JPH0454499A - Waste liquid clad reduction processing system - Google Patents
Waste liquid clad reduction processing systemInfo
- Publication number
- JPH0454499A JPH0454499A JP16290590A JP16290590A JPH0454499A JP H0454499 A JPH0454499 A JP H0454499A JP 16290590 A JP16290590 A JP 16290590A JP 16290590 A JP16290590 A JP 16290590A JP H0454499 A JPH0454499 A JP H0454499A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- water
- cladding
- crud
- waste liquid
- 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
- 239000007788 liquid Substances 0.000 title claims description 27
- 239000002699 waste material Substances 0.000 title claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000428 dust Substances 0.000 claims abstract description 24
- 230000002285 radioactive effect Effects 0.000 claims abstract description 17
- 238000004378 air conditioning Methods 0.000 claims abstract description 10
- 239000003595 mist Substances 0.000 claims abstract description 5
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 claims description 23
- 238000005253 cladding Methods 0.000 claims description 14
- 238000009423 ventilation Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000011109 contamination Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 20
- 239000000498 cooling water Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000010612 desalination reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002901 radioactive waste Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Separation Of Particles Using Liquids (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は原子力発電所における放射性廃棄物処理設備、
特に廃液クラッド減容機出口から排出される廃棄ガス中
に含まれる放射性ダストを除去し、その換気空調系への
放出を防止する廃液クラッド減容処理系に係る。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to radioactive waste treatment equipment in a nuclear power plant,
In particular, the present invention relates to a waste liquid crud volume reduction treatment system that removes radioactive dust contained in waste gas discharged from the waste liquid crud volume reduction machine outlet and prevents the radioactive dust from being released into the ventilation air conditioning system.
（従来の技術）
原子力発電所の放射性廃棄物処理設備には、廃液クラッ
ド減容処理系が含まれている。この廃液クラッド減容処
理系は、発電所内作業員の着衣等の洗濯廃液を減容処理
してペースト化する。同時に前記減容処理時に廃液の乾
燥に使用され、洗濯廃液の蒸気を含む乾燥気体を冷却し
、前記蒸気を復水させこれに脱塩処理を施して洗濯に再
使用するようにしている。(Prior Art) The radioactive waste treatment equipment of a nuclear power plant includes a waste liquid crud volume reduction treatment system. This waste liquid crud volume reduction treatment system reduces the volume of laundry waste liquid, such as clothes of workers in the power plant, and converts it into a paste. At the same time, it is used to dry the waste liquid during the volume reduction process, and the drying gas containing the vapor of the washing waste liquid is cooled, and the vapor is condensed, subjected to desalination treatment, and reused for washing.
第２図は従来の廃液クラッド減容処理系処理系統の系統
図である。この図において、洗濯廃液はクラッドセパレ
ータ１に送られる。洗濯廃液はここでクラッドと液体と
に分離される。クラッドはクラッド受タンク２に排呂さ
れ、−旦ここに貯蔵される、液体は図示されていない別
系統の脱塩処理系で処理され補給水と同等の水質まで浄
化され、放射性廃棄物処理系統で再使用される。FIG. 2 is a system diagram of a conventional waste liquid crud volume reduction treatment system. In this figure, washing waste liquid is sent to a clad separator 1. The laundry waste liquid is separated into cladding and liquid here. The crud is discharged into the crud receiving tank 2, and the liquid is then stored there.The liquid is treated in a separate desalination treatment system (not shown) and purified to the same water quality as make-up water, and then transferred to the radioactive waste treatment system. be reused.
−旦クラッド受タンク２に受容されたクラッドは、クラ
ッド移送ポンプ３によってクラッド減容機４に送られる
。このクラッド減容機４には所内ボイラから蒸気が供給
され、クラッド中に残留する廃液の乾燥除去がなされる
。これによりクラッドの固形分はペースト状の減容物と
なり、減容物排出缶５中に落下する。前記減容物が所定
量に達したところでこれをドラム缶詰とし、保管場所に
移送する。- The crud received in the crud receiving tank 2 is sent to the crud volume reduction machine 4 by the crud transfer pump 3. Steam is supplied from an in-house boiler to this clad volume reducing machine 4, and the waste liquid remaining in the clad is removed by drying. As a result, the solid content of the cladding becomes a paste-like reduced volume material and falls into the reduced volume material discharge can 5. When the volume-reduced product reaches a predetermined amount, it is canned in drums and transported to a storage location.
