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Oxalate deposited slurry filtering device

A filter device, oxalate technology

Active Publication Date: 2018-10-02
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problems of this oxalate precipitation slurry filter are: the small filtration area results in small production capacity; it is not easy to realize the regeneration and replacement of the filter material; it is not easy to realize the unloading operation of the oxalate precipitation filter cake

Method used

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.

[0022] The structure of the exemplary oxalate precipitation slurry filter device of the present invention is as follows: Figure 1-2 As shown, it includes a top cover 1, a filter cup 2, a filter cartridge 3, a lifting table 4, a lifting and pressing mechanism 5, a scraper 6, an oxalate precipitation slurry inlet pipe 7, and a filtrate outlet pipe 8.

[0023] The filter cup 2 is placed on the lifting platform 4 as a filter chamber, and the lifting platform 4 is placed on the lifting and pressing mechanism 5 tops. The upper part of the filter cup 2 is sealed with a disc-shaped top cover 1 made of stainless steel.

[0024] As a filter material, a filter cartridge 3 made of sintered stainless steel is placed in the filter cup 2 for separating the oxalate precipitate filter cake (attached to the outer wall of the filter cartridge 3) a...

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Abstract

The invention belongs to the technical field of filtering devices, and relates to an oxalate deposited slurry filtering device. The filtering device comprises a top cover, a filter cup, a filter cylinder, a scraper, an oxalate deposited slurry inlet pipe, and a filtrate outlet pipe. The filter cup is taken as the filter chamber. The upper part of the filter cup is provided with a sealing top cover. The filter cylinder is arranged in the filter cup and is used to separate oxalate deposit and filtrate. The upper part of the filter cylinder is connected to the top cover. The scraper, which can move up and down, is arranged between the inner lateral wall of the filter cup and the outer lateral wall of the filter cylinder and is used to scrape filter cakes adhered on the outer lateral wall of the filter cylinder. The oxalate deposited slurry inlet pipe is connected to the top cover and is used to introduce oxalate deposited slurry into the filter cup and the exterior of the filter cylinder.The filtrate outlet pipe is connected to the top cover and is used to discharge filtrate from the filter cylinder. The provided filter device has the advantages that the filter area is large, the filter material can be regenerated easily, and the oxalate filter cakes can be easily unloaded.

Description

technical field [0001] The invention belongs to the technical field of filtering devices, and relates to an oxalate precipitation slurry filtering device. Background technique [0002] At present, most nuclear fuel reprocessing plants around the world use the Purex process. At the end of the Purex process, the metal nitrate solution and oxalic acid solution to be recovered complete the precipitation reaction in the precipitation reactor to generate an oxalate precipitation slurry, and then the oxalate precipitation slurry needs to be sent to a filter for filtration to obtain a filter. The cake is used for further processing. [0003] The existing oxalate precipitation slurry filter adopts the structural form of a circular filter plate, and the circular filter plate is placed in a cylindrical container. The entire filtration operation is carried out under a certain degree of vacuum, the oxalate precipitation slurry enters from the top of the filter, forms a filter cake on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D29/33B01D29/64
CPCB01D29/33B01D29/6484
Inventor 侯学锋侯媛媛储凌吴德慧陈勇李鑫侯留东
Owner CHINA NUCLEAR POWER ENG CO LTD
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