JPS62171704A - System for treating waste solvent - Google Patents
System for treating waste solventInfo
- Publication number
- JPS62171704A JPS62171704A JP1188286A JP1188286A JPS62171704A JP S62171704 A JPS62171704 A JP S62171704A JP 1188286 A JP1188286 A JP 1188286A JP 1188286 A JP1188286 A JP 1188286A JP S62171704 A JPS62171704 A JP S62171704A
- Authority
- JP
- Japan
- Prior art keywords
- waste
- waste solvent
- solvent
- hydrazine
- cleaning
- 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.)
- Pending
Links
- 239000010887 waste solvent Substances 0.000 title claims abstract description 57
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000011084 recovery Methods 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims description 23
- 239000012459 cleaning agent Substances 0.000 claims description 19
- LOEUCBBZEHMJQN-UHFFFAOYSA-N hydrazine;oxalic acid Chemical compound NN.OC(=O)C(O)=O LOEUCBBZEHMJQN-UHFFFAOYSA-N 0.000 claims description 10
- 238000000354 decomposition reaction Methods 0.000 claims description 9
- -1 hydrazine compound Chemical class 0.000 claims description 8
- 239000004480 active ingredient Substances 0.000 claims description 6
- PTYMQUSHTAONGW-UHFFFAOYSA-N carbonic acid;hydrazine Chemical compound NN.OC(O)=O PTYMQUSHTAONGW-UHFFFAOYSA-N 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 20
- 238000005406 washing Methods 0.000 abstract description 12
- 238000004821 distillation Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 abstract description 2
- 239000002901 radioactive waste Substances 0.000 abstract description 2
- 239000003599 detergent Substances 0.000 abstract 3
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 29
- 229940094933 n-dodecane Drugs 0.000 description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000000605 extraction Methods 0.000 description 6
- 239000003205 fragrance Substances 0.000 description 5
- 239000012046 mixed solvent Substances 0.000 description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 description 5
- 235000017550 sodium carbonate Nutrition 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 3
- 238000012958 reprocessing Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- JYFHYPJRHGVZDY-UHFFFAOYSA-N Dibutyl phosphate Chemical compound CCCCOP(O)(=O)OCCCC JYFHYPJRHGVZDY-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000004992 fission Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910052778 Plutonium Inorganic materials 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- OYEHPCDNVJXUIW-UHFFFAOYSA-N plutonium atom Chemical compound [Pu] OYEHPCDNVJXUIW-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002915 spent fuel radioactive waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- DNYWZCXLKNTFFI-UHFFFAOYSA-N uranium Chemical compound [U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U] DNYWZCXLKNTFFI-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Extraction Or Liquid Replacement (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は使用済混合有機溶媒から不純物を分離する装置
と、混合有機溶媒をマイクロ波で加熱して蒸留分離する
菰買を組合せた廃溶媒処理システムに関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a waste solvent treatment system that combines an apparatus for separating impurities from a used mixed organic solvent and a purchasing system that heats the mixed organic solvent with microwaves and separates it by distillation. Regarding the system.
原子力発電所で使用された使用済核燃料シよ、再処理プ
ラントで核分裂生成物と分離するために、ウランとプル
トニウムを有機溶媒相に抽出して回収している。この抽
出溶媒には、リン酸１〜リブプル（以下、ＴＢＰと記す
）とｎ〜ドデカンとの混合溶媒が使用されている。この
混合溶媒は、８放０４ ｆ’ｌの核分裂生成物（以下、
Ｆ Ｐと記り）と接触７るため、放ＯＡ線分解等により
劣化し抽出性能が徐々に低下する。このため、抽出性能
が低下した溶媒は、使用済廃溶媒として、廃溶媒処理二
［程で再生されて、Ｔ １３ Ｐとｎ−ドデカンは、抽
出溶媒として１１利用される。Spent nuclear fuel used in nuclear power plants is recovered by extracting uranium and plutonium into an organic solvent phase in order to separate it from the fission products in a reprocessing plant. As this extraction solvent, a mixed solvent of phosphoric acid 1~libpur (hereinafter referred to as TBP) and n~dodecane is used. This mixed solvent contains 8004 f'l of fission products (hereinafter referred to as
FP (denoted as P), it deteriorates due to decomposition of OA radiation and the extraction performance gradually decreases. Therefore, the solvent whose extraction performance has decreased is regenerated as a used waste solvent in the second process of waste solvent treatment, and T 13 P and n-dodecane are used as extraction solvents.
