JP3483811B2 - Drying equipment for putrefactive waste containing radioactive organic matter - Google Patents
Drying equipment for putrefactive waste containing radioactive organic matterInfo
- Publication number
- JP3483811B2 JP3483811B2 JP28859199A JP28859199A JP3483811B2 JP 3483811 B2 JP3483811 B2 JP 3483811B2 JP 28859199 A JP28859199 A JP 28859199A JP 28859199 A JP28859199 A JP 28859199A JP 3483811 B2 JP3483811 B2 JP 3483811B2
- Authority
- JP
- Japan
- Prior art keywords
- drying
- tank
- water
- radioactive organic
- waste containing
- 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.)
- Expired - Fee Related
Links
Landscapes
- Drying Of Solid Materials (AREA)
- Processing Of Solid Wastes (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、放射性有機物を含
有する腐敗性廃棄物を乾燥処理する装置に係り、特に放
射性有機物の漏洩及び悪臭の発生を防止するようにした
乾燥処理装置に関する。
【０００２】
【従来の技術】ラジオアイソトープを使用した動物実験
における実験動物の廃棄処理に際しては乾燥処理をして
処理センターに運搬される。即ち、搬送中や保管中に廃
棄物が腐敗するのを防止するためである。
【０００３】従来はこのような放射性有機物を含有する
腐敗性廃棄物を的確に乾燥処理する装置として適当なも
のがなく、例えば、通常の解放型の乾燥装置では乾燥処
理に伴う放射性有機物の漏洩や悪臭の発生を防止するこ
とができず、また、乾燥処理温度が低い場合には乾燥時
間が長くなりしかも均一に乾燥せず、乾燥処理温度が高
い場合には部分的に炭化してしまう等の不都合があっ
た。
【０００４】一方、通常の真空ポンプ使用による減圧乾
燥処理装置では、真空オイル中に放射性有機物が入り、
真空オイルの処理が困難となり、また、マイクロ波によ
る真空乾燥処理装置では処理済物の取出し時に放射性有
機物及び悪臭が炉外に出てしまう欠点があった。
【０００５】
【発明が解決しようとする課題】本発明の目的は前記の
ような従来の欠点を解消し、乾燥処理に伴う放射性有機
物の漏洩や悪臭の発生はなく、短時間で均一且つ確実に
乾燥処理することができる放射性有機物を含有する腐敗
性廃棄物の乾燥処理装置を提供することにある。
【０００６】
【課題を解決するための手段】本発明は放射性有機物を
含有する腐敗性廃棄物を乾燥処理する装置であって、遠
赤外線ヒータを加熱源とする減圧乾燥炉と、該乾燥炉を
減圧するための水用エゼクターと、前記減圧乾燥炉と水
用エゼクターとの間に配置され、前記乾燥炉から吸引さ
れる放射性有機物を含有した排ガス、水分等を凝縮捕集
する凝縮捕集槽と、該凝縮捕集槽で捕集された凝縮液を
貯留する凝縮液タンクと、排ガス中の未凝縮の水分を冷
却補修する補助凝縮タンクと、該補助凝縮タンクと前記
水用エゼクターとの間に配置されていて、逆流水を捕集
する逆流防止捕集槽と、前記凝縮捕集槽に冷却水を供給
するための冷却液タンクとを備えていることを特徴とす
る。
【０００７】このように構成することにより、放射性有
機物を含有する腐敗性廃棄物は減圧乾燥炉、即ち、密閉
乾燥炉で乾燥処理されるから、放射性有機物が漏洩した
り悪臭が室外に放出されたりすることがないのは勿論、
減圧下で乾燥処理するため低温で乾燥することが可能と
なる。また、水用エゼクターで減圧しているため吸引さ
れた放射性有機物を含有した水分や排ガス、悪臭成分等
は凝縮捕集槽の水に吸収される。乾燥炉の加熱源として
遠赤外線ヒータを用いているから乾燥時間も短く、均一
に乾燥させることができる。
【０００８】
【発明の実施の形態】本発明に係る放射性有機物を含有
する腐敗性廃棄物の乾燥処理装置の実施例をフローシー
トとして示す図１に基づいて説明する。図において、１
は減圧乾燥炉であって、加熱源として遠赤外線セラミッ
クヒータ２が使用され、減圧は水用エゼクター３によっ
て行われる。４は前記減圧乾燥炉１と水用エゼクター３
との間に配置された凝縮捕集槽であって、前記乾燥炉１
から吸引される放射性排ガスや水分、悪臭成分等５を凝
縮捕集するものである。
【０００９】６は凝縮捕集槽４によって捕集された凝縮
液を貯留する凝縮液タンクであり、凝縮液は凝縮水排出
弁８を介して排出口９から排出される。一方、排ガス中
の未凝縮の水分等は補助凝縮タンク７で冷却捕集されて
前記水用エゼクター３側に吸引される。１０は減圧用圧
力スイッチであって、記号ＰＳで示されている。１１は
圧抜用電磁弁、１２は圧抜弁、１３はシンターメタルで
ある。
【００１０】１４は吸引用電磁弁、１５は逆流水を捕集
する逆流防止捕集槽であって、捕集された逆流水は逆流
水排出弁１６を介して排出される。１７は水用エゼクタ
ー３を構成する吸引用アスピレーターであり、吸引側が
前記逆流水捕集槽に連結される。循環水は循環水給水口
２２から供給され、吸引用水循環ポンプ１８を介して循
環せしめられる。循環水の排出は循環水排出弁２１を介
して循環水排水口２３から排出される。１９は水圧計、
２０はボールタップである。
【００１１】２４は冷凍機２５で冷却された冷却水を前
記凝縮捕集槽４に供給するための冷却液タンクであり、
冷却液用温度調節器２６で温度調節された冷却水を冷却
水循環ポンプ２７を介して前記凝縮捕集槽４内の冷熱変
換パイプ２９（銅管）に供給する。冷熱変換パイプ２９
を通った冷却水は前記補助凝縮捕集タンク７の冷却水と
なり、前記冷却液タンク２４に還水される。冷却液タン
ク２４の冷却液排出に際しては冷却液排出弁２８を介し
て冷却水排出口３０から排出される。なお、図中、３１
は減圧乾燥炉１の閉塞栓、３２は凝縮捕集槽４の閉塞栓
である。
【００１２】前記のように構成された乾燥処理装置で腐
敗性廃棄物、特にラジオアイソトープを使用した動物実
験による実験動物の廃棄物を乾燥処理するに際し、対象
となる廃棄物を減圧乾燥炉１に収容し、水用エゼクタ３
により減圧した状態で遠赤外線ヒータ２により加熱して
乾燥処理する。
【００１３】乾燥処理に伴う排ガス、水分等５は減圧に
伴う吸引作用で凝縮捕集槽４内に入り、凝縮捕集されて
凝縮液タンク６に溜められる。未凝縮の排ガス等は補助
