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Scraper device for crystallization tank

A scraper device and crystallization technology, applied in the direction of solution crystallization, cells, electrolysis components, etc., can solve the problems of cooling and maintaining the solution and the inability to reduce the heat transfer efficiency of the cooling device.

Active Publication Date: 2020-05-01
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Part of the crystallization (crystallization product) crystallized from the solution adheres to the inner surface of the crystallization tank, which may cause a decrease in the heat transfer efficiency of the cooling device and prevent the solution in the crystallization tank from being cooled and maintained at a specified level. temperature

Method used

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  • Scraper device for crystallization tank
  • Scraper device for crystallization tank
  • Scraper device for crystallization tank

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Embodiment Construction

[0028] One embodiment of the present invention will be described with reference to the drawings. In addition, here, the crystallization tank in the electroplating solution regeneration facility (for example, methanesulfonic acid regeneration facility) will be described as an example.

[0029] figure 1 It is a longitudinal sectional view showing a crystallization tank in one embodiment of the present invention, figure 2 It is a cross-sectional view showing the crystallization tank in one embodiment of the present invention.

[0030] Such as figure 1 , figure 2 As shown, the crystallization tank 1 in one embodiment of the present invention has a cylindrical shape and has: an outer cylinder 2; an inner cylinder 3 arranged on the inside of the outer cylinder 2; a top plate covering the top of the outer cylinder 2 and the inner cylinder 3 5a; The crystallization tank 1 is, for example, made of SUS304, and has a plate thickness of 2 to 6 mm.

[0031] Further, in order to coo...

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Abstract

The scraper device of the crystallization tank is provided to accurately scrape off the crystallization (crystal) adhering to the inner surface of the crystallization tank even when protrusions and recesses are formed on the inner surface of the crystallization tank. In order to scrape off the crystallization (32) attached to the inner surface (3a) of the inner cylinder (3), the scraper device (10) has: a scraper (12) for the convex part, which is used to scrape off the crystallization (32) attached to the convex part ( 3A) on the crystallization ( 32 ); and a scraper ( 14 ) for the concave portion, which is used to scrape off the crystallization ( 32 ) adhering to the concave portion ( 3B ).

Description

technical field [0001] The present invention relates to a scraper device for scraping off crystallization products (crystals) adhering to the inner surface of a crystallization tank in a crystallization tank for regenerating a used plating solution. Background technique [0002] In a plating solution (for example, methanesulfonic acid solution) used for tin plating on a steel sheet, iron components, water, and sludge are mixed. The plating solution is regenerated by removing these mixtures (iron component, moisture, sludge), for which purpose a plating solution regeneration facility (for example, methanesulfonic acid regeneration facility) is used. [0003] In this electroplating solution regeneration equipment, after the used electroplating solution is concentrated to a prescribed concentration (for example, 4 times the concentration) by the concentration device, the concentrated electroplating solution is transported to a crystallization tank (crystallization tank). ) in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D9/02C25D21/18
CPCB01D9/02C25D21/18
Inventor 大矢健市大野正胜豊田博高田基树
Owner JFE STEEL CORP
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