この廃溶媒処理工程は洗浄工程と蒸留分離ＬＩＩ Ｒ’
！とを有し、前者は最初に廃溶媒中に含有するＦＰ等の
放射能を分離するため、炭酸ナリトウム（Ｎａ２ＣＯ３
）及び水酸化ナトリウム（Ｎ ａ Ｏｌ−１）水溶液等
の洗浄剤を混合溶媒中に混入させて、洗浄剤中にｔｌｌ
躬能を抽出して分離する。また、後者の蒸留分離工程は
洗浄■稈にて放射能を分離した廃溶媒を減圧蒸留してＴ
ＢＰどｎ−ドデカンを分離回収し、抽出溶媒として再利
用覆る工程である。This waste solvent treatment process includes a washing process and distillation separation LII R'
! The former first uses sodium carbonate (Na2CO3) to separate radioactivity such as FP contained in the waste solvent.
) and a cleaning agent such as an aqueous solution of sodium hydroxide (NaOl-1) are mixed into the mixed solvent to add tll to the cleaning agent.
Extract and separate the mano. In addition, in the latter distillation separation process, the waste solvent from which radioactivity has been separated in the washing culm is distilled under reduced pressure.
This is a process in which BP n-dodecane is separated and recovered and reused as an extraction solvent.
洗浄工程で洗浄剤として使用される炭酸ナトリ１クム（
Ｎａ２ＣＯ３）及び水酸化ナトリウム（Ｎａ ０１１
’）は溶媒の洗浄という面では、非常に１゛ぐれた実績
を持っている。1 cum of sodium carbonate (used as a cleaning agent in the cleaning process)
Na2CO3) and sodium hydroxide (Na011
') has an extremely superior track record in terms of cleaning solvents.
しかしながら、洗浄によって発生する放射性廃液にプト
リウム塩が多聞に混入するため、二次廃ｑ物の品が増大
する欠点があった。また、蒸留分離工程で用いられる加
熱手段としては従来、熱風、蒸気、投げ込みヒータを含
む伝熱などであったが、これらの加熱手段で溶液を加熱
した場合、熱電導によって溶液の４度は上昇する。その
加熱時には廃溶媒にすｂ熱源の温度を高くする必要があ
る。However, because puttrium salts are often mixed into the radioactive waste liquid generated by cleaning, there is a drawback that the amount of secondary waste increases. In addition, the heating means used in the distillation separation process have conventionally been hot air, steam, and heat transfer including immersion heaters, but when the solution is heated by these heating means, the temperature of the solution increases by 4 degrees due to thermal conduction. do. When heating the waste solvent, it is necessary to raise the temperature of the heat source.
ところが、Ｔ ［３１）とドデカンは熱的に不安定であ
り、１５０℃以上で熱分解し、Ｔｌ３Ｐはリン酸ジブチ
ル（ＤＢＰ）やリン酸モツプデル（ＭＢＩ）＞に、ドデ
カンはさらに多くの炭化水素に分解される。However, T[31] and dodecane are thermally unstable and decompose at temperatures above 150°C, and Tl3P is converted to dibutyl phosphate (DBP) and mozupdel phosphate (MBI), and dodecane is converted to even more hydrocarbons. It is decomposed into
そこで、これらＴＢＰとドデカンの廃溶媒を熱分解させ
ないで有効に回収することが要望されている。Therefore, it is desired to effectively recover these TBP and dodecane waste solvents without thermally decomposing them.
本発明は、上述した従来の廃溶媒処理■稈の欠点を除去
するためになされたもので、廃溶媒の洗浄に用いる洗浄
剤をヒドラジン化合物とし、放割性廃液として発生する
ヒドラジン化合物を分解して二次廃棄物の発生量を減少
させ、さらに、廃溶媒をマイクロ波によって直接加熱す
ることによって、従来の加熱ヒータ等の熱源を不要とし
、蒸留生成物の回収率を向上させた、廃溶媒処理システ
ムを提供することを目的とする。The present invention was made in order to eliminate the drawbacks of the conventional waste solvent treatment method described above.The present invention uses a hydrazine compound as the cleaning agent used for cleaning the waste solvent, and decomposes the hydrazine compound generated as a splitting waste liquid. A waste solvent that reduces the amount of secondary waste generated, and also eliminates the need for conventional heat sources such as heaters by directly heating the waste solvent with microwaves, improving the recovery rate of distilled products. The purpose is to provide a processing system.
