JPH0352661A - Centrifugal clarifier - Google Patents
Centrifugal clarifierInfo
- Publication number
- JPH0352661A JPH0352661A JP1184813A JP18481389A JPH0352661A JP H0352661 A JPH0352661 A JP H0352661A JP 1184813 A JP1184813 A JP 1184813A JP 18481389 A JP18481389 A JP 18481389A JP H0352661 A JPH0352661 A JP H0352661A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- receiving tank
- distributor
- solution
- discharge port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 claims abstract description 59
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 238000005352 clarification Methods 0.000 claims description 3
- 229910052778 Plutonium Inorganic materials 0.000 abstract description 9
- 229910052770 Uranium Inorganic materials 0.000 abstract description 9
- OYEHPCDNVJXUIW-UHFFFAOYSA-N plutonium atom Chemical compound [Pu] OYEHPCDNVJXUIW-UHFFFAOYSA-N 0.000 abstract description 9
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 2
- 239000006166 lysate Substances 0.000 description 3
- 239000003758 nuclear fuel Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- FGHSTPNOXKDLKU-UHFFFAOYSA-N nitric acid;hydrate Chemical compound O.O[N+]([O-])=O FGHSTPNOXKDLKU-UHFFFAOYSA-N 0.000 description 2
- 238000012958 reprocessing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000002915 spent fuel radioactive waste Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は核燃料再処理施設において用いられる遠心清澄
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a centrifugal clarification device used in a nuclear fuel reprocessing facility.
（従来の技術）
一般に核燃料再処理施設は使用済燃料を硝酸で溶解させ
、その溶解液中からウランとプルトニウムを回収するが
、溶解液の中にはこれらの核燃料物質の他にスラッジが
存在するため、溶解液からウラン及びプルトニウムを抽
出する工程の前段で溶解液中のスラッジを除去する必要
がある。(Conventional technology) Generally, nuclear fuel reprocessing facilities dissolve spent fuel in nitric acid and recover uranium and plutonium from the solution, but in addition to these nuclear fuel materials, sludge is also present in the solution. Therefore, it is necessary to remove sludge from the solution before the step of extracting uranium and plutonium from the solution.
従来、溶解液中のスラッジを除去する手段としては、遠
心力を利用した遠心清澄機が用いられている。この遠心
清澄機は回転ボールを高速回転させて溶解液を清澄液と
スラッジとに遠心分離するものであり、清澄液は遠心清
澄機本体に接続された配管を介して清澄液受槽に貯えら
れ、またスラッジは回転ボールの内壁に堆積し、スラッ
ジ排出操作時に遠心清澄機本体の底部に設けられたスラ
ッジ排出口から配管を介してスラッジ受槽に排出される
構造となっている。Conventionally, a centrifugal clarifier that utilizes centrifugal force has been used as a means for removing sludge in a solution. This centrifugal clarifier rotates a rotating ball at high speed to centrifugally separate the dissolved liquid into a clarified liquid and sludge, and the clarified liquid is stored in a clarified liquid receiving tank via piping connected to the centrifugal clarifier body. Furthermore, the sludge accumulates on the inner wall of the rotating ball, and is discharged from the sludge discharge port provided at the bottom of the centrifugal clarifier body into the sludge receiving tank via piping during the sludge discharge operation.
（発明が解決しようとする課題）
ところで、このような遠心清澄機で溶解液を分離操作す
る場合、一部の溶躬液が回転ボールの内壁に沿って流下
し、遠心清澄機本体の底部に設けられたスラッジ排出口
からスラッジ受槽に排出される可能性がある。このよう
に溶解液がスラッジ受槽に排出されると、溶解液の中に
はウランやプルトニウムが含まれているため、これらの
有用物質がスラッジと共に廃棄物として処理されること
になり、経済上好ましくなかった。(Problem to be Solved by the Invention) By the way, when a lysate is separated using such a centrifugal clarifier, some of the lysate flows down along the inner wall of the rotating ball and reaches the bottom of the centrifugal clarifier. There is a possibility that the sludge will be discharged from the provided sludge discharge port to the sludge receiving tank. When the dissolved solution is discharged into the sludge receiving tank in this way, since the dissolved solution contains uranium and plutonium, these useful substances are disposed of as waste along with the sludge, which is economically undesirable. There wasn't.
