JPS62114692A - Method for solidification treatment of used ion exchange resin - Google Patents
Method for solidification treatment of used ion exchange resinInfo
- Publication number
- JPS62114692A JPS62114692A JP60253803A JP25380385A JPS62114692A JP S62114692 A JPS62114692 A JP S62114692A JP 60253803 A JP60253803 A JP 60253803A JP 25380385 A JP25380385 A JP 25380385A JP S62114692 A JPS62114692 A JP S62114692A
- Authority
- JP
- Japan
- Prior art keywords
- ion exchange
- exchange resin
- used ion
- solidification treatment
- solidification
- 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.)
- Granted
Links
- 239000003456 ion exchange resin Substances 0.000 title claims abstract description 42
- 229920003303 ion-exchange polymer Polymers 0.000 title claims abstract description 42
- 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 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000008023 solidification Effects 0.000 title claims abstract description 24
- 238000007711 solidification Methods 0.000 title claims abstract description 24
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 230000002285 radioactive effect Effects 0.000 claims abstract description 6
- 239000002910 solid waste Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 10
- 230000006835 compression Effects 0.000 abstract description 9
- 238000007906 compression Methods 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 9
- 239000003795 chemical substances by application Substances 0.000 abstract description 5
- 239000004800 polyvinyl chloride Substances 0.000 abstract description 4
- 229920000915 polyvinyl chloride Polymers 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 abstract description 2
- 238000004898 kneading Methods 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000000354 decomposition reaction Methods 0.000 description 6
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 5
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002386 leaching Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000013502 plastic waste Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は使用済みイオン交換樹脂の固形化処理方法に関
し、詳しくは原子力発電所等で発生するｌｌ１ｆＪ４性
の使用済みイオン交換樹脂、あるいは一般産業界から排
出される有害な重金属を含む使用済みイオン交換樹脂を
安定な固形物として固定化し、一時的貯蔵あるいは最終
処分に便利な形態に変換する使用済みイオン交換樹脂の
固形化処理方法に関りる〜ｂのである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for solidifying used ion exchange resin, and more specifically, to a method for solidifying used ion exchange resin, and more specifically, to solidifying used ion exchange resin of 11fJ4 type generated at nuclear power plants, etc., or general industry. This product relates to a solidification treatment method for used ion exchange resins, which immobilizes used ion exchange resins containing harmful heavy metals discharged from the world into a stable solid substance and converts them into a form convenient for temporary storage or final disposal. It is from ru~b.
［従来の技術１
今日、原子力発電所等の原子力施設で復水浄化あるいは
廃水処理等の目的でイオン交換樹脂が用いられている。[Prior Art 1] Today, ion exchange resins are used in nuclear facilities such as nuclear power plants for purposes such as condensate purification and wastewater treatment.
このイオン交換樹脂を廃棄処理する際には、放射能に汚
染されているため、その廃棄処理する方法が問題となる
。When disposing of this ion exchange resin, the method of disposing of it becomes a problem because it is contaminated with radioactivity.
例えば、使用済みイオン交換樹脂のあるものは放射能が
１０１〜１０−２μＣｉ／ｃｃと高く、また長半減期核
種のＣ８やＳｒを含／υでいるため、より安全な形での
長期貯蔵の必要上、その処理は焼却あるいは湿式分解等
の分解減容か、もしくはセメント固化、アスファル１〜
固化よたはノラスチック囚化等の直接固化処理する方法
が開発研究され、その一部は実用化されている。しかし
ながら、前者の分解減容のうち焼却による方法は高温で
処理するためイオン交換樹脂のうちカチオン樹脂の交換
基が分解し、ＳＯｘガスを発生し、その発生した排ガス
の処理設備の材質問題や、ＳＯｘガスの回収等に問題が
有る。また、湿式分解にあっては３０４が分解液中に残
存するので苛性ソーダ等で中和してから蒸発濃縮させる
等の後処理が必要であると共に分解剤が高価である等、
経済性に問題がある。後者の直接固形化処理方法におい
ては減容性が悪かったり、処理設備が高価である等の問
題がある。For example, some used ion-exchange resins have high radioactivity of 101 to 10-2 μCi/cc and contain long half-life nuclides such as C8 and Sr, so they cannot be stored safely for long periods of time. If necessary, the treatment is by incineration or wet decomposition to reduce the volume, cement solidification, asphalt 1~
Direct solidification treatment methods such as solidification and nolastic confinement have been developed and researched, and some of them have been put into practical use. However, in the former method of decomposition and volume reduction, the incineration method is processed at high temperatures, so the exchange group of the cation resin among the ion exchange resins decomposes, generating SOx gas, and there are problems with the material of the processing equipment for the generated exhaust gas. There are problems with the recovery of SOx gas, etc. In addition, in wet decomposition, 304 remains in the decomposition solution, so post-treatment such as neutralization with caustic soda or the like and evaporation concentration is required, and the decomposition agent is expensive.