凝縮捕集タンク７で凝縮捕集された後、逆流防止捕集槽
１５に吸入される。該逆流捕集槽１５内の排ガス等は吸
引用アスピレーター１７により吸引され、水処理が行わ
れる。これにより、廃棄物の乾燥処理に伴う排気ガス中
に放射性有機物及び悪臭成分があっても水に吸収され、
悪臭が外部に放散されることはない。
【００１４】
【発明の効果】本発明の放射性有機物を含有する腐敗性
廃棄物の乾燥処理装置によれば、乾燥炉は減圧している
ため低温で乾燥することが可能となると共に、密閉乾燥
炉であることから放射性有機物や悪臭成分が室外に放出
されることはない。また、乾燥炉の減圧は水用エゼクタ
ーで減圧しているため吸引された放射性水分、排ガス、
悪臭成分等は水に吸収され、外部に放散することはな
い。更に、乾燥炉の加熱源として遠赤外線ヒータを用い
ているから乾燥時間も短く、均一に乾燥させることがで
きる等の優れた効果があり、この種放射性有機物を含有
した腐敗性廃棄物の乾燥処理装置として最適である。Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to an apparatus for drying and treating septic waste containing a radioactive organic substance, and more particularly to preventing the radioactive organic substance from leaking and generating an offensive odor. And a drying apparatus. 2. Description of the Related Art In the disposal of experimental animals in animal experiments using radioisotopes, they are dried and transported to a processing center. That is, it is to prevent the waste from spoiling during transportation or storage. [0003] Conventionally, there is no suitable apparatus for properly drying such putrefactive waste containing radioactive organic substances. For example, in an ordinary open-type drying apparatus, leakage of radioactive organic substances due to drying processing or leakage of radioactive organic substances due to drying processing is not possible. It is not possible to prevent the generation of offensive odor, and if the drying temperature is low, the drying time will be long and the drying will not be uniform, and if the drying temperature is high, it will be partially carbonized. There was an inconvenience. On the other hand, in a vacuum drying treatment apparatus using a normal vacuum pump, radioactive organic matter enters vacuum oil,
Vacuum oil processing becomes difficult, and a microwave drying apparatus using microwaves has the drawback that radioactive organic substances and odors are emitted outside the furnace when the processed product is taken out. SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, to prevent the leakage of radioactive organic substances and the generation of offensive odor during the drying treatment, and to ensure uniformity in a short time. An object of the present invention is to provide an apparatus for drying a putrefactive waste containing a radioactive organic substance which can be dried. SUMMARY OF THE INVENTION The present invention relates to an apparatus for drying and treating septic waste containing radioactive organic matter, comprising: a vacuum drying oven using a far-infrared heater as a heating source; A water ejector for depressurizing, and a condensation collecting tank that is disposed between the reduced-pressure drying furnace and the water ejector and that condenses and collects an exhaust gas containing radioactive organic matter sucked from the drying furnace, moisture, and the like. , The condensate collected in the condensation collecting tank is
Cools condensate tank to store and uncondensed water in exhaust gas
An auxiliary condensing tank to be repaired,
It is located between the water ejector and collects backflow water
