Apparatus used for separating isotope mixing gas

Abstract

The invention discloses an apparatus used for separating isotope mixing gas, which relates to the mixing gas separation field. The apparatus used for separating isotope mixing gas comprises relatively arranged upper resonant cavity and lower resonant cavity, an upper separator plate is arranged at bottom of the upper resonant cavity, a lower separator plate is arranged at top of the lower resonant cavity, several separating tubes are arranged between the upper separator plate and the lower separator plate, a cooling pipe is jointed at external part of each separating tube, the cooling pipes are mutually communicated, a water inlet is opened at bottom of at least one of the cooling pipe, and a water outlet is opened at top of at least one of the cooling pipe; length L of each separating tube is determined by wavelength Lambda of mixing gas under work frequency: L is less than 1 / 4 Lambda; cross section of each separating tube is a circle with diameter being d, d can be determined according to the mass diffusion penetration depth h of the mixing gas to be separated: d is greater than 2h and less than 4h. According to the invention, thermoacoustic separating effect and diffusion separating effect are simultaneously reduced, two separating effects are mutually promoted, and separating efficiency is increased.

Description

technical field [0001] The invention relates to the field of mixed gas separation, in particular to a device for separating isotope mixed gas. Background technique [0002] The separation of mixed gases has always been a very active field in the chemical industry and related industries. Different separation methods are required for different needs. Traditional mixed gas separation methods include distillation, centrifugation, thermal diffusion, molecular diffusion and chromatography, among which distillation is the most widely used and most efficient gas separation method. [0003] When separating a mixed gas composed of isotopes or isomers, the distillation method is no longer effective because the boiling points of the components in the mixed gas are the same or very close. At this time, non-distillation separation methods are required, such as thermal diffusion separation methods and thermoacoustic separation methods. [0004] The device used in the thermal diffusion se...

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Problems solved by technology

[0008] (1) The thermoacoustic separation method needs to first establish a temperature gradient in the viscous boundary layer, and the temperature gradient generated in the process of acoustic wave expansion and compression is very small, which seriously affects the efficiency of the thermoacoustic separation method

[0009] (2) When thermal diffusion separation and thermoacoustic separation are used to separate isotopic mixed gases, the efficiency is low. In order to achieve the ideal separation effect, it is necessary to establish a multi-stage separation device, and the system is complex

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