There is a problem with economics. The latter direct solidification treatment method has problems such as poor volume reduction properties and expensive treatment equipment.
一方、放射能の強度が極低レベルでほとんど無害なイオ
ン交換樹脂であっても、米国等では放飼性物質というこ
とで高叶仝性容器（、ｌ−１Ｉ Ｃ）に収納して処分し
なければならない。しかし、このＨＩ Ｇは高価である
ため放射能の強度が中レベル以下のイオン交換樹脂処理
にはコスト的に適用しずらい等の問題があるため、一般
にはタンク貯蔵を行ない、実際上処理を行なっている所
は少ない。On the other hand, even though ion exchange resins have extremely low levels of radioactivity and are almost harmless, in the United States and other countries, they are considered free-ranging substances and must be disposed of by storing them in high-performance containers (l-1I C). It won't happen. However, since HIG is expensive, it is difficult to apply it to ion-exchange resin treatment where the radioactivity intensity is below a medium level. There are very few places where this is done.
また、−設層業界にＪ３ける使用済みイオン交換樹脂の
処理方法は簡単であり、イオン交換樹脂製造者が回収し
特定な場所で山積みし、または埋め立てしている。しか
し、有害な重金属を含むイオン交換樹脂処理については
、土壌汚染や河川への流出等の問題が残っている。Furthermore, the method for disposing of used ion exchange resins in the layer construction industry is simple, and ion exchange resin manufacturers collect them and pile them up at specific locations or landfill them. However, problems such as soil contamination and runoff into rivers remain regarding treatment with ion exchange resins that contain harmful heavy metals.
［発明の目的］
本発明の目的は、原子力発電所等で生ずる放射性の使用
済みイオン交換樹脂あるいは一般産業界から生ずる有害
な重金属を含む使用済みイオン交換樹脂を新たな２次廃
棄物を発生させることなく、固形化する経済性に優れ、
かつ安定な固形化物を得る使用済みイオン交換樹脂の固
形化処理方法を提供することにある。[Objective of the Invention] The object of the present invention is to generate new secondary waste from radioactive used ion exchange resins generated at nuclear power plants, etc. or used ion exchange resins containing harmful heavy metals generated from general industry. Excellent economy in solidifying without
Another object of the present invention is to provide a method for solidifying a used ion exchange resin, which yields a stable solidified product.
Ｅ問題点を解決するための手段］
本発明は、上述のような問題点に対応して検討した結果
完成したものであり、使用流みイオン交換樹脂を固形化
処理するにあたり、熱可塑性樹脂を固形化材として使用
することを特徴とする使用済みイオン交換樹脂の固形化
処理方法である。Means for Solving Problem E] The present invention was completed as a result of studies in response to the above-mentioned problems, and it is possible to This is a method for solidifying a used ion exchange resin, which is characterized in that it is used as a solidifying material.
すなわち前述の先行技術の問題を以下の処理方針で解決
した。先ず、ＳＯｘガスにつ、いては処理を低温で行な
いＳＯｘガスを発生きりなくした。That is, the problems of the prior art mentioned above were solved by the following processing policy. First, regarding SOx gas, the treatment was carried out at a low temperature to eliminate the generation of SOx gas.
