JPH0382999A - Incineration method and incinerator of spent ion exchange resin - Google Patents
Incineration method and incinerator of spent ion exchange resinInfo
- Publication number
- JPH0382999A JPH0382999A JP21746689A JP21746689A JPH0382999A JP H0382999 A JPH0382999 A JP H0382999A JP 21746689 A JP21746689 A JP 21746689A JP 21746689 A JP21746689 A JP 21746689A JP H0382999 A JPH0382999 A JP H0382999A
- Authority
- JP
- Japan
- Prior art keywords
- exchange resin
- ion exchange
- incinerating
- used ion
- resin
- 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
- 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 84
- 239000003456 ion exchange resin Substances 0.000 title claims abstract description 71
- 229920003303 ion-exchange polymer Polymers 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims description 34
- 239000011347 resin Substances 0.000 claims abstract description 45
- 229920005989 resin Polymers 0.000 claims abstract description 45
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 15
- 239000011593 sulfur Substances 0.000 claims abstract description 15
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000002328 demineralizing effect Effects 0.000 claims abstract description 7
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 6
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 6
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 5
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract 2
- 238000005342 ion exchange Methods 0.000 claims description 26
- 239000003729 cation exchange resin Substances 0.000 claims description 19
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 claims description 9
- 125000000542 sulfonic acid group Chemical group 0.000 claims description 9
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 8
- 239000003957 anion exchange resin Substances 0.000 claims description 8
- 230000008929 regeneration Effects 0.000 claims description 8
- 238000011069 regeneration method Methods 0.000 claims description 8
- 238000005115 demineralization Methods 0.000 claims description 6
- -1 hydrogen ions Chemical class 0.000 claims description 5
- 150000001339 alkali metal compounds Chemical class 0.000 claims description 4
- 150000001341 alkaline earth metal compounds Chemical class 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 3
- 229910001413 alkali metal ion Inorganic materials 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 229910021645 metal ion Inorganic materials 0.000 claims 1
- 230000001172 regenerating effect Effects 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 27
- 150000001768 cations Chemical class 0.000 abstract description 9
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 abstract description 9
- 239000007787 solid Substances 0.000 abstract description 5
- 239000002002 slurry Substances 0.000 abstract description 2
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 abstract 2
- 229910052815 sulfur oxide Inorganic materials 0.000 description 20
- 239000011734 sodium Substances 0.000 description 15
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 14
- 229910052708 sodium Inorganic materials 0.000 description 14
- 239000007789 gas Substances 0.000 description 11
- 125000002091 cationic group Chemical group 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 150000001450 anions Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229940023913 cation exchange resins Drugs 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010344 co-firing Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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焼却方法及び装置
にかかり、特にイオン交換基に硫黄分を含有する陽イオ
ン交換樹脂の焼却に際し硫黄酸化物（ＳＯＸ）の発生を
低減するのに好適な焼却方法及び装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method and apparatus for incinerating used ion exchange resins, and in particular, cation exchange resins containing sulfur in their ion exchange groups can be used to reduce sulfur oxidation. The present invention relates to an incineration method and apparatus suitable for reducing the generation of SOX.
原子力発電所で発生する使用済イオン交換樹脂は、現在
敷地内に貯蔵されており、その処理方法はプラスチック
同化法あるいは焼却法等が有力である。この中で、プラ
スチック同化法は、イオン交換樹脂の水分を遠心薄膜乾
燥機で飛ばし、乾燥粉体化後、同化系にて同化剤である
プラスチックと混練し固化体にして処理する方式である
。プラスチック固化法の年間の樹脂廃棄物発生量は、沸
騰水型原子力発電プラントの１１００Ｍ Ｗ ｅ １！
！準タイプで、２００℃ドラム缶が４００本程度（充填
量は２００Ｑトラム缶］本に樹脂が１００ｋｇである。Spent ion exchange resin generated at nuclear power plants is currently stored on-site, and the most likely methods for disposing of it include plastic assimilation or incineration. Among these, the plastic assimilation method is a method in which the water content of the ion exchange resin is removed using a centrifugal thin film dryer, and after drying and powdering, the resin is kneaded with plastic, which is an assimilating agent, in an assimilation system to form a solidified product. The annual amount of resin waste generated by the plastic solidification method is 1100M W e 1!
! It is a semi-type, with about 400 200°C drums (filling capacity is 200Q tram cans) and 100kg of resin.
）発生する。)Occur.
