Extractive distillation device for aromatic hydrocarbon production

Abstract

An extractive distillation device for aromatic hydrocarbon production belongs to the field of extractive distillation devices and comprises a tank body, a feed inlet, a liquid outlet and a gas outlet are sequentially formed in the tank body, an electric heating pipe is spirally embedded in the inner wall of the tank body, a vertical pipe is rotatably mounted in the tank body, a driving motor capable of driving the vertical pipe to rotate is arranged on the tank body, the periphery of the vertical pipe is uniformly and fixedly connected with the inner ends of a plurality of rows of transverse pipes, transverse shafts are rotatably installed in the transverse pipes, the inner ends of the transverse shafts penetrate through the side wall of the vertical pipe to be located in the vertical pipe, first bevel gears are fixedly installed at the inner ends of the transverse shafts, the first bevel gears are meshed and matched with the corresponding second bevel gears respectively, the periphery of the transverse pipes are fixedly connected to the inner periphery of screw blades, and a row of liquid distribution holes are formed in the top sides of the transverse pipes. Raw materials are stirred through the transverse pipes, and the raw materials are transversely conveyed through the spiral blades in the transverse pipe, so that high-temperature raw materials near the side wall of a tank body and low-temperature raw materials near the vertical pipe can be mutually mixed, and the mixing effect is improved.

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 ...

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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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