JPS63223598A - Solidifying processing method of radioactive waste - Google Patents
Solidifying processing method of radioactive wasteInfo
- Publication number
- JPS63223598A JPS63223598A JP5688387A JP5688387A JPS63223598A JP S63223598 A JPS63223598 A JP S63223598A JP 5688387 A JP5688387 A JP 5688387A JP 5688387 A JP5688387 A JP 5688387A JP S63223598 A JPS63223598 A JP S63223598A
- Authority
- JP
- Japan
- Prior art keywords
- unsaturated polyester
- radioactive waste
- polyester resin
- liquid
- acid value
- 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
- 239000002901 radioactive waste Substances 0.000 title claims description 22
- 238000003672 processing method Methods 0.000 title 1
- 239000007788 liquid Substances 0.000 claims description 41
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 30
- 239000002253 acid Substances 0.000 claims description 24
- 229920005989 resin Polymers 0.000 claims description 18
- 239000011347 resin Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 description 14
- 239000002699 waste material Substances 0.000 description 14
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 6
- 238000005341 cation exchange Methods 0.000 description 5
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 4
- 235000010288 sodium nitrite Nutrition 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000032050 esterification Effects 0.000 description 3
- 238000005886 esterification reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical compound CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 description 3
- -1 nuclear power plants Substances 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 229920000180 alkyd Polymers 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 150000001451 organic peroxides Chemical class 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000012857 radioactive material Substances 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229920006305 unsaturated polyester Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005349 anion exchange Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000002928 artificial marble Substances 0.000 description 1
- 150000007514 bases Chemical class 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- ZDHURYWHEBEGHO-UHFFFAOYSA-N potassiopotassium Chemical compound [K].[K] ZDHURYWHEBEGHO-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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】
［産業上の利用分野］
本発明は、放射性廃液および／または使用済樹脂の固化
処理方法に関し、詳しくは、放射性廃液を乾燥粉体化ま
たは脱水処理して得られる放射性廃棄物を熱硬化性樹脂
の一種である液状不飽和ポリエステル樹脂を重合させて
プラスチック固化させる際に、用いる液状不飽和ポリエ
ステル樹脂の酸価を１３以下とすることによって放射性
廃液中の不明成分または使用済樹脂中の残留カチオン交
換基（Ｈ＋）により重合反応を遅延あるいは阻害される
ことなく良好なプラスチック固化体を円滑に得る放射性
廃棄物の固化処理方法に関する。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a method for solidifying radioactive waste liquid and/or used resin, and more specifically, to a method for solidifying radioactive waste liquid and/or used resin. When waste is solidified into plastic by polymerizing liquid unsaturated polyester resin, which is a type of thermosetting resin, by reducing the acid value of the liquid unsaturated polyester resin used to 13 or less, unknown components in radioactive waste liquid or unused substances can be removed. The present invention relates to a method for solidifying radioactive waste, in which a good solidified plastic product can be smoothly obtained without the polymerization reaction being delayed or inhibited by residual cation exchange groups (H+) in the finished resin.
［従来技術］
従来、不飽和ポリエステルをバインダーとして用いた硬
化物は産業用、民生用等に広く利用されている。例えば
、建築関係ではポリバス、クーリングタワー、波板、人
造大理石等、船舶関係では漁船、ボート、ヨツト、水槽
、ブイ等、化学関係では薬品タンク、配管、ダクト等、
レジャー関係ではスキー、釣竿等、その他塗料、接着剤
等の広範囲に渡っている。[Prior Art] Conventionally, cured products using unsaturated polyester as a binder have been widely used for industrial and consumer purposes. For example, in the architectural field, there are polybass, cooling towers, corrugated plates, artificial marble, etc.; in the marine field, there are fishing boats, boats, yachts, water tanks, buoys, etc.; in the chemical field, there are chemical tanks, piping, ducts, etc.
In the leisure field, we manufacture a wide range of products including skis, fishing rods, paints, adhesives, etc.
これら各分野の各製品は工業的に生産されたものである
。すなわち、フィラー（充填剤）として利用されるガラ
ス繊維等も同様に工業的に生産され、その成分も全て確
立されたものであるため、これには不飽和ポリエステル
樹脂の硬化を阻害するような成分は含まれていない。Each product in each of these fields is industrially produced. In other words, the glass fibers used as fillers are similarly produced industrially, and their ingredients are all well-established, so they do not contain ingredients that inhibit the curing of unsaturated polyester resins. is not included.