次に直接固化処理における減容できないという問題点に
対しては、固体廃棄物に含まれる熱可塑性樹脂おにび／
または外部から導入した熱可塑性樹脂を固形化材として
混合圧縮し、総合的にみて減容化させることにより解潤
させた。放射能あるいは有害な重金属を含んでいるとい
う問題については固形化材で閉じ込めることにより、そ
の浸出は防げる。さらに、使用済みイオン交換樹脂中の
自由水は、本発明により得られた固形化物中には処理過
程において蒸発してほとんどがなくなる。そのため、高
１１１１ｉ’、； ＨＩ Ｃを使用しなくても放射能の
浸出が防止可能で通゛常のドラム缶による貯蔵が可能と
なる。Next, to solve the problem of not being able to reduce the volume in direct solidification treatment,
Alternatively, a thermoplastic resin introduced from the outside was mixed and compressed as a solidifying material, and dissolved by reducing the overall volume. If the problem is that it contains radioactivity or harmful heavy metals, leaching can be prevented by confining it with a solidifying material. Furthermore, most of the free water in the used ion exchange resin evaporates during the treatment process and disappears in the solidified product obtained by the present invention. Therefore, leaching of radioactivity can be prevented without using HIC, and storage in ordinary drums is possible.
具体的には、上記の固形化材とは廃棄物として発生する
固体廃棄物を使い、この内に含まれるポリエチレン（Ｉ
Ｉ） Ｌ ）やポリ塩化ビニル（ＰＶＣ）等の熱可塑性
樹脂を固形化させる。この固体廃棄物は放ｑ４性を有し
ていても処理可能であることはいうまでしない。また、
ＰＥやＰＶＣ等の熱可塑性樹脂が溶融する温度範囲内で
ある１００へ・１９０℃で、使用済みイオン交換樹脂Ｊ
３よび固体廃棄物の混合物を撹拌圧縮することにより、
ＳＯｘガスは発生せず（ＳＯｘガスが発生する温度は２
００〜３５０℃である。）、またイオン交換樹脂中の水
分が蒸発し成形物の自由水も無くなるため、ＨＩＣを使
用する必要が無くなるわ【ノである。Specifically, the above-mentioned solidification material uses solid waste generated as waste, and the polyethylene (I
I) Solidify a thermoplastic resin such as L) or polyvinyl chloride (PVC). It goes without saying that this solid waste can be treated even if it has radio-q4 properties. Also,
Used ion exchange resin J
By stirring and compressing a mixture of 3 and solid waste,
SOx gas is not generated (the temperature at which SOx gas is generated is 2
00-350°C. ), and since the water in the ion exchange resin evaporates and the free water in the molded product disappears, there is no need to use HIC.
本発明にＪ５いＣ１熱可塑性樹脂を含む固体廃棄物は細
かく細断ないしは破砕されているｆ、ｉ ｈｔ ／１７
ましい。これ【よ、固形化処理が押出成形によつＣ行な
われるので、押出様のダイス１］径に対応でさるような
程度の大きさに１１１分化づることが必要なためであり
、細断ないしは破砕後に、さらに粉砕することが望まし
い。In the present invention, the solid waste containing the J5 C1 thermoplastic resin is finely shredded or crushed f, i ht /17
Delicious. This is because the solidification process is carried out by extrusion molding, so it is necessary to divide it into 111 pieces of size that correspond to the diameter of the die 1 for extrusion, and it is necessary to cut it into pieces or cut it into pieces. After crushing, it is desirable to further crush the material.
また、使用済みイオン交換樹脂は水切り程度の脱水がさ
れていることが好ましい。Further, it is preferable that the used ion exchange resin has been dehydrated to the extent of draining water.
なお、始めから固体廃棄物中に使用済みイオン交換樹脂
が含まれていても本発明により固形化処理可能であるこ
とはいうまでもない。It goes without saying that even if the solid waste contains used ion exchange resin from the beginning, it can be solidified according to the present invention.
本発明においては、固形化材として前述のように熱可塑
性樹脂を使用するが、この種類、性状について（よ何ら
問われず、固形化する際に必要とする程度の成形性が備
わっていれば良い。この熱可塑性樹脂は、通常、固体廃
棄物中に含まれるＰ［、ＰＶＣ等が利用されるが、一部
または全部を外部より導入して用いてもよい。外部から
導入Ｊる際も固形化処理することから、新品である必要
はなく、再生品でもあるいは一般に排出されている熱可
塑性プラスチック系廃棄物を使用しても良い。In the present invention, a thermoplastic resin is used as the solidifying material as described above, but there are no particular restrictions on the type or properties of the thermoplastic resin, as long as it has the moldability required for solidifying. This thermoplastic resin is usually made of P[, PVC, etc. contained in solid waste, but some or all of it may be introduced from the outside. Since the material is chemically treated, it does not need to be new, and recycled products or generally disposed thermoplastic plastic waste may be used.
上記のごとく熱可塑性樹脂であれば、どのような樹脂で
も使用できるが、１００〜１９０℃程度の温度で軟化な
いしは融解するものが最も利用しやすい。また、固形化
するに際して、固体廃棄物中の熱可塑性樹脂を利用する
場合、その熱可塑性樹脂の含有間は１０重量％以−Ｆの
範囲にあることが必要であり、また水分も少ない方が良
いが３０重間％までは固形化可能である。なお、この範
囲の熱可塑性樹脂の含有間は、外部から導入したＭも含
むものである。As mentioned above, any thermoplastic resin can be used, but those that soften or melt at a temperature of about 100 to 190°C are the easiest to use. In addition, when using thermoplastic resin in solid waste for solidification, the content of the thermoplastic resin must be in the range of 10% by weight or more -F, and the lower the water content, the better. Although it is good, it is possible to solidify up to 30% by weight. Note that this range of thermoplastic resin content also includes M introduced from the outside.
本発明にＪ３いては、使用済みイオン交換樹脂等の固形
化は、押出成形機によりなされるが、機内壁と圧縮スク
リューとの間隙で固体廃棄物の摺動により摩擦熱が発生
するため、外部よりの加熱を要しないか、またはダイス
部分の補助加熱で固形化が行なわれる。In J3 of the present invention, solidification of used ion exchange resin, etc. is done by an extrusion molding machine, but since frictional heat is generated due to sliding of solid waste in the gap between the inside wall of the machine and the compression screw, external Solidification is performed without additional heating or by supplementary heating of the die part.
［作 用］
本発明をさらに個別的に説明する。第１図は本発明によ
る使用済みイオン交換樹脂の固形化処理方法の工程を示
すブロック図である。[Function] The present invention will be further explained individually. FIG. 1 is a block diagram showing the steps of a method for solidifying a used ion exchange resin according to the present invention.
例えば原子力発電所などから排出された低レベル放射性
の使用済みイオン交換樹脂および固体廃棄物をホッパか
ら細断機または破砕機に導入し、粗砕し、場合によって
更に粉砕機で粉砕した後、混合室Ｍ供給装置に連絡する
貯槽に貯留し、次いで押出成形機で固形化する。熱可塑
性樹脂の一部または全部を外部から供給する場合には、
ホッパに供給する１、この押出成形機において、使用済
みイオン交換１コ（脂おＪ：び固体廃棄物は混線を受け
たのら一定の形、例えばロッド状、ストランド状あるい
はこれを切断したペレット状に成形して、ドラム缶等の
貯蔵容器に貯蔵される。さらに、より減容性の高い焼Ｍ
１溶融処理を行なう場合にも、これらの形状になってい
るため取汲いが容易であるという利点らある。また、使
用済みイオン交換樹脂は粒状または粉状であるので直接
混合定量供給装置に供給してもよい。For example, low-level radioactive used ion exchange resins and solid waste discharged from nuclear power plants are introduced from a hopper into a shredder or crusher, coarsely crushed, and optionally further crushed in a crusher before being mixed. It is stored in a storage tank connected to the chamber M supply device, and then solidified in an extrusion molding machine. If some or all of the thermoplastic resin is supplied externally,
1. In this extrusion molding machine, the used ion exchanger (fat and solid waste) is fed to the hopper, and then it is mixed into a certain shape, such as a rod shape, a strand shape, or pellets cut from it. It is molded into a shape and stored in storage containers such as drums.
