CN102230233A - One-step Direct Spinning Technology of Polyester Industrial Yarn - Google Patents
One-step Direct Spinning Technology of Polyester Industrial Yarn Download PDFInfo
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- CN102230233A CN102230233A CN2011101599098A CN201110159909A CN102230233A CN 102230233 A CN102230233 A CN 102230233A CN 2011101599098 A CN2011101599098 A CN 2011101599098A CN 201110159909 A CN201110159909 A CN 201110159909A CN 102230233 A CN102230233 A CN 102230233A
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- 229920000728 polyester Polymers 0.000 title claims abstract description 33
- 238000010036 direct spinning Methods 0.000 title claims abstract description 13
- 238000005516 engineering process Methods 0.000 title claims 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000002425 crystallisation Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 33
- 230000008025 crystallization Effects 0.000 claims abstract description 32
- 238000009987 spinning Methods 0.000 claims abstract description 32
- 239000007790 solid phase Substances 0.000 claims abstract description 25
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 24
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000007664 blowing Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000005977 Ethylene Substances 0.000 claims 2
- -1 ethylene diester Chemical class 0.000 claims 2
- 239000007789 gas Substances 0.000 claims 2
- 241000108463 Hygrophila <snail> Species 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 230000004927 fusion Effects 0.000 claims 1
- 238000002156 mixing Methods 0.000 claims 1
- 238000007493 shaping process Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 238000003756 stirring Methods 0.000 abstract description 8
- 239000000835 fiber Substances 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000011161 development Methods 0.000 description 7
- SENMPMXZMGNQAG-UHFFFAOYSA-N 3,4-dihydro-2,5-benzodioxocine-1,6-dione Chemical compound O=C1OCCOC(=O)C2=CC=CC=C12 SENMPMXZMGNQAG-UHFFFAOYSA-N 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 239000004753 textile Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
技术领域 technical field
本发明涉及涤纶工业丝的纺织工艺,具体讲是涉及一种涤纶工业丝的一步法直接纺工艺,其属于纺织领域。 The invention relates to a textile process of polyester industrial yarn, in particular to a one-step direct spinning process of polyester industrial yarn, which belongs to the textile field.
背景技术 Background technique
自上个世纪六十年代美国将聚酯纤维成功应用于帘子线以来,经过四十多年的研究开发,涤纶工业丝的应用领域不断拓展。我国于1979年开始进行两步法涤纶工业丝生产工艺试验。20世纪80年代后期,从国外引进纺牵联合一步法涤纶工业丝生产线。据中国化纤工业协会统计,到2007年,我国涤纶工业长丝生产企业超过46家,总产能达46.78万吨,其中超过17家企业的设备是进口的,仅行业前10名企业合计产能为30.46万吨,约占总产能的65%以上。 Since the United States successfully applied polyester fibers to cords in the 1960s, after more than 40 years of research and development, the application fields of polyester industrial yarns have continued to expand. In 1979, my country began to conduct a two-step polyester industrial yarn production process test. In the late 1980s, the spinning and pulling combined one-step polyester industrial yarn production line was introduced from abroad. According to the statistics of China Chemical Fiber Industry Association, by 2007, there were more than 46 polyester industrial filament production enterprises in my country, with a total production capacity of 467,800 tons, of which more than 17 enterprises imported equipment, and only the top 10 enterprises in the industry had a total production capacity of 30.46. 10,000 tons, accounting for more than 65% of the total production capacity.