一方、原子力発電所等の放射性物質を取り扱う施設や事
業所等で発生する放射性廃液および／または使用済樹脂
を処理する場合においても、減容性および得られる固化
体の物性の両面において有利なプラスチック固化処理法
が採用されている。On the other hand, even when processing radioactive waste liquid and/or used resin generated at facilities or business offices that handle radioactive materials such as nuclear power plants, plastics are advantageous in terms of both volume reduction properties and the physical properties of the solidified material obtained. A solidification treatment method is used.
この場合、放射性廃液および／または使用済樹脂は、乾
燥粉体化または脱水処理してから、液状不飽和ポリエス
テル樹脂を用いて重合硬化反応させることにより固化さ
れる。そして、この重合反応における触媒としては有機
過酸化物が用いられ、促進剤としてはコバルトの有機酸
塩や第３級アミン等が用いられている。In this case, the radioactive waste liquid and/or the used resin are dried and powdered or dehydrated, and then solidified by polymerization and curing reaction using a liquid unsaturated polyester resin. An organic peroxide is used as a catalyst in this polymerization reaction, and an organic acid salt of cobalt, a tertiary amine, or the like is used as a promoter.
しかしながら、上述工業製品に用いるフィラー等の場合
と異なり、原子力発電所等で発生する放射性廃液は発生
源が多様なため、多種類の微量または相当量の不明成分
を含んでいる場合が多く、また使用済樹脂はカチオン交
換基（Ｈ９）が多く残留している。したがって、廃液お
よび／または使用済樹脂中に時として触媒自体をあるい
は触媒と促進剤とにより発生した活性ラジカルを消滅さ
せる成分が含まれている場合があるため、上述のような
プラスチック固化処理法によると、不飽和ポリエステル
の重合硬化反応が迅速に進行しないという現象が発生す
る場合がある。しかも、この重合阻害は、上記工業製品
における従来技術によっても抑制することは不可能なも
のである。However, unlike the fillers used in the above-mentioned industrial products, the radioactive waste fluid generated at nuclear power plants etc. has diverse sources, so it often contains unknown components of various types and trace or considerable amounts. Many cation exchange groups (H9) remain in the used resin. Therefore, waste liquid and/or used resin may sometimes contain components that quench active radicals generated by the catalyst itself or by the catalyst and promoter. In this case, a phenomenon may occur in which the polymerization and curing reaction of the unsaturated polyester does not proceed quickly. Moreover, this inhibition of polymerization cannot be suppressed even by the conventional techniques used in the above-mentioned industrial products.
そこで、これを解決するものとして、本発明者らは先に
、放射性廃液中の上記不明成分である亜硝酸根（ＮＯ２
−）等の還元性物質を酸化して無害化する方法を案出し
た（特願昭６１−２２６２５５号）。しかし、この方法
は、廃液のＣＯＤに応じた酸化剤を添加するという前処
理を必要とする。Therefore, in order to solve this problem, the present inventors first investigated the above-mentioned unknown component nitrite radical (NO2) in radioactive waste liquid.
devised a method of oxidizing reducing substances such as However, this method requires pretreatment of adding an oxidizing agent depending on the COD of the waste liquid.
使用済樹脂については特開昭５３−２２１７４号公報に
開示されているように残留カチオン交換基を処理するた
めに塩基性化合物を作用させるという前処理を必要とす
る。As disclosed in JP-A-53-22174, used resins require pretreatment in which a basic compound is applied to remove residual cation exchange groups.
本発明はこのような問題に鑑み、放射性廃棄物から良好
なプラスチック固化体を迅速かつより簡便に得ることが
できる放射性廃棄物の固化処理方法を提供することを目
的とする。In view of these problems, an object of the present invention is to provide a method for solidifying radioactive waste that can quickly and easily obtain a good solidified plastic body from radioactive waste.