一方、焼却法では樹脂を可燃性雑固体と混焼する方式で
ある。樹脂は可燃性であるためプラスチック固化法と比
べ減容性が４０分の１以下と高く、年間の廃棄物発生量
は、２００Ｑドラム缶で１０本程度に大幅減容できる。On the other hand, the incineration method involves co-firing resin with combustible miscellaneous solids. Since resin is flammable, the volume reduction is less than 1/40 compared to the plastic solidification method, and the amount of waste generated per year can be significantly reduced to about 10 200Q drums.
この焼却法に関しては、例えば特開昭４．９−７２６０
０号公報等に記載されたものがある。Regarding this incineration method, for example, Japanese Patent Application Laid-open No. 4.9-7260
Some are described in Publication No. 0, etc.
上記従来技術の中で、プラスチック同化法は、沸騰水型
原子力発電プラントの１１００ＭＷｅ標準タイプで、樹
脂廃棄物発生量が年間２００Ｑドラム缶として４． Ｏ
Ｏ程度度あるため、減容性の高い焼却法が期待されてき
た。しかし、イオン交換樹脂は、陽イオン交換樹脂（カ
チオン樹脂）のイオン交換基がスルホン酸型であるため
、焼却時に排ガス中に硫黄酸化物が発生し、焼却炉排ガ
ス系材料の腐食原因となり、大量焼却が困難となってい
る。そのため、イオン交換樹脂そのものの材質変更が検
討されている。これは、イオン交換樹脂のイオン交換基
を硫黄分を含まないものに変更する方式であるが、現状
性能面では良好な結果を示しているが、使用後の移送・
貯蔵面で検討の余地があり、実用化にはいたっていない
。Among the above-mentioned conventional technologies, the plastic assimilation method is used for the 1100 MWe standard type of boiling water nuclear power generation plant, and the amount of resin waste generated is 4.5 times per year as 200 Q drums. O
Since there is a certain degree of O content, there have been expectations for an incineration method with high volume reduction properties. However, since the ion exchange group of the cation exchange resin (cation resin) is of the sulfonic acid type, sulfur oxides are generated in the exhaust gas during incineration, causing corrosion of the incinerator exhaust gas materials, and large amounts of sulfur oxides are generated. Incineration is becoming difficult. Therefore, changing the material of the ion exchange resin itself is being considered. This is a method of changing the ion exchange group of the ion exchange resin to one that does not contain sulfur, and although it is currently showing good results in terms of performance, it is difficult to transport the resin after use.
There is still room for consideration in terms of storage, and it has not yet been put into practical use.
本発明の目的は、現状および今後発生し貯蔵される使用
済イオン交換樹脂（イオン交換基に硫黄分を含有するイ
オン交換樹脂を含む使用済イオン交換樹脂）を、排ガス
系への硫黄酸化物の発生を抑制して焼却炉で焼却可能に
することにある。The purpose of the present invention is to reduce the amount of sulfur oxides into the exhaust gas system by using used ion exchange resins (including ion exchange resins containing sulfur content in the ion exchange group) currently being generated and stored in the future. The aim is to suppress the generation of waste and make it possible to incinerate it in an incinerator.
上記目的を達成するため、本発明は使用済イオン交換樹
脂の陽イオン交換樹脂を硫黄酸化物の出ないものに前処
理して焼却処理するようにしたものである。In order to achieve the above object, the present invention pre-treats the cation exchange resin used as a used ion exchange resin so that it does not generate sulfur oxides, and then incinerates it.
即ち、本発明はイオン交換基に硫黄分を含有する陽イオ
ン交換樹脂を含む使用済イオン交換樹脂を焼却する際に
、イオン交換基が硫酸塩となるようにアルカリ金属化合
物またはアルカリ土類金属化合物を使用済イオン交換樹
脂に添加した後に該使用済イオン交換樹脂を焼却処理す
ることにより排ガス系への硫黄酸化物の発生を抑制した
ものである。That is, when incinerating a used ion exchange resin containing a cation exchange resin containing sulfur content in the ion exchange group, the present invention incinerates an alkali metal compound or an alkaline earth metal compound so that the ion exchange group becomes a sulfate. The generation of sulfur oxides into the exhaust gas system is suppressed by adding the ion exchange resin to the used ion exchange resin and then incinerating the used ion exchange resin.