2007年世界涤纶工业长丝的总产能约为180万吨,中国的涤纶工业长丝已经占世界总产能的32%份额而位于榜首。我们不仅是生产大国,也是消费大国。尤其是近几年来,随着我国汽车业、交通运输业、公路、矿山业等快速发展,涤纶工业丝需求量以每年以近10%的速度增长。据海关统计,我国涤纶工业丝2008年1-2月份进口数量为 0.59万吨,进口单价2270.07美元/吨;2008年1-2涤纶工业丝进口单价是一般涤纶长丝进口单价的1.12倍。 In 2007, the total production capacity of the world's polyester industrial filament was about 1.8 million tons, and China's polyester industrial filament already accounted for 32% of the world's total production capacity and ranked first. We are not only a big producer, but also a big consumer. Especially in recent years, with the rapid development of my country's automobile industry, transportation industry, highway, mining industry, etc., the demand for polyester industrial yarn has grown at a rate of nearly 10% every year. According to customs statistics, the import volume of polyester industrial yarn in my country from January to February 2008 was 5,900 tons, and the import unit price was 2270.07 US dollars per ton; the import unit price of 1-2 polyester industrial yarn in 2008 was 1.12 times the import unit price of general polyester filament.
随着经济的持续增长,中国现已成为亚洲乃至全球经济发展前景最被看好的国家之一。特别是近年来汽车工业的高速发展,中国国内涤纶工业丝的市场需求量一直居高不下,必将拉动我国涤纶工业长丝行业进入了快速发展期,市场空间极大。中国毫无疑问地成为世界涤纶工业长丝的生产中心。 With the continuous economic growth, China has become one of the countries with the most promising economic development prospects in Asia and even in the world. Especially with the rapid development of the automobile industry in recent years, the market demand for polyester industrial yarn in China has remained high, which will surely drive my country's polyester industrial filament industry into a period of rapid development, and the market space is huge. China has undoubtedly become the production center of polyester industrial filament in the world.
目前涤纶工业是用的纺织工艺普遍为:直接纺一步法,直接纺二步法,切片纺一步法和切片纺二步法。广泛使用的方法为切片纺一步法,其生产灵活,改变品种方便,管理容易,产品质量好,但是其投资高,不适用广泛推广。 At present, the textile processes used in the polyester industry are generally: direct spinning one-step method, direct spinning two-step method, chip spinning one-step method and chip spinning two-step method. The widely used method is the one-step method of slice spinning, which is flexible in production, convenient in changing varieties, easy in management, and good in product quality, but its investment is high and it is not suitable for widespread promotion.
发明内容 Contents of the invention
针对上述技术问题,本发明的目的是提供一种涤纶工业丝的一步法直接纺工艺,填补了我国国内市场的空白。 In view of the above technical problems, the purpose of the present invention is to provide a one-step direct spinning process of polyester industrial yarn, which fills the gap in the domestic market of our country.
本发明涤纶工业丝的一步法直接纺工艺,其采用苯二甲酸乙二酯连续固相聚合与纺丝牵伸一步法相配合的方法;所述苯二甲酸乙二酯采用连续固相聚合,其过程为:常规 PET切片经过振动筛选料进入湿切片大料仓,湿切片大料仓中的PET切片经过输送进入60米高处的湿切片小料仓,小料仓中的PET切片经过第一回转阀控制连续地进入预结晶器中进行预结晶;预结晶的PET切片经过搅拌结晶器的料位计控制连续地进入搅拌结晶器中进行结晶;结晶完成后的PET切片经过第二、第三回转阀进入预加热器,PET切片在预加热器中加热,加热后连续进入固相聚合塔中进行固相聚合;聚合后的PET切片通过气流输送到成品料仓中;成品料仓中的增粘切片经气流输送到纺前料仓,再通过自重进入螺杆挤出机中,切片在螺杆挤出机中经熔融、挤压、混炼、均化后自机头挤出,经熔体管道分别进入两个纺丝箱体体;每台纺丝箱体设有两个纺丝位,每位6个纺丝组件,生产6束丝;熔体经纺丝计量泵准确计量后,通过纺丝组件自喷丝板喷出,再经过侧吹风装置冷却固化后,经两道上油、两道预网络、三道牵伸及主网络喷嘴后卷绕成形。 The one-step direct spinning process of polyester industrial yarn of the present invention adopts a method in which continuous solid-phase polymerization of ethylene phthalate is combined with one-step spinning and drawing; the ethylene phthalate adopts continuous solid-phase polymerization, and The process is: conventional PET slices are vibrated and screened into the large silo for wet slicing, the PET slices in the large silo for wet slicing are transported into the small silo for wet slicing at a height of 60 meters, and the PET slices in the small silo pass through the first Rotary valve control continuously enters the pre-crystallizer for pre-crystallization; the pre-crystallized PET slices are controlled by the level gauge of the stirring crystallizer and continuously enters the stirring crystallizer for crystallization; after crystallization, the PET slices pass through the second and third The rotary valve enters the pre-heater, and the PET slices are heated in the pre-heater. After heating, they enter the solid-phase polymerization