本発明はこのような事情に鑑みてなされたもので、溶解
液中に含まれるウラン及びプルトニウムがスラッジ受槽
に排出され、廃棄物として処理されることのない遠心清
澄装置を提供することを目的とする。The present invention was made in view of the above circumstances, and an object of the present invention is to provide a centrifugal clarifier in which uranium and plutonium contained in the solution are discharged into a sludge receiving tank and are not disposed of as waste. do.
［発明の構成］
（課題を解決するための手段）
上記目的を達戊するために本発明は、底部にスラッジ排
出口を有し回転ボールの回転力により溶解液を清澄液と
スラッジとに遠心分離する遠心清澄機と、この遠心清澄
機に配管を介して接続され前記清澄液を貯える清澄戒受
槽と、前記遠心清澄機のスラッジ排出口に配管を介して
接続され切換え可能な２つの流路を有する分配器と、こ
の分配器の一方の流路に配管を介して接続されたスラッ
ジ受槽と、前記分配器の他方の流路に配管を介して接続
された溶解液受槽とを具備したものである。[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention has a sludge discharge port at the bottom and centrifuges the dissolved liquid into a clear liquid and a sludge by the rotational force of a rotating ball. A centrifugal clarifier that separates, a clarification tank that is connected to the centrifugal clarifier via piping and stores the clarified liquid, and two switchable channels that are connected to the sludge discharge port of the centrifugal clarifier via piping. a sludge receiver connected to one flow path of the distributor via piping, and a solution receiver tank connected to the other flow path of the distributor via piping. It is.
（作 用）
本発明では遠心清澄機のスラッジ排出口に配管を介して
接続される分配器が切換え可能な２つの流路を持つため
、分配器の一方の流路にスラッジ受槽を接続し、他方の
流路に溶解液受槽を接続することにより、スラッジ排出
口から排出された溶解液を溶解演受槽に戻すことができ
る。従って、一部の溶解液が回転ボールの下部開口から
漏洩してもスラッジ受槽に排出されることがなく、溶解
液中に含まれるウラン及びプルトニウムの流出を防止で
きる。(Function) In the present invention, since the distributor connected to the sludge discharge port of the centrifugal clarifier via piping has two switchable flow paths, a sludge receiving tank is connected to one flow path of the distributor, By connecting a solution receiving tank to the other channel, the solution discharged from the sludge discharge port can be returned to the solution receiving tank. Therefore, even if some of the solution leaks from the lower opening of the rotating ball, it will not be discharged into the sludge receiving tank, and the uranium and plutonium contained in the solution can be prevented from flowing out.
（実施例）
以下、第１図〜第３図を参照して本発明の一実施例を説
明する。(Example) Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 3.
第１図は本発明による遠心清澄装置の概略構成を示す図
であり、溶解液受ｔｌ！ｙ１に貯えられた溶解液は溶解
液供給ポット２を介して遠心清澄機３の回転ボール４の
内側に設けられた溶解液噴出ノズル５に供給され、この
溶解液噴出ノズル５から回転ボール４の内壁に向けて噴
出されるようになっている。このとき、回転ボール４は
モータ６により高速で回転しており、溶解液噴出ノズル
５から噴出した溶解液は回転ボール４の回転力により清
澄液とスラッジとに遠心分離され、清澄液は矢印で示す
ように回転ボール４の上部開口から回転ボール４の外壁
に沿って流下し、遠心清澄機３の底部に接続された配管
７を介して清澄液受槽８に貯えられるようになっている
。FIG. 1 is a diagram showing a schematic configuration of a centrifugal clarifying device according to the present invention, and shows the lysate receiving tl! The solution stored in y1 is supplied via the solution supply pot 2 to the solution jetting nozzle 5 provided inside the rotating ball 4 of the centrifugal clarifyer 3, and from this solution jetting nozzle 5, the solution is supplied to the rotating ball 4. It is designed to be ejected towards the inner wall. At this time, the rotating ball 4 is being rotated at high speed by the motor 6, and the solution ejected from the solution jetting nozzle 5 is centrifuged into clear liquid and sludge by the rotational force of the rotating ball 4, and the clear liquid is indicated by the arrow. As shown, the liquid flows down from the upper opening of the rotating ball 4 along the outer wall of the rotating ball 4, and is stored in a clarified liquid receiving tank 8 via a pipe 7 connected to the bottom of the centrifugal clarifier 3.