1. Even when performing melting treatment, these shapes have the advantage that they can be easily collected. Furthermore, since the used ion exchange resin is in the form of granules or powder, it may be directly supplied to the mixing and quantitative supply device.
この固形化処理にｄ３いては、押出成形機の圧縮比など
適当に選択することにより、摩隙発熱で熱可塑性樹脂の
軟化ないしは融解を起こさｌるものであり、運転開始当
初を除き、特に押出成形改のダイス部近傍への外部から
熱の供給を行なわないで済み、あるいは補助加熱程度で
良く省エネルギーの見地からも好ましい。また、この押
出成形機での固形化はＪ３よそ１００〜１９０℃の温度
で行なわれる。In this solidification process (d3), by appropriately selecting the compression ratio of the extrusion molding machine, the thermoplastic resin is softened or melted due to the heat generated by the friction. It is not necessary to supply heat from the outside to the vicinity of the die part of the molding process, or only auxiliary heating is required, which is preferable from the viewpoint of energy saving. Further, solidification in this extrusion molding machine is performed at a temperature of approximately 100 to 190°C.
このｊ、うな処理を１１なうことにより、使用済みイオ
ン交換樹脂は、いわばプラスチックに埋込まれた固形化
物となるので極めてコンパクトでしかｂ ４！ｉられた
固形化物の外表面が融解プラスチックに密に覆われでい
るので水中に浸漬しても安定な物体となり減容効果は格
段に向上させ得る。また、通常は熱可塑性樹脂を外部か
ら導入Ｕずに、固体廃棄物中に含まれるもののみでまか
なうことができるので、減容効果が相剰的に発揮される
ことになる。By carrying out this treatment, the used ion exchange resin becomes a solid substance embedded in the plastic, so it is extremely compact. Since the outer surface of the solidified product is densely covered with molten plastic, it becomes a stable object even when immersed in water, and the volume reduction effect can be greatly improved. In addition, normally, the thermoplastic resin can be used only from what is contained in the solid waste without introducing the thermoplastic resin from the outside, so that the volume reduction effect is mutually exerted.
［実施例］
以下、実施例および参考例に基づき本発明を具体的に説
明する。[Examples] The present invention will be specifically described below based on Examples and Reference Examples.
実施例１〜７および参考例
第１表は、水切りＩｌｌ’！水した使用汎みイオン交換
樹脂（水分４２ｗｔ％）に模擬廃棄物またはポリ塩化ビ
ニルの混合率を変えて混合し、固形化処ｕｌ！ Ｌ、た
場合を示す。実施例１〜７に見られるように投入廃棄物
５０リツトル匍後に対して、固形化処理後のペレットの
体積が１０リットル前後と約１１５の減容になっている
ことが分かる。Examples 1 to 7 and Reference Example Table 1 show the water drainer Ill'! Mix the simulated waste or polyvinyl chloride at different mixing ratios with a general-purpose ion exchange resin (moisture 42 wt%) and solidify it! L indicates the case. As can be seen in Examples 1 to 7, it can be seen that the volume of the pellets after solidification treatment is approximately 10 liters, which is a reduction in volume of approximately 115 liters compared to the 50 liters of input waste.
第１表に示した投入廃棄物の固形化処理はこれらの混合
物をカッターミルで４＃Ｍｌ角以下に粉砕したのら、第
２図に示した如き押出成形機に供給して行なった。第２
図中、１はホッパ、２は定量供給機、３は圧縮スクリュ
ー、４はダイスである。The solidification of the input waste shown in Table 1 was carried out by pulverizing these mixtures with a cutter mill to a size of 4 #Ml square or less, and then feeding the mixture to an extrusion molding machine as shown in FIG. Second
In the figure, 1 is a hopper, 2 is a quantitative feeder, 3 is a compression screw, and 4 is a die.
