Device and process for continuously separating and recycling waste polyester cotton textiles
A technology for separation and recovery of textiles, which is applied in the field of continuous separation and recovery of waste polyester-cotton textiles. It can solve the problems of continuous industrial production that cannot realize separation and recovery, and the inability to separate polyester and cotton components, and achieve continuous separation. , Guarantee the effect of clean production and high degree of engineering
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0063] Example 1
[0064] The polyester-cotton blended fabric containing 15% cotton yarn is broken into 4cm×4cm size, and then transported to the alcoholysis kettle, adding 6 times the weight of polyester-cotton fabric with ethylene glycol, and after alcoholysis at 240°C and 200kPa pressure for 5h, It is separated by a polyester-cotton separation system, and the obtained recycled cotton is collected and reused after washing and drying. The breaking strength of the recycled cotton yarn is 14.2 cN / tex and the breaking elongation is 15.5%. The separated polyester alcoholysis product enters the subsequent polymerization stage after fine filtration and concentration. The pre-condensation temperature is 278°C, the vacuum degree is 2kPa absolute pressure, the final polycondensation temperature is 285°C, and the vacuum degree is 120Pa absolute pressure. Recycled PET polyester with a viscosity of 0.67dl / g.
Example Embodiment
[0065] Example 2
[0066] The polyester-cotton blended fabric containing 20% cotton yarn is broken into 6cm×6cm size, and then transported to the alcoholysis kettle, adding 5 times the weight of the polyester-cotton fabric with ethylene glycol, and after alcoholysis at 245℃ and 300kPa pressure for 4h. It is separated by a polyester-cotton separation system, and the obtained recycled cotton is collected and reused after washing and drying. The breaking strength of the recycled cotton yarn is 15.2 cN / tex and the breaking elongation is 16.1%. The separated polyester alcoholysis product enters the subsequent polymerization stage after fine filtration and concentration. The pre-condensation temperature is 276°C, the vacuum degree is 1.8kPa absolute pressure, the final polycondensation temperature is 282°C, and the vacuum degree is 105Pa absolute. Recycled PET polyester with an intrinsic viscosity of 0.70dl / g.
Example Embodiment
[0067] Example 3
[0068] The polyester-cotton blended fabric containing 25% cotton yarn is crushed into 8cm×8cm size, and then transported to the alcoholysis kettle. 25 times the weight of the polyester-cotton fabric is added with ethylene glycol. After alcoholysis at 200°C and 50kPa pressure for 7 hours, It is separated by a polyester-cotton separation system, and the obtained recycled cotton is collected and reused after washing and drying. The breaking strength of the recycled cotton yarn is 15.7 cN / tex and the breaking elongation is 16.3%. The separated polyester alcoholysis product enters the subsequent polymerization stage after fine filtration and concentration. The pre-condensation temperature is 279°C, the vacuum degree is 2kPa absolute pressure, the final polycondensation temperature is 268°C, and the vacuum degree is 102Pa absolute pressure. Recycled PET polyester with a viscosity of 0.69dl / g.
PUM
Property | Measurement | Unit |
---|---|---|
Breaking strength | aaaaa | aaaaa |
Intrinsic viscosity | aaaaa | aaaaa |
Breaking strength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap