JP2992271B1 - Extrusion solidification equipment for combustible low-level radioactive waste. - Google Patents
Extrusion solidification equipment for combustible low-level radioactive waste.Info
- Publication number
- JP2992271B1 JP2992271B1 JP10199301A JP19930198A JP2992271B1 JP 2992271 B1 JP2992271 B1 JP 2992271B1 JP 10199301 A JP10199301 A JP 10199301A JP 19930198 A JP19930198 A JP 19930198A JP 2992271 B1 JP2992271 B1 JP 2992271B1
- Authority
- JP
- Japan
- Prior art keywords
- heating
- rotary press
- radioactive waste
- combustible
- extrusion
- 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
- 238000001125 extrusion Methods 0.000 title claims abstract description 27
- 239000002925 low-level radioactive waste Substances 0.000 title claims description 18
- 238000007711 solidification Methods 0.000 title claims description 7
- 230000008023 solidification Effects 0.000 title claims description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 48
- 239000002699 waste material Substances 0.000 claims abstract description 27
- 238000012546 transfer Methods 0.000 claims abstract description 15
- 239000002901 radioactive waste Substances 0.000 claims abstract description 13
- 238000000465 moulding Methods 0.000 claims abstract description 10
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000003028 elevating effect Effects 0.000 claims description 2
- 238000007731 hot pressing Methods 0.000 claims description 2
- 230000008961 swelling Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 27
- 238000000034 method Methods 0.000 description 17
- 239000004800 polyvinyl chloride Substances 0.000 description 8
- 229920000915 polyvinyl chloride Polymers 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 5
- 229920002554 vinyl polymer Polymers 0.000 description 5
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 231100001261 hazardous Toxicity 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000010849 combustible waste Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000012438 extruded product Nutrition 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 208000027066 STING-associated vasculopathy with onset in infancy Diseases 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000000045 pyrolysis gas chromatography Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002900 solid radioactive waste Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
【要約】
【課題】可燃性放射性廃棄物を加熱圧搾する時、プレス
工程における膨らむ現状と、排気ガスの発生量を最小化
する押出し固形化装置を提供する。
【解決手段】可燃性放射性廃棄物を一時貯えるホッパー
２と、押出しスクリュー内蔵型でシリンダーに熱媒など
の発熱体が装着された加熱押出し軸３とから構成され、
加熱押出し軸３の排出口には、加熱押出し物を加熱加圧
して圧搾する回転式プレス４を配置し、回転式プレス４
の周りに加熱と冷却とを同時にできるシステム１５〜１
９を配置する。回転式プレス４には回転式プッシャー５
を設け、回転式プレス４の成形廃棄物８の搬出側には移
送装置７を設け、移送装置７の先端の方には回転式プレ
ス４で圧搾固形化された成形廃棄物を引き付けて移送装
置７に載せる牽引装置６を設ける。また、加熱押出し軸
３の近傍に、中和塔１３に連結されガスを吸入する吸入
ダクト１０が配される。Kind Code: A1 The present invention provides an extruding and solidifying apparatus that minimizes the amount of exhaust gas generated and the current state of swelling in a pressing step when squeezing combustible radioactive waste. A hopper (2) for temporarily storing combustible radioactive waste, and a heating extrusion shaft (3) with a built-in extrusion screw and a heating element such as a heating medium mounted on a cylinder,
A rotary press 4 that heats and extrudes the heated extrudate and squeezes it is disposed at the outlet of the heated extrusion shaft 3.