一方、クラッド減容機４の出口の乾燥気体すなわち供給
された蒸気中にクラッド中の液分の含有された気体は、
復水器６に送られ冷却凝縮されて復水され、廃液タンク
７にブローされる。この復水は前記の別系統の脱塩処理
系に送られ、浄化して再使用される。On the other hand, the dry gas at the outlet of the cladding volume reducer 4, that is, the gas containing the liquid in the cladding in the supplied steam,
The liquid is sent to a condenser 6 where it is cooled and condensed, and then blown into a waste liquid tank 7. This condensate is sent to the separate desalination treatment system mentioned above, purified and reused.
また、復水器６において凝縮されることなくこれを通過
する気体は、下流のデミスタ８においてそのミスト分を
除去され、ロータリブロワ９により換気空調系１０に送
られる。Furthermore, the gas that passes through the condenser 6 without being condensed has its mist removed in the demister 8 downstream, and is sent to the ventilation air conditioning system 10 by the rotary blower 9.
なお、図中１１は復水器６の冷却水供給管、１２は冷却
水排出管をそれぞれ示している。In addition, in the figure, 11 indicates a cooling water supply pipe of the condenser 6, and 12 indicates a cooling water discharge pipe.
（発明が解決しようとする課題）
上記構成の従来の廃液クラッド減容処理系には次のよう
な問題があった。すなわち、クラッド減容機４の運転中
に、復水器６を通過する気体に含まれる放射性のダスト
が換気空調系に放出されるため、環境が汚染されるおそ
れがあった。(Problems to be Solved by the Invention) The conventional waste liquid crud volume reduction treatment system having the above configuration has the following problems. That is, during the operation of the cladding volume reduction machine 4, radioactive dust contained in the gas passing through the condenser 6 is released into the ventilation air conditioning system, which may contaminate the environment.
本発明は上記の事情に基づきなされたもので、クラッド
の減容処理に際して換気空調系に放射性ダストを放出す
るおそれのない廃液クラッド減容処理系を提供すること
を目的としている。The present invention has been made based on the above-mentioned circumstances, and an object of the present invention is to provide a waste liquid crud volume reduction treatment system that is free from the risk of releasing radioactive dust into a ventilation air conditioning system during the crud volume reduction treatment.
［発明の構成］
（ｍ１題を解決するための手段）
本発明の廃液クラッド減容処理系は、クラッドセパレー
タと、クラッド受タンクと、このクラッド受タンクから
クラッドを供給され蒸気による加熱下にクラッドを減容
する減容機と、前記減容されたクラッドを受容する減容
物排出缶と、前記減容機において使用された蒸気を復水
させる復水器と、この復水器を通過した非凝縮性のガス
を圧送するロータリブロワと、前記ガス中のミストを除
去するデミスタとを有し、前記デミスタを経由した前記
ガスを換気空調系に放出するようにしたものにおいて、
前記ロータリブロワおよび前記デミスタ間に前記ロータ
リブロワの圧送するガス中の放射性ダストを水中に溶解
させるダスト除去装置を設けたことを特徴とする。[Structure of the Invention] (Means for Solving Problem M1) The waste liquid crud volume reduction treatment system of the present invention includes a crud separator, a crud receiving tank, and a crud that is supplied from the crud receiving tank and is heated by steam. a volume reduction machine for reducing the volume of the crud; a volume reduction material discharge can that receives the reduced volume crud; a condenser for condensing the steam used in the volume reduction machine; A rotary blower that pumps non-condensable gas and a demister that removes mist from the gas, the gas passing through the demister being discharged into a ventilation air conditioning system,
A dust removal device is provided between the rotary blower and the demister to dissolve radioactive dust in the gas pumped by the rotary blower into water.
（作用）
上記構成の本発明廃液クラッド減容処理系においては、
復水器を通過した非凝縮性のガスは、ロータリブロワに
よって圧送され、ダスト除去装置の水中に噴出される。(Function) In the waste liquid crud volume reduction treatment system of the present invention having the above configuration,
The non-condensable gas that has passed through the condenser is pumped by a rotary blower and ejected into the water of the dust removal device.
この噴出されたガスは前記ダスト除去装置内の水とよく
混合しながら前記水中を上昇する。この上昇の間に前記
ガス中の放射性ダストは前記水中に溶解され、ガス中の
放射性ダストの除去がなされる。This ejected gas rises in the water while mixing well with the water in the dust removal device. During this rise, the radioactive dust in the gas is dissolved into the water, and the radioactive dust in the gas is removed.