tower continuously for solid-phase polymerization; the polymerized PET slices are transported to the finished product silo by airflow; The sticky slices are transported to the pre-spinning silo by air flow, and then enter the screw extruder by their own weight. The slices are melted, extruded, mixed, and homogenized in the screw extruder, and then extruded from the machine head, and passed through the melt pipeline. Enter into two spinning boxes respectively; each spinning box is equipped with two spinning positions, each with 6 spinning components, and produces 6 bundles of filaments; after the melt is accurately measured by the spinning metering pump, it is passed through the spinning The filament assembly is ejected from the spinneret, cooled and solidified by the side blowing device, and then wound into shape after two oiling, two pre-netting, three drafting and main netting nozzles.
所述第三回转阀转速:1~30rpm,将结晶和干燥过程中的空气系统与氮气系统隔离。预结晶热风温度为170℃,预结晶时间为15-30min,结晶热风温度为170℃,结晶热风流量为2800 Nm3/h;所述预热塔氮气进气温度200℃,预热塔氮气进气流量3200 Nm3/h,固相聚合塔氮气进气温度为200℃,氮气进气流3300 Nm3/h。 The speed of the third rotary valve: 1-30rpm, isolating the air system and the nitrogen system during the crystallization and drying process. The pre-crystallization hot air temperature is 170°C, the pre-crystallization time is 15-30min, the crystallization hot air temperature is 170°C, and the crystallization hot air flow is 2800 Nm3/h; the nitrogen inlet temperature of the preheating tower is 200°C, and the nitrogen inlet of the preheating tower The flow rate is 3200 Nm3/h, the nitrogen inlet temperature of the solid phase polymerization tower is 200°C, and the nitrogen inlet flow is 3300 Nm3/h.
所述预结晶及结晶都是在空气介质中完成。 Both the pre-crystallization and crystallization are completed in air medium.
所述第二回转阀用来控制下料速度,第三回转阀用来将空气系统与氮气系统隔离。 The second rotary valve is used to control the feeding speed, and the third rotary valve is used to isolate the air system from the nitrogen system.
所述预加热到固相聚合的过程在氮气介质中完成。 The process from preheating to solid phase polymerization is completed in a nitrogen medium.
本发明填补国产化连续固相聚合、纺丝、牵伸一步法工艺路线生产产业用聚酯纤维的空白,并采用流化床式预结晶器和搅拌式结晶器,增加第二回转阀用来控制下料速度,第三回转阀用来将空气系统与氮气系统隔离,利用位差将物料连续加入到预结晶器中,切片在连续式流化床预结晶器中进行结晶,结晶到设定结晶度的切片利用位差连续加入到搅拌式结晶器中进行进一步结晶,PET切片在预加热器中被加热到固相聚合要求的温度后连续进入固相聚合塔中进行固相聚合,预加热到固相聚合及干燥工艺均在氮气介质中完成。其产量高、工艺简单、生产易于控制,并且设备的高效能,柔性化,提高了差别化纤维品种的开发与生产,缓解我国产业用聚酯纤维供应不足的局面,大大促进我国化纤产业结构的调整,并使我国涤纶工业丝的装备与技术水平达到了国际先进。不但为国家节省了大量的外汇支出,而且促进了我国涤纶工业丝工业的快速发展。 The invention fills up the gap in the production of industrial polyester fibers by the one-step process route of domestic continuous solid-phase polymerization, spinning and drawing, and adopts a fluidized bed pre-crystallizer and a stirring crystallizer, adding a second rotary valve for Control the feeding speed. The third rotary valve is used to isolate the air system from the nitrogen system. The material is continuously added to the pre-crystallizer by using the potential difference. The slices are crystallized in the continuous fluidized bed pre-crystallizer, and the crystallization reaches the set The slices of crystallinity are continuously added to the stirring crystallizer by using the potential difference for further crystallization. The PET slices are heated to the temperature required for solid-phase polymerization in the pre-heater and then continuously enter the solid-phase polymerization tower for solid-phase polymerization. Preheating The solid phase polymerization and drying processes are all completed in a nitrogen medium. Its high output, simple process, easy production control, and high efficiency and flexibility of equipment have improved the development and production of differentiated fiber varieties, alleviated the shortage of industrial polyester fiber supply in my country, and greatly promoted the development of my country's chemical fiber industrial structure. Adjustment, and make my country's polyester industrial yarn equipment and technical level reach the international advanced level. It not only saves a lot of foreign exchange expenditure for the country, but also promotes the rapid development of my country's polyester industrial yarn industry.