なお、この圧縮スクリュー３は先端部分（ダイス４に近
い方）の羽根がカッター状になっており、ここで破砕、
粉砕された混合物の混合が充分に行なわれる。The compression screw 3 has a cutter-shaped blade at the tip (closer to the die 4), which crushes and
The milled mixture is thoroughly mixed.
ホッパ１から定量供給機２を経て回転数１５゜ｒｐｍの
圧縮スクリュー３に供給された模擬廃棄物は、圧縮混線
を受けながら、この押出成形機バレル面における発熱に
より、熱可塑性樹脂が軟化ないしは融解状態となり圧縮
スクリュー３のｌｔ’ｉｌ放端側に向い、ここで回転し
ているカッター状部の剪断力を受各プたのらダイス４を
通って外部に連続的に２０木、１２姻径の［］ツラドま
たはス１〜ランド状に送り出されてきたので適当な長さ
に達した時、束ねて引きＩうぎった。これらを放冷した
ところ、実施例１〜７は参考例と同様に互に融着するこ
となく良好な固形化物が得られた。The simulated waste is fed from the hopper 1 to the compression screw 3 at a rotation speed of 15°rpm via the quantitative feeder 2. While being compressed and cross-wired, the thermoplastic resin softens or melts due to the heat generated on the barrel surface of the extruder. In this state, the compression screw 3 faces towards the lt'il distal end side, where it receives the shearing force of the rotating cutter-like part, and passes through the tandem die 4 to the outside continuously to the outside. It was sent out in the form of a tsurad or land, and when it reached a suitable length, it was bundled and pulled. When these were allowed to cool, good solidified products were obtained in Examples 1 to 7 without being fused together, similar to the reference example.
このようにして得られた固形化物の水分はすべで２ｗｔ
％以下であった。また、樹脂混合率が増加するに従い、
固形化物の表面は良好となった。固形化物を窄温水中に
３力月間浸漬したからとの形状、１呈と同じであり、耐
水性が良好なことが分かった。The total water content of the solidified product thus obtained is 2wt.
% or less. In addition, as the resin mixing ratio increases,
The surface of the solidified product was good. It was found that the shape of the solidified product after immersing it in cold water for 3 months was the same as that of 1, indicating good water resistance.
第３３図の装置は、木光明の固形化を行なうのに適した
装置の他の一例であり、固形化処理する混合物をカッタ
ーミルで４ｃｍ角以下に粉砕した後、回転数１６ｐｐｍ
で１５０＃φの２軸パドルスクリユ一型混合定Ｍ供給機
により押出成形機に供給し、８姻φｘ６２個の孔のある
ダイス（１３０Ｍφｘ３５ｍｍ）ハ１１に押出成形する
装置である。The device shown in Fig. 33 is another example of a device suitable for solidifying Mokukomei, and after pulverizing the mixture to be solidified into pieces of 4 cm square or less with a cutter mill, the number of rotations is 16 ppm.
The mixture is supplied to an extrusion molding machine using a 150#φ two-shaft paddle screw type mixing fixed M feeder, and extrusion molded into a die (130Mφ×35 mm) with 8 rows of φ×62 holes.
