涤纶筒纱超临界二氧化碳流体染色工程化装备与工艺

Engineering plant and process for dyeing of polyester bobbins in supercritical CO_2 fluid

针对传统水介质染色过程水耗、能耗、污水排放量大的难题,采用具有自主知识产权的1 000 L复式超临界CO_2流体染色装备系统对涤纶筒纱进行无水染色工程化生产。基于研发的复式超临界CO_2流体无水染色装备,系统介绍了其超临界流体染色工艺过程;同时,利用独特设计的筒纱染色釜,进行了涤纶筒纱超临界CO_2流体无水染色工艺研究。结果表明:利用研发的1 000 L复式超临界CO_2流体无水染色装备,可获得较高染色深度的筒纱,且染色产品具有良好的匀染性;此外,染色涤纶筒纱的耐水洗、耐摩擦色牢度可达到4~5级以上,耐日晒色牢度可达到6级以上,满足了工程化生产的需要。

In order to solve problems of large water consumption,power consumption and wastewater emissions in conventional aqueous dyeing process,anhydrous dyeing engineering production of polyester bobbins was conducted by employing a 1 000 L multiple supercritical CO_2 fluid dyeing system with independent intellectual property.Based on the developed multiple supercritical CO_2 fluid dyeing plant,a dyeing process in supercritical fluid was introduced systematically.Furthermore,the anhydrous dyeing process for polyester bobbins was carried out in supercritical CO_2 fluid using a uniquely designed bobbin dyeing kettle.The result show that the dyed polyester bobbins with high color depth and good levelness are obtained by employing the 1 000 L multiple supercritical CO_2 fluid dyeing plant.In addition,washing colorfastness,the rubbing colorfastness and light colorfastness of the dyed bobbins are rated more than 4-5,4-5 and 6,respectively.