Automatic control fractionation device and application thereof

Abstract

The invention discloses an automatic control fractionation device and application thereof and relates to the technical field of distillation. The automatic control fractionation device is characterized in that a flask belly of a single-opening flask is arranged in a temperature control dry bath boiler; the single-opening flask is connected with a three-way distillation head; an upper opening of the three-way distillation head is connected to a temperature sensor; the temperature sensor is connected with a programmable logic controller (PLC); the PLC is connected with a four-position three-way electric valve; the side opening of the three-way distillation head is connected with an inlet of a condensation pipe; an outlet of the condensation pipe is connected with a liquid receiving pipe; and the four-position three-way electric valve is connected with a liquid receiving bottle. The application comprises the following steps of: 1, writing a program about temperature control conditions required by materials to be distilled and separated into the PLC; 2, placing material liquid to be fractionated into the single-opening flask; 3, enabling the material liquid to flow into the liquid receiving bottle A through the liquid receiving pipe, the four-position three-way electric valve and a guide hose A; and 4, when low-temperature components are completely distilled, rising the temperature, sending a signal to a PLC control module by the temperature sensor, sending out an instruction from the PLC to switch the position of the electric valve. The automatic control fractionation device has the characteristic of simple structure and can precisely control fractionation of components with different boiling points.

Description

technical field [0001] The automatically controlled fractionation device and its application relate to the technical field of distillation. Background technique [0002] In the experiment, some samples to be distilled or extracted have a limited amount of samples, and the extremely limited samples are operated in a large-scale equipment such as a distillation tower, which is obviously not enough to expand the samples, and the device is complicated and costly. Use a simple distillation device to separate components with different boiling points. In a simple distillation device, you need to observe the change of the distillation temperature at any time during operation, which will cause visual fatigue over time. Even if you stare closely at the thermometer, it is difficult to control the distillation temperature for switching and separation. Contents of the invention [0003] In order to overcome the deficiencies in the above-mentioned prior art, one of the purposes of the p...

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Problems solved by technology

[0002] In the experiment, some samples to be distilled or extracted have a limited amount of samples, and the extremely limited samples are operated in a large-scale equipment such as a distillation tower, which is obviously not enough to expand the samples, and the device is complicated and costly

Use a simple distillation device to separate components with different boiling points. In a simple distillation device, you need to observe the change of the distillation temperature at any time during operation, which will cause visual fatigue over time. Even if you stare at the thermometer closely, it is difficult to control the distillation temperature for switching and separation.

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