System 15-1 that can simultaneously heat and cool around
9 is arranged. The rotary press 4 has a rotary pusher 5
The transfer device 7 is provided on the discharge side of the molding waste 8 of the rotary press 4, and the molding waste compressed and solidified by the rotary press 4 is attracted to the tip of the transfer device 7 to transfer the transfer device 7. A traction device 6 to be mounted on 7 is provided. Further, a suction duct 10 connected to the neutralization tower 13 for sucking gas is disposed near the heating extrusion shaft 3.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は原子力発電所で低準
位放射性廃棄物として分類されているビニル類、衣服
類、スクラップなどの可燃性雑固体放射性廃棄物の処理
に関し、特に、可燃性廃棄物を圧搾する時、プレス工程
における膨らむ現状及び低温運転で排気ガスの発生量を
最小化し、その排気ガスを濾過及び中和させ放射性核種
が大気中に放出されることを抑制した可燃性低準位放射
性廃棄物用の押出し固形化装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the treatment of combustible miscellaneous solid radioactive waste, such as vinyls, clothes, scraps, etc., which are classified as low-level radioactive waste in nuclear power plants, and more particularly to combustible waste. When squeezing materials, the current swelling in the pressing process and low-temperature operation minimize the amount of exhaust gas generated, and filter and neutralize the exhaust gas to suppress the release of radionuclides into the atmosphere. The present invention relates to an extrusion solidifying device for radioactive waste.
【０００２】[0002]
【従来の技術】低準位放射性廃棄物というのは、原子炉
の運転補修などに使用された機構、手袋、上靴、塵紙、
雑巾、防護服、ポリ塩化ビニル（ＰＶＣ）シート、ポリ
エチレン（ＰＥ）シート、除染紙、廃樹脂（例えば、イ
オン交換樹脂）、スラッジなどをいい、このような廃棄
物などは放射性物質が漏出されないように安全に保管す
る。2. Description of the Related Art Low-level radioactive waste refers to mechanisms used for repairing the operation of nuclear reactors, gloves, upper shoes, dust paper,
A rag, protective clothing, polyvinyl chloride (PVC) sheet, polyethylene (PE) sheet, decontamination paper, waste resin (for example, ion exchange resin), sludge, etc. Such radioactive materials do not leak out. Keep it safe.
【０００３】最近、韓国の原子力発電所から発生される
中・低準位放射性廃棄物などは年間約６００ドラム（２
００Ｌ基準、１９９６．１．１４日付中央日報科学技術
部分参照）と報道されている。このように多量発生され
る放射能廃棄物などのうち可燃性放射性廃棄物の場合に
は、嵩の減少及び積み滞りの解消のためプレスで圧搾し
て保管する方式が採用されている。Recently, about 600 drums (2 drums / year) of medium and low level radioactive waste generated from nuclear power plants in Korea
00L standard, see the science and technology section of the Central Daily Report dated 1996.1.14). In the case of combustible radioactive waste among radioactive waste generated in such a large amount, a method of squeezing and storing with a press is adopted in order to reduce bulk and eliminate stacking.
【０００４】しかし、上記のような可燃性放射性廃棄物
に対する単純な圧縮法は、圧縮後、再び膨らむ現状が目
立つため、嵩が大きいだけではなく、固形化されていな
いからドラムが続けて反発圧力を受けている状態である
ので保管方法としては良くない。[0004] However, the simple compression method for combustible radioactive waste as described above is not only bulky but also solid because it is not solidified because the current state of re-expansion after compression is conspicuous. It is not good as a storage method because it is in a state where it has been received.
【０００５】[0005]
【発明が解決しようとする課題】本発明の目的は、原子
力発電所のビニル類、衣服類、スクラップなどの可燃性
低準位放射性廃棄物を加熱圧搾後、プレス工程における
膨らむ現状を除去し、低温運転で排気ガスの発生量を最
小化し、その排気ガスを濾過及び浄化させ放射性核種が
大気中に放出されることを防止するようにした可燃性低
準位放射性廃棄物用の押出し固形化装置を提供するもの
である。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the current swelling in the press process after heating and compressing combustible low-level radioactive waste such as vinyls, clothes, scraps, etc. of a nuclear power plant, Extruded solidification equipment for combustible low-level radioactive waste that minimizes the amount of exhaust gas generated during low-temperature operation, filters and purifies the exhaust gas, and prevents the release of radionuclides into the atmosphere. Is provided.