［問題点を解決するための手段および作用］本発明者ら
はさらに上記目的に沿って鋭意検討した結果、不飽和ポ
リエステル樹脂の主成分であって、
で示されるような不飽和アルキッドの末端基である一Ｃ
；ＯＯＨがＮａＮＯ２，（Ｃａ）Ｉ＋＋）２Ｎ８２ＮＯ
２等の亜硝酸根（Ｎ０２−）を有する亜硝酸塩と反応し
て−ＣＯＯＮａや−ｆｌ：００ （ＣｓＨ＋ １）２Ｎ
ｌ’１２となることによりフリーとなった亜硝酸根（Ｎ
Ｏ２−）が重合反応を阻害していること、そしてこの亜
硝酸根の発生は液状不飽和ポリエステル樹脂の酸価をで
きるだけ小さくすることによって抑えることができ、し
たがって正常な重合硬化反応を可能にすることを見出し
、またさらに使用済樹脂についても残留カチオン交換基
がいかに多くても（１００％残留していても）同様であ
ることを見出し、本発明をするに至った。[Means and effects for solving the problem] As a result of further intensive studies in accordance with the above objectives, the present inventors found that the terminal group of the unsaturated alkyd, which is the main component of the unsaturated polyester resin, is is one C
;OOH is NaNO2, (Ca)I++)2N82NO
Reacts with nitrite having a 2nd grade nitrite group (N02-) to form -COONa and -fl:00 (CsH+ 1)2N
The nitrite root (N
O2-) inhibits the polymerization reaction, and the generation of nitrite radicals can be suppressed by reducing the acid value of the liquid unsaturated polyester resin as much as possible, thus allowing normal polymerization and curing reactions. They also found that the same holds true for used resins, no matter how many residual cation exchange groups there are (even if 100% remain), leading to the present invention.
すなわち本発明は、放射性廃液および／または使用済樹
脂を乾燥粉体化または脱水処理して得られる放射性廃棄
物を酸価が１３以下の液状不飽和ポリエステル樹脂を重
合させてプラスチック固化することを特徴とする放射性
廃棄物の固化処理方法である。That is, the present invention is characterized in that radioactive waste obtained by drying and powdering or dehydrating radioactive waste liquid and/or used resin is solidified into plastic by polymerizing liquid unsaturated polyester resin with an acid value of 13 or less. This is a method for solidifying radioactive waste.
本発明により処理される放射性廃棄物は、原子力発電所
等の放射性物質を取り扱う施設、事業所等から発生する
廃液および／または使用済樹脂を乾燥粉体化または脱水
処理したものであり、特に液体廃棄物中には主成分の硫
酸ナトリウムに加えて重合硬化反応を阻害する亜硝酸基
地多種類の不明成分が含まれている場合がある。ただし
、主成分である硫酸ナトリウムは、バインダーである液
状不飽和ポリエステル樹脂の硬化には全く影響を与えな
い。The radioactive waste to be treated according to the present invention is waste liquid and/or used resin generated from nuclear power plants and other facilities that handle radioactive materials, business offices, etc., which have been dried and powdered or dehydrated. In addition to the main component, sodium sulfate, the waste may contain many unknown components, including nitrite bases that inhibit polymerization and curing reactions. However, the main component, sodium sulfate, has no effect on the curing of the liquid unsaturated polyester resin, which is the binder.
一方、使用済樹脂は残留しているカチオン交換基（Ｈｏ
）が重合反応を阻害する。ただし、アニオン交換基は重
合反応を阻害しない。On the other hand, the used resin has residual cation exchange groups (Ho
) inhibits the polymerization reaction. However, the anion exchange group does not inhibit the polymerization reaction.
本発明においては、このような放射性廃棄物を、酸価が
１３以下の液状不飽和ポリエステル樹脂を固化剤（バイ
ンダー）として用いてプラスチック固化する。In the present invention, such radioactive waste is solidified into plastic using a liquid unsaturated polyester resin having an acid value of 13 or less as a solidifying agent (binder).
