A chip boiling crystallization dryer for polyester chemical fiber production

Abstract

The invention relates to the field of dryers, in particular to a slice boiling crystallization dryer for polyester chemical fiber production, which includes a feeding mechanism, a heating mechanism, a suction head, a discharging mechanism, a fixing mechanism, a storage mechanism, a sealing mechanism and an encryption mechanism. Mechanism; the inner side wall of the inner shell is equidistantly and symmetrically fixedly connected to the heat conduction plate with an arc-shaped structure on the side and an inverted "eight" structure, and several sets of heating tubes with a "Z" structure inside the heat conduction plate. On the one hand , to increase the contact area, so that the water in the raw material evaporates more completely and crystallizes in an all-round way. On the other hand, it avoids the blockage of the raw material between the two heat conduction plates during the feeding process, making the feeding smoother; the inner shell The bottom of the feeding pipe is fixedly connected to the feeding pipe, and the inside of the feeding pipe is spirally provided with a feeding trough, and the feeding chute at the bottom of the inner shell is in an inverted "eight" shape structure, and the feeding chute at the bottom of the feeding pipe is in the shape of "eight". "The glyph structure is convenient for unloading and makes unloading smoother.

Description

technical field [0001] The invention relates to the field of dryers, in particular to a slice boiling crystallization dryer for polyester chemical fiber production. Background technique [0002] Crystallization dryer is also known as stirring dryer, pre-crystallization machine, pre-crystallization dryer, polyester is an important variety in synthetic fibers, and it is the trade name of polyester fiber in my country. It is a fiber-forming high polymer prepared from purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (MEG) through esterification or transesterification and polycondensation reactions—— Polyethylene terephthalate (PET) is a fiber made by spinning and post-processing. In chemistry, after the hot saturated solution is cooled, the solute is precipitated in the form of crystals. This process is called crystallization. [0003] However, the hopper of the traditional slicing boiling crystallization dryer for polyester chemical fiber pr...

AI Technical Summary

Problems solved by technology

[0003] However, the hopper of the traditional slicing boiling crystallization dryer for polyester chemical fiber production provides preheating for the raw materials. During the preheating process, the heating device is placed directly on the bottom of the hopper for heating. There is no sealing mechanism on the top, which causes the water in the raw material to evaporate uncleanly, resulting in incomplete crystallization, which is prone to blockage during feeding, and the feeding speed is slow. In view of this, the present invention provides a slice boiling crystallization for polyester chemical fiber production. Dryer, which has the following characteristics:

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