【０００６】[0006]
【課題を解決するための手段】本発明は、可燃性低準位
放射性廃棄物をホッパーに投入し、ホッパーから加熱押
出し軸に移動され廃棄物を加熱押出し、その加熱押出さ
れた廃棄物は、数多くの固形化物を生産できるように回
転式プレスが設けられている。回転式プレスでは加熱押
出された廃棄物を供給受けて熱媒加熱機で加熱された熱
媒から加熱圧搾させた後、冷却システムを用いて固形化
させ、圧搾後の膨らむ現状を除去して嵩を最小化するよ
うに構成されている。このように成形された廃棄物は、
回転式プッシャーで脱形して牽引装置を用いて移送装置
に送って搬出積載倉庫に移送・保管する。加熱・押出し
及び加熱・圧搾時、発生する有害ガスは、吸入ファンを
用いて吸入ダクトで吸入し、ヘパフィルターで濾過して
中和塔によって中和させ、大気汚染の問題を不蝕するよ
うに処理することを主な特徴とする。SUMMARY OF THE INVENTION According to the present invention, flammable low-level radioactive waste is charged into a hopper, moved from the hopper to a heating extrusion shaft, and heat-extruded. A rotary press is provided to produce a large number of solids. In a rotary press, the heated and extruded waste is supplied and heated and squeezed from the heating medium heated by a heating medium heater, then solidified using a cooling system, and the swelling state after the squeezing is removed to remove bulk. Is minimized. The waste thus formed is
Deformed with a rotary pusher, sent to a transfer device using a traction device, and transferred and stored in a loading / unloading warehouse. Hazardous gas generated during heating / extrusion and heating / pressing is sucked through a suction duct using a suction fan, filtered through a hepa filter, neutralized by a neutralization tower, so as to avoid the problem of air pollution. Processing is the main feature.
【０００７】加熱押出し軸及び回転式プレスの工程で発
生するガスは微量であるが、そのうち、９９％以上が塩
化水素（ＨＣｌ）ガスである。ＨＣｌガスはＰＶＣが分
解される時、生成されるためＰＶＣが分解され始める温
度である１５０℃未満で運転すればＨＣｌガスの量を減
らすことができる。[0007] The amount of gas generated in the steps of the heating extrusion shaft and the rotary press is very small, and more than 99% of the gas is hydrogen chloride (HCl) gas. Since HCl gas is generated when PVC is decomposed, the amount of HCl gas can be reduced by operating at less than 150 ° C., which is the temperature at which PVC starts to be decomposed.
【０００８】[0008]
【発明の実施の形態】以下、望ましい実施の形態に基づ
いて作成した添付図面により本発明を具体的に説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings created based on preferred embodiments.
【０００９】図１において、本発明の可燃性低準位放射
性廃棄物用の押出し固形化装置はホッパー２と、押出し
スクリュー内蔵型としてシリンダーに熱媒加熱機１６か
ら供給を受けた熱媒体（オイル）を温度調節器１９を介
して低温である６０〜１５０℃に調節及び供給して加熱
させる加熱押出し軸３から構成され、加熱押出し軸３の
排出口には、加熱押出し物を加圧及び圧搾する回転式プ
レス４が配置されている。前記の回転式プレス４は、３
つ以上のプレスを有しているため成形廃棄物を連続的に
生産できるので効率を極大化させた。In FIG. 1, an extruder for solidifying a combustible low-level radioactive waste according to the present invention has a hopper 2 and a heating medium (oil) supplied from a heating medium heater 16 to a cylinder as an extrusion screw built-in type. ) Is controlled and supplied to a low temperature of 60 to 150 ° C. through a temperature controller 19 to heat the extruded product. The heated extruded product is pressurized and squeezed at an outlet of the heated extruded shaft 3. Rotating press 4 is arranged. The rotary press 4 is composed of 3
Since there are more than two presses, molding waste can be produced continuously, thus maximizing efficiency.