上記酸価はＪＩＳに６９０１で規定されているように液
状不飽和ポリエステル樹脂のエステル化の度合を示すも
のであり、樹脂１ｇ中に含まれるカルボキシル基（−Ｃ
ｏｏｌ ）を中和するのに必要な力性カリ（ＫＯＨ）の
ミリグラム数として定義される（定量方法については、
“プラスチック材料講座［１０］” ホ！、Ｊ エステ
）Ｉｉ樹脂Ｊ （昭５４．１．１０ 、ｍ ８ 版、
日刊工業新聞社列）”°の第６２頁参照）。一般に、液
状不飽和ポリエステル樹脂の酸価は２０〜５０の間にあ
るが、この酸価が小さいほど上記アルキッドの末端基−
にＯＯＨの数が少なく、したがって、上記亜硝酸根の発
生を少なくし重合硬化反応をより円滑にする。The above acid value indicates the degree of esterification of liquid unsaturated polyester resin as specified in JIS 6901, and indicates the degree of esterification of the liquid unsaturated polyester resin, and the acid value indicates the degree of esterification of the liquid unsaturated polyester resin.
defined as the number of milligrams of potassium potassium (KOH) required to neutralize (for quantitative methods,
“Plastic materials course [10]” Ho! , J Esthetics) Ii Resin J (Showa 54.1.10, m8 edition,
(Refer to page 62 of the Nikkan Kogyo Shimbun series).Generally, the acid value of liquid unsaturated polyester resin is between 20 and 50, but the lower the acid value, the lower the terminal group of the alkyd.
The number of OOH is small, therefore, the generation of the above-mentioned nitrite radicals is reduced and the polymerization curing reaction is made smoother.
重合硬化反応時の開始剤としてはメチルエチルケトンパ
ーオキシド等の有機過酸化物が用いられ、また促進剤と
してはナフテン酸コバルト等のコバルト有機酸塩等が用
いられる。An organic peroxide such as methyl ethyl ketone peroxide is used as an initiator during the polymerization curing reaction, and a cobalt organic acid salt such as cobalt naphthenate is used as an accelerator.
このようにして得られた本発明に係るプラスチック固化
体は、強度や耐水性等の物性が安定したものとなる。The plastic solidified body according to the present invention thus obtained has stable physical properties such as strength and water resistance.
［実施例］
以下、実施例および比較例に基づぎ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 Comparative Examples.
及五里上二二
酸価が１．０．１．３．１．６ 、２．０および９．１
の液状不飽和ポリエステル樹脂各３８ｇのそれぞれにつ
いてＮａＮＯ２の含量が０．９重量％の濃縮廃液を模擬
した模擬廃棄物粉体６２ｇを充分混合してから、これら
それぞれにメチルエチルケトンパーオキシド０．７６ｇ
およびナフテン酸コバルト０．１９ｇを添加・混合して
固化体を得る操作を行なった。The acid value is 1.0.1.3.1.6, 2.0 and 9.1.
For each 38 g of liquid unsaturated polyester resin, 62 g of a simulated waste powder simulating a concentrated waste liquid with a NaNO2 content of 0.9% by weight was thoroughly mixed, and then 0.76 g of methyl ethyl ketone peroxide was added to each of the 38 g of liquid unsaturated polyester resin.
Then, 0.19 g of cobalt naphthenate was added and mixed to obtain a solidified product.
７日後、これにより得られた５つの固化体についてデュ
ロメータ硬度を計測した。After 7 days, the durometer hardness of the five solidified bodies thus obtained was measured.
この結果を第１図のグラフに示す。同図のグラフの横軸
は用いた液状不飽和ポリエステル樹脂の酸価（＋ｎｇ力
性カリ／ｇ樹脂）、縦軸は得られた固化体のデュロメー
タ硬度を示す。The results are shown in the graph of FIG. The horizontal axis of the graph in the figure shows the acid value (+ng strength potassium/g resin) of the liquid unsaturated polyester resin used, and the vertical axis shows the durometer hardness of the obtained solidified product.
実施例６〜８
液状不飽和ポリエステル樹脂の酸価を１．０．１．６お
よび２．０の３種類とし、かつ廃棄物粉体中のＮａＮＯ
２含量を１０．０重量％とじた以外は実施例１と同様の
混合固化操作を行なった。Examples 6 to 8 Three types of acid values of liquid unsaturated polyester resin, 1.0, 1.6 and 2.0, and NaNO in waste powder
The mixing and solidifying operation was carried out in the same manner as in Example 1, except that the 2 content was reduced to 10.0% by weight.
