JPS5841399A - Cleaning of matter polluted by radioactivity - Google Patents
Cleaning of matter polluted by radioactivityInfo
- Publication number
- JPS5841399A JPS5841399A JP56140215A JP14021581A JPS5841399A JP S5841399 A JPS5841399 A JP S5841399A JP 56140215 A JP56140215 A JP 56140215A JP 14021581 A JP14021581 A JP 14021581A JP S5841399 A JPS5841399 A JP S5841399A
- Authority
- JP
- Japan
- Prior art keywords
- cleaning
- solvent
- tank
- liquid
- radioactivity
- 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
- 238000004140 cleaning Methods 0.000 title claims description 27
- 238000000034 method Methods 0.000 claims description 16
- 239000002904 solvent Substances 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 239000000356 contaminant Substances 0.000 claims description 12
- 230000002285 radioactive effect Effects 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000011109 contamination Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 15
- 238000005108 dry cleaning Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- 244000124853 Perilla frutescens Species 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 241000779819 Syncarpia glomulifera Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000001739 pinus spp. Substances 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 229950011008 tetrachloroethylene Drugs 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229940036248 turpentine Drugs 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、原子力発電所等に於いて、放射性物質によυ
汚染された衣服や保安用品等の放射能汚染物を洗浄する
方法に関する。[Detailed Description of the Invention] The present invention provides a method for using radioactive materials in nuclear power plants, etc.
Concerns methods for cleaning radioactively contaminated items such as contaminated clothing and safety supplies.
従来上記の放射能汚染物は、水洗浄にてその汚染液を海
に排出していたため、これが社会的な問題となっていた
。一方ドライクリーニング洗浄をおこなうとすれば、そ
の洗浄溶剤は一般ニ、ノチレンクロライド、パークロル
エチレン、ミネラルターペン等であって、これまた塩素
（クロル）等の別途の毒性を有するものであるため、無
公害を希望する点からは、必ずしも好ましいものではな
かった。Conventionally, the above-mentioned radioactive contaminants were washed with water and the contaminated liquid was discharged into the sea, which has become a social problem. On the other hand, if dry cleaning is to be carried out, the cleaning solvent used is general dichloromethane, notylene chloride, perchlorethylene, mineral turpentine, etc., which also have additional toxicity such as chlorine (chlor). This was not necessarily desirable from the perspective of hoping for no pollution.
本発明は成上の事情に鑑み、無公害の洗浄溶剤を使用し
、クローズドシステムにて放射能汚染物を洗浄する方法
を提供せんとするものである。In view of the above circumstances, the present invention aims to provide a method for cleaning radioactive contaminants in a closed system using a non-polluting cleaning solvent.
一般に吸着現象を理論的に考察すれば、気槙又は液相中
の物質が、その相と接触する場合には、液相又は固相の
他の相との界面に於いて、相の内部と異なる濃度を保っ
て平衡に達するものである。従って本発明の場合は、こ
の気相又は液相を放射能汚染物の洗浄溶剤として、卑素
化合物からなるフレオン系ドライクリーニング洗浄液を
、また固相として活性炭を利用し、放射能汚染物を弗素
系ノ・ロゲン化合物による吸脱着にて洗浄せんとするも
のである。Generally speaking, when adsorption phenomena are considered theoretically, when a substance in the gaseous or liquid phase comes into contact with that phase, at the interface with other phases of the liquid or solid phase, the interior of the phase and the Equilibrium is reached by maintaining different concentrations. Therefore, in the case of the present invention, this gas phase or liquid phase is used as a cleaning solvent for radioactive contaminants, and a Freon-based dry cleaning cleaning solution consisting of a base compound is used, and activated carbon is used as a solid phase to clean radioactive contaminants. The purpose is to clean by adsorption and desorption by rogen compounds.
本発明の洗浄方法で好捷しいフレオン系ドライクリーニ
ング洗浄液としては、１１２−トリクルロー１２２−ト
リフルオロエタンである。A preferred Freon-based dry cleaning cleaning solution for the cleaning method of the present invention is 112-trichloride-122-trifluoroethane.
■それは沸点が７０℃前後であるだめ、ドライクリーニ
ング用洗濯機の運転温度に近く、そのため取シ扱いが容
易で、溶剤回収によるリサイクリングが可能であるため
、完全クローズドシステムとすることができる。■現在
一般に使用されているドライクリーニング洗浄液の如き
塩素系等の毒性がなく、化学的にも安定で、金属を腐亀
することもない。■それ自体抽出力があるために洗浄力
が大で、生地を傷めたり、柄を変褪色させることもない
、等の特長を有するものである。■It has a boiling point of around 70°C, which is close to the operating temperature of dry cleaning washing machines, making it easy to handle and recycling by recovering the solvent, making it possible to create a completely closed system. ■It does not have the toxicity of chlorine and other chemicals like the dry cleaning liquids commonly used today, is chemically stable, and does not corrode metals. ■Because it has extraction power, it has great cleaning power, and has features such as not damaging fabrics or causing discoloration of patterns.
