熔体直纺半消光/大有光涤纶POY的转产工艺优化  

Optimization of melt-spun semi-dull/bright polyester POY production conversion process

作　　者：陈士良 邱中南 王春燕 陆建伟 CHEN Shiliang;QIU Zhongnan;WANG Chunyan;LU Jianwei(Tongkun Group Co.,Ltd.,Tongxiang 314500;Tongkun Group Zhejiang Hengtong Chemical Fiber Co.,Ltd.,Tongxiang 314500;Zhejiang Tongkun Hengtong New Fiber Research Institute,Tongxiang 314500)

机构地区：[1]桐昆集团股份有限公司,浙江桐乡314500 [2]桐昆集团浙江恒通化纤有限公司,浙江桐乡314500 [3]浙江省桐昆恒通新纤维研究院,浙江桐乡314500

出　　处：《合成纤维工业》2022年第2期84-87,共4页China Synthetic Fiber Industry

摘　　要：在现有400 kt/a聚酯装置的基础上,对2条半消光涤纶预取向丝(POY)生产线进行技术改造,转产大有光涤纶POY。结果表明:通过在装置大有光涤纶POY生产线预留一个管道开口,加装输送管道连接2条半消光涤纶POY生产线,在接口处加装三通阀,同时优化转产工艺参数,转产大有光涤纶POY,产品质量稳定,达到AA级标准;以转产133 dtex/144 f“一”字形扁平大有光涤纶POY产品为例,在生产半消光涤纶POY生产工艺基础上,调整纺丝箱体温度为296℃、环吹风温度为21℃、集束位置为850 mm、预网络气压为0.85 MPa、底层卷绕角为5.5°~5.6°,转产的大有光涤纶POY断裂强度为2.53 cN/dtex,断裂伸长率为129.8%,条干不匀率为1.04%,含油率为0.35%。Two semi-dull polyester pre-oriented yarn(POY)production lines were technically transformed to produce bright polyester POY on the existing 400 kt/a polyester plant.The results showed that the bright polyester POY can be produced with stable quality reaching AA standard by optimizing process conversion parameters,reserving a pipeline opening in the bright polyester POY production line,adding a delivery pipeline to connect two semi-dull polyester POY production lines,and installing a three-way valve on the joint;the obtained bright polyester POY had the breaking strength of 2.53 cN/dtex,elongation at break 129.8%,yarn unevenness 1.04%and oil content 0.35%when the process conditions of semi-dull polyester POY were adjusted for producing 133 dtex/144 f I-shaped flat bright polyester POY as followed:spinning box temperature 296℃,circular air blow temperature 21℃,collection position 850 mm,pre-network air pressure 0.85 MPa,bottom winding angle 5.5°-5.6°.

关 键 词：聚对苯二甲酸乙二酯纤维 预取向丝 直接纺丝 半消光 大有光 转产工艺 

分 类 号：TQ342[化学工程—化纤工业]