この結果を第１図のグラフに示す。The results are shown in the graph of FIG.
去ｊｌｌｉ （＋ｄ且二二匹
酸価が１．６および９．１の液状不飽和ポリエステル樹
脂各４８ｇのそれぞれについて使用済樹脂を模擬し、粉
状樹脂（商品名パウデックス）をカチオン／アニオン比
が２／１として乾燥粉体化した模擬廃棄物５２ｇを充分
混合してから、それぞれにメチルエチルケトンパーオキ
シド０．２６ｇおよびナフテン酸コバルト０．２８ｇを
添加・混合して固化体を得る操作を行なった。48 g of liquid unsaturated polyester resin with an acid value of 1.6 and 9.1 was simulated as a used resin, and powdered resin (trade name Powdex) was mixed with a cation/anion ratio of 48 g each. After thoroughly mixing 52 g of the simulated waste dried and powdered as 2/1, 0.26 g of methyl ethyl ketone peroxide and 0.28 g of cobalt naphthenate were added and mixed to obtain a solidified product.
７日後、２つの固化体についてデュロメータ硬度を計測
した。Seven days later, the durometer hardness of the two solidified bodies was measured.
この結果を第１図のグラフに示す。The results are shown in the graph of FIG.
比較例１〜２
液状不飽和ポリエステル樹脂の酸価を１７．６および１
８．６の２種類とした以外は実施例１と同様の混合同化
操作を行なった。Comparative Examples 1-2 The acid value of liquid unsaturated polyester resin was 17.6 and 1
The same mixing and assimilation operation as in Example 1 was performed except that two types of 8.6 were used.
この結果を第１図のグラフに示す。The results are shown in the graph of FIG.
比較例３
液状不飽和ポリエステル樹脂の酸価を１８．６の１種類
のみとし、かつ廃棄物粉体中めＮａＮ０□含量を１０．
０重量％とじた以外は実施例１と同様の混合固化操作を
行なった。Comparative Example 3 The acid value of the liquid unsaturated polyester resin was 18.6, and the NaN0□ content in the waste powder was 10.
The same mixing and solidifying operation as in Example 1 was performed except that 0% by weight was bound.
この結果を第１図のグラフに示す。The results are shown in the graph of FIG.
匿箆玉１
液状不飽和ポリエステル樹脂の酸価を１７．６の１種類
のみとし、実施例９と同様の混合固化操作を行なった。1. The same mixing and solidifying operation as in Example 9 was carried out using only one type of liquid unsaturated polyester resin having an acid value of 17.6.
この結果を第１図のグラフに示す。The results are shown in the graph of FIG.
以上第１図から、固化操作後７日目の固化体硬度の目標
を２５以上とすると、液状不飽和ポリエステル樹脂の酸
価は１３以下であれば良いことが判断できる。From FIG. 1 above, it can be determined that if the target hardness of the solidified material on the 7th day after the solidification operation is 25 or more, the acid value of the liquid unsaturated polyester resin should be 13 or less.
また、ＮａＮ０ｚの含量が０．９重量％と１０重量％の
場合の結果を比較すると、同一酸価、すなわち同一の液
状不飽和ポリエステル樹脂を用いた場合の７日後のデュ
ロメータ硬度が２〜３程度しか異ならないことがわかる
。現時点での試験範囲は廃棄物粉体中のＮａＮ０□濃度
が０〜ｌＯ重量％に対してであるためこれが１０重量％
を超えるような廃棄物粉体については定かではないが、
このことから判断すると、ＮａＮ０□の含量が１００重
量％であっても、酸価を１０以下程度とすることによっ
て固化体硬度を２５以上とすることが可能であると判断
できる。Furthermore, when comparing the results when the content of NaN0z is 0.9% by weight and 10% by weight, the durometer hardness after 7 days when using the same acid value, that is, the same liquid unsaturated polyester resin, is about 2 to 3. It turns out that there is only a difference. The current test range is for the NaN0□ concentration in waste powder to be 0 to 10% by weight, so this is 10% by weight.
Although it is not certain about waste powder that exceeds
Judging from this, it can be determined that even if the content of NaN0□ is 100% by weight, it is possible to make the solidified body hardness 25 or more by setting the acid value to about 10 or less.
