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A polyester-cotton blending and separation method technology, applied in separation methods, filtration separation, chemical instruments and methods, etc., can solve the problems of winding, stirring and discharging, difficulties, etc., and achieve high-efficiency polyester-cotton separation, reduce damage, and enhance mass transfer. Effect
Active Publication Date: 2017-11-03
温州天成纺织有限公司
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[0005] In order to solve many deficiencies of existing devices in the separation of components of waste polyester-cotton blended fabrics, the present invention provides a method for separating components of waste polyester-cotton blended fabri
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[0027] Such as figure 1 As shown, in a preferred embodiment of the present invention, the device includes a horizontal rotatable alcoholysis tank 1 , a reflux condensation device 2 , a collecting tank 3 , a vacuum device and a motor 5 .
[0028] The horizontal rotatable alcoholysis tank 1 is composed of an outer cylinder 110 and an inner cylinder 120 .
[0029] The outer cylinder 110 is cylindrical and fixed axially and horizontally on the bracket 4 . A cylinder cover 108 , a reflux condensing device interface 111 , a vent 116 , a feed inlet 117 , a pressure gauge interface 114 , a temperature sensor interface 105 and a liquid discharge outlet 113 are arranged on the outer cylinder body. A cylinder cover 108 is arranged on a bottom surface of the cylinder, and the cylinder cover 108 is connected with the outer cylinder 110 through a quick-opening bolt 101 , and a viewing window 1...
Embodiment 2
[0033] Example 2 Alcoholysis Separation of Waste Polyester-Cotton Textiles
[0034] 1. Raw materials:
[0035] Alcoholysis agent: ethylene glycol;
[0036] Catalyst: sodium carbonate;
[0037] Waste polyester-cotton blended fabric: polyester 87 / cotton 13 (only waste polyester-cotton tops with fusible interlining and metal attachments removed);
[0038] The weight ratio of the alcoholysis agent to the waste polyester-cotton blended fabric is 6:1;
[0039] The amount of catalyst added is 0.4‰ of the weight of waste polyester-cotton blended fabric.
[0040] 2. Use the device described in Example 1 to carry out alcoholysis separation, and the specific steps are as follows:
[0041]I. Put the waste polyester-cotton blended fabric into the inner cylinder, add the alcoholysis agent and catalyst into the outer cylinder through the feed port, and close the cylinder cover;
[0042] II. Turn on the motor and heating device, so that the inner cylinder rotates forward and reverse, and...
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Abstract
The invention discloses a waste cotton-polyester blended fabric component separation method, adopting a horizontal type rotation alcoholysis separation device. The device comprises an outer barrel with a heating device, and a rotatable inner barrel with a filter net; the outer barrel is connected with a reflux condensing device, a motor and a vacuum system. The method comprises the following steps: a waste cotton-polyester blended fabric is put into the inner barrel, and an alcoholysis agent, a catalyst and the like are added into the outer barrel; the material in the inner barrel and the alcoholysis agent make alcoholysis reaction in a rotation state; after alcoholysis is finished, the material is spin-dried in the inner barrel by centrifugation, and a liquid alcoholysate is discharged out along; after centrifugation is finished, a vacuum condensing system is started to distill off and recycle a small amount of the residual alcoholysis agent in the material in a negative pressure state, and then solid cotton yarn remained after alcoholysis separation is pushed out by a mechanical pushing rod. According to the method, stirring is not needed, so the problem of performance loss caused by twining and stirring of the remanent cotton yarn is solved; besides, the problems of the alcoholysis agent remained in the remanent cotton yarn, discharge difficulty and the like are solved, thus efficiently and conveniently separating and recycling waste cotton-polyester blended fabric components.
Description
technical field [0001] The invention relates to a method for separating components of polyester-cotton blended fabrics, in particular to a method for separating components of polyester-cotton blended fabrics in a horizontal centrifugal alcoholysis kettle. Background technique [0002] my country is a large textile country, with a stock of waste textiles of 26 million tons per year, including 18 million tons of chemical fibers (12 million tons of polyester), and 8 million tons of natural fibers. Polyester is divided into pure polyester, polyester cotton, polyester and other blends. , while the proportion of polyester-cotton in polyester is as high as about 70%, that is, the stock is as high as 8.4 million tons / year. However, due to the difficulty in recycling polyester-cotton blended fabrics, most of them have not been effectively recycled, resulting in a huge amount of waste textiles , not only pollute the environment, occupy a large amount of storage space, but also cause a g...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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