Supplying cooling water to the backflow prevention collection tank and the condensation collection tank
And a cooling liquid tank for cooling . [0007] With this configuration, the putrefactive waste containing a radioactive organic substance is dried in a reduced-pressure drying oven, that is, a closed drying oven, so that the radioactive organic substance leaks and an odor is released outside the room. Of course not to do
Since the drying treatment is performed under reduced pressure, it is possible to dry at a low temperature. Further, since the pressure is reduced by the water ejector, the water, the exhaust gas, the malodorous component and the like containing the radioactive organic matter sucked are absorbed by the water in the condensation and collection tank. Since a far-infrared heater is used as a heating source of the drying furnace, the drying time is short and uniform drying can be achieved. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an apparatus for drying and treating septic waste containing a radioactive organic substance according to the present invention will be described with reference to FIG. 1 showing a flow sheet. In the figure, 1
Is a vacuum drying oven, in which a far-infrared ceramic heater 2 is used as a heating source, and the pressure is reduced by a water ejector 3. 4 is a vacuum drying oven 1 and a water ejector 3
And the condensing and collecting tank, wherein the drying furnace 1
It condenses and collects radioactive exhaust gas, moisture, malodorous components, and the like 5 sucked from the water. Reference numeral 6 denotes a condensate tank for storing the condensate collected by the condensate collection tank 4, and the condensate is discharged from a discharge port 9 through a condensate discharge valve 8. On the other hand, uncondensed water and the like in the exhaust gas are cooled and collected by the auxiliary condensing tank 7 and sucked into the water ejector 3 side. Reference numeral 10 denotes a pressure reducing switch, which is indicated by a symbol PS. Reference numeral 11 denotes a pressure relief solenoid valve, 12 denotes a pressure relief valve, and 13 denotes a sinter metal. Reference numeral 14 denotes a suction electromagnetic valve, and reference numeral 15 denotes a backflow prevention collection tank for collecting backflow water. The collected backflow water is discharged through a backflow water discharge valve 16. Reference numeral 17 denotes a suction aspirator which constitutes the water ejector 3, and the suction side is connected to the backflow water collecting tank. The circulating water is supplied from a circulating water supply port 22 and circulated through a suction water circulating pump 18. The circulating water is discharged from a circulating water discharge port 23 through a circulating water discharge valve 21. 19 is a water pressure gauge,
20 is a ball tap. Reference numeral 24 denotes a cooling liquid tank for supplying the cooling water cooled by the refrigerator 25 to the condensation collecting tank 4.
The cooling water whose temperature has been adjusted by the cooling liquid temperature controller 26 is supplied to a cooling / heating conversion pipe 29 (copper pipe) in the condensation collecting tank 4 via a cooling water circulation pump 27. Cold / heat conversion pipe 29
The cooling water that has passed becomes cooling water for the auxiliary condensation and collection tank 7 and is returned to the cooling liquid tank 24. When the coolant is discharged from the coolant tank 24, the coolant is discharged from the coolant outlet 30 through the coolant discharge valve 28. In the figure, 31
Denotes a plug for the vacuum drying oven 1, and 32 denotes a plug for the condensation / collection tank 4. When drying the putrefactive waste, particularly the waste of an experimental animal by an animal experiment using a radioisotope, with the drying apparatus configured as described above, the target waste is put into a vacuum drying furnace 1. Housed and ejector for water 3
The drying process is performed by heating with the far-infrared heater 2 while the pressure is reduced. Exhaust gas, water and the like 5 resulting from the drying process enter into the condensation collecting tank 4 by the suction effect caused by the reduced pressure, are condensed and collected, and are stored in the condensed liquid tank 6. Uncondensed exhaust gas and the like are condensed and collected in the auxiliary condensation collecting tank 7 and then sucked into the backflow prevention collecting tank 15. Exhaust gas and the like in the backflow collecting tank 15 are sucked by a suction aspirator 17 and water treatment is performed. As a result, even if there are radioactive organic substances and odorous components in the exhaust gas from the waste drying process, they are absorbed by water,
No stench is released to the outside. According to the apparatus for drying putrefactive waste containing a radioactive organic substance of the present invention, the drying furnace can be dried at a low temperature because the pressure in the drying furnace is reduced, and the closed drying furnace can be used. Therefore, radioactive organic substances and malodorous components are not released outside the room. In addition, since the pressure in the drying oven is reduced by the water ejector, the absorbed radioactive moisture, exhaust gas,
Odorous components and the like are absorbed by water and do not diffuse outside. Furthermore, since a far-infrared heater is used as the heating source of the drying furnace, the drying time is short, and there is an excellent effect such as uniform drying. Most suitable as a device.
【図面の簡単な説明】
【図１】本発明に係る放射性有機物を含有する腐敗性廃
棄物の乾燥処理装置のフローシート図である。
【符号の説明】
１ 減圧乾燥炉
２ 遠赤外線ヒータ
３ 水用エゼクター
４ 凝縮捕集槽
５ 乾燥処理に伴う排ガス等BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow sheet diagram of an apparatus for drying and treating septic waste containing a radioactive organic substance according to the present invention. [Description of Signs] 1 Vacuum drying oven 2 Far-infrared heater 3 Ejector for water 4 Condensation and collection tank 5 Exhaust gas from drying process
フロントページの続き (56)参考文献 特開 平２−263200（ＪＰ，Ａ) 特開 平１−249121（ＪＰ，Ａ) 特開 昭56−37599（ＪＰ，Ａ) 特開 平９−196555（ＪＰ，Ａ) 特開 平11−221599（ＪＰ，Ａ) 特開 平６−331268（ＪＰ，Ａ) 特開 昭61−65196（ＪＰ，Ａ) 実公 昭59−19277（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.7，ＤＢ名) G21F 9/30 B09B 3/00 F26B 21/00 Continuation of the front page (56) References JP-A-2-263200 (JP, A) JP-A-1-249121 (JP, A) JP-A-56-37599 (JP, A) JP-A-9-196555 (JP, A) JP-A-11-221599 (JP, A) JP-A-6-331268 (JP, A) JP-A-61-65196 (JP, A) JP-A-59-19277 (JP, Y2) (58) Field surveyed (Int. Cl. 7 , DB name) G21F 9/30 B09B 3/00 F26B 21/00