本発明は廃溶媒に含有する不純物をヒドラジン化合物か
らなる洗浄剤で除去する洗浄装置と、この洗浄装置から
流出する使用済洗浄剤を分解する分解装置と、前記洗浄
＠置で洗浄した廃溶媒をマイクロ波で加熱蒸発させて有
効成分を精密する精留装置と、この精留装置で精留され
た有効成分を回収する回収装置と、前記精留装置内に残
る残香を処理する残香処理装置とから構成し、前記ヒド
ラジン化合物はシュウ酸ヒドラジン（（Ｎ２）１５＞２
Ｇ ２Ｏ４ ＞または、炭酸ヒドラジン（（Ｎ２（−
１５）２ＣＯ３）からなることを特徴とりる廃溶媒処１
１Ｊ！システムである。The present invention provides a cleaning device that removes impurities contained in waste solvent with a cleaning agent made of a hydrazine compound, a decomposition device that decomposes the used cleaning agent flowing out from the cleaning device, and a decomposition device that decomposes the used cleaning agent that flows out from the cleaning device. A rectification device that refines the active ingredient by heating and evaporating it with microwaves, a recovery device that recovers the active ingredient rectified by the rectification device, and a residual fragrance processing device that processes the residual aroma remaining in the rectification device. The hydrazine compound is composed of hydrazine oxalate ((N2)15>2
G 2O4 > or hydrazine carbonate ((N2(-
15) Waste solvent treatment 1 characterized by consisting of 2CO3)
1J! It is a system.
以下、図面を参照して本発明の一実施例を説明りる。 An embodiment of the present invention will be described below with reference to the drawings.
第１図において、符号１は廃溶媒の洗浄装置であり、こ
の洗浄装置１には、廃溶媒供給系２、洗浄剤供給系３、
廃溶媒流出管４および洗浄廃液流出管５が接続されてい
る。また、洗浄廃液流出管５には洗浄廃液分解装置６が
接続されている。この分解装置６には発生するガスを放
出する放出管７が接続されている。In FIG. 1, reference numeral 1 indicates a waste solvent cleaning device, and this cleaning device 1 includes a waste solvent supply system 2, a cleaning agent supply system 3,
A waste solvent outflow pipe 4 and a washing waste liquid outflow pipe 5 are connected. Furthermore, a cleaning waste liquid decomposition device 6 is connected to the cleaning waste liquid outflow pipe 5 . A discharge pipe 7 for discharging the generated gas is connected to the decomposition device 6.
一方、洗浄装置１で洗浄された廃溶媒は洗浄装置１に接
続された廃溶媒流出管４を通して、精留装置８に供給さ
れる。精留装置８には、マイクロ波発振器９が導波管１
０を介して接続され、マイクロ波発振器９が出力された
マイクロ波が導波管１０を通って精留装置８に供給され
た廃溶媒２に照射されるにうになっている。On the other hand, the waste solvent washed by the washing device 1 is supplied to the rectification device 8 through the waste solvent outflow pipe 4 connected to the washing device 1. In the rectifier 8, a microwave oscillator 9 is connected to a waveguide 1.
The waste solvent 2 supplied to the rectifier 8 is irradiated with microwaves output from the microwave oscillator 9 through the waveguide 10.
マイクロ波加熱ににって蒸発し、精留された廃溶媒中の
有効成分は精留装置８の上部及び下部に接続された排出
管１１及び１３を介して第１および第２の回収装置１２
及び１４にで′回収される。The active ingredients in the waste solvent evaporated and rectified by microwave heating are transferred to the first and second recovery devices 12 via discharge pipes 11 and 13 connected to the upper and lower portions of the rectification device 8.
and recovered at 14.
なお、廃溶媒から有効成分を回収した後に精留装置ｆｆ
ｉ ８内に残る残香は残香枡出管１５を介して残香処理
装置１６で処理される。In addition, after recovering the active ingredient from the waste solvent, the rectifier ff
The residual fragrance remaining in the i8 is processed by a residual fragrance processing device 16 via a residual fragrance discharge pipe 15.
次に上述のごとく構成された本発明の廃溶媒処理システ
ムにより再処理プラントから発生Ｊ゛るＴＢＰとｎ−ド
デカンが混合された廃石様溶媒を洗浄してｎ−ドデカン
を蒸留分離する方法について説明する。Next, we will discuss a method for washing waste rock-like solvent mixed with TBP and n-dodecane generated from a reprocessing plant using the waste solvent treatment system of the present invention configured as described above, and distilling and separating n-dodecane. explain.
