CN110576530A - preparation process of regenerated polyester granules with clothing waste fibers as main raw materials - Google Patents

Abstract

a preparation process of regenerated polyester granules taking clothing waste fibers as main raw materials comprises the following process flows of material selection, sorting, melting, granulation, cooling and packaging: the material selection is to collect the waste materials of terylene in clothing factories, textile factories, bleaching and dyeing factories and chemical fiber factories; sorting, namely, storing the collected terylene waste materials in a classified color and removing the waste materials containing blended cotton, pulp or glue, and performing color sorting on the waste materials with mixed colors; in the melting step, the sorted waste materials are put into a melting granulator for friction heating dissolution, and the temperature is controlled to be 250-255 ℃; granulating, namely dissolving the waste materials into turbulent rubber materials in a melting process, adding water, and rapidly cooling to ensure that the rubber materials form particles in the process of solidifying into solids; cooling and packaging: after the sizing material forms particles, the discharge port is opened to discharge the particles, then the air is blown to carry out rapid heat dissipation and cooling, and the particles can enter a recycling link of chemical fiber production raw materials in a chemical fiber factory after being packaged at normal temperature.

Description

preparation process of regenerated polyester granules with clothing waste fibers as main raw materials

Technical Field

The invention relates to a preparation process of regenerated polyester, in particular to a preparation process of regenerated polyester granules by taking waste clothing fibers as a main raw material, and belongs to the technical field of resource regeneration.

Background

with the continuous improvement of chemical fiber and the continuous updating of varieties, the application of chemical fiber fabrics in the field of clothing is more and more complicated. After the chemical fiber cloth is cut into clothing accessories, a large amount of leftover materials are generated, the leftover materials are traditionally used as waste industrial waste materials and are treated in ways of incineration, open-air stacking or underground burying and the like. The method not only increases the cost of garbage disposal of enterprises, but also causes serious practical and potential pollution to environment, soil, underground water, atmosphere and the like, and is also a great waste of renewable resources. Therefore, the method is imperative for accelerating the development of the technology for recycling the waste textile fibers. In the modern civilized era of human being entering, people have higher and higher requirements on quality of life, and the green environmental protection consciousness is particularly strong, and no matter from people's concept perspective, the legal level and the cost burden degree are not feasible by adopting the traditional treatment mode of chemical fiber textile waste materials. Most of the common waste textile fibers are blended products or derivatives of terylene, and the terylene fibers are polyester fibers. How to regenerate the waste polyester fibers to change waste into valuable is a problem which needs to be solved in a garment processing centralized region.

Disclosure of Invention

The invention discloses a preparation process of regenerated polyester particles by taking waste clothing fibers as a main raw material, aiming at solving the problems of high cost and environmental pollution of the traditional treatment mode of the waste polyester fibers.

The technical scheme adopted by the invention is as follows: a preparation process of regenerated polyester granules taking clothing waste fibers as main raw materials comprises the following process flows of material selection, sorting, melting, granulation, cooling and packaging:

selecting materials: the raw materials are selected to collect waste materials of terylene, including waste leftover materials of a clothing factory, waste yarn balls and cloth ends of a textile factory, waste cloth velvet of a bleaching and dyeing factory and waste silk and material blocks of a chemical fiber factory;

sorting: sorting, namely classifying and storing the collected polyester waste materials according to colors, and manually removing waste materials including blended waste materials, cotton waste materials, sizing waste materials or sizing waste materials from clothing factories and performing color sorting on waste materials with mixed colors;

Melting: in the melting step, the sorted waste materials are put into a melting granulator for friction heating dissolution, and the temperature is controlled to be 250-255 ℃;

And (3) granulation: granulating, namely dissolving the waste materials into turbulent flow rubber materials in a melting process, adding water for rapidly cooling, and isolating solidified bodies by water to form granules due to high-speed stirring in the process of solidifying the turbulent flow rubber materials into solids;

Cooling and packaging: after the sizing material is formed into particles, under the condition that a melting granulator continues to operate, a discharge port is opened to discharge the particles, then an air blower is used for quickly radiating and cooling the particles, and the particles reach normal temperature and then can enter a chemical fiber factory to be used as a recycling link of chemical fiber production raw materials after being packaged.

the invention has the beneficial effects that: the method is characterized in that after polyester wastes originally used as industrial wastes in the industries of clothing, textile, bleaching and dyeing and chemical fiber are recycled and granulated, the polyester wastes enter a chemical fiber plant for re-drawing and recycling, so that the environmental pollution is reduced, the value is created for the society while the good China is created by adding tiles, the raw material cost is reduced for the chemical fiber plant, and the employment post is increased.

drawings

the invention has no attached drawing.