Claims (1)
乾燥処理する装置であって、遠赤外線ヒータを加熱源と
する減圧乾燥炉と、該乾燥炉を減圧するための水用エゼ
クターと、前記減圧乾燥炉と水用エゼクターとの間に配
置され、前記乾燥炉から吸引される放射性有機物を含有
した排ガス、水分等を凝縮捕集する凝縮捕集槽と、該凝
縮捕集槽で捕集された凝縮液を貯留する凝縮液タンク
と、排ガス中の未凝縮の水分を冷却補修する補助凝縮タ
ンクと、該補助凝縮タンクと前記水用エゼクターとの間
に配置されていて、逆流水を捕集する逆流防止捕集槽
と、前記凝縮捕集槽に冷却水を供給するための冷却液タ
ンクとを備えていることを特徴とする放射性有機物を含
有する腐敗性廃棄物の乾燥処理装置。(57) [Claims 1] An apparatus for drying septic waste containing radioactive organic matter, comprising: a decompression drying furnace using a far-infrared heater as a heating source; A water ejector for performing, a condensing collection tank that is disposed between the vacuum drying oven and the water ejector and that condenses and collects an exhaust gas containing a radioactive organic substance sucked from the drying oven, moisture, and the like , Said
Condensate tank that stores the condensate collected in the contraction collection tank
And an auxiliary condenser that cools and repairs uncondensed water in the exhaust gas.
Between the auxiliary condensing tank and the water ejector.
Backflow prevention collection tank that is located in
And a cooling liquid tank for supplying cooling water to the condensation collecting tank.
Drying apparatus of putrescible waste containing radioactive organic substances, characterized in that it comprises a tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28859199A JP3483811B2 (en) | 1999-09-01 | 1999-09-01 | Drying equipment for putrefactive waste containing radioactive organic matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28859199A JP3483811B2 (en) | 1999-09-01 | 1999-09-01 | Drying equipment for putrefactive waste containing radioactive organic matter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001074888A JP2001074888A (en) | 2001-03-23 |
| JP3483811B2 true JP3483811B2 (en) | 2004-01-06 |
Family
ID=17732248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28859199A Expired - Fee Related JP3483811B2 (en) | 1999-09-01 | 1999-09-01 | Drying equipment for putrefactive waste containing radioactive organic matter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3483811B2 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5637599A (en) * | 1979-09-05 | 1981-04-11 | Hitachi Ltd | Hydrogen*oxygen combining equipment |
| JPS5919277Y2 (en) * | 1979-10-08 | 1984-06-04 | 島田理化工業株式会社 | Decompression-resistant microwave drying container |
| DE3432103A1 (en) * | 1984-08-31 | 1986-03-13 | Kraftwerk Union AG, 4330 Mülheim | Method of reducing the volume of radioactively charged liquids and ribbed body for use thereby |
| JPH01249121A (en) * | 1988-03-31 | 1989-10-04 | Nippon Atom Ind Group Co Ltd | Method and apparatus for removing dust in gas |
| JPH079480B2 (en) * | 1988-12-30 | 1995-02-01 | 株式会社庄司操製作所 | Pretreatment equipment for radioactive waste |
| JP3448315B2 (en) * | 1993-05-26 | 2003-09-22 | 島田理化工業株式会社 | Microwave drying method and apparatus for radioactive contaminated waste |
| JPH09196555A (en) * | 1996-01-22 | 1997-07-31 | Nikki Kogyo Kk | Flask type vacuum dryer using dual jet ejector condenser |
| JPH11221599A (en) * | 1997-10-16 | 1999-08-17 | Tsukasa Sakuraba | Treatment of livestock excreta and food processing sludge and device therefor |
-
1999
- 1999-09-01 JP JP28859199A patent/JP3483811B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001074888A (en) | 2001-03-23 |
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