Pigment impurity removal device for recovering polypropylene fibers and use method of pigment impurity removal device

Abstract

The invention belongs to the technical field of polypropylene fiber processing, and particularly relates to a pigment impurity removal device for recovering polypropylene fibers and a use method of the pigment impurity removal device. The pigment impurity removal device comprises a reaction kettle, wherein heating and stirring devices are mounted on the left side wall and the right side wall of the reaction kettle in a penetrating manner; a molten pool and a precipitation and filtration bin are arranged in the reaction kettle; a discharge opening is formed in the bottom of the molten pool andis fixedly connected with a first electric control valve; a discharge opening is formed in the bottom of the precipitation and filtration bin and is fixedly connected with a second electric control valve; a preheating and crushing device is arranged at the upper part of an inner cavity of the reaction kettle; an anti-solidification heating device is mounted on the outer side wall of the bottom ofthe reaction kettle in a coating manner; supporting bottom feet are welded at the bottom of the reaction kettle; the supporting bottom feet penetrate through the anti-solidification heating device andare welded with the bottom of the reaction kettle; and a control device is arranged on the reaction kettle. The device can uniformly heat polypropylene fiber materials in the molten pool, so that thetemperature control is easier, the heating and stirring effects are good, and the efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of polypropylene fiber processing, and in particular relates to a pigment impurity removal device for recycling polypropylene fiber and an application method thereof. Background technique [0002] Polypropylene fiber is a synthetic fiber spun from isotactic polypropylene obtained by propylene polymerization. In the process of removing impurities from polypropylene fibers, the polypropylene fibers need to be melted and heated at a high temperature using a reactor. The heating temperature needs to be strictly controlled, but the heating effect of the existing devices is not ideal. It is easy to cause uneven temperature distribution due to uneven heating, and the temperature is too high or too low, which affects the effect of pigment removal. At the same time, the efficiency of heating and stirring is not high, which needs to be improved. Contents of the invention [0003] In order to solve the problems rais...

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Problems solved by technology

[0002] Polypropylene fiber is a synthetic fiber spun from isotactic polypropylene obtained by propylene polymerization. In the process of removing impurities from polypropylene fibers, the polypropylene fibers need to be melted and heated at high temperature using a reactor. The heating temperature needs to be strictly controlled, but the heating effect of the existing devices is not ideal. It is easy to cause uneven temperature distribution due to uneven heating, and the temperature is too high or too low, which affects the effect of pigment removal. At the same time, the efficiency of heating and stirring is not high, which needs to be improved

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