（実施例）
第２図と同一部分には同一符号を付した第１図は本発明
一実施例の系統図である。この図において、ロータリブ
ロワ９は復水器６の近傍に設けられ、デミスタ８はその
下流側に設けられている。(Embodiment) FIG. 1, in which the same parts as in FIG. 2 are given the same reference numerals, is a system diagram of an embodiment of the present invention. In this figure, the rotary blower 9 is provided near the condenser 6, and the demister 8 is provided downstream thereof.
而して、前記両者間にはその詳細を後記説明するダスト
除去装置１３が設けられている。A dust removing device 13, the details of which will be explained later, is provided between the two.
ダスト除去装置１３は水１３ａを収容した筐体１３ｂを
有し、筐体１３ｂ底面にはロータリブロワ９の吐出側に
逆止弁１４．電磁弁１５、仕切弁１６を介して連通ずる
配管１３ｃが開口され、前記筐体１３ｂ内には前記配管
１３ｃと同心のバッファ１７が設けられている。The dust removal device 13 has a housing 13b containing water 13a, and a check valve 14 on the discharge side of the rotary blower 9 on the bottom of the housing 13b. A pipe 13c communicating with each other via a solenoid valve 15 and a gate valve 16 is opened, and a buffer 17 concentric with the pipe 13c is provided in the housing 13b.
なお１図中１８は前記筐体１３ｂ下部に設けられたクラ
ッド受タンク２への戻しドレン弁を示している。Note that 18 in FIG. 1 indicates a return drain valve to the cladding tank 2 provided at the lower part of the housing 13b.
この実施例においては、復水器６を通過した非凝縮性の
ガスは、ロータリブロワ８によって圧送され、逆止弁１
４、電磁弁１５、仕切弁１６を経由して筐体１３ｂ内に
収容した水１３ａ中に噴出される。この噴出されたガス
はバッフル１７によって流れを変えられ、筐体内の水１
３ａとよく混合しながら水１３ａ内を上昇する。この上
昇の間に前記ガス中の放射性ダストは前記水中に溶解さ
れ、ガス中の放射性ダストの除去がなされる。In this embodiment, the non-condensable gas that has passed through the condenser 6 is pumped by a rotary blower 8 and the check valve 1
4. The water is ejected via the electromagnetic valve 15 and the gate valve 16 into the water 13a housed in the housing 13b. The flow of this ejected gas is changed by the baffle 17, and the water inside the housing 1
The water rises in the water 13a while mixing well with the water 13a. During this rise, the radioactive dust in the gas is dissolved into the water, and the radioactive dust in the gas is removed.
上記のようにして放射性ダストが除去されたガスは、デ
ミスタ８においてミストを除去され、換気空調系１０に
放出される。The gas from which radioactive dust has been removed as described above has its mist removed in the demister 8 and is discharged into the ventilation air conditioning system 10.
一方、筐体１３ｂ内の水１３ａは定期的にサンプリング
して分析され、その水質が一定値に達したならばクラッ
ド受タンクへの戻しドレン弁１８を開放し、クラッド受
タンク２に戻し再処理を行う。On the other hand, the water 13a in the housing 13b is periodically sampled and analyzed, and when the water quality reaches a certain value, the return drain valve 18 to the cladding tank is opened, and the water is returned to the cladding tank 2 for reprocessing. I do.
なお、前記電磁弁１５はロータリブロワ８の運転時のみ
開放され、筐体１３ｂ内の水１３ａのロータリブロワ８
側への逆流を防止するものであり、仕切弁１６は本発明
の処理系の停止時には閉鎖され同じく水の逆流を防止す
るものである。The solenoid valve 15 is opened only when the rotary blower 8 is in operation, and the water 13a inside the housing 13b is removed by the rotary blower 8.
The gate valve 16 is closed when the treatment system of the present invention is stopped to prevent water from flowing backward.
上記のように本発明の廃液クラッド減容処理系は、復水
器を通過した非凝縮性ガス中に混在する放射性ダストを
完全に除去しているので、換気空調系に放射性ダストが
放出されることはない。As mentioned above, the waste liquid crud volume reduction treatment system of the present invention completely removes radioactive dust mixed in the non-condensable gas that has passed through the condenser, so radioactive dust is released into the ventilation air conditioning system. Never.