【００１０】回転式プレス４の側面壁は、加熱及び冷却
を同時にできるシステムで構成されているが、加熱押出
し軸３から供給を受けた廃棄物を加熱する時には、熱媒
（オイル）加熱機１６で加熱された熱媒の供給を受ける
方向調節バルブ１８と、温度調節機１９とを介してプレ
スの側面壁へ送って１５０℃以下に維持・循環され回転
式プレス４の加圧・圧搾時、加熱できるように構成され
ている。上記の工程後、加熱圧搾された廃棄物を冷却す
る際には、冷却水供給装置１７から冷却水を熱媒（オイ
ル）冷却機１５に供給して熱交換方法で熱媒を冷却し、
上記の冷却された熱媒は方向調節バルブ１８と、温度調
節機１９とを介して加熱・圧搾された廃棄物を連続的に
冷却させることができるように構成されている。このた
め、加熱・圧搾された廃棄物の迅速な固形化を達成でき
る。上記の加熱押出し軸３は６０〜１５０℃の比較的に
低い温度でビニル類が軟化、あるいは溶融された状態及
び廃棄物を混合して押出し機能を有したものである。廃
棄物の加熱押出し及び加熱圧搾時、工程の単純化のため
に熱媒加熱方式の代わりにバンド形態の電気ヒーターを
使用できる。Although the side wall of the rotary press 4 is constituted by a system capable of simultaneously heating and cooling, when heating the waste supplied from the heating extrusion shaft 3, the heating medium (oil) heater 16 is used. At the time of pressurizing and pressing the rotary press 4, it is sent to the side wall of the press via the directional control valve 18 which receives the supply of the heat medium heated in the above, and sent to the side wall of the press and maintained and circulated below 150 ° C. It is configured so that it can be heated. After the above process, when cooling the heat-pressed waste, cooling water is supplied from the cooling water supply device 17 to the heat medium (oil) cooler 15 to cool the heat medium by a heat exchange method,
The cooled heat medium is configured to be able to continuously cool the heated and squeezed waste through a direction control valve 18 and a temperature controller 19. Therefore, rapid solidification of the heated and pressed waste can be achieved. The above-mentioned heating extrusion shaft 3 has a function of extruding vinyls at a relatively low temperature of 60 to 150 ° C. by mixing or mixing waste and softened vinyl. When extruding and heating the waste, a band-shaped electric heater can be used instead of the heating medium heating method to simplify the process.
【００１１】回転式プレス４には、圧搾固形化された成
形廃棄物の脱形用の昇降式の回転式プッシャー５を設
け、回転式プレス４の成形廃棄物の搬出側には、移送装
置７を設け、移送装置７の先端の方には、回転式プレス
４で圧搾固形化された成形廃棄物を引き付けて移送装置
７に載せるようにする前・後進式の牽引装置６を設け
る。回転式プッシャー５と、牽引装置６とは、油圧、あ
るいは空圧シリンダーのラム（ＲＡＭ）の先端に下板、
あるいは牽引板を付着したものである。そして、移送装
置７は、滑り台、傾斜されたロール台に複数のロールを
一定のピッチ間隙に配置して滑って降りるようにしたも
のである。The rotary press 4 is provided with an elevating rotary pusher 5 for demolding the pressed and solidified molding waste, and a transfer device 7 is provided on the rotary press 4 at the discharge side of the molding waste. At the end of the transfer device 7, there is provided a forward / reverse traction device 6 for attracting the molded waste compacted and solidified by the rotary press 4 and placing it on the transfer device 7. The rotary pusher 5 and the traction device 6 include a lower plate at the tip of a ram (RAM) of a hydraulic or pneumatic cylinder,
Alternatively, a traction plate is attached. The transfer device 7 is configured such that a plurality of rolls are arranged on a slide base or an inclined roll base at a constant pitch gap and slide down.
【００１２】一方、加熱押出し軸３の排出口と、回転式
プレス４の入口とで発生されるガスを吸入できる位置即
ち、回転式プレスの上部位置に吸入ダクト１０を配置
し、吸入ダクト１０は、管でヘパフィルター１１に連結
され、ヘパフィルターの排出口は、吸入ファン１２に、
吸入ファン１２の排出口は、中和塔１３に管で連結す
る。中和塔１３は、循環水槽１４内蔵型である。On the other hand, the suction duct 10 is arranged at a position where the gas generated at the outlet of the heating extrusion shaft 3 and the inlet of the rotary press 4 can be sucked, that is, at the upper position of the rotary press. , The pipe is connected to the hepa filter 11, and the outlet of the hepa filter is connected to the suction fan 12,
The outlet of the suction fan 12 is connected to the neutralization tower 13 by a pipe. The neutralization tower 13 has a built-in circulating water tank 14.
