Filling material special for producing C-13 isotope with CO cryogenic rectification method

Abstract

The invention relates to special packing for producing a carbon-13 isotope by a CO low-temperature rectification method. The packing comprises disk packing and particle packing, wherein, the disk packing comprises a plurality of corrugated sheets, a stainless steel screen tray and a stainless steel screen outline border which are pressed by stainless steel screens; the plurality of the corrugated sheets which are pressed by the stainless steel screens are vertically arranged in the stainless steel screen outline border, and two adjacent corrugated sheets are in opposite corrugated directions; the stainless steel screen tray is arranged on the bottom of the vertically arranged stainless steel corrugated sheets; the stainless steel corrugated sheets are inclined corrugated sheets; a slope angle is formed between the peak line or the valley line of each corrugated sheet and the vertical axes of a packing tray; each stainless steel corrugated sheet is provided with a plurality of orifices; a plurality of receiving spaces are formed between two adjacent stainless steel corrugated sheets; and the particle packing is filled in the receiving spaces. Compared with the prior art, the special packing for producing the carbon-13 isotope by the CO low-temperature rectification method has the characteristics of unobvious amplification effect, high efficiency and so on.

Description

technical field [0001] The present invention relates to a new type of special packing for chemical industry separation, in particular to a high-efficiency composite packing PACK- 13 c. Background technique [0002] CO cryogenic rectification method is currently the only successful industrial production method of stable isotope carbon-13. Since its separation coefficient is only 1.007 and decreases with the increase of pressure, in order to obtain high-abundance products, thousands of A cryogenic rectification column with one theoretical plate. Therefore, there is a need for high-efficiency packing with high separation efficiency, small pressure drop, and insignificant amplification effect. [0003] At present, there are two types of high-efficiency packing, one is regular high-efficiency packing, such as wire mesh corrugated packing, the specific surface area (phase contact area) is generally 700m 2 / m 3 . , the equivalent height of each theoretical plate is HETP=8cm, a...

AI Technical Summary

Problems solved by technology

In the existing CO cryogenic distillation towers, almost all of them use small particle packing, which is not conducive to improving the efficiency of large tower diameters, so it is necessary to find a better way to make a breakthrough

Images