参考例ｌ
ＮａＮＯ２を全く含まない廃棄物粉体を用いかつ種々の
酸価の液状不飽和ポリエステル樹脂について行なった以
外は実施例１と同様の混合固化操作を行なった。Reference Example 1 The same mixing and solidifying operation as in Example 1 was carried out, except that waste powder containing no NaNO2 was used and liquid unsaturated polyester resins of various acid values were used.
この場合、得られた固化体の７日後のデュロメータ硬度
は、用いた液状不飽和ポリエステル樹脂の酸価にかかわ
らず８０前後の値を示した。In this case, the durometer hardness of the obtained solidified product after 7 days showed a value of around 80 regardless of the acid value of the liquid unsaturated polyester resin used.
参考例２
実施例９で用いた模擬廃棄物を、乾燥粉体化前にＮａＯ
ＨでｐＨ→１０となるように調整し、乾燥粉体化した粉
体を用い、かつ種々の酸価の液状不飽和ポリエステル樹
脂について行なった以外は実施例９と同様の操作を行な
った。Reference Example 2 The simulated waste used in Example 9 was treated with NaO before drying and powdering.
The same operation as in Example 9 was carried out, except that the pH was adjusted to 10 with H, dry powder was used, and liquid unsaturated polyester resins of various acid values were used.
この場合、得られた固化体の７日後のデュロメータ硬度
は、用いた液状不飽和ポリエステル樹脂の酸価にかかわ
らず８０〜９０の硬度を示した。In this case, the durometer hardness of the obtained solidified product after 7 days was 80 to 90 regardless of the acid value of the liquid unsaturated polyester resin used.
［発明の効果］
以上説明したように本発明によれば、放射性廃液および
／または使用済樹脂を乾燥粉体化または脱水処理して得
られる放射性廃棄物と液状不飽和ポリエステル樹脂の重
合硬化反応を、該放射性廃棄物中にＮａＮＯ２等の重合
阻害物質を多量に含んでいてもこれらを酸化させるため
の前処理をする必要なしに、迅速かつ簡便に一定の条件
で固化することができる。[Effects of the Invention] As explained above, according to the present invention, a polymerization curing reaction between radioactive waste obtained by drying and powdering or dehydrating radioactive waste liquid and/or used resin and liquid unsaturated polyester resin can be carried out. Even if the radioactive waste contains a large amount of polymerization inhibitors such as NaNO2, it can be solidified quickly and easily under certain conditions without the need for pretreatment to oxidize them.
第１図は、液状不飽和ポリエステル樹脂の酸価に対する
固化体の硬度の関係を示すグラフである。FIG. 1 is a graph showing the relationship between the acid value of a liquid unsaturated polyester resin and the hardness of a solidified product.
Claims (1)
または脱水処理して得られる放射性廃棄物を酸価が１３
以下の液状不飽和ポリエステル樹脂を重合させてプラス
チック固化することを特徴とする放射性廃棄物の固化処
理方法。1. Radioactive waste obtained by drying and powdering or dehydrating radioactive waste liquid and/or used resin with an acid value of 13
A method for solidifying radioactive waste, characterized by polymerizing the following liquid unsaturated polyester resin and solidifying it into plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62056883A JPH0758358B2 (en) | 1987-03-13 | 1987-03-13 | Method for solidifying radioactive waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62056883A JPH0758358B2 (en) | 1987-03-13 | 1987-03-13 | Method for solidifying radioactive waste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63223598A true JPS63223598A (en) | 1988-09-19 |
| JPH0758358B2 JPH0758358B2 (en) | 1995-06-21 |
Family
ID=13039817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62056883A Expired - Lifetime JPH0758358B2 (en) | 1987-03-13 | 1987-03-13 | Method for solidifying radioactive waste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0758358B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63168599A (en) * | 1986-12-30 | 1988-07-12 | 株式会社東芝 | Solidifying processing method of radioactive waste |
-
1987
- 1987-03-13 JP JP62056883A patent/JPH0758358B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63168599A (en) * | 1986-12-30 | 1988-07-12 | 株式会社東芝 | Solidifying processing method of radioactive waste |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0758358B2 (en) | 1995-06-21 |
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