【００１３】このように構成された本発明において、Ｐ
Ｅシート、ＰＶＣシート、ナイロンシート、ポリエステ
ル−綿等の可燃性放射性廃棄物１は、ホッパー２を介し
て加熱押出し軸３に投入され熱媒加熱機１６から加熱さ
れた熱媒を適当な温度、例えば、ＰＶＣの溶融開始温度
である１５０℃より低い温度、具体的に６０〜１５０℃
で温度調節機１７を介して加熱押出される。押出し廃棄
物は回転式プレス４で加圧・圧搾される共に熱媒加熱機
１６で加熱された熱媒を方向調節バルブ１８と、温度調
節機１９とを操作して圧搾廃棄物を加熱する。それから
冷却水供給装置１７から供給される冷却水を方向調節バ
ルブ１８を操作して圧搾廃棄物を加熱させた熱媒を熱媒
冷却機１５で熱交換させ温度調節機１９を介して圧搾さ
れた廃棄物を迅速に冷却・固形化させることができる温
度に調節して回転式プレスの壁を熱媒が連続的に循環す
る。In the present invention thus configured, P
A combustible radioactive waste 1 such as an E sheet, a PVC sheet, a nylon sheet, or a polyester-cotton is supplied to a heating extrusion shaft 3 via a hopper 2 and heated by a heating medium heater 16 to a heating medium at an appropriate temperature. For example, a temperature lower than the melting start temperature of PVC of 150 ° C., specifically 60 to 150 ° C.
And heated and extruded through a temperature controller 17. The extruded waste is pressed and squeezed by the rotary press 4 and heats the heated medium heated by the heating medium heater 16 by operating the direction control valve 18 and the temperature controller 19. Then, the cooling water supplied from the cooling water supply device 17 was operated by operating the directional control valve 18 to exchange heat with the heating medium cooler 15 by heating the compressed waste through the heating medium cooler 15, and was compressed through the temperature controller 19. The heating medium is continuously circulated through the wall of the rotary press by adjusting the temperature so that the waste can be rapidly cooled and solidified.
【００１４】圧搾固形化された成形廃棄物８は、回転式
プッシャー５で脱形し、牽引装置６で移送装置７に移し
て載せる。成形廃棄物８が移送装置７によって搬送位置
に滑って降りる。これを積載倉庫に運搬・保管する。The compacted solid waste 8 is removed by the rotary pusher 5 and transferred to the transfer device 7 by the traction device 6 for mounting. The molding waste 8 is slid down by the transfer device 7 to the transport position. This is transported and stored in the loading warehouse.
【００１５】一方、加熱押出し軸３で加熱押出される過
程と、回転式プレス４で加熱・加圧される過程において
発生する有害ガス９は、吸入ファン１２の吸入力により
吸入ダクト１０で強制的に吸入され、吸入ダクト１０に
流入された有害ガス９は、管を介してヘパフィルター１
１に流入され濾過され、その後、中和塔を通過する時、
循環水槽１４の苛性ソーダ（ＮａＯＨ）溶液が中和塔１
３にスプレーされて有害ガス９を中和させる。On the other hand, the harmful gas 9 generated during the process of being heated and extruded by the heating extrusion shaft 3 and the process of being heated and pressurized by the rotary press 4 is forcibly forced by the suction duct 10 by the suction force of the suction fan 12. The harmful gas 9 sucked into the suction duct 10 and flowing into the suction duct 10 passes through the hepafilter 1 through a pipe.
1 and filtered, then pass through the neutralization tower,
The caustic soda (NaOH) solution in the circulating water tank 14
3 is sprayed to neutralize the harmful gas 9.