具体实施方式 Detailed ways
涤纶工业丝的一步法直接纺工艺,其采用苯二甲酸乙二酯连续固相聚合与纺丝牵伸一步法相配合的方法;所述苯二甲酸乙二酯采用连续固相聚合,其过程为:常规 PET切片经过振动筛选料进入湿切片大料仓,湿切片大料仓中的PET切片经过输送进入60米高处的湿切片小料仓,小料仓中的PET切片经过第一回转阀控制连续地进入预结晶器中进行预结晶;预结晶的PET切片经过搅拌结晶器的料位计控制连续地进入搅拌结晶器中进行结晶;结晶完成后的PET切片经过第二、第三回转阀进入预加热器,PET切片在预加热器中加热,加热后连续进入固相聚合塔中进行固相聚合;聚合后的PET切片通过气流输送到成品料仓中;成品料仓中的增粘切片经气流输送到纺前料仓,再通过自重进入螺杆挤出机中,切片在螺杆挤出机中经熔融、挤压、混炼、均化后自机头挤出,经熔体管道分别进入两个纺丝箱体体;每台纺丝箱体设有两个纺丝位,每位6个纺丝组件,生产6束丝;熔体经纺丝计量泵准确计量后,通过纺丝组件自喷丝板喷出,再经过侧吹风装置冷却固化后,经两道上油、两道预网络、三道牵伸及主网络喷嘴后卷绕成形。所述第三回转阀转速:1~30rpm,将结晶和干燥过程中的空气系统与氮气系统隔离。预结晶热风温度为170℃,预结晶时间为15-30min,结晶热风温度为170℃,结晶热风流量为2800 Nm3/h;所述预热塔氮气进气温度200℃,预热塔氮气进气流量3200 Nm3/h,固相聚合塔氮气进气温度为200℃,氮气进气流3300 Nm3/h。所述预结晶及结晶都是在空气介质中完成。所述第二回转阀用来控制下料速度,第三回转阀用来将空气系统与氮气系统隔离。 One-step direct spinning process of polyester industrial yarn, which adopts continuous solid-phase polymerization of ethylene phthalate and one-step method of spinning and drawing; said ethylene phthalate adopts continuous solid-phase polymerization, and the process is : Conventional PET slices are vibrated and screened into the large silo for wet slicing, and the PET slices in the large silo for wet slicing are transported into the small silo for wet slicing at a height of 60 meters, and the PET chips in the small silo pass through the first rotary valve The control continuously enters the pre-crystallizer for pre-crystallization; the pre-crystallized PET slices are controlled by the level gauge of the stirring crystallizer and continuously enters the stirring crystallizer for crystallization; the crystallized PET slices pass through the second and third rotary valves Entering the pre-heater, the PET slices are heated in the pre-heater, and then enter the solid-phase polymerization tower continuously for solid-phase polymerization after heating; the polymerized PET slices are transported to the finished product silo by airflow; the thickened slices in the finished silo It is transported to the pre-spinning silo by air flow, and then enters the screw extruder by its own weight. After being melted, extruded, kneaded and homogenized in the screw extruder, the chips are extruded from the machine head, and then enter through the melt pipe respectively. Two spinning boxes; each spinning box is equipped with two spinning positions, each with 6 spinning components, producing 6 bundles of filaments; after the melt is accurately measured by the spinning metering pump, it passes through the spinning components Sprayed from the spinneret, cooled and solidified by the side blowing device, after two oiling, two pre-internetting, three drafting and main network nozzles, it is wound into shape. The speed of the third rotary valve: 1-30rpm, isolating the air system and the nitrogen system during the crystallization and drying process. The pre-crystallization hot air temperature