Water stirring crystallization equipment for low-melting-point polyester chips

Abstract

The invention discloses water stirring crystallization equipment for low-melting-point polyester chips. The water stirring crystallization equipment comprises a base and a crystallization box, wherein the crystallization box is fixedly connected with the top of the base, a feeding port is formed in the top of the crystallization box, a crystallization bed is fixedly connected to the upper portion in the crystallization box, a stirring assembly is arranged on the lower portion of the crystallization bed, a temperature control assembly is arranged on the left side of the top wall in the crystallization box, a fan is arranged on the left side of the top of the base and connected with the crystallization box through a first air pipe, an electric heating pipe is arranged on the left side in the crystallization box, the right side of the crystallization box is connected with a condensation box through a second air pipe, and a condensation pipe is installed in the condensation box and connected with the fan through a third air pipe. According to the invention, polyester chip crystals on a crystallization bed are stirred through a stirring assembly so as to prevent surface adhesion of polyester chips and condensation of water vapor in a condensation box, dried hot air reaches a fan through a third air pipe to achieve cyclic utilization of energy, and the temperature in the crystallization box is controlled through a temperature control assembly to ensure the crystallization temperature and improve the polyester chip quality.

Description

technical field [0001] The invention relates to the technical field of crystallization of polyester chips, in particular to a water stirring crystallization device for polyester chips with a low melting point. Background technique [0002] Polyester chips usually refer to the polyester raw materials obtained by polymerization, which are generally processed into flake particles of about 4*5*2 mm. The process routes of polyester production include direct esterification method (PTA method) and transesterification method (DMT method). The PTA method has the advantages of low raw material consumption and short reaction time, and has become the main process and preferred technical route of polyester since the 1980s. The large-scale production line is a continuous production process, while the semi-continuous and batch production process is suitable for various small and medium-sized production devices. The use of polyester now includes fibers, various containers, packaging mater...

AI Technical Summary

Problems solved by technology

[0003] When the existing polyester chips are crystallized in the crystallization bed, the surface of the polyester chips is easy to stick, resulting in a decrease in the quality of the crystallized polyester chips. When the temperature is high, it may cause aging of the crystallization of polyester chips. When the temperature is too low, the crystallization speed of polyester chips will decrease, and the crystallization effect will not be good.

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