A method for fixing pulse sieve plate column sieve plate

Abstract

The invention belongs to the technical field of extraction and purification processing equipment in the field of uranium purification and production, and particularly relates to a method for fixing sieve plates of a pulse sieve plate column. According to the method for fixing the sieve plates of the pulse sieve plate columns, transverse fixing of the sieve plates is achieved through a central rod, pull rods and the like so that a gap between a column body and a plate string can be reduced, and mass transfer is sufficiently achieved. Radial fixing of the sieve plates is achieved through the pull rods and pull rod pipe spacers so that it can be guaranteed that the sieve plates are not prone to deformation, and mixed mass transfer is stable. Longitudinal fixing of the sieve plates is achieved through central pipe spacers, so that it is guaranteed that the distances between the sieve plates are equal, and mixed mass transfer is stable.

Description

technical field [0001] The invention belongs to the technical field of extraction and purification process equipment in the field of uranium purification production, and in particular relates to a method for fixing a sieve plate of a pulse sieve plate column. Background technique [0002] At present, the extraction equipment used in the nuclear field mainly includes three types: mixing and settling tank, centrifugal extractor and pulse extraction column. Due to the large floor area of ​​the mixing and settling tank, it is not easy to remove dirt and other defects; the centrifugal extractor has the disadvantages of difficult maintenance and complex equipment structure, etc. These two kinds of extraction equipment are gradually replaced by pulse extraction columns. [0003] Pulse extraction columns mainly exist in two forms: sieve plate and baffle plate. The pulsed sieve tray column was invented by Van Dijk in 1935. The pulse sieve plate tower is a cylindrical tower with a p...

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Problems solved by technology

This tower is characterized by large flux and high efficiency, but it has large vibration and many equipment failures, which is not conducive to its continuous and stable operation.

[0005] At present, at home and abroad, the sieve plate fixing method of large pulse sieve plate columns is mainly fixed by the central rod, but as the sieve plate increases, it is easy to deform in the radial direction, which affects its mass transfer effect. At the same time, the traditional welding technology is not conducive to Installation and maintenance of large equipment

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