【００１６】ここで、可燃性放射性廃棄物の供給、押出
し、圧搾、冷却搬出、移送運搬貯蔵に至る全工程の自動
化、廃棄物の供給時の定量化、各工程の順次的な制御に
よるトラブル予防、無接点ＰＬＣ方式と、各工程別のセ
ンサー、あるいはスイッチを活用した定位置制御、充電
押出し中でも加熱押出し軸の可動を中止させることがで
きる制御手段、誤動作及びＴＡＫＥ ＴＩＭＥ ＳＡＶＩ
ＮＧのためセンサー及びタイマー回路のＯＲ回路採択、
放射性廃棄物の特性に従う投入量の調節と作業及び補修
管理の便宜のための自動／手動式選択回路、安全管理の
ために必要な場所に非常停止スイッチを付着することな
どを備えて可燃性低準位放射性廃棄物をより安全で効率
的に固形化できる。Here, automation of all processes from supply, extrusion, squeezing, cooling and unloading, transfer and storage of combustible radioactive waste, quantification of waste supply, and prevention of trouble by sequential control of each process , Non-contact PLC system, fixed position control using sensors or switches for each process, control means capable of stopping the movement of the heating extrusion shaft even during charging extrusion, malfunction and TAKE TIME SAVI
Adopted OR circuit of sensor and timer circuit for NG,
Automatic / manual selection circuit for adjustment of input quantity according to the characteristics of radioactive waste and convenience of work and repair management, attaching an emergency stop switch to the place required for safety management, etc. Level radioactive waste can be solidified more safely and efficiently.
【００１７】［可燃性低準位放射性廃棄物の処理例］ Ｉ．可燃性（ビニル類）廃棄物の種類 ＰＥシート、ＰＶＣシート、ナイロンシート、ポリエス
テル−綿[Example of treatment of combustible low-level radioactive waste] Types of combustible (vinyls) waste PE sheet, PVC sheet, nylon sheet, polyester-cotton
【００１８】II．試験 １）熱重量分析（Thermo Gravimetric Analysis） 温度増加による重さの減量分析 熱的な挙動が表われる温度測定 ２）示差走査型熱分析（Differential Scanning Calori
meter） 融点測定 軟化点測定 ３）熱分解ガスクロマトグラフィー（Pyrolysis Gas Ch
romatography） 熱分解時、生成されるガスの分析 ４）排気ガス処理 排気ガスの確認と安全な処理方案の確立II. Test 1) Thermo Gravimetric Analysis Weight loss analysis due to temperature increase Temperature measurement showing thermal behavior 2) Differential Scanning Calori
meter) Melting point measurement Softening point measurement 3) Pyrolysis Gas Chromatography
romatography) Analysis of gas generated during pyrolysis 4) Exhaust gas treatment Confirmation of exhaust gas and establishment of safe treatment plan
【００１９】[0019]
【表１】 [Table 1]
【００２０】IV．有害ガスの処理 １）プラスチック溶融装置は、排気ガス規制対象ではな
い（例えば、射出機、押出し機） ２）３００℃以上では微量の様々なガスが発生するが、
２００℃以下ではＨＣｌガスのみ発生 ３）発生量は、ＰＶＣの含量に伴って異なるか１０−５
０ｐｐｍである ４）中和塔適用時、約９０％以上除去して回収が可能で
ある ５）廃棄物の乾燥状態に伴って有害ガス中にＨ2 Ｏ含有IV. Hazardous gas treatment 1) Plastic melting equipment is not subject to exhaust gas regulations (eg, injection machine, extruder) 2) At 300 ° C or higher, trace amounts of various gases are generated,
Only HCl gas is generated below 200 ° C. 3) Does the amount generated vary with the PVC content?
0) 4) When applied to the neutralization tower, it can be recovered by removing about 90% or more. 5) H 2 O is contained in the harmful gas due to the dry state of the waste.
【００２１】Ｖ．結論 １）加熱圧搾方式によって可燃性廃棄物の嵩の減少可能 ２）無加熱圧搾と比較すると３０−５０％の減量効果が
ある ３）排気ガスの９９％以上はＨＣｌガスであり、ＰＶＣ
の含量に伴って発生量は異なるが、約１０−５０ｐｐｍ
である ４）中和塔適用時、約９０％以上除去効果があるV. Conclusions 1) The volume of combustible waste can be reduced by the hot pressing method. 2) 30-50% weight reduction effect compared to non-heating pressing. 3) More than 99% of exhaust gas is HCl gas and PVC.