［発明の効果１
以上説明したごとく、本発明に従えば、廃棄物の処理処
分費はＨＩＧ、分解後処理、直接固化したムのと比較し
て２倍から１０倍以上も経済的でかつ簡易的に使用済み
イオン交換樹脂を減容化処理づることが可能となる。こ
れは初期設備費、運転費、分解剤、固形化剤費等が本発
明の方法において低いためである。特に、処理に経済的
困難性が伴なう放）１性の使用済みイオン交換樹脂およ
び有害重金属ケ含む使用済みイオ“ン交換樹脂の固形化
処理に好適に用いられ、固形化物の物性は良好ぐ、プラ
スデックで固化したものおよびセメントぐ固化した場合
と同じで、放射能等の侵出は少い。[Effect of the invention 1 As explained above, according to the present invention, waste treatment and disposal costs are more than 2 to 10 times more economical and simpler than those of HIG, post-decomposition treatment, and direct solidification. It becomes possible to perform volume reduction treatment on used ion exchange resin. This is because the initial equipment cost, operating cost, decomposer cost, solidifying agent cost, etc. are low in the method of the present invention. In particular, it is suitably used for solidifying used ion exchange resins that are economically difficult to process, such as monomer-based used ion exchange resins and used ion exchange resins that contain harmful heavy metals, and the physical properties of the solidified product are good. It is the same as when solidified with plastic deck or cement, and there is little leaching of radioactivity.
よた、処理が困￥「である固体廃棄物の固形化処理を同
時に行なうことが可能であるのでＪ「常に経済的である
。Furthermore, it is always economical because it is possible to solidify solid waste, which is difficult to process, at the same time.
第１図は本発明の工程を示すフローシート、第２図は一
員体例として使用した押出成形装置の側面図、
第３図は他の具体例である押出成形装置の側面図である
。
１・・・ホッパ、 ２・・・宙吊供給機、３
・・・圧縮スクリュー、 ４・・・ダイス、５・・・２
軸パピルスクリユ一型混合定良供給機。
特許出願人 日 揮 株 式 会 社
特許出願人 株 式 会 社 ア ウ
ル代理人 弁理士 伊 東 辰 雄
代理人 弁理士 伊 東 哲 也
１ ： ホ１．ツノで
弔３図FIG. 1 is a flow sheet showing the process of the present invention, FIG. 2 is a side view of an extrusion molding apparatus used as an example of one piece, and FIG. 3 is a side view of an extrusion molding apparatus as another specific example. 1...Hopper, 2...Suspended feeder, 3
...Compression screw, 4...Dice, 5...2
Shaft papyrus screw type mixing constant feeding machine. Patent applicant: JGC Corporation Patent applicant: JGC Corporation
Agent Patent Attorney Tatsuo Ito Agent Patent Attorney Tetsuya Ito 1: Ho 1. Funeral with horns 3
Claims (1)
、熱可塑性樹脂を固形化材として使用することを特徴と
する使用済みイオン交換樹脂の固形化処理方法。 ２、前記使用済みイオン交換樹脂が放射性イオン交換樹
脂である特許請求の範囲第１項記載の固形化処理方法。 ３、前記固形化材が固体廃棄物に含まれる熱可塑性樹脂
および／または外部から導入される熱可塑性樹脂である
特許請求の範囲第１項または第２項記載の固形化処理方
法。 ４、前記固体廃棄物が放射性固体廃棄物である特許請求
の範囲第３項記載の固形化処理方法。 ５、前記使用済みイオン交換樹脂と固体廃棄物の混合物
を細断ないしは破砕、粉砕して設定サイズに処理した後
、押出成形機にて、１００〜１９０℃の温度条件で圧縮
し、固形化する特許請求の範囲第１項、第２項、第３項
または第４項のいずれか１つに記載の固形化処理方法。[Scope of Claims] 1. A method for solidifying a used ion exchange resin, characterized in that a thermoplastic resin is used as a solidifying material in solidifying the used ion exchange resin. 2. The solidification treatment method according to claim 1, wherein the used ion exchange resin is a radioactive ion exchange resin. 3. The solidification treatment method according to claim 1 or 2, wherein the solidification material is a thermoplastic resin contained in the solid waste and/or a thermoplastic resin introduced from the outside. 4. The solidification treatment method according to claim 3, wherein the solid waste is radioactive solid waste. 5. The mixture of the used ion exchange resin and solid waste is shredded or crushed or crushed to a set size, and then compressed and solidified using an extruder at a temperature of 100 to 190°C. A solidification treatment method according to any one of claims 1, 2, 3, or 4.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60253803A JPH0640159B2 (en) | 1985-11-14 | 1985-11-14 | Method for solidifying radioactive waste |