次に本発明の一実施例を図面に基いて説明する。第１図
は、本発明の方法による構成の要部を示す工程図、第２
図は同工程の操作時限を示す線図である。Next, one embodiment of the present invention will be described based on the drawings. FIG. 1 is a process diagram showing the main parts of the configuration according to the method of the present invention, and FIG.
The figure is a diagram showing the operation time limit of the same process.
放射能汚染物は、ｆｉｌの回転式シソ／ヤードラムに投
入されて密閉される。洗浄液として使用される番素加合
物からなる溶剤である１、１゜２−トリクロロ−＋、２
．２−トリンルオロエタンは、夕／り（２）（２ｒ（２
ｆに投入されている。The radioactive contaminants are placed in a rotary shiso/yard drum of fil and sealed. 1,1゜2-trichloro-+,2, which is a solvent consisting of an additive used as a cleaning solution.
．． 2-Tolynefluoroethane is di/ri(2)(2r(2
It is put into f.
タンク＋２） （２ｆに投入されている洗浄液は、一旦
洗浄をすませた低濃度汚染液と極低濃度汚染液であシ、
タンク（２ｆに投入されている洗浄液は新液で、洗浄工
程は上記３液による６回の洗浄を行うものであり、その
洗浄、脱液の時間的経緯は第２図の通りである。しかも
タンク（２丁の極低濃度汚染液は洗浄後タンク（２）に
、またタンク（２ｆ′の新液は洗浄後タンク（２）に投
入されて、洗浄工程は行われる。Tank + 2) (The cleaning liquid put into 2F is a low concentration contaminated liquid that has been cleaned once and an extremely low concentration contaminated liquid,
The cleaning liquid put into the tank (2F) is a new liquid, and the cleaning process involves six cleanings using the three liquids mentioned above. The cleaning process is carried out by putting the very low concentration contaminated liquid in the two tanks (2 f') into the tank (2) after cleaning, and the new liquid in the tank (2f') into the tank (2) after cleaning.
そしてタンク（２）の低濃度汚染液は洗浄した後高濃度
の汚染液となシ、移送夕／り（３）から蒸溜装置（４）
へと、汚染した溶剤は蒸溜の工程に移送される。蒸溜装
置（４）にはスチーム管＋５１が往復配管されており、
スチームによる間接加熱で高濃度汚染液の溶剤分は蒸発
して、コンデン−ｙ −（６）（６どへと上昇する。After washing the low-concentration contaminated liquid in the tank (2), the high-concentration contaminated liquid is transferred from the tank (3) to the distillation device (4).
Then, the contaminated solvent is transferred to the distillation process. A steam pipe +51 is reciprocated in the distillation device (4),
By indirect heating with steam, the solvent in the highly concentrated contaminated liquid evaporates and rises to condensate-y-(6).
コンデンサー＋ｓ＋ ＋６１では、冷却水で循環冷却す
ることにより、蒸発溶剤は液化された後、次の分離器（
７１（７１’へと連結されている。分離器＋７１ ＋７
１’では、上澄み水分がエアータンク（８）へ排出され
、一方精製された再生新液フレオン溶剤は、前述のタン
ク（２丁に投入されて、最後の濯ぎ洗浄に使用されるこ
とになる。In the condenser +s+ +61, the evaporated solvent is liquefied by circulating cooling with cooling water, and then transferred to the next separator (
71 (connected to 71'. Separator +71 +7
1', the supernatant water is discharged to the air tank (8), while the purified fresh regenerated Freon solvent is put into the aforementioned tanks (2 tanks) and will be used for the final rinsing.
この間、ワッシャードラム（１）で洗浄した放射能汚染
物を脱液して、充分に洗浄液を振り切って放射能汚染物
に含まれている溶剤分は、低温の除漏された空気を当て
て、ガスにてカーボンタンク＋９＋ ＋９１のいずれか
一方に導かれて吸着される。またカーボンタンク（９１
ｆ９）’には、エアータンク（８）、及ヒタンクｆ２］
［２１（２ｆ（３Ｌ！： モ連結すｉチオり、これらの
タンクから排出されるエアー中に含まれている蒸発溶剤
も、活性炭で吸着されることになる。During this time, the radioactive contaminants washed with the washer drum (1) are deliquified, the cleaning liquid is thoroughly shaken off, and the solvent contained in the radioactive contaminants is removed by applying low-temperature, leaked air. The gas is guided to either one of the carbon tanks +9+ +91 and adsorbed. Also carbon tank (91
f9)' has an air tank (8), and a tank f2]
[21(2f(3L!): MO connection) The evaporated solvent contained in the air discharged from these tanks will also be adsorbed by the activated carbon.