さらに、本発明はイオン交換樹脂が含有する硫黄分に対
し、硫酸塩となるのに必要な当量以上のアルカリ金属化
合物またはアルカリ土類金属化合物を添加して焼却する
ことにより、硫黄酸化物の発生を大幅に低減するように
したものである。Furthermore, the present invention generates sulfur oxides by adding to the sulfur content of the ion exchange resin an alkali metal compound or alkaline earth metal compound in an amount equal to or more than the equivalent amount required to form a sulfate and incinerating the sulfur content. It is designed to significantly reduce the
原子力発電プラントで使用しているイオン交換樹脂のカ
チオン樹脂は、そのほとんどが基本的にジビニルベンゼ
ンの重合体にイオン交換基のスルホン酸を配位させた、
次式の構造のものを使用している。Most of the cation exchange resins used in nuclear power plants are basically divinylbenzene polymers coordinated with sulfonic acid as an ion exchange group.
The structure of the following formula is used.
カチオン樹脂を焼却すると、（２）式に示す反応により
イオン交換基のスルホン基が、ベンゼン環の側鎖のとこ
ろで熱により切断され、ＳＯｘとして発生する。When the cationic resin is incinerated, the sulfone group of the ion exchange group is thermally cleaved at the side chain of the benzene ring by the reaction shown in formula (2), and SOx is generated.
Ｒ−Ｓ ＯａＨ十ｍ ＯＺ→Ｓ○８↑十ｎｏ２↑＋ＱＨ
ｚ○↑・・・・・・（２）（ここでＲはイオン交換樹脂
の母体合成樹脂であり、ｍ、ｎ、Ｑは適当な整数である
）このイオン交換基に、アルカリ金属またはアルカリ土
類金属のたとえばナトリウムを吸着させ（イオン交換基
の水素イオンとナトリウムイオンを交換させる）、更に
硫酸塩として必要な当量以上のナトリウムを樹脂中に添
加して樹脂を焼却すると、（３）式に示す反応によりイ
オン交換基が硫酸塩として灰中に残留し、排ガスへのＳ
Ｏｘ発生率が低減される。R-S OaH 10m OZ→S○8↑10no2↑+QH
z○↑・・・・・・(2) (Here, R is the base synthetic resin of the ion exchange resin, and m, n, and Q are appropriate integers.) This ion exchange group has an alkali metal or alkaline earth When a similar metal such as sodium is adsorbed (the hydrogen ion of the ion exchange group is exchanged with the sodium ion), more than the equivalent amount of sodium required as a sulfate is added to the resin, and the resin is incinerated, Equation (3) is obtained. Due to the reaction shown, ion exchange groups remain in the ash as sulfates, and S is released into the exhaust gas.
Ox generation rate is reduced.
Ｒ−８○ｓＮａ＋ＮａＯＨ＋ｍｏｘ
→ＮａｚＳ○４↓＋ｎｃＯ２↑＋ＱＨｚ○↑・・・・・
・（３）〔実施例〕
以下、本発明の一実施例を第１図により説明する。原子
カプラント等の復水脱塩塔からの使用済イオン交換樹脂
は使用済樹脂受はタンク１に収容されている。使用済イ
オン交換樹脂はカチオン交換榴脂（スルホン酸基をイオ
ン交換基とするイオン交換樹脂）とアニオン交換樹脂の
混合状態か若しくは分離塔において陽イオン交換樹脂に
分離されたものとなっている（通常は混合状態となって
いる）６タンク１に受けられた使用済イオン交換樹脂は
、スラリー濃度５心程度に水がデカントされる６デカン
ト後、樹脂は、脱水器供給ポンプ２で遠心脱水器３に供
給され、含水４！５０％程度に処理後、水分計４を経て
混合機５に送られる。ここで、水分計の測定値に基づき
カチオン樹脂量を算出し、硫黄分が硫酸塩となるのに見
合うアルカリ金凧またはアルカリ土類金属のたとえば水
酸化ナトリウム２５％溶液を、添加タンク６から添加ポ
ンプ７により添加し、混合機５で均一に混合する。この
樹脂を焼却炉樹脂ホッパー８に送り、他の可燃性雑固体
と同時に焼却炉９で混合焼却する。R-8○sNa+NaOH+mox →NazS○4↓+ncO2↑+QHz○↑・・・・・・
-(3) [Example] An example of the present invention will be described below with reference to FIG. A used ion exchange resin from a condensate demineralization tower such as an atomic couplant is stored in a tank 1. The used ion exchange resin is either a mixture of cation exchange resin (ion exchange resin whose ion exchange group is a sulfonic acid group) and anion exchange resin, or it is separated into cation exchange resin in a separation column ( (usually in a mixed state) 6 The used ion exchange resin received in tank 1 is decanted with water to a slurry concentration of about 5 cores. After being processed to a water content of about 4.50%, it is sent to a mixer 5 via a moisture meter 4. Here, the amount of cation resin is calculated based on the measured value of the moisture meter, and a 25% solution of alkali gold kite or alkaline earth metal, such as sodium hydroxide, whose sulfur content is equivalent to sulfate is added from the addition tank 6. Add by pump 7 and mix uniformly by mixer 5. This resin is sent to an incinerator resin hopper 8, where it is mixed and incinerated in an incinerator 9 together with other combustible miscellaneous solids.
燃焼排ガスは、セラミックフィルタ１１．排ガスフィル
タ］、２を経て、ブロア１３で掛部１４からＤｌ：出さ
れる。The combustion exhaust gas is passed through a ceramic filter 11. Exhaust gas filter], 2, and is discharged from the hanging part 14 by the blower 13.
カチオン樹脂にナトリウムを吸着および添加したときの
効果を第３図で説明する。従来のＨ型カチオン樹脂（イ
オン交換基に水素イオンが吸着したままの状態）では、
イオン交換基の硫黄分の大部分が焼却により、ＳＯｘと
して発生するのに対し、ナトリウム型カチオン樹脂（イ
オン交換基にナトリウムイオン吸着した状態）になった
イオン交換樹脂は、ＳＯｘ発生率が半分以下に低下する
。The effect of adsorbing and adding sodium to a cationic resin will be explained with reference to FIG. With conventional H-type cation resins (in which hydrogen ions remain adsorbed to the ion exchange groups),
Most of the sulfur content in ion exchange groups is generated as SOx when incinerated, whereas ion exchange resins that have become sodium type cation resins (sodium ions adsorbed to ion exchange groups) generate less than half the SOx generation rate. decreases to
更に、ナトリウムをカチオン樹脂が持っている硫黄分に
対し、硫酸す１〜リウムとして必要な当量以上を添加す
ると、ＳＯｘ発生率が大幅に低減する。Furthermore, when sodium is added in an amount equal to or more than the required amount of sodium to sulfuric acid to the sulfur content of the cationic resin, the SOx generation rate is significantly reduced.
これは、（４）式のようにナトリウム型カチオン樹脂で
はイオン交換基が１価のため２価の硫酸塩に対し上分子
当り１個ナトリウムが少なく、ＳＯｘが焼却時の熱反応
により半分程度発生するのに対し、（５）式のようにカ
チオン樹脂が持っている硫黄分に対し硫酸ナトリウムと
して必要なナトリウムを当量以上添加すると、マスバラ
ンスとしてイオン交換基が硫酸塩になりやすく、ＳＯｘ
移行分が減った結果である。また、ガＣ却温度も低い方
が、反応速度の関係から硫酸塩となりやす＜ＳＯｘ発生
率は低くなる傾向にある。This is because, as shown in formula (4), sodium-type cationic resins have monovalent ion exchange groups, so there is one less sodium per upper molecule than divalent sulfate, and about half of the SOx is generated due to the thermal reaction during incineration. On the other hand, if more than the equivalent amount of sodium is added as sodium sulfate to the sulfur content of the cationic resin as shown in equation (5), the ion exchange group tends to become sulfate as a mass balance, and SOx
This is the result of a reduction in the amount transferred. Furthermore, the lower the gas cooling temperature, the easier it is to form sulfates due to the reaction rate.<SOx generation rate tends to be lower.
２（Ｒ−８（）＋Ｎａ）＋ｍＯ２
→Ｎａｚｓｏ、↓＋Ｓ○３↑＋ｎＣ○２＋ＱＨｚ○・−
・・・（４’）Ｒ−ＳＯ８Ｎａ＋ＮａＯＨ＋ｍＯｘ
→Ｎ ａ ｘ Ｓ Ｏ４↓十ｎＣ○２＋ｆｌＨ２０・・
・・・・・・・・・・・・・・（５）ナトリウム添加割
合とＳＯｘ発生率の関係を第４図で説明する。樹脂を焼
却した時のＳＯｘ発生率は、ナトリウム添加量が増える
とともに減少するが２から３倍当量以上で、はぼ平衡に
達する。2(R-8()+Na)+mO2 →Nazso, ↓+S○3↑+nC○2+QHz○・-
...(4')R-SO8Na+NaOH+mOx →N a x SO4↓tennC○2+flH20...
(5) The relationship between the sodium addition rate and the SOx generation rate will be explained with reference to FIG. 4. The SOx generation rate when resin is incinerated decreases as the amount of sodium added increases, but almost reaches equilibrium when the amount of sodium added is 2 to 3 times the equivalent or more.
焼却温度も８００℃より７５０℃の低温条件の方が５Ｃ
）ｘ発生率は低くなる。The incineration temperature is 5C lower at 750℃ than at 800℃.
)x incidence will be lower.
なお、ナトリウム添加量はイオン交換樹脂がカチオン樹
脂とアニオン樹脂が混合状態、またはカチオン樹脂単独
状態によらず、カチオン樹脂のイオン交換基に対し当量
以上の添加すれば良い。Note that the amount of sodium to be added may be equal to or more than the equivalent amount to the ion exchange group of the cation resin, regardless of whether the ion exchange resin is a mixture of a cation resin and an anion resin or a cation resin alone.
また、上述の実施例では樹脂に対するアルカリ金属また
はアルカリ土類金属の添加は、焼却炉の樹脂ホッパで可
能であるため設備的な追設が比較的簡単であるという効
果がある。Furthermore, in the above-described embodiments, the alkali metal or alkaline earth metal can be added to the resin in the resin hopper of the incinerator, so additional equipment can be installed relatively easily.
本発明の別の実施例を第２図により説明する。Another embodiment of the present invention will be described with reference to FIG.
ｚ
あらかじめカチオン樹脂含有率の判明しているイオン交
換樹脂を樹脂ホッパー８に投入する。スクリュフィーダ
１５で、その前段に設置された水酸化ナトリウム添加タ
ンク６からカチオン樹脂の含有硫黄分に対し当量以上添
加しながら一定量の樹脂を、焼却炉９に供給し他の可燃
性雑固体と混合焼却する。その効果については、前述の
実施例と同様である。z An ion exchange resin whose cationic resin content is known in advance is charged into the resin hopper 8. At the screw feeder 15, a certain amount of resin is added from the sodium hydroxide addition tank 6 installed at the front stage to the incinerator 9 while adding more than an equivalent amount to the sulfur content of the cationic resin, and is mixed with other combustible miscellaneous solids. Mix and incinerate. The effect is similar to that of the previous embodiment.
以上の実施例では水酸化ナトリウムを使用済イオン交換
樹脂に添加する方法として、特別な混合装置を設けてい
るが、イオン交換樹脂の再生系を用いて水酸化ナトリウ
ムを添加する方法もある。In the above embodiments, a special mixing device is provided as a method for adding sodium hydroxide to a used ion exchange resin, but there is also a method of adding sodium hydroxide using an ion exchange resin regeneration system.
即ち、アニオン樹脂の再生塔では通常水酸化ナトリウム
を用いて再生しているので、復水脱塩塔等からの使用済
イオン交換樹脂をアニオン樹脂の再生塔に移送し、ここ
でカチオン樹脂のイオン交換基にナトリウムを吸着させ
るようにすれば特別な装置を新たに設けることなく前処
理をすることが出来る。That is, since sodium hydroxide is normally used for regeneration in the anion resin regeneration tower, the used ion exchange resin from the condensate demineralization tower is transferred to the anion resin regeneration tower, where the cation resin ions are removed. By allowing the exchange group to adsorb sodium, pretreatment can be carried out without the need for new special equipment.
また、以上の実施例では水酸化す１〜リウムを添加する
例を説明したが、添加する他のものの例としてはＢａ（
ＯＨ）ｚやＣａ（ＯＨ）２等の水酸化物や、ＭｇＣＱｘ
やＣａＣｎ２等のアルカリ金属化合物またはアルカリ土
類金属化合物でも同様にＳＯｘの発生を低減させること
が出来る。ただし、処理操作の容易性を考慮すると、ア
ルカリ金属の水酸化物またはアルカリ土類金属の水酸化
物が好ましく、なかでも水酸化ナトリウムがＳＯｘの発
生低減効果上好ましい。Furthermore, in the above embodiments, an example was explained in which mono-lithium hydroxide was added, but examples of other additives include Ba(
Hydroxides such as OH)z and Ca(OH)2, MgCQx
An alkali metal compound or an alkaline earth metal compound such as CaCn2 or CaCn2 can similarly reduce the generation of SOx. However, in consideration of ease of treatment operation, alkali metal hydroxides or alkaline earth metal hydroxides are preferable, and sodium hydroxide is particularly preferable in terms of SOx generation reduction effect.
以上の本発明の実施例によれば、原子力発電プラントで
発生する使用済イオン交樹欄脂のほとんどが焼却処理可
能となるため、樹脂廃棄物の発生量を従来の４０分の１
以下にできる。According to the embodiments of the present invention described above, most of the used ion exchange resin resin generated in nuclear power plants can be incinerated, so the amount of resin waste generated can be reduced to 1/40th of the conventional amount.
You can do the following.
また、イオン交換樹脂の形状（粒状、粉末、繊維）に選
択性がないため、樹脂の廃棄処理を実施する分野に広く
適用できる。Furthermore, since there is no selectivity in the shape of the ion exchange resin (granules, powder, fibers), it can be widely applied to fields where resin waste treatment is carried out.
本発明によれば、排ガス系への硫黄酸化物の発生を抑制
して焼却炉でイオン交換基に硫黄分を含有する使用済イ
オン交換樹脂を焼却することができる。According to the present invention, a used ion exchange resin containing sulfur in the ion exchange group can be incinerated in an incinerator while suppressing the generation of sulfur oxides into the exhaust gas system.
第１図は本発明の一実施例を示すフロー図、第２図は別
の実施例を示すフロー図、第３図は本発明の効果を示す
焼却炉温度とＳＯｘ発生割合の関係図、第４図はナトリ
ウム添加割合とＳＯｘ発生割合の関係を示す図面である
。
１・・使用済樹脂受タンク、２・・脱水器供給ポンプ、
３・・・遠心脱水器、４・・・水分計、５・混合機、６
・・アルカリ金属またはアルカリ土類金属添加タンク、
７・・・添加ポンプ、８・・・焼却炉樹脂ホッパー、９
・・焼却炉、↑０・・・可燃性雑固体ホッパー、１１・
・セラミックフィルタ、工２・・排ガスフィルタ、１３
・・排ガスブロア、工４・・・排気筒、１５・・・スク
リュフィーダ。Fig. 1 is a flow diagram showing one embodiment of the present invention, Fig. 2 is a flow chart showing another embodiment, Fig. 3 is a relation diagram between incinerator temperature and SOx generation rate showing the effects of the present invention, FIG. 4 is a diagram showing the relationship between the sodium addition rate and the SOx generation rate. 1. Used resin receiving tank, 2. Dehydrator supply pump,
3... Centrifugal dehydrator, 4... Moisture meter, 5. Mixer, 6
・・Alkali metal or alkaline earth metal addition tank,
7... Addition pump, 8... Incinerator resin hopper, 9
...Incinerator, ↑0...Flammable miscellaneous solids hopper, 11.
・Ceramic filter, work 2...Exhaust gas filter, 13
...Exhaust gas blower, work 4...exhaust stack, 15...screw feeder.
Claims (1)
ン交換樹脂を焼却する方法において、前記陽イオン交換
樹脂を焼却処理する際に前記イオン交換基が硫酸塩とな
るようにアルカリ金属化合物またはアルカリ土類金属化
合物を前記陽イオン交換樹脂に添加した後に該陽イオン
交換樹脂を焼却処理することを特徴とする使用済イオン
交換樹脂の焼却方法。 ２、スルホン酸基をイオン交換基とする陽イオン交換樹
脂を含む使用済イオン交換樹脂を焼却する方法において
、 アルカリ金属の水酸化物またはアルカリ土類金属の水酸
化物を前記使用済イオン交換樹脂に添加した後に該使用
済イオン交換樹脂を焼却処理することを特徴とする使用
済イオン交換樹脂の焼却方法。 ３、請求項２に記載の使用済イオン交換樹脂の焼却方法
において、 前記アルカリ金属の水酸化物またはアルカリ土類金属の
水酸化物は水溶液として前記使用済イオン交換樹脂に添
加されることを特徴とする使用済イオン交換樹脂の焼却
方法。 ４、請求項２に記載の使用済イオン交換樹脂の焼却方法
において、 前記アルカリ金属の水酸化物またはアルカリ土類金属の
水酸化物の添加量を前記スルホン酸基が硫酸塩を形成す
るに必要な当量以上とすることを特徴とする使用済イオ
ン交換樹脂の焼却方法。 ５、スルホン酸基をイオン交換基とする陽イオン交換樹
脂を含む使用済イオン交換樹脂を焼却する方法において
、 前記使用済イオン交換樹脂のスルホン酸基の水素イオン
のほとんどをアルカリ金属イオンまたはアルカリ土類金
属イオンと交換した後に前記使用済イオン交換樹脂を焼
却処理することを特徴とする使用済イオン交換樹脂の焼
却方法。 ６、請求項５に記載の使用済イオン交換樹脂の焼却方法
において、 前記スルホン酸基が硫酸塩を形成するに必要な当量以上
のアルカリ金属の水酸化物またはアルカリ土類金属の水
酸化物の添加することを特徴とする使用済イオン交換樹
脂の焼却方法。 ７、請求項１〜６のいずれかに記載の使用済イオン交換
樹脂の焼却方法において、 前記使用済イオン交換樹脂の焼却温度を ７５０℃以下とすることを特徴とする使用済イオン交換
樹脂の焼却方法。 ８、原子力発電プラントの復水脱塩塔からの使用済イオ
ン交換樹脂を焼却処理する方法において、前記復水脱塩
塔からの使用済イオン交換樹脂は陰イオン交換樹脂とス
ルホン酸基をイオン交換基とする陽イオン交換樹脂の混
合物であり、該復水脱塩塔からの使用済イオン交換樹脂
を陰イオン交換樹脂の再生塔に移送し、 該陰イオン交換樹脂の再生塔でアルカリ金属の水酸化物
またはアルカリ土類金属の水酸化物を該使用済イオン交
換樹脂に添加し、 該水酸化物が添加された使用済イオン交換樹脂を焼却処
理することを特徴とする使用済イオン交換樹脂の焼却方
法。 ９、陰イオン交換樹脂とスルホン酸基をイオン交換基と
する陽イオン交換樹脂を充填する復水脱塩塔からの使用
済イオン交換樹脂を焼却処理する方法において、 前記復水脱塩塔からの使用済イオン交換樹脂を分離塔で
陰イオン交換樹脂と陽イオン交換樹脂に分離し、 該分離塔で分離された前記陽イオン交換樹脂を陰イオン
交換樹脂の再生塔に移送し、 該陰イオン交換樹脂の再生塔でアルカリ金属の水酸化物
またはアルカリ土類金属の水酸化物を前記陽イオン交換
樹脂に添加し、 該水酸化物が添加された陽イオン交換樹脂を焼却処理す
ることを特徴とする使用済イオン交換樹脂の焼却方法。 １０、スルホン酸基をイオン交換基とする陽イオン交換
樹脂を含む使用済イオン交換樹脂を焼却処理する装置に
おいて、 前記使用済イオン交換樹脂にアルカリ金属の水酸化物ま
たはアルカリ土類金属の水酸化物を添加する手段を焼却
炉の前段に設けたことを特徴とする使用済イオン交換樹
脂の焼却装置。 １１、請求項１０に記載の使用済イオン交換樹脂の焼却
装置において、 前記添加する手段は、焼却炉に使用済イオン交換樹脂を
投入するフィーダーにアルカリ金属の水酸化物またはア
ルカリ土類金属の水酸化物を供給する手段を設けたもの
であることを特徴とする使用済イオン交換樹脂の焼却装
置。 １２、請求項１０に記載の使用済イオン交換樹脂の焼却
装置において、 前記添加する手段の前段において使用済イオン交換樹脂
の水分量を計測し、該計測値に基づいて添加する手段に
おけるアルカリ金属の水酸化物またはアルカリ土類金属
の水酸化物の添加量を調整することを特徴とする使用済