Although the amount of generation varies with the content of
4) When the neutralization tower is applied, the removal effect is about 90% or more.
【００２２】[0022]
【発明の効果】以上、説明したように本発明は、可燃性
低準位放射性廃棄物を加熱押出し、加熱圧搾及び冷却す
ることにより、プレス工程で膨らむ現状が極小化され、
加熱押出し過程及び加熱圧搾過程での有害ガスの発生も
最大限減らすことができる。As described above, according to the present invention, the present situation in which the combustible low-level radioactive waste expands in the pressing step is minimized by heating, extruding, and pressing and cooling.
The generation of harmful gases during the heating extrusion process and the heating pressing process can be reduced as much as possible.
【００２３】また、有害ガスは、浄化・中和させ大気中
に放出することにより、有害成分による大気汚染も減ら
すことができる。The harmful gas is purified and neutralized and released into the atmosphere, so that air pollution due to harmful components can be reduced.
【図１】本発明の可燃性低準位放射性廃棄物用の押出し
固形化装置に関する全体構成図である。FIG. 1 is an overall configuration diagram of an extruder for solidifying a combustible low-level radioactive waste according to the present invention.
１：可燃性低準位放射性廃棄物、２：ホッパー、３：加
熱押出し軸、４：回転式プレス、５：回転式プッシャ
ー、６：牽引装置、７：移送装置、８：成形廃棄物、
９：有害ガス、１０：吸入ダクト、１１：ヘパフィルタ
ー、１２：吸入ファン、１３：中和塔、１４：循環水
槽、１５：熱媒（オイル）冷却機、１６：熱媒（オイ
ル）加熱機、１７：冷却水供給装置、１８：方向制御バ
ルブ、１９：温度調節機。1: flammable low-level radioactive waste, 2: hopper, 3: heated extrusion shaft, 4: rotary press, 5: rotary pusher, 6: traction device, 7: transfer device, 8: molded waste,
9: Hazardous gas, 10: Suction duct, 11: Hepa filter, 12: Suction fan, 13: Neutralization tower, 14: Circulating water tank, 15: Heat medium (oil) cooler, 16: Heat medium (oil) heater , 17: cooling water supply device, 18: directional control valve, 19: temperature controller.
Claims (6)
えるホッパー２と、押出しスクリュー内蔵型でシリンダ
ーに熱媒などの発熱体が装着された加熱押出し軸３とか
ら構成され、 加熱押出し軸３の排出口には、加熱押出し物を加熱加圧
して圧搾する回転式プレス４を配置し、 回転式プレス４の周りに加熱と、冷却とを同時にできる
システム１５〜１９を配置し、 回転式プレス４には、圧搾固形化された成形廃棄物の脱
形用昇降式の回転式プッシャー５を設け、 回転式プレス４の成形廃棄物８の搬出側には、移送装置
７を設け、 移送装置７の先端の方には、回転式プレス４で圧搾固形
化された成形廃棄物を引き付けて移送装置７に載せるよ
うにする前・後進式の牽引装置６を設け、 加熱押出し軸３の排出口と、回転式プレス４の入口とで
発生されるガスを吸入できる位置即ち、回転式プレス４
の上部位置に吸入ダクト１０を配置し、 吸入ダクト１０は、管でヘパフィルター１１に連結さ
れ、 ヘパフィルターの排出口は、吸入ファン１２に、 吸入ファン１２の排出口は、中和塔１３に管で連結し、 中和塔１３は、循環水槽１４が内蔵型で構成されること
を特徴とする可燃性低準位放射性廃棄物用の押出し固形
化装置。1. A hopper 2 for temporarily storing the supplied combustible radioactive waste, and a heating extrusion shaft 3 with a built-in extrusion screw and a heating element such as a heating medium mounted on a cylinder. At the outlet of the rotary press 4, a rotary press 4 for heating and pressurizing the heated extrudate is squeezed. Around the rotary press 4, systems 15 to 19 capable of simultaneous heating and cooling are arranged. 4 is provided with an elevating rotary pusher 5 for demolding the pressed and solidified molding waste, and a transfer device 7 is provided on the discharge side of the molding waste 8 of the rotary press 4. At the front end of the device, there is provided a forward / reverse traction device 6 for attracting the molding waste squeezed and solidified by the rotary press 4 and placing it on the transfer device 7. Departs at the entrance of rotary press 4 The position where the generated gas can be sucked, that is, the rotary press 4
A suction duct 10 is arranged at an upper position of the suction pipe, and the suction duct 10 is connected to a hepa filter 11 by a pipe, and an outlet of the hepa filter is connected to a suction fan 12, and an outlet of the suction fan 12 is connected to a neutralization tower 13. An extruding solidification apparatus for combustible low-level radioactive waste, wherein the apparatus is connected by a pipe, and the neutralization tower 13 has a built-in circulating water tank 14.
