Fractionation device for organic chemistry experiment

Abstract

The invention provides a fractionation device for an organic chemistry experiment, the fractionation device comprises a water bath barrel, a raw material bottle, a fractionating column, an adjusting mechanism, a fraction collecting mechanism and a control box, the fraction collecting mechanism comprises a cooling pipe, a collecting bottle, an electromagnetic valve, a digital display screen and a refractive index detection mechanism, the water bath barrel heats the raw material bottle, so that a liquid mixture in the raw material bottle is evaporated, evaporated fractions can enter the fractionating column, different fractions can be collected through the cooling pipes with different heights arranged on the fractionating column, the fractionating efficiency is improved, the refractive index detection mechanism can detect the refractive index of fraction liquid in the collecting bottle, the control box sorts the refractive indexes of the fraction liquid in all the collection bottles according to data transmitted by the refractive index detection mechanism, and displays a corresponding digital sequence on the digital display screen, so that students can discriminate and inspect the fraction liquid in the collection bottles after the experiment is finished.

Description

technical field [0001] The invention relates to the technical field of fractionation, in particular to a fractionation device for organic chemistry experiments. Background technique [0002] Fractional distillation is a method of separating several mixtures with different boiling points. In the process, no new substances are formed, but the original substances are separated, which is a physical change. As a simple experiment, fractional distillation is widely used in organic chemistry experiments in schools. It can help students further understand the process of fractionation. However, in the current fractionation process, it is necessary to receive a variety of different fractions. Therefore, after obtaining the first fraction, it is often necessary to replace the receiving cup to receive the second fraction. On the one hand On the other hand, due to the general use of the container, when the second fraction is fractionated, it will be compatible with the part of the first ...

AI Technical Summary

Problems solved by technology

[0002] Fractional distillation is a method of separating several mixtures with different boiling points. In the process, no new substances are formed, but the original substances are separated, which is a physical change. As a simple experiment, fractional distillation is widely used in organic chemistry experiments in schools. It can help students further understand the process of fractionation. However, in the current fractionation process, it is necessary to receive a variety of different fractions. Therefore, after obtaining the first fraction, it is often necessary to replace the receiving cup to receive the second fraction. On the one hand On the other hand, due to the general use of the container, when the second fraction is fractionated, it will be compatible with the part of the first fraction remaining on the inner wall of the container, causing other substances to be contained in the subsequent fraction, which will eventually affect the fractionation. At the same time, after the current organic chemistry experiment is completed, the students will forget to receive the liquid in the cup if they are a little negligent, and cannot complete the chemical experiment efficiently

Images