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Dropping nozzle device, device for recovering dropping undiluted solution, device for supplying dropping undiluted solution, device for solidifying surface of droplet, device for circulating aqueous a

一种氨水溶液、喷嘴装置的技术，应用在喷射装置、喷射装置、液体喷射装置等方向，能够解决硝酸双氧铀与铵离子反应不充分、差不良品、不易生成粒径ADU粒子等问题

Inactive Publication Date: 2006-11-22
NUCLEAR FUEL INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it takes a long time to cause the center of the droplet to become ammonium diuranate. In addition, under the condition that the droplet stays in the ammonia solution for a certain period of time, it is easy to cause insufficient reaction between uranyl nitrate and ammonium ions. The problem
Therefore, it is difficult to produce ADU particles with a large particle size in the conventional ADU particle production equipment.
The fuel nuclei processed by the post-processing process may have voids inside, resulting in defective products
[0022] Moreover, since the inside of the ADU particles whose internal reaction has not been completed is colloidal and very soft, if the ADU particles with a large specific gravity containing uranium are stacked and accumulated, the ADU particles located at the lower side of the ammonia solution storage tank will be damaged. Deformation, resulting in the production of defective products with many poor sphericity

Method used

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  • Dropping nozzle device, device for recovering dropping undiluted solution, device for supplying dropping undiluted solution, device for solidifying surface of droplet, device for circulating aqueous a
  • Dropping nozzle device, device for recovering dropping undiluted solution, device for supplying dropping undiluted solution, device for solidifying surface of droplet, device for circulating aqueous a
  • Dropping nozzle device, device for recovering dropping undiluted solution, device for supplying dropping undiluted solution, device for solidifying surface of droplet, device for circulating aqueous a

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0171] use Figure 5 and Figure 6 The drip nozzle assembly 2 is shown. The nozzle 4 is in the shape of a circular tube with an inner diameter of 0.5 mm and a length of 15 mm. Moreover, the drip stock solution storage tank 26 is a cylindrical member with an inner diameter of 6 mm and a length of 12 mm. Furthermore, the drop stock solution is obtained by adding and mixing polyvinyl alcohol resin or the like to a uranyl nitrate solution obtained by dissolving uranium oxide in nitric acid. The viscosity of the dropping stock solution is about 60 cP, and the concentration of the dropping stock solution containing uranyl nitrate is 0.7 mole-U / L.

[0172] The dripping stock solution stored in the dripping stock solution storage tank 26 is dripped from the front end opening of the nozzle 4 into the ammonia solution in the ammonia solution storage tank 3 . The ammonia concentration of the aqueous ammonia solution was 25% by volume.

[0173] ADU particles are formed by fully react...

Embodiment 2

[0192] A uranyl nitrate solution is mixed with a water-soluble cyclic ether such as tetrahydrofurfuryl alcohol (hereinafter referred to as THFA) to prepare a solution containing uranyl nitrate. On the other hand, a water-soluble polymer such as polyvinyl alcohol is mixed with water to form A water-soluble polymer solution with a concentration of 7.3% by mass is mixed with a water-soluble cyclic ether such as tetrahydrofurfuryl alcohol to prepare a water-soluble polymer solution, and then the solution containing the aforementioned uranyl nitrate is mixed with the aforementioned water-soluble polymer And prepare the dropping stock solution among the cost embodiment. THFA in the prepared dropping stock solution accounted for 45% by volume of the entire dropping stock solution, and the ratio of the aforementioned water-soluble polymer aqueous solution in the dropping stock solution accounted for 17% by volume of the entire dropping stock solution. The mixing ratio of the aforement...

Embodiment 3

[0218] Will U 3 o 8 5 kg of the powder was dissolved in 3.3 L of 60% by mass nitric acid to prepare a uranyl nitrate solution. To 7.5 L of uranyl nitrate solution, polyvinyl alcohol aqueous solution and tetrahydrofurfuryl alcohol were added as thickeners in proportions of 17 vol % and 45 vol % to the whole dropping stock solution, respectively, to prepare 24 L of dropping stock solution. After 120 minutes, the uranium concentration of the dripping stock solution was 180g / L, the temperature was 12°C, and the viscosity was 56×10 -3 Pa.s (56cP).

[0219] The dripping stock solution prepared as described above is stored in the dripping stock solution storage tank 25 of the ADU particle manufacturing apparatus 1 as the dripping stock solution 42 . This dripping stock solution 42 is sent to the dropping nozzle device 2 having the nozzle 4 through the dripping stock solution delivery path 43 via the stock solution supply pump 46 . Next, the dropping stock solution 42 was dropped ...

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Abstract

The object of the present invention is to provide the following devices: a dripping nozzle device that forms substantially spherical ADU particles, a dripping stock solution recovery device that prepares a homogeneous dripping stock solution, a dripping stock solution supply device that can drop liquid droplets of a uniform volume, and even liquid droplets Droplet surface solidification device that does not deform when it collides with the surface of ammonia solution when dropped, ammonia solution circulation device that can fully turn uranyl nitrate into ADU from the center of the droplet, and ADU with good sphericity The ADU particle manufacturing device for particles, the dripping nozzle device has an exciter that vibrates multiple nozzles at the same time, the dripping stock solution recovery device recovers the bottom fine stock solution in the nozzle and mixes it into the dripping stock solution, and the dripping stock solution supply device has a mechanism for falling The light irradiation mechanism that irradiates the droplet of the original solution with light, the droplet surface curing device sprays ammonia gas toward the drop path of the droplet of the original solution dripped from the nozzle, and the ammonia solution circulation device can make the droplets in the ammonia solution storage tank The ammonium diuranate particle manufacturing device uses the above-mentioned device for ascending flow in the ammonia solution in the interior.

Description

technical field [0001] The present invention relates to a dripping nozzle device, a dripping stock solution recovery device, a dripping stock solution supply device, a droplet surface solidification device, an ammonia solution circulation device, and an ammonium diuranate particle manufacturing device. In more detail, it relates to a dripping nozzle device. Spherical ammonium diuranate particles are formed on the top so that the droplets of the dripping stock solution can be dripped well; the dripping stock solution recovery device can recover the dripping stock solution, so that homogeneous ammonium diuranate without deformation and other problems can be manufactured with a high pass rate Particles; a drip stock solution supply device capable of supplying the drip stock solution to the nozzle so that the drip stock solution containing uranyl nitrate can be dripped from the nozzle with a uniform volume; a liquid drop surface solidification device that solidifies the drop surfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G43/00G21C21/02B01J2/06B05B1/14B05B17/06C01G43/01G21C3/62
CPCB01J2/06B05B1/14B05B17/0607C01G43/00C01G43/01C01P2004/32G21C3/64G21C21/02Y10T137/8158Y02E30/30
Inventor 大久保和俊高桥昌史高山智生西村一久本田真树
Owner NUCLEAR FUEL INDS
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