で可燃性放射性廃棄物を加熱押出すようにしたことを特
徴とする請求項１に記載の可燃性低準位放射性廃棄物用
の押出し固形化装置。2. The heating extrusion shaft 3 has a temperature of 60 to 150 ° C.
The extrudable solidification apparatus for combustible low-level radioactive waste according to claim 1, wherein the combustible radioactive waste is extruded by heating.
熱圧搾するようにしたことを特徴とする請求項１に記載
の可燃性低準位放射性廃棄物用の押出し固形化装置。Wherein the rotary press is pressurized at 0.99 ° C. or less
The extrusion solidifying apparatus for combustible low-level radioactive waste according to claim 1, wherein the apparatus is subjected to hot pressing .
は、回転式プレス４で加熱押出された可燃性放射性廃棄
物を加熱および冷却して迅速に固形化できることを特徴
とする請求項１に記載の可燃性低準位放射性廃棄物用の
押出し固形化装置。4. The heating and cooling system 15 to 19.
2. The extruded solidification for combustible low-level radioactive waste according to claim 1, wherein the combustible radioactive waste heated and extruded by the rotary press 4 can be rapidly solidified by heating and cooling. apparatus.
ー５とは、連続的な供給で４つ以上の成形廃棄物を加熱
圧搾固形及び脱形できるようにしたことを特徴とする請
求項１に記載の可燃性低準位放射性廃棄物用の押出し固
形化装置。5. The rotary press (4) and the rotary pusher (5) are capable of continuously pressing and solidifying and demolding four or more molding wastes by continuous supply. Extrusion solidification apparatus for combustible low-level radioactive waste according to claim 1.
式を熱媒の代わりにバンド形態の電気ヒーターを使用で
きるようにしたことを特徴とする請求項１に記載の可燃
性低準位放射性廃棄物用の押出し固形化装置。6. The combustible low-level radioactive waste according to claim 1, wherein a band-shaped electric heater can be used instead of the heating medium during the heating extrusion and the heating pressing. Extrusion solidification equipment for objects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10199301A JP2992271B1 (en) | 1998-07-14 | 1998-07-14 | Extrusion solidification equipment for combustible low-level radioactive waste. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10199301A JP2992271B1 (en) | 1998-07-14 | 1998-07-14 | Extrusion solidification equipment for combustible low-level radioactive waste. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2992271B1 true JP2992271B1 (en) | 1999-12-20 |
| JP2000039498A JP2000039498A (en) | 2000-02-08 |
Family
ID=16405535
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10199301A Expired - Fee Related JP2992271B1 (en) | 1998-07-14 | 1998-07-14 | Extrusion solidification equipment for combustible low-level radioactive waste. |
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|---|---|
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| CN117087128A (en) * | 2023-10-19 | 2023-11-21 | 江苏君华特种工程塑料制品有限公司 | Conveying device and conveying method for PEEK material and preparation method of conveying device and conveying method |
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| JP2000039498A (en) | 2000-02-08 |
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