Vacuum interlayer fractionation column and fractionation device

Abstract

The invention relates to a vacuum interlayer fractionation column. The vacuum interlayer fractionation column comprises a gas outlet, a gas inlet, an outer pipe, an inner column, a plurality of thorn-shaped clamping grooves and a plurality of spherical glass plugs, wherein the bottom end of the inner column extends outward to be provided with the gas inlet; the top end of the inner column extendsoutward to be provided with a connection pipe; the gas outlet is arranged at one side of the connection pipe; the outer pipe is located on an outer layer of the inner column; the outer pipe is used for surrounding and coating the inner column and sealing openings are fused at the bottom end and top end of the inner column, so that a gap is left between an inner wall of the outer pipe and an outerwall of the inner column and is used as a vacuum interlayer; the plurality of thorn-shaped clamping grooves are formed in an inner wall of the inner column; the inner column is inward sunken at the lower side of each thorn-shaped clamping groove to form a hoop; the spherical glass plugs are inserted into the hoops and are movably connected with the hoops. By adopting a vacuum interlayer structureof the vacuum interlayer fractionation column, after boiled steam of a mixed solution enters, the contact time of descending condensed liquid and ascending steam can be prolonged through the additional spherical glass plugs, and the descending condensed liquid and the ascending steam can be subjected to sufficient heat exchange; the condensation and heat exchange effects can be remarkably improved.

Description

technical field [0001] The invention relates to the technical field of a fractionation device for experiments, and relates to a vacuum interlayer fractionation column and a fractionation device. Background technique [0002] Fractional distillation is to use a fractionation column to separate mixtures with similar boiling points. The mixture undergoes multiple vaporization and condensation in the fractionation column, which is equivalent to multiple ordinary distillations. In the fractionation column, when the ascending steam contacts the descending condensate, the ascending vapor condenses and releases heat to vaporize the descending condensed part, and heat exchange occurs between the two. As a result, the volatile components in the ascending vapor increase and descend The high-boiling point components in the condensate increase, and the process is repeated many times, that is, the gas-liquid balance is carried out many times to achieve the effect of multiple distillations...

AI Technical Summary

Problems solved by technology

[0006] Here, in the existing fractionation device, when the vacuum connection device fails or the instrument leaks, the external gas will flow back into the fractionation device.

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