is 170°C, the pre-crystallization time is 15-30min, the crystallization hot air temperature is 170°C, and the crystallization hot air flow is 2800 Nm3/h; the nitrogen inlet temperature of the preheating tower is 200°C, and the nitrogen inlet of the preheating tower The flow rate is 3200 Nm3/h, the nitrogen inlet temperature of the solid phase polymerization tower is 200°C, and the nitrogen inlet flow is 3300 Nm3/h. Both the pre-crystallization and crystallization are completed in air medium. The second rotary valve is used to control the feeding speed, and the third rotary valve is used to isolate the air system from the nitrogen system.
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103526317A (en) * | 2013-10-30 | 2014-01-22 | 苏州龙杰特种纤维股份有限公司 | High strength industrial female yarn production method |
CN103789851A (en) * | 2014-02-12 | 2014-05-14 | 苏州龙杰特种纤维股份有限公司 | Technology for producing polyester staple fibers |
CN103789852A (en) * | 2014-02-12 | 2014-05-14 | 苏州龙杰特种纤维股份有限公司 | Efficient production method for Dacron spun yarns |
CN104963009A (en) * | 2015-06-02 | 2015-10-07 | 无锡索力得科技发展有限公司 | Production method for colored PET industrial filaments |
CN106480514A (en) * | 2014-08-26 | 2017-03-08 | 诸暨市新丝维纤维有限公司 | A kind of low energy consumption fiber product preparation method |
CN106757402A (en) * | 2016-12-09 | 2017-05-31 | 江苏柯能新材料有限公司 | A kind of preparation technology of new polyester industrial yarn |
CN111020732A (en) * | 2019-12-11 | 2020-04-17 | 诸暨市百乐化纤有限公司 | Efficient polyester POY production equipment and process |
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2011
- 2011-06-15 CN CN2011101599098A patent/CN102230233A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103526317A (en) * | 2013-10-30 | 2014-01-22 | 苏州龙杰特种纤维股份有限公司 | High strength industrial female yarn production method |
CN103789851A (en) * | 2014-02-12 | 2014-05-14 | 苏州龙杰特种纤维股份有限公司 | Technology for producing polyester staple fibers |
CN103789852A (en) * | 2014-02-12 | 2014-05-14 | 苏州龙杰特种纤维股份有限公司 | Efficient production method for Dacron spun yarns |
CN106480514A (en) * | 2014-08-26 | 2017-03-08 | 诸暨市新丝维纤维有限公司 | A kind of low energy consumption fiber product preparation method |
CN106480514B (en) * | 2014-08-26 | 2018-07-20 | 诸暨市新丝维纤维有限公司 | A kind of low energy consumption fiber product preparation method |
CN104963009A (en) * | 2015-06-02 | 2015-10-07 | 无锡索力得科技发展有限公司 | Production method for colored PET industrial filaments |
CN106757402A (en) * | 2016-12-09 | 2017-05-31 | 江苏柯能新材料有限公司 | A kind of preparation technology of new polyester industrial yarn |
CN111020732A (en) * | 2019-12-11 | 2020-04-17 | 诸暨市百乐化纤有限公司 | Efficient polyester POY production equipment and process |
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Application publication date: 20111102 |