Slice drying system

Abstract

The invention relates to a slice drying system. An outlet of a bottom discharge valve of a slice intermediate bin is connected with a slice feed port at the top of a slice drying tower I through an air conveying pipeline I, and an outlet at the bottom of the slice drying tower I is connected with a slice feed port at the top of a slice drying tower II through a drying tower discharge valve and anair conveying pipeline II, a bottom discharge port of the slice drying tower II is connected with a main feed port of a mixed material bin, and an outlet of the mixed material bin is connected with avacuum packaging machine. Hot air outlets in the tops of the slice drying tower I and the slice drying tower II are connected with an air inlet of a dust remover through dust removal air suction pipes, an air outlet in the top of the dust remover is connected with an air supplementing port of an air conveying pipeline III through an air return pipeline, and a feed port of the air conveying pipeline III is connected with an outlet of a slice batching valve, an inlet of the slice batching valve is connected with an outlet of a slice batching hopper, and an outlet of the air conveying pipeline III is connected with an auxiliary feed port of the mixed material bin. According to the system, slices can be in full contact with hot air flow, moisture and tetrahydrofuran are thoroughly removed, andthe product grade is improved.

Description

technical field [0001] The invention relates to a production system of polyester chips, in particular to a chip drying system, which belongs to the technical field of polyester chip production equipment. Background technique [0002] In the existing production line, PBS slices (polybutylene succinate) are usually dehydrated through a centrifuge or a vacuum drum machine, which can only remove the moisture on the surface of the PBS slices, so that the PBS slices entering the intermediate silo The moisture content of slices is still relatively high. If the packaging is used directly, it is easy to cause degradation. At the same time, a certain amount of tetrahydrofuran (THF) contained in the slices is easy to be released gradually after a period of time. There are batch differences between the produced materials, which cannot be uniform, which affects the use level of the product. Contents of the invention [0003] The object of the present invention is to overcome the probl...

AI Technical Summary

Problems solved by technology

If it is packaged directly, it is easy to cause degradation. At the same time, a certain amount of tetrahydrofuran (THF) contained in the slices is easy to be released gradually after a period of time. There are batch differences between the produced materials, which cannot be uniform and affect the use level of the product.

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