| US06/814,101 US4772430A (en) | 1985-01-11 | 1985-12-27 | Process for compacting and solidifying solid waste materials, apparatus for carrying out the process and overall system for disposal of such waste materials |
| GB8600435A GB2171638A (en) | 1985-01-11 | 1986-01-09 | Process and apparatus for compacting and solidifying solid waste materials, and overall system for disposal of such waste materials |
| ES551407A ES8700980A1 (en) | 1985-01-11 | 1986-01-10 | Process for compacting and solidifying solid waste materials, apparatus for carrying out the process and overall system for disposal of such waste materials |
| DE19863600537 DE3600537A1 (en) | 1985-01-11 | 1986-01-10 | METHOD FOR COMPRESSING AND STRENGTHENING SOLID WASTE MATERIALS, DEVICE FOR CARRYING OUT THE METHOD AND OVERALL SYSTEM FOR FASTENING SUCH WASTE MATERIALS |
| IT1905986A IT1204431B (en) | 1985-01-11 | 1986-01-10 | PROCESS FOR COMPACTING AND SOLIDIFYING SOLID WASTE MATERIALS, EQUIPMENT FOR CONDUCTING THE PROCESS, AND COMPLEX OF THE PLANT FOR THE ELIMENATION OF SUCH WASTE MATERIALS |
| FR868600292A FR2575943B1 (en) | 1985-01-11 | 1986-01-10 | PROCESS FOR COMPACTING AND SOLIDIFYING SOLID WASTE, APPARATUS FOR IMPLEMENTING SAID WASTE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60253803A JPH0640159B2 (en) | 1985-11-14 | 1985-11-14 | Method for solidifying radioactive waste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62114692A true JPS62114692A (en) | 1987-05-26 |
| JPH0640159B2 JPH0640159B2 (en) | 1994-05-25 |
Family
ID=17256366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60253803A Expired - Lifetime JPH0640159B2 (en) | 1985-01-11 | 1985-11-14 | Method for solidifying radioactive waste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0640159B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006521196A (en) * | 2003-03-27 | 2006-09-21 | テルモゼレクト・アクチェンゲゼルシャフト | Disposal of waste in the form of dust and / or particles |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5090900A (en) * | 1973-12-12 | 1975-07-21 | ||
| JPS5213100A (en) * | 1975-07-15 | 1977-02-01 | Kraftwerk Union Ag | Method and device for removing radioactive synthetic resin waste |
| JPS5426960A (en) * | 1977-08-02 | 1979-02-28 | Japan Organo Co Ltd | Solidifying method for waste containing anion exchange resin |
| JPS57136984A (en) * | 1981-02-20 | 1982-08-24 | Hitachi Ltd | Method for solidification of waste |
| JPS5882200A (en) * | 1981-10-26 | 1983-05-17 | アルケム・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Method of finally processing radioactive or poisonous waste |
-
1985
- 1985-11-14 JP JP60253803A patent/JPH0640159B2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5090900A (en) * | 1973-12-12 | 1975-07-21 | ||
| JPS5213100A (en) * | 1975-07-15 | 1977-02-01 | Kraftwerk Union Ag | Method and device for removing radioactive synthetic resin waste |
| JPS5426960A (en) * | 1977-08-02 | 1979-02-28 | Japan Organo Co Ltd | Solidifying method for waste containing anion exchange resin |
| JPS57136984A (en) * | 1981-02-20 | 1982-08-24 | Hitachi Ltd | Method for solidification of waste |
| JPS5882200A (en) * | 1981-10-26 | 1983-05-17 | アルケム・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Method of finally processing radioactive or poisonous waste |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006521196A (en) * | 2003-03-27 | 2006-09-21 | テルモゼレクト・アクチェンゲゼルシャフト | Disposal of waste in the form of dust and / or particles |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0640159B2 (en) | 1994-05-25 |
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