このカーボンタンク＋９＋ ＋９どけ、下部に生蒸気ａ
印を吹き込んで、活性炭に吸着した溶剤成分を蒸発させ
てコンデンサー（６１＋６１’へ導入・液化させてリサ
イクルするように、交互に運転させるため二台が並設さ
れている。Remove this carbon tank +9+ +9, live steam a at the bottom
Two units are installed in parallel to operate alternately so that the solvent components adsorbed on the activated carbon are evaporated and introduced into the condenser (61+61') where they are liquefied and recycled.
またスチームヒーター０１）は、外気０２をスチームに
よって加熱し、この加熱空気をワン／ヤードラム（１）
内の放射能汚染物の乾燥、活性炭の乾燥、スチーム脱着
の乾燥用に利用している。In addition, the steam heater 01) heats the outside air 02 with steam, and converts this heated air into one/yard ram (1).
It is used for drying radioactive contaminants inside the facility, drying activated carbon, and drying steam desorption.
以上の操作の一例は、第２図の如きタイマー経過による
自動制御にて連続運転される。また全ての機構は、安全
且つ確実に運転されるよう精度の高い液温サーモスタッ
］・、水圧、蒸気圧、空気圧、ブロアー圧等の各安全装
置も組み込まれている。An example of the above operation is performed continuously under automatic control based on the passage of a timer as shown in FIG. All mechanisms are also equipped with safety devices such as a highly accurate liquid temperature thermostat, water pressure, steam pressure, air pressure, and blower pressure to ensure safe and reliable operation.
本発明の洗浄方法は上記実施例の如く、放射能汚染物を
華素化合物からなる溶剤で洗浄し、活性炭にて蒸発成分
を吸着し、完全クローズトンステムで洗浄を行うもので
ある。The cleaning method of the present invention is similar to the above embodiment, in which radioactive contaminants are cleaned with a solvent made of a fluorine compound, evaporated components are adsorbed with activated carbon, and cleaning is performed with a complete closed system.
そのため本発明の方法は、放射能の吸脱着がなされ、し
かも放射能が外部へ放出されることはなく、毒性もなく
、また被洗浄物を傷めることのない有用且つ実用的な発
明である。Therefore, the method of the present invention is a useful and practical invention that adsorbs and desorbs radioactivity, does not release radioactivity to the outside, is not toxic, and does not damage the objects to be cleaned.
第１図は本発明の方法による構成の要部を示す工程図、
第２図は同工程の操作時限を示す線図である。
図中： （旧・・洗浄工程に使用される回転式ワラ／ヤ
ードラム、［２） ｔｚ＋’ｔ２ｍ・・・今素化合物か
らなる洗出願人 竹 １） 年 男FIG. 1 is a process diagram showing the main parts of the structure according to the method of the present invention;
FIG. 2 is a diagram showing the operation time limit of the same process. In the figure: (Old...Rotating straw/yard drum used in the cleaning process, [2) tz+'t2m...Cleaning made from a chemical compound Applicant Bamboo 1) Year Male
Claims (1)
化合物からなる溶剤にて洗浄する工程と、該洗浄汚染溶
剤を蒸溜する工程と、該蒸溜した溶剤蒸気を活性炭に吸
着する工程とを、クローズトンステムにしたことを特徴
とする放射能汚染物の洗浄方法。L. When cleaning radioactive contaminants, the steps of cleaning the contaminants with a solvent made of homogeneous compounds, distilling the cleaning contamination solvent, and adsorbing the distilled solvent vapor onto activated carbon are carried out. , a method for cleaning radioactive contaminants, characterized in that a close-toned stem is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56140215A JPS5841399A (en) | 1981-09-04 | 1981-09-04 | Cleaning of matter polluted by radioactivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56140215A JPS5841399A (en) | 1981-09-04 | 1981-09-04 | Cleaning of matter polluted by radioactivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5841399A true JPS5841399A (en) | 1983-03-10 |
Family
ID=15263591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56140215A Pending JPS5841399A (en) | 1981-09-04 | 1981-09-04 | Cleaning of matter polluted by radioactivity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5841399A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5110032A (en) * | 1974-07-11 | 1976-01-27 | Iseki Agricult Mach | JIDATSUGATAKONBAINNIOKERU HOJOZASEKI |
-
1981
- 1981-09-04 JP JP56140215A patent/JPS5841399A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5110032A (en) * | 1974-07-11 | 1976-01-27 | Iseki Agricult Mach | JIDATSUGATAKONBAINNIOKERU HOJOZASEKI |
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