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Bottle-grade polyester chip with low acetaldehyde content and preparation method thereof

A polyester chip, low acetaldehyde technology, applied in the direction of sustainable manufacturing/processing, chemical industry, climate sustainability, etc., can solve the problems of energy waste, high cost, high acetaldehyde content, etc., to reduce production costs, energy The effect of reducing power consumption and low energy consumption

Inactive Publication Date: 2020-03-17
江苏栖云新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a bottle-grade polyester chip with low acetaldehyde content and a preparation method thereof, which solves the problem that the existing bottle-grade polyester chip has a relatively high acetaldehyde content and some low-acetaldehyde content The cost of producing bottle-grade polyester chips is relatively high, resulting in energy waste

Method used

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Embodiment Construction

[0022] Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] The invention provides a technical solution: a bottle-grade polyester chip with low acetaldehyde content and a preparation method thereof. The bottle-grade polyester chip mainly includes purified terephthalic acid and ethylene glycol as main raw materials, and IPA, DEG and modified Non-toxic additives are auxiliary materials, antimony ethylene glycol is used as a catalyst, and the operating temperature of the catalyst is low, so the energy consumption is greatly reduced. Since the catalyst burns organic matter more completely, the residual amount of hydrocarbons after combustion is below 5ppm.

[0024] The preparation method comprises the following steps:

[0025] S1. Collect and acquire raw materials, and reconcile the ratio of the acquired raw materia...

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Abstract

The invention discloses a bottle-grade polyester chip with low acetaldehyde content and a preparation method thereof, and relates to the technical field of polyester chips. The bottle-grade polyesterchip mainly comprises purified terephthalic acid and ethylene glycol which are taken as main raw materials, IPA, DEG and a modification additive which are taken as auxiliary materials, and ethylene glycol antimony as a catalyst. According to the bottle-grade polyester chip with low acetaldehyde content and the preparation method thereof, a complete set of special technology is selected, a reactoris high in efficiency, good in controllability and relatively low in energy consumption, the terminal carboxyl group content in the product is controllable, the final acetaldehyde production amount ofdifferent types of bottles can be controlled, the energy-saving and environment-friendly design is emphasized while the production requirements are met, the advanced production process design is applied to engineering practice, for example, esterification reaction steam waste heat is adopted for refrigeration, chilled water is conveyed to a solid-phase tackifying device, sewage is subjected to steam stripping, tail gas obtained after steam stripping is conveyed to a hot coal furnace to be incinerated, process tail gas is collected and conveyed to a boiler to be incinerated, and other new processes, so that energy consumption is reduced, and waste gas emission is reduced.

Description

technical field [0001] The invention relates to the technical field of polyester chips, in particular to bottle-grade polyester chips with low acetaldehyde content and a preparation method thereof. Background technique [0002] Bottle-grade polyester chips have a uniform crystal structure, narrow molecular mass distribution, non-toxic, odorless, glass-like transparency and luster, good impact toughness and high strength, good gas permeability, and can extend the shelf life of beverages; processing Simple, small dimensional change or creep under load, but compared with glass, it has many characteristics of light weight and good safety. Bottle-grade polyester chips of different specifications are suitable for mineral water, beverages, medicines, edible oils, etc. A range of packaging for different products. [0003] Bottle-grade polyester chips are mainly used in beverage packaging bottles. Acetaldehyde will affect the taste and quality of bottled beverages and cause beverage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/672C08G63/86C08G63/80
CPCC08G63/672C08G63/785C08G63/80C08G63/866Y02P20/10
Inventor 白冰陈涧凯
Owner 江苏栖云新材料科技有限公司