooperation of homopolar tension magnetic materials 1101 and homopolar vibrating particles 901, due to the principle of homopolar repulsion, when the homopolar vibration ball 11 is close to the homopolar magnetic bubble 9, the volume of the homopolar magnetic bubble...

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Abstract

The invention discloses a drying method suitable for high-shrinkage polyester chips, and belongs to the field of polyester chip preparation. The drying method suitable for the high-shrinkage polyester chips comprises the steps that the high-shrinkage polyester chips are conveyed to a conveying device from a hopper in advance; the high-shrinkage polyester chips are put into a boiling bed by the conveying device, and pre-crystallization treatment is carried out; through mutual cooperation of pneumatic isolation shaking balls and telescopic protective bubbles, the floating efficiency of the high-shrinkage polyester chips in the boiling bed can be effectively improved, the high-shrinkage polyester chips which are adhered together can be timely and effectively opened, the isolation effect is effectively improved, the softening deformation condition of the high-shrinkage polyester chips is reduced, and the drying quality is improved; and by adjusting the air pressure and controlling the shaking amplitude of the telescopic protective bubbles, the control difficulty is simplified while the effective isolation and separation effects are effectively achieved, continuous drying of the high-shrinkage polyester chips is facilitated, and the economic benefits of high-shrinkage polyester chip processing are improved.

Description

technical field [0001] The invention relates to the field of polyester chip preparation, in particular to a drying method suitable for high-shrinkage polyester chips. Background technique [0002] Polyester chips usually refer to the polyester raw materials obtained by polymerization, which are generally processed into flake particles of about 4×5×2 mm. The technological routes of polyester production include direct esterification and transesterification. The uses of polyester now include fibers, various containers, packaging materials, films, films, engineering plastics and other fields. When drying polyester chips, due to its low softening temperature, it is very easy to produce greater viscosity during drying, which makes polyester chips stick to each other, affecting the quality of chips and drying effect. The existing polyester chips drying method is to pre-crystallize the polyester chips through devices such as a fluidized bed, so as to reduce the probability of thei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B13/06B29K67/00
CPCB29B13/065B29K2067/00
Inventor 冯越
Owner 冯越
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