Effect of fluid field on the eco-friendly utilization and recycling of CO2 and dyes in the waterless dyeing

被引:4
|
作者
Li, Shengnan [1 ]
Zheng, Huanda [1 ]
Su, Yaohua [1 ]
Zhao, Yuping [1 ]
He, Tingting [2 ]
Zheng, Laijiu [1 ]
机构
[1] Dalian Polytech Univ, Liaoning Prov Key Lab Supercrit CO2 Dyeing, Dalian 116034, Liaoning, Peoples R China
[2] Patent Examinat Cooperat Beijing, Ctr Patent Off, Beijing 100160, Peoples R China
基金
中国国家自然科学基金;
关键词
Supercritical waterless dyeing; Carbon dioxide utilization; Dye recycling; Fatigue life; SUPERCRITICAL CARBON-DIOXIDE; SEPARATION PERFORMANCE; CYCLONE; POLYESTER; PARTICLES; FLOW; GAS; DESIGN;
D O I
10.1016/j.jcou.2020.101311
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
During the supercritical waterless dyeing, ineffectual separation of dye powders from carbon dioxide often occurs with the gas random motion in the separator, which easily causes gas recontamination in the final separation and recycling period. In this work, a novel separator structure was designed, which greatly helps to enhance the separation efficiency. The flow field characteristics of carbon dioxide in the improved separator were investigated using numerical simulation. Numerical results showed that the regular rotating airflow, quasi-forced vortex and quasi-free vortex of carbon dioxide appear in the separator vessel. The total pressure loss at 200 L/h is 0.98 Pa, which is much smaller than the prototype separator. Furthermore, the enhanced separation efficiency of 9.96 %, 8.82 %, 13.24 % and 13.24 % is obtained for the dye particle sizes from 0.5 mu m to 2 mu m in the improved separator, which displays a better separation performance. The minimum cycle number which exists at the gas exit is 15654. Separation mechanism of carbon dioxide and dyes in the the supercritical dyeing was also proposed.
引用
收藏
页数:10
相关论文
共 50 条
  • [1] Eco-friendly Dyeing of Wool with a Mixture of Natural Dyes
    Kamel, M. M.
    Abdelghaffar, F.
    El-Zawahry, M. M.
    JOURNAL OF NATURAL FIBERS, 2011, 8 (04) : 289 - 307
  • [2] Exploring the requirements of reactive dyes in eco-friendly dyeing process: The relationship between dye structure, dyeing properties, and eco-friendly dyeing techniques
    Yang, Jingjing
    Wu, Cheng
    Fang, Huang
    Chen, Xin
    Lv, Jingchun
    DYES AND PIGMENTS, 2024, 223
  • [3] CO2 utilization for the waterless dyeing: Characterization and properties of Disperse Red 167 in supercritical fluid
    Zheng, Huanda
    Zhong, Yi
    Mao, Zhiping
    Zheng, Laijiu
    JOURNAL OF CO2 UTILIZATION, 2018, 24 : 266 - 273
  • [4] Investigation of Eco-friendly Dyeing of Para-aramid Using Supercritical CO2
    Yue Zhang
    Huanda Zheng
    Laijiu Zheng
    Tao Cai
    Fuer Zheng
    Fibers and Polymers, 2022, 23 : 2196 - 2205
  • [5] Investigation of Eco-friendly Dyeing of Para-aramid Using Supercritical CO2
    Zhang, Yue
    Zheng, Huanda
    Zheng, Laijiu
    Cai, Tao
    Zheng, Fuer
    FIBERS AND POLYMERS, 2022, 23 (08) : 2196 - 2205
  • [6] Synthesis and characterization of sustainable blue dyes: Enhancing diffusion on nylon fabrics with supercritical CO2 for eco-friendly dyeing methods
    Prabakaran, Kaliyan
    Manivannan, Ramalingam
    Son, Young-A.
    JOURNAL OF SUPERCRITICAL FLUIDS, 2024, 211
  • [7] Sustainable and eco-friendly strategies for polyester-cotton blends dyeing in supercritical CO2
    Zhou, Tianbo
    Wang, Yuxue
    Zheng, Huanda
    Du, Bing
    Zheng, Laijiu
    JOURNAL OF CO2 UTILIZATION, 2022, 55
  • [8] Eco-friendly approaches for dyeing multiple type of fabrics with cationic reactive dyes
    Xiao, Hang
    Zhao, Tao
    Li, Chun-Hong
    Li, Meng-Ying
    JOURNAL OF CLEANER PRODUCTION, 2017, 165 : 1499 - 1507
  • [9] An eco-friendly solution for construction and demolition waste: Recycled coarse aggregate with CO2 utilization
    Yuan, Qiang
    Zhang, Jiaoling
    Zhang, Suhui
    Zheng, Keren
    Chen, Lou
    SCIENCE OF THE TOTAL ENVIRONMENT, 2024, 950
  • [10] Sustainable extraction and utilization of chlorophyll from microalgae for eco-friendly wool dyeing
    Jorge, Alexandre M. S.
    Pedroso, Pedro R. M.
    Pereira, Jorge F. B.
    JOURNAL OF CLEANER PRODUCTION, 2024, 451