An extractive distillation device for the production of aromatics

Abstract

An extractive distillation device for the production of aromatics, the invention belongs to the field of extractive distillation devices, comprising a tank, on which a feed inlet, a liquid outlet, and a gas outlet are arranged in sequence, the inner wall of the tank is spirally embedded with an electric heating tube, the tank The vertical pipe is rotated and installed in the body, and the tank body is provided with a drive motor capable of driving the vertical pipe to rotate. The outer circumference of the vertical pipe is evenly fixed and connected to the inner ends of several rows of horizontal pipes, and the horizontal shaft is installed in the horizontal pipe, and the inner end of the horizontal shaft passes through the vertical pipe. The side wall of the horizontal shaft is located in the vertical tube, the inner end of the horizontal shaft is fixedly installed with the first helical gear, and the first helical gear meshes with the corresponding second helical gear respectively, the outer circumference of the horizontal shaft is fixedly connected with the inner circumference of the spiral blade, and the top of the horizontal tube A row of several liquid distribution holes is opened on the side. The invention stirs the raw materials through the horizontal tube, and transmits the raw materials horizontally through the spiral blades in the horizontal tube, so that the raw materials with higher temperature near the side wall of the tank and the raw materials with lower temperature near the vertical pipe can be mixed with each other, increasing the mixing effect .

Description

technical field [0001] The invention belongs to the field of extractive distillation devices, in particular to an extractive distillation device for aromatics production. Background technique [0002] Aromatic hydrocarbons are called aromatic hydrocarbons, which generally refer to compounds containing benzene rings in their molecules. In the production process of aromatic hydrocarbons, different components in aromatic hydrocarbons need to be separated by extractive distillation, because the temperature difference between the boiling points of different components is small , the traditional distillation heating is easy to overheat the local raw materials, so that the gas evaporated by heating is impure, resulting in a reduction in the distillation effect. In order to make the raw materials evenly heated, the existing extraction distillation device usually uses a stirring rod to heat the raw materials. Stirring, but simple stirring can easily cause the raw materials to form a ...

AI Technical Summary

Problems solved by technology

[0002] Aromatic hydrocarbons are called aromatic hydrocarbons, which generally refer to compounds containing benzene rings in their molecules. In the production process of aromatic hydrocarbons, different components in aromatic hydrocarbons need to be separated by extractive distillation, because the temperature difference between the boiling points of different components is small , the traditional distillation heating is easy to overheat the local raw materials, so that the gas evaporated by heating is impure, resulting in a reduction in the distillation effect. In order to make the raw materials evenly heated, the existing extraction distillation device usually uses a stirring rod to heat the raw materials. Stirring, but simple stirring can easily cause the raw materials to form a swirling flow, the stirring effect on the raw materials is poor, the raw materials cannot be fully mixed, and the actual needs cannot be met, so we invented an extractive distillation device for the production of aromatics

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