Continuous polyester preparation system for tensile renewable polyester staple fibers and operation method thereof

Abstract

The invention discloses a continuous polyester preparation system of tensile renewable polyester staple fibers and an operation method thereof. The continuous polyester preparation system comprises akettle body and a kettle cover, wherein the kettle body and the kettle cover are fixedly connected through bolts, the bottom of the kettle body communicates with a discharge pipe, and a valve is fixedly connected to the discharge pipe. The invention relates to the technical field of chemical equipment. According to the continuous polyester preparation system of the tensile renewable polyester staple fibers and the operation method thereof in the invention, a spiral condensation pipe is arranged in a condensation box, so a contact area with air is increased, higher heat dissipation efficiency is obtained, and cooperation of double structures consisting of a cooling tower and the condensation pipe is omitted; and meanwhile, since a first fan is arranged to accelerate air flow, a cooling speed can be further increased, and heat taken away by air can be discharged into a heat preservation cavity in the kettle cover, so an inner layer is kept at a high temperature, the cooling effect of outside air on the kettle cover is avoided, the problem that distilled steam is condensed on the inner surface of the kettle cover is avoided, and distillation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of chemical equipment, in particular to a continuous-process polyester preparation system for stretch-resistant renewable polyester staple fibers and an operating method thereof. Background technique [0002] Polyester fiber, commonly known as "polyester", is a synthetic fiber obtained by spinning polyester obtained by polycondensation of organic dibasic acid and dibasic alcohol, referred to as PET fiber, which belongs to polymer compounds. It was invented in 1941 and is the current synthetic The number one variety of fiber. The biggest advantage of polyester fiber is that it has good wrinkle resistance and shape retention, and has high strength and elastic recovery ability. It is strong and durable, anti-wrinkle and non-ironing, and non-sticky. Polyester (PET) fiber is a synthetic fiber spun from each chain link in the macromolecular chain through an ester group to form a fiber-forming polymer. The Englis...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a continuous polyester preparation system and its operation method for tensile renewable polyester staple fiber, which solves the problem that the existing reaction kettles are generally made of metal, and the cost is relatively high. And the lid of the kettle is exposed to the air, there will be a small amount of steam condensation on the inner surface, which will affect the efficiency of extraction; at the same time, a kind of equipment for preparing polyester polyol disclosed in the prior art CN208786398U uses a cooling tower and a condensation pipe Double cooling measures increase the steps and cost, and the cooling efficiency is low, and the use of infrared electric heating jacket also increases the problem of cost

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