Detailed Description

A preparation process of regenerated polyester granules taking clothing waste fibers as main raw materials comprises the following process flows of material selection, sorting, melting, granulation and packaging:

selecting materials: the raw materials are collected from waste materials of terylene, and waste leftover material rags which cannot be reused after being cut by clothing factories are mainly used, because the raw materials are most available. Meanwhile, the waste cloth velvet and cloth ends of a weaving mill and the waste yarn balls of a spinning mill are good raw materials. The waste silk and the material blocks of the chemical fiber factory are less because the waste silk and the material blocks can be re-melted.

Sorting: after the collected terylene waste materials are classified into different categories including rags, yarn balls and the like, the waste materials with different colors are stored respectively according to the colors. Meanwhile, the waste rags in clothing factories are manually identified, and the blended, cotton yarn-containing, sized or glued rags or cloth ends are removed and treated by different methods. Carrying out color sorting on the waste materials with mixed colors;

Melting: and in the melting step, the sorted waste materials are respectively put into a melting granulator according to the category to be rubbed and heated for dissolution. The melting granulator is prepared by loading waste materials such as rag into a melting granulator, rotating at high speed, and rapidly heating the waste materials by high-speed friction in the melting granulator until the waste materials are softened and dissolved. In order to maintain the physical properties of the regenerated polyester granules, the temperature in the pot is controlled to be 250-255 ℃;

And (3) granulation: granulating, namely dissolving the waste materials into turbulent flow rubber materials in a melting process, adding water into the turbulent flow rubber materials, and rapidly cooling to ensure that the solidified materials are isolated by water to form granules due to high-speed stirring in the process of solidifying the turbulent flow rubber materials into a solid;

cooling and packaging: and after the sizing material forms particles, under the condition that the melting granulator continues to operate, opening the discharge port to discharge the particles, and then turning and blasting the particles by using an air blower to quickly dissipate heat and cool the particles so as to maintain the original physical properties of the polyester particles. When the granular materials reach normal temperature, the granular materials are directly packaged or input into a storage bin for storage, and the obtained granular materials can enter a chemical fiber plant to be used as a recycling link of chemical fiber production raw materials.

Claims (1)

1. a preparation process of regenerated polyester granules taking clothing waste fibers as main raw materials is characterized by comprising the following steps: the process flow comprises the following steps of material selection, sorting, melting, granulation and packaging:

Selecting materials: the raw materials are selected to collect waste materials of terylene, including waste leftover materials of clothing factories, waste flannelette and waste yarn balls of textile factories, and waste silk and material blocks of chemical fiber factories;

sorting: sorting, namely classifying and storing the collected polyester waste materials according to colors, and manually removing waste materials including blended waste materials, cotton waste materials, sizing waste materials or sizing waste materials from clothing factories and performing color sorting on waste materials with mixed colors;

Melting: in the melting step, the sorted waste materials are put into a melting granulator for friction heating dissolution, and the temperature is controlled to be 250-255 ℃;

And (3) granulation: granulating, namely dissolving the waste materials into turbulent flow rubber materials in a melting process, adding water for rapidly cooling, and isolating solidified bodies by water to form granules due to high-speed stirring in the process of solidifying the turbulent flow rubber materials into solids;

Cooling and packaging: after the sizing material is formed into particles, under the condition that a melting granulator continues to operate, a discharge port is opened to discharge the particles, then an air blower is used for quickly radiating and cooling the particles, and the particles reach normal temperature and then can enter a chemical fiber factory to be used as a recycling link of chemical fiber production raw materials after being packaged.