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Fiber gas drying device and method

A technology of gas drying and fiber application in the direction of artificial filament cleaning/drying, which can solve the problems of increased energy consumption and environmental pollution

Active Publication Date: 2021-04-27
CHINESE TEXTILE ACAD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heating and drying often requires bulky equipment and a lot of heat, resulting in environmental pollution and increased energy consumption

Method used

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  • Fiber gas drying device and method
  • Fiber gas drying device and method
  • Fiber gas drying device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Ultra-high molecular weight polyethylene (viscosity average molecular weight: 4 million) is dispersed in decahydronaphthalene solvent (mass ratio of polyethylene to decahydronaphthalene: 10:90), swelled at 99°C for 2 hours and then heated to 160°C to dissolve to form a uniform spinning solution. After metering, it is extruded from the spinneret hole to form a fine spinning stream, which is cooled and solidified in a water bath at 10°C to obtain a solid jelly tow. The solid jelly tow passes through a 90°C air box, and a device with a diameter of 50mm gas cylinder, the gas cylinder is fed with 0.2MPa, 90°C nitrogen gas, the gas cylinder is equipped with a gas distribution pipe and a metal gas damping rod with a diameter of 7mm, and at the same time, the pulling ratio of the tow passing through the gas box is 1.01-1.8 times, Obtain dry raw silk. The dry raw silk is stretched after spinning to obtain polyethylene fibers with excellent fiber performance and a solvent content...

Embodiment 2

[0083] Ultra-high molecular weight polyethylene (viscosity average molecular weight: 4 million) is dispersed in decahydronaphthalene solvent (mass ratio of polyethylene to decahydronaphthalene: 10:90), swelled at 99°C for 2 hours and then heated to 160°C to dissolve to form a uniform spinning solution. After metering, it is extruded from the spinneret hole to form a fine spinning stream. The fine spinning stream is cooled and solidified by side blowing at 60°C to obtain solid jelly tows. The solid jelly tows pass through a 100°C air box, and a diameter It is a 50mm gas cylinder, which is fed with nitrogen gas at 0.2MPa and 90°C. The gas cylinder is equipped with a gas distribution pipe and a metal gas damping rod with a diameter of 7mm. At the same time, the pulling ratio of the tow through the gas box is guaranteed to be 1.01-1.8 times , to obtain dry raw silk. The dry raw silk is stretched after spinning to obtain polyethylene fibers with excellent fiber performance and a so...

Embodiment 3

[0085] Ultra-high molecular weight polyethylene (viscosity average molecular weight: 4 million) is dispersed in decahydronaphthalene solvent (mass ratio of polyethylene to decahydronaphthalene: 10:90), swelled at 99°C for 2 hours and then heated to 160°C to dissolve to form a uniform spinning solution. After metering, it is extruded from the spinneret hole to form a fine spinning stream, which is cooled and solidified by a 70°C ring blower to obtain a solid jelly tow. The solid jelly tow passes through a 110°C air box, and a diameter It is a 20mm gas cylinder, and the gas cylinder is fed with 0.6MPa, 110°C nitrogen gas. The gas cylinder is equipped with a gas distribution pipe and a glass gas damping rod with a diameter of 5mm. At the same time, the pulling ratio of the tow passing through the gas box is guaranteed to be 1.01-1.8 times , to obtain dry raw silk. After the dry raw silk is spun and thermally stretched, the dry polyethylene fiber is obtained, the fiber performance...

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Abstract

The invention provides a fiber gas drying device and method, and belongs to the technical field of textile machinery. The fiber gas drying device comprises a drying box, a plurality of air cylinders, an air source and an exhaust hole, and the multiple air cylinders are arranged on one side wall of the drying box, so that the multiple air cylinders are parallel to one another; a path of a to-be-dried fiber extends in the radial direction of the multiple air cylinders; the air source is blown to the to-be-dried fiber after passing through the air cylinders; and one end of the exhaust hole communicates with a containing space in the drying box, and the other end of the exhaust hole communicates with the outside. The fiber gas drying method comprises the following steps that a spinning solution is pressurized and subjected to pressure stabilizing to obtain a uniform spinning solution; the uniform spinning solution is extruded from spinneret orifices to form spinning trickles; the spinning trickles are cured and formed to obtain wet fibers; and after the wet fibers are dried by the device, dry tows are obtained. The fiber gas drying device and the method are environmentally friendly and low in energy consumption, and the residual quantity of an obtained fiber solvent is less than 100 ppm.

Description

technical field [0001] The invention relates to the technical field of textile machinery, in particular to a fiber gas drying device and a fiber gas drying method. Background technique [0002] In the process of fiber preparation, molding or dyeing, a large amount of liquids such as solvents or coagulation baths are often required, and these liquids need to be removed eventually to obtain dry finished fibers. In order to remove these liquids, the traditional process is realized by heating and drying. Heating and drying often requires bulky equipment and a lot of heat, resulting in environmental pollution and increased energy consumption. Therefore, there is a need for an environmentally friendly drying device with low energy consumption. Contents of the invention [0003] In view of this, the present invention provides a fiber gas drying device and a fiber gas drying method, which are environmentally friendly and have low energy consumption, so they are more suitable for...

Claims

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Application Information

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IPC IPC(8): D01D10/06
CPCD01D10/06
Inventor 李方全李鑫王万杰孙玉山孔令熙程金龙苏自强
Owner CHINESE TEXTILE ACAD