Horizontal depolymerization reaction kettle for polylactic acid production

Abstract

The present invention discloses a polylactic acid production horizontal depolymerization reaction kettle, which comprises a depolymerization reaction tank, a material feeding pipe and a heater, the depolymerization reaction tank is internally provided with a flattening structure, the flattening structure is connected with a ventilation structure, the flattening structure comprises a rotation shaft, a sliding sleeve, a rotation sleeve and a connection rod, the rotation shaft is slidably connected with the sliding sleeve, and the rotation sleeve is connected with the rotation shaft. The rotating sleeve is rotatably connected with a sliding sleeve, the sliding sleeve is fixedly connected with a connecting rod, the rotating shaft is slidably connected with a sliding sleeve, the sliding sleeve is fixedly connected with a Z-shaped rod, the Z-shaped rod is fixedly connected with the connecting rod, the Z-shaped rod is fixedly connected with a fixed magnet, and the end face of one end, close to the sliding sleeve, of the depolymerization reaction tank is fixedly connected with a magnet. The magnet comprises an upper semi-ring magnet and a lower semi-ring magnet, and the magnet is magnetically connected with the fixed magnet. Materials can be uniformly distributed at the bottom of the depolymerization reaction tank, the materials can be stirred while being flattened, and the depolymerization reaction speed is increased.

Description

technical field [0001] The invention relates to the technical field of polylactic acid production equipment, in particular to a horizontal depolymerization reactor for polylactic acid production. Background technique [0002] Refers to the process in which several or many molecules are connected by non-covalent bonds to form aggregates of spherical or linear molecules, which are separated by certain physical or chemical methods. Polylactic acid, also known as polylactide, is a polyester polymer obtained by polymerizing lactic acid as the main raw material. It is a new type of biodegradable material. [0003] Depolymerization reaction is one of the most important reactions in the production process of polylactic acid. The existing depolymerization kettle mainly puts materials into the kettle body, and then accelerates the depolymerization reaction by heating, etc., but the existing depolymerization kettle is feeding After that, the materials added to the depolymerization ket...

AI Technical Summary

Problems solved by technology

[0003] Depolymerization reaction is one of the most important reactions in the production process of polylactic acid. The existing depolymerization kettle mainly puts materials into the kettle body, and then accelerates the depolymerization reaction by heating, etc., but the existing depolymerization kettle is feeding After that, the materials added to the depolymerization kettle are all piled up under the feed inlet, resulting in insufficient contact with the chemical reagents inside the materials, resulting in the completion of the depolymerization reaction of the external materials, and the beginning of the internal depolymerization reaction, which seriously affects the Production of polylactic acid

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