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Dry spinning hot air circulation device

A technology of hot air circulation and dry spinning, which is applied in dry spinning, textile/flexible product manufacturing, and climate sustainability. Energy Saving Effect

Active Publication Date: 2005-03-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to further improve the recovery rate of the solvent, the present invention proposes a new dry spinning hot air circulation device, which aims to overcome the inability to improve the solvent evaporation efficiency of the tunnel used to evaporate and collect the solvent in the existing dry spinning The problem

Method used

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  • Dry spinning hot air circulation device

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Embodiment one, see figure 1 , the figure shows a dry spinning hot air circulation device, which includes a tunnel 4, a solvent recovery device 3, and a heat exchanger 5. The tunnel 4 is respectively provided with a hot gas inlet 1 and an outlet 2, and the inlet 1 is located at the bottom of the tunnel 4. Below, the outlet 2 is located above the shaft 4; a side blowing device 6 is provided between the upper end of the shaft 4 and the spinneret, and two opposite sides of the side blowing device 6 have an inlet 61 and an outlet 62. The outlet of the solvent recovery device 3 is connected to the tunnel gas inlet 1 and the inlet 61 of the side blowing device through the heat exchanger 5, and the inlet of the solvent recovery device 3 is connected to the tunnel gas outlet 2 and the outlet 62 of the side blowing device.

[0021] Wherein the solvent recovery device 3 belongs to the prior art, and the gas that comes out through the gas outlet 2 of the tunnel 4 and the outlet 6...

Embodiment 2

[0022] Embodiment two, see figure 2 , the figure shows a dry spinning hot air circulation device, including a tunnel 4, a solvent recovery device 3, and a heat exchanger 5. The tunnel 4 is respectively provided with a hot gas inlet 1 and an outlet 2, and the inlet 1 is located below the tunnel 4. , the outlet 2 is located above the shaft 4; at the outlet of the spinneret, the upper end of the shaft 4 is provided with a side blowing device 6, and the side blowing device 6 has an inlet 61 covering one side and an outlet 62 covering the other side and the outlet of the solvent recovery device 3 is connected to the tunnel gas inlet 1 through the heat exchanger 5, and the gas outlet 2 of the tunnel 4 is connected to the inlet 61 of the side blowing device; the inlet of the solvent recovery device 3 is connected to the outlet of the side blowing device 62 connected.

[0023] A heat exchanger 7 can be established between the entrance of the tunnel outlet 2 to the side blowing devic...

Embodiment 3

[0028] Embodiment three, see image 3 , the figure shows a dry spinning hot air circulation device, the difference from the previous embodiment is: the hot gas inlet 1 of the shaft 4 is located above the shaft 4, and the hot gas outlet 2 is located below the shaft 4. That is, the hot gas enters from the upper inlet 1 of the shaft 4, flows out from the outlet 2 below the shaft 4, and then is sent into the side blowing device 6. In this embodiment, the down-flow spinning and the side blowing device are combined in series Solvent evaporation and collection were performed.

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Abstract

A hot air circulating system for sufficiently evaporating solvent and recovering it in dry spinning procedure is composed of a channel, a solvent recovering unit, a heat exchanger between the exit of solvent recovering unit and gas inlet of channel, and a lateral hot air blower between channel and spinneret plate for increasing the solvent evaporating and recovering efficiency.

Description

technical field [0001] The invention relates to a dry spinning hot air circulation device, which is a device in which the solvent can be fully evaporated and recovered during the dry spinning process, and belongs to the field of dry spinning equipment. Background technique [0002] When the polymer has sufficient thermal stability within the boiling point range of its solvent, it is suitable for spinning. When dry spinning is used, the problem of solvent evaporation and recovery is involved. Firstly, the solvent carried by the filament bundle sprayed from the spinneret is evaporated and collected, and secondly, the evaporated solvent is sent to the recovery device for recovery. The evaporation of solvent and the improvement of collection rate are the basis for improving the efficiency of solvent recovery. [0003] The evaporation and collection of the solvent is carried out in the spinning shaft, mainly by passing hot inert gas into the spinning shaft to make the solvent fu...

Claims

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Application Information

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IPC IPC(8): D01D5/04
CPCY02P70/62
Inventor 林相来王颢张琦金小芳张彩霞李启明毕英华马彦孙玉山林华体
Owner CHINA PETROLEUM & CHEM CORP
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