一方、スラッジは回転ボール４の内壁に堆積し、スラッ
ジ排出操作時に高圧スプレーノズル９から噴出される硝
酸水等により回転ボール４の内壁に沿って流下し、遠心
清澄機３の底部に設けられたスラッジ排出口１０から排
出されるようになっている。このスラッジ排出口１０に
は配管１１を介して分配器１２が接続されており、スラ
ッジ排出口１０から排出されたスラッジは分配器１２に
流人するようになっている。この分配器１２は第２図及
び第３図に示すように回転ハンドル１３により切換え操
作される第１流路１４と第２流路１５を有し、第１流路
１４の出口には配管１６を介してスラッジ受槽１７が、
第２流路１５の出口には配管１８を介して溶解液受槽１
がそれぞれ接続されている。On the other hand, the sludge accumulates on the inner wall of the rotating ball 4 and flows down along the inner wall of the rotating ball 4 due to nitric acid water etc. sprayed from the high pressure spray nozzle 9 during the sludge discharge operation, and the sludge is deposited on the inner wall of the rotating ball 4, and flows down along the inner wall of the rotating ball 4 due to nitric acid water etc. spouted from the high pressure spray nozzle 9 during the sludge discharge operation. The sludge is discharged from the sludge discharge port 10. A distributor 12 is connected to the sludge discharge port 10 via a pipe 11, and the sludge discharged from the sludge discharge port 10 flows into the distributor 12. As shown in FIGS. 2 and 3, this distributor 12 has a first flow path 14 and a second flow path 15 which are switched by a rotary handle 13, and a pipe 16 is provided at the outlet of the first flow path 14. The sludge receiving tank 17 is
A solution receiving tank 1 is connected to the outlet of the second flow path 15 via a pipe 18.
are connected to each other.
従って、スラッジの排出操作時には分配器１２の出口側
をスラッジ受槽１７側に切換えておくことにより、スラ
ッジ排出口１０から排出されたスラッジは第２図（ａ）
に示すように分配器１２の第１流路１３に流入し、この
第１流路１３の出口から配管１６を介してスラッジ受槽
１７に排出される。Therefore, by switching the outlet side of the distributor 12 to the sludge receiving tank 17 side during the sludge discharge operation, the sludge discharged from the sludge discharge port 10 is as shown in FIG. 2(a).
As shown in the figure, the sludge flows into the first flow path 13 of the distributor 12 and is discharged from the outlet of the first flow path 13 to the sludge receiving tank 17 via the piping 16.
また、溶解液の分離操作時には分配器１２の出口側を溶
解液受槽１側に切換えておくことにより、回転ボール４
の下部開口から漏洩した溶解岐はスラッジ排出口１０お
よび配管１１を通って分配器１２の第２流路１５に流入
し、この第２流路１５の出口から配管１８を介して溶解
峡受槽１に排出される。従って、本実施例では溶解液の
分離操作中に回転ボール４の下部開口から溶解液が漏洩
してもスラッジ受槽１７に排出されることがなく、溶解
液中に含まれるウラン及びプルトニウムの流出を防止で
きる。In addition, by switching the outlet side of the distributor 12 to the solution receiving tank 1 side during the separation operation of the solution, the rotary ball 4
The melted water leaking from the lower opening of the sludge discharge port 10 and the pipe 11 flows into the second flow path 15 of the distributor 12, and from the outlet of this second flow path 15 via the pipe 18, it flows into the melting tank 1. is discharged. Therefore, in this embodiment, even if the solution leaks from the lower opening of the rotating ball 4 during the solution separation operation, it will not be discharged into the sludge receiving tank 17, and the uranium and plutonium contained in the solution will not leak out. It can be prevented.
［発明の効果コ
以上説明したように本発明は、底部にスラッジ排出口を
有し回転ボールの回転力により溶解液を清澄液とスラッ
ジとに遠心分離する遠心清澄機と、この遠心清澄機でス
ラッジと分離された清澄岐を貯える清澄液受樽と、前記
遠心清澄機のスラッジ排出口に配管を介して接続され切
換え可能な２つの流路を有する分配器と、この分配器の
一方の流路に配管を介して接続されたスラッジ受槽と、
前記分配器の他方の流路に配管を介して接続された溶解
戚受槽とを具備したものである。[Effects of the Invention] As explained above, the present invention provides a centrifugal clarifier that has a sludge discharge port at the bottom and centrifugally separates a dissolved solution into a clear liquid and a sludge by the rotational force of a rotating ball, and a centrifugal clarifier that uses this centrifugal clarifier. a clarified liquid receiving barrel for storing clarified water separated from sludge, a distributor connected to the sludge discharge port of the centrifugal clarifier via piping and having two switchable flow paths, and one flow of the distributor. A sludge receiving tank connected to the road via piping,
The dissolving liquid receiving tank is connected to the other flow path of the distributor via piping.
従って、溶解液の分離操作中にスラッジ排出口から溶解
肢が漏洩しても溶解液を溶解液受槽に戻すことができ、
溶解液中に含まれるウラン及びプルトニウムがスラッジ
受槽に排出されて廃棄物として処理されることがなく、
溶解液中に含まれるウラン及びプルトニウムの流出を防
止できる。Therefore, even if the dissolving limb leaks from the sludge discharge port during the dissolving liquid separation operation, the dissolving liquid can be returned to the dissolving liquid receiving tank.
The uranium and plutonium contained in the solution are not discharged into the sludge receiving tank and treated as waste.
It is possible to prevent leakage of uranium and plutonium contained in the solution.
第１国ないし第３図は本発明の一実施例を示し、第１図
は遠心清澄装置の概略構或図、第２図は分配器の概略断
面図、第３図はその平面図である。
１・・・溶解液受槽、２・・・溶解液供給ポット、３・
・・遠心清澄機、４・・・回転ボール、５・・・溶解液
噴出ノズル、６・・・モータ、７・・・配管、８・・・
／ｉ１澄液受漕、９・・・高圧スプレーノズル、１０・
・・スラッジ排出口、１１・・・配管、１２・・・分配
器、１３・・・回転ハンドル、１４・・・第１流路、１
５・・・第２流路、１６・・・配管、１７・・・スラッ
ジ受槽、１８・・・配管。Figures 1 to 3 show an embodiment of the present invention, in which Figure 1 is a schematic diagram of a centrifugal clarifying device, Figure 2 is a schematic sectional view of a distributor, and Figure 3 is a plan view thereof. . 1...Dissolution liquid receiving tank, 2...Dissolution liquid supply pot, 3.
...Centrifugal clarifier, 4...Rotating ball, 5...Solution liquid jet nozzle, 6...Motor, 7...Piping, 8...
/i1 Clear liquid receiving tank, 9... High pressure spray nozzle, 10.
...Sludge discharge port, 11...Piping, 12...Distributor, 13...Rotary handle, 14...First flow path, 1
5... Second flow path, 16... Piping, 17... Sludge receiving tank, 18... Piping.
Claims (1)
溶解液を清澄液とスラッジとに遠心分離する遠心清澄機
と、この遠心清澄機に配管を介して接続され前記清澄液
を貯える清澄液受槽と、前記遠心清澄機のスラッジ排出
口に配管を介して接続され切換え可能な２つの流路を有
する分配器と、この分配器の一方の流路に配管を介して
接続されたスラッジ受槽と、前記分配器の他方の流路に
配管を介して接続された溶解液受槽とを具備したことを
特徴とする遠心清澄装置。A centrifugal clarifier that has a sludge discharge port at the bottom and centrifugally separates the dissolved liquid into a clarified liquid and sludge by the rotational force of a rotating ball, and a clarified liquid receiver that is connected to the centrifugal clarifier via piping and stores the clarified liquid. a distributor connected to the sludge discharge port of the centrifugal clarifier via piping and having two switchable flow paths; and a sludge receiving tank connected to one flow path of the distributor via piping; A centrifugal clarification device comprising a solution receiving tank connected to the other flow path of the distributor via piping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1184813A JPH0352661A (en) | 1989-07-19 | 1989-07-19 | Centrifugal clarifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1184813A JPH0352661A (en) | 1989-07-19 | 1989-07-19 | Centrifugal clarifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0352661A true JPH0352661A (en) | 1991-03-06 |
Family
ID=16159739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1184813A Pending JPH0352661A (en) | 1989-07-19 | 1989-07-19 | Centrifugal clarifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0352661A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012163425A (en) * | 2011-02-07 | 2012-08-30 | Mitsubishi Heavy Ind Ltd | Treatment method and treatment device of plutonium-containing waste liquid |
-
1989
- 1989-07-19 JP JP1184813A patent/JPH0352661A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012163425A (en) * | 2011-02-07 | 2012-08-30 | Mitsubishi Heavy Ind Ltd | Treatment method and treatment device of plutonium-containing waste liquid |
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