Lyocell fiber spinning solution waste recycling device and recycling method thereof

A spinning dope, recycling device technology, applied in rayon recycling, textiles and papermaking, fiber chemical characteristics, etc., can solve the problem that spinning dope waste cannot be recycled.

Active Publication Date: 2015-06-17
CHINESE TEXTILE ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for recycling Lyocell fiber spinning dope waste to solve the problem that spinning dope waste cannot be recycled in the prior art

Method used

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  • Lyocell fiber spinning solution waste recycling device and recycling method thereof
  • Lyocell fiber spinning solution waste recycling device and recycling method thereof
  • Lyocell fiber spinning solution waste recycling device and recycling method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The amount of waste generated is 150kg / h, and the discharge is 3h

[0043] For discharge, use the pressure in the spinning dope pipeline to install an extrusion device with a small hole array at the discharge port. The diameter of the extrusion hole is 6mm, the number of holes is 20, the center distance of the holes is 18mm, and the area of ​​the holes is 80cm 2 . The waste material is extruded into strips with a diameter of 8-10 mm through the device.

[0044] After cooling, the thin strips of waste material fall into the long water tank located under the extrusion device, adjust the circulating water flow to drive the waste material to the shredder inlet at the other end of the water tank, and the moving speed of the waste material in the water flow is 0.2m / s , the length of the tank is 2m.

[0045] Shredding, using a shredder to shred the strip waste into granules with a particle size of 8-15mm, the granules fall into the stainless steel mesh basket located below ...

Embodiment 2

[0048] The amount of waste generated is 2000kg / h, and the discharge is 3h

[0049] For discharge, use the pressure in the spinning dope pipeline to install an extrusion device with a small hole array at the discharge port. The diameter of the extrusion hole is 8mm, the number of holes is 133, the center distance of the holes is 24mm, and the area of ​​the holes is 820cm 2 . The waste material is extruded into strips with a diameter of 10-12 mm through the device.

[0050] After cooling, the strip-shaped waste material falls into the long water tank located under the extrusion device, and the circulating water flow is adjusted to drive the waste material to move to the shredder inlet at the other end of the water tank. The moving speed of the waste material in the water flow is 0.3m / s , the length of the tank is 4m.

[0051] Shredding, using a shredder to shred the strip waste into 10-20mm granules, the granules fall into the stainless steel mesh basket located under the dis...

Embodiment 3

[0054] The amount of waste generated is 5000kg / h, and the discharge is 3h

[0055] For discharge, use the pressure in the spinning dope pipeline to install an extrusion device with a small hole array at the discharge port. The diameter of the extrusion hole is 10mm, the number of holes is 206, the center distance of the holes is 40mm, and the area of ​​the holes is 3600cm 2 . The waste material is extruded into strips with a diameter of 12-16 mm through the device.

[0056] After cooling, the strip-shaped waste material falls into the long water tank located under the extrusion device, and the circulating water flow is adjusted so that it can drive the waste material to move to the shredder inlet at the other end of the water tank. The moving speed of the waste material in the water flow is 0.5m / s , the length of the tank is 5m.

[0057] Shredding, using a shredder to shred the strip waste into 12-30mm granules, the granules fall into the stainless steel mesh basket located...

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Abstract

The invention provides a lyocell fiber spinning solution waste recycling device and a recycling method thereof. The recycling device comprises a waste pipeline, a cooling device, a breaking device and a leaching device, wherein the waste pipeline is provided with a spinning solution waste inlet and a spinning solution waste outlet; the spinning solution waste inlet is connected to a spinning solution waste output device; the cooling device is provided with a cooling material inlet and a cooling material outlet; the cooling material inlet is communicated with the spinning solution waste outlet; the breaking device is provided with a breaking material inlet and a breaking material outlet; the breaking material inlet is communicated with the cooling material outlet; the leaching device is provided with a leaching material inlet, an NMMO leaching solvent inlet, a leaching liquid outlet and a leaching slag outlet; the leaching material inlet is communicated with the breaking material outlet; a plurality of extrusion holes are formed in the spinning solution waste outlet of the waste pipeline. By virtue of the application of the recycling device, the NMMO solvent in the lyocell fiber spinning solution waste is effectively recycled, so that the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the technical field of organic matter recovery, in particular to a recovery device and a recovery method for Lyocell fiber spinning dope waste. Background technique [0002] Lyocell fiber is a cellulose fiber that is wet-spun with N-methylmorpholine-N-oxide (NMMO) as a solvent. Its production process is to mix cellulose pulp in a certain proportion of NMMO / H 2 Dissolve in O solvent to obtain spinning dope. The spinning dope is heated up and pressurized, and then spun through the spinning hole to form it, and then the NMMO in the cellulose is dissolved and released in a water bath, and the cellulose is solidified to obtain the Lyocell precursor. Finally, the residual NMMO solvent in the raw silk is removed by washing with water, and the finished Lyocell fiber filament is obtained. During the entire production process, basically no chemical substances harmful to health or the environment are produced. [0003] However, NMMO is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F13/02
CPCD01F13/02Y02P70/62
Inventor 程鹏李克元蔡剑杨聪房凯
Owner CHINESE TEXTILE ACAD
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