廃溶媒供給系２からはＴＢＰ３０％およびｎ−ドデカン
７０％の廃溶媒を、洗浄剤供給系３からは洗浄剤として
ヒドラジン化合物、ここではシュウ酸ヒドラジン（（Ｎ
２１−１５ ） ２ Ｇ ２Ｏ 、ｓ ）を洗浄装置
１にそれぞれ供給する。洗浄装置１内ではこれら廃溶媒
とシュウ酸ヒドラジン（（Ｎ２Ｈ５）２Ｃ２Ｏ４）が混
合され、廃溶媒中に含有する塩類及び放射能はシュウ酸
ヒドラジン（（Ｎ２Ｈ５）２Ｃ２Ｏ４）に抽出されて廃
溶媒は洗浄される。The waste solvent supply system 2 supplies a waste solvent of 30% TBP and 70% n-dodecane, and the cleaning agent supply system 3 supplies a hydrazine compound as a cleaning agent, here hydrazine oxalate ((N
21-15) 2G2O, s) are respectively supplied to the cleaning device 1. In the cleaning device 1, these waste solvents and hydrazine oxalate ((N2H5)2C2O4) are mixed, salts and radioactivity contained in the waste solvent are extracted into hydrazine oxalate ((N2H5)2C2O4), and the waste solvent is washed. be done.
シュウ酸ヒドラジン（（Ｎ２＋−１５） ２Ｇ、２Ｏ４
）は、不安定な物質であり、２〜３週間故買しておくと
、二酸化炭素ＣＯ２とアンモニア水に分解する。、廃溶
媒を洗浄した後に発生覆る使用流廃液＜ （Ｎ２１−１
５）、２Ｇ、２Ｏ４）は、分解装置Ｉ￥６に供給され、
上記分解反応で発生する二酸化炭素（ＣＯ２）は、その
まま人気中に放出され、アンモニア水には、過酸化水素
を入れて窒素酸化物（Ｎ。Hydrazine oxalate ((N2+-15) 2G, 2O4
) is an unstable substance, and if left unused for 2 to 3 weeks, it will decompose into carbon dioxide CO2 and aqueous ammonia. , used waste liquid generated after washing the waste solvent < (N21-1
5), 2G, 2O4) are supplied to the decomposer I￥6,
Carbon dioxide (CO2) generated in the above decomposition reaction is released as is, and hydrogen peroxide is added to the ammonia water to produce nitrogen oxides (N).
Ｘ）と水とに分解させる。窒素酸化物（ＮｏＸ）は水に
吸着させて、硝酸（ＮＨＯ３）として再使用し、水は加
熱蒸発ざぜるため、シュウ酸ヒドラジン（（Ｎ ２ ＋
’＋ ５） ２ Ｃ２Ｏ４）自体が廃棄物となることは
なく、洗浄廃液中に含有づる塩類及びｔＪＲｉ銅能のみ
が廃棄物となる。X) and water. Nitrogen oxides (NoX) are adsorbed on water and reused as nitric acid (NHO3), and water is heated and evaporated, so hydrazine oxalate ((N 2 +
'+ 5) 2C2O4) itself does not become a waste, but only the salts and tJRi copper capacity contained in the washing waste liquid become a waste.
洗浄処理された廃溶媒は廃溶媒流出管４を通って精留装
置８に供給され、マイクロ波発娠器９から出力されたマ
イクロ波により加熱される。大気圧下では、Ｔ Ｂ ｌ
）は約２８０℃で沸騰し、ｎ−ドデカンは約２Ｏ０℃で
沸騰する。またＴＢＰは約２８０℃で熱分解゛するが、
ＴＢＰの熱的安定性は１５０℃以下では極めて良好であ
るため、’ｒ １３ Ｐの情意が１５０℃以下となるよ
うに精留装置８内を減圧し、廃溶媒を加熱する。The washed waste solvent is supplied to the rectifier 8 through the waste solvent outflow pipe 4 and heated by microwaves output from the microwave generator 9. At atmospheric pressure, T B l
) boils at about 280°C, and n-dodecane boils at about 200°C. Also, TBP thermally decomposes at about 280℃,
Since the thermal stability of TBP is extremely good at temperatures below 150°C, the inside of the rectifier 8 is depressurized and the waste solvent is heated so that the temperature of 'r 13 P is below 150°C.
一方、ｎ−ドデカンは約８０℃で沸騰は、ＴＢＰとｎ−
ドデカンの共沸はほとんど起こらないため、廃溶媒から
は先にｎ−ドデカンが蒸発し、精留装置８内で精留され
て第１の回収装置１２に回収される。ｎ−ドデカンが廃
溶媒から分ｇｉｌｌされると、次にＴＢＰが蒸発し、精
留装置８内で精留されて第２の回収装置ｆＴ１４に回収
される。On the other hand, n-dodecane boils at about 80℃, and TBP and n-
Since azeotropy of dodecane hardly occurs, n-dodecane evaporates from the waste solvent first, is rectified in the rