Low-boiling-point substance continuous desorption device of bio-ester plasticizer

Abstract

The invention discloses a low-boiling-point substance continuous desorption device of a bio-ester plasticizer. The low-boiling-point substance continuous desorption device comprises a distillation receiving tank, a low fraction evaporation device and a vacuum device, wherein the distillation receiving tank is internally provided with a steam coil, a steam inlet and outlet, a vacuum outlet, a feeding and discharging port and an air blocking cover; the low fraction evaporation device is internally provided with a steam coil, the steam inlet and outlet, the vacuum outlet, an evaporation disc, a heating disc, a material inlet and a material outlet; the material outlet of the low fraction evaporation device is connected with the feeding port of the distillation receiving tank, and the discharging port of the distillation receiving tank is connected with the material inlet of the low fraction evaporation device and are delivered through a pump; and a vacuum port of the low fraction evaporation device and a vacuum port of the distillation receiving tank are respectively connected with the vacuum device, and the steam inlet and the steam outlet are connected with superheated steam. By adopting the low-boiling-point substance continuous desorption device of the bio-ester plasticizer, continuous operation of dehydration and removal of low-boiling-point substances during synthesis of bio-ester plasticizer is realized, the production efficiency is high, and the product quality is good and stable.

Description

Technical field [0001] The invention relates to production equipment for plastic plasticizers of organic chemical products, in particular to a device for continuously removing low-boiling substances of biological ester plasticizers. Background technique [0002] At present, when using fatty acid methyl esters to synthesize bio-ester plasticizers, since fatty acid methyl esters contain some low-boiling methyl esters, if these low fractions are not removed, the opening flash point of the finished bio-ester plasticizers will be lower. , Directly affects the application range of plasticizers. A distillation kettle is commonly used in the production of the existing fatty acid methyl ester synthetic bioester plasticizer, which can only achieve the purpose of removing water, and cannot remove low boiling substances, which limits the application field of the product. Summary of the invention [0003] The purpose of the present invention is to provide a device for continuously removing lo...

AI Technical Summary

Problems solved by technology

[0002] At present, when using fatty acid methyl esters to synthesize bio-ester plasticizers, since fatty acid methyl esters contain some low-boiling methyl esters, if these low fractions are not removed, the open flash point of the finished bio-ester plasticizer will be lower , which directly affects the scope of application of plasticizers

In the production of fatty acid methyl ester synthetic biological ester plasticizers, a distillation still is generally used, which can only achieve the purpose of removing water, but cannot remove low boiling substances, which limits the application field of the product

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