イオン交換樹脂の焼却装置。[Claims] 1. In a method of incinerating a used cation exchange resin containing sulfur in the ion exchange group, the ion exchange group becomes a sulfate when the cation exchange resin is incinerated. A method for incinerating a used ion exchange resin, which comprises adding an alkali metal compound or an alkaline earth metal compound to the cation exchange resin, and then incinerating the cation exchange resin. 2. In a method of incinerating a used ion exchange resin including a cation exchange resin having a sulfonic acid group as an ion exchange group, an alkali metal hydroxide or an alkaline earth metal hydroxide is added to the used ion exchange resin. 1. A method for incinerating a used ion exchange resin, which comprises adding the used ion exchange resin to a liquid and then incinerating the used ion exchange resin. 3. The method for incinerating a used ion exchange resin according to claim 2, wherein the alkali metal hydroxide or alkaline earth metal hydroxide is added to the used ion exchange resin as an aqueous solution. A method for incinerating used ion exchange resin. 4. The method for incinerating a used ion exchange resin according to claim 2, wherein the amount of the alkali metal hydroxide or alkaline earth metal hydroxide is set to the amount necessary for the sulfonic acid group to form a sulfate. 1. A method for incinerating a used ion exchange resin, characterized in that the amount of the used ion exchange resin is equal to or more than the equivalent amount. 5. In a method of incinerating a used ion exchange resin including a cation exchange resin having a sulfonic acid group as an ion exchange group, most of the hydrogen ions of the sulfonic acid group of the used ion exchange resin are converted into alkali metal ions or alkaline earth. A method for incinerating a used ion exchange resin, which comprises incinerating the used ion exchange resin after exchanging it with similar metal ions. 6. The method for incinerating a used ion exchange resin according to claim 5, wherein the sulfonic acid group contains an alkali metal hydroxide or an alkaline earth metal hydroxide in an amount equivalent to or more than that necessary to form a sulfate. A method for incinerating used ion exchange resin, characterized by adding the following: 7. The method of incinerating a used ion exchange resin according to any one of claims 1 to 6, characterized in that the incineration temperature of the used ion exchange resin is 750°C or less. Method. 8. In a method for incinerating spent ion exchange resin from a condensate demineralization tower of a nuclear power plant, the spent ion exchange resin from the condensate demineralization tower undergoes ion exchange of sulfonic acid groups with an anion exchange resin. The used ion exchange resin from the condensate demineralization tower is transferred to the anion exchange resin regeneration tower, and the alkali metal water is transferred to the anion exchange resin regeneration tower. A method of producing a used ion exchange resin, which comprises adding an oxide or an alkaline earth metal hydroxide to the used ion exchange resin, and incinerating the used ion exchange resin to which the hydroxide has been added. Incineration method. 9. A method for incinerating spent ion exchange resin from a condensate demineralization tower filled with an anion exchange resin and a cation exchange resin whose ion exchange group is a sulfonic acid group, comprising: Separating the used ion exchange resin into an anion exchange resin and a cation exchange resin in a separation tower, transporting the cation exchange resin separated in the separation tower to an anion exchange resin regeneration tower, and regenerating the anion exchange resin. Adding an alkali metal hydroxide or an alkaline earth metal hydroxide to the cation exchange resin in a resin regeneration tower, and incinerating the cation exchange resin to which the hydroxide has been added. A method for incinerating used ion exchange resin. 10. In an apparatus for incinerating a used ion exchange resin containing a cation exchange resin having a sulfonic acid group as an ion exchange group, the spent ion exchange resin is treated with an alkali metal hydroxide or an alkaline earth metal hydroxide. 1. An incineration device for used ion exchange resin, characterized in that a means for adding a substance is provided at a front stage of an incinerator. 11. The used ion exchange resin incineration apparatus according to claim 10, wherein the adding means adds an alkali metal hydroxide or alkaline earth metal water to a feeder for feeding the used ion exchange resin into the incinerator. An incineration device for used ion exchange resin, characterized in that it is equipped with a means for supplying an oxide. 12. The used ion exchange resin incineration apparatus according to claim 10, wherein the water content of the used ion exchange resin is measured before the adding means, and the amount of alkali metal in the adding means is determined based on the measured value. A used ion exchange resin incineration device characterized by adjusting the amount of hydroxide or alkaline earth metal hydroxide added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21746689A JP2901654B2 (en) | 1989-08-25 | 1989-08-25 | Incineration method of used ion exchange resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21746689A JP2901654B2 (en) | 1989-08-25 | 1989-08-25 | Incineration method of used ion exchange resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0382999A true JPH0382999A (en) | 1991-04-08 |
| JP2901654B2 JP2901654B2 (en) | 1999-06-07 |
Family
ID=16704674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21746689A Expired - Lifetime JP2901654B2 (en) | 1989-08-25 | 1989-08-25 | Incineration method of used ion exchange resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2901654B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012207134A (en) * | 2011-03-30 | 2012-10-25 | Ngk Insulators Ltd | Volume reduction treatment system for ion exchange resin and volume reduction treatment method for ion exchange resin |
| US20190070599A1 (en) * | 2016-03-04 | 2019-03-07 | 3M Innovative Properties Company | Method for removing perfluorinated alkanoic acids |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106910546A (en) * | 2017-03-20 | 2017-06-30 | 四川行之智汇知识产权运营有限公司 | For the storage organization of nuclear power station ion exchange resin after dehydration |
-
1989
- 1989-08-25 JP JP21746689A patent/JP2901654B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012207134A (en) * | 2011-03-30 | 2012-10-25 | Ngk Insulators Ltd | Volume reduction treatment system for ion exchange resin and volume reduction treatment method for ion exchange resin |
| US20190070599A1 (en) * | 2016-03-04 | 2019-03-07 | 3M Innovative Properties Company | Method for removing perfluorinated alkanoic acids |
| US10744497B2 (en) * | 2016-03-04 | 2020-08-18 | 3M Innovative Properties Company | Method for removing perfluorinated alkanoic acids |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2901654B2 (en) | 1999-06-07 |
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