［発明の効果］
上記から明らかなように本発明の廃液クラッド減容処理
系は、非凝縮性ガス中に混在する放射性ダストを水中に
溶解させて除去しているので、換気空調系に放射性ダス
トが放出されることはなく、環境汚染を生じることもな
い。[Effects of the Invention] As is clear from the above, the waste liquid crud volume reduction treatment system of the present invention removes radioactive dust mixed in non-condensable gas by dissolving it in water. is not released and does not cause environmental pollution.
第１図は本発明一実施例の系統図、第２図は従来の廃液
クラッド減容処理系処理系統の系統図である。
１・・・・・・クラッドセパレータ ２・・・・・・ク
ラッド受タンク ３・・・・・・クラッド移送ポンプ
４・・・・・クラッド減容機 ５・・・・・・減容物排
呂缶 ６・・・・・・復水器７・・・・・・廃液受タン
ク ８・・・・・・デミスタ ９・・・・・・ロータリ
ブロワ １０・・・・・・換気空調系 １１・・・・・
冷却水供給管 １２・・・・・・冷却水排出管 １３・
・・・・・ダスチ除去装［１３ａ・・・・・・水 １３
ｂ・・・・・・筐体１３ｃ・・・・・・配管 １４・・
・・・・逆止弁 １５・・・・・・電磁弁 １６・・・
・・・仕切弁 １７・・・・・・バッファ １８・・・
・・・戻しドレン弁FIG. 1 is a system diagram of an embodiment of the present invention, and FIG. 2 is a system diagram of a conventional waste liquid crud volume reduction treatment system. 1... Crud separator 2... Crud receiving tank 3... Crud transfer pump
4... Crud volume reduction machine 5... Volume reduction waste canister 6... Condenser 7... Waste liquid receiving tank 8... Demister 9... Rotary blower 10... Ventilation air conditioning system 11...
Cooling water supply pipe 12... Cooling water discharge pipe 13.
...Dust removal equipment [13a...Water 13
b...Housing 13c...Piping 14...
...Check valve 15...Solenoid valve 16...
...Gate valve 17...Buffer 18...
・・・Return drain valve
Claims (1)
ッド受タンクからクラッドを供給され蒸気による加熱下
にクラッドを減容する減容機と、前記減容されたクラッ
ドを受容する減容物排出缶と、前記減容機において使用
された蒸気を復水させる復水器と、この復水器を通過し
た非凝縮性のガスを圧送するロータリブロワと、前記ガ
ス中のミストを除去するデミスタとを有し、前記デミス
タを経由した前記ガスを換気空調系に放出するようにし
たものにおいて、前記ロータリブロワおよび前記デミス
タ間に前記ロータリブロワの圧送するガス中の放射性ダ
ストを水中に溶解させるダスト除去装置を設けたことを
特徴とする廃液クラッド減容処理系。a cladding separator, a cladding receiving tank, a volume reducing machine that receives cladding from the cladding tank and reduces the volume of the cladding while heating it with steam, a reduced volume discharge can that receives the reduced cladding; It has a condenser that condenses the steam used in the volume reduction machine, a rotary blower that pumps non-condensable gas that has passed through the condenser, and a demister that removes mist from the gas, The gas passing through the demister is discharged into the ventilation air conditioning system, and a dust removal device is provided between the rotary blower and the demister to dissolve radioactive dust in the gas pumped by the rotary blower into water. A waste liquid crud volume reduction treatment system characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16290590A JPH0454499A (en) | 1990-06-22 | 1990-06-22 | Waste liquid clad reduction processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16290590A JPH0454499A (en) | 1990-06-22 | 1990-06-22 | Waste liquid clad reduction processing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0454499A true JPH0454499A (en) | 1992-02-21 |
Family
ID=15763465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16290590A Pending JPH0454499A (en) | 1990-06-22 | 1990-06-22 | Waste liquid clad reduction processing system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454499A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5644203A (en) * | 1992-11-10 | 1997-07-01 | Sanyo Seiki Mfg. Co., Ltd. | Brushless motor speed detector |
| KR100735578B1 (en) * | 2005-05-16 | 2007-07-04 | 김상남 | Brown Gas Auto Drain Demister |
-
1990
- 1990-06-22 JP JP16290590A patent/JPH0454499A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5644203A (en) * | 1992-11-10 | 1997-07-01 | Sanyo Seiki Mfg. Co., Ltd. | Brushless motor speed detector |
| KR100735578B1 (en) * | 2005-05-16 | 2007-07-04 | 김상남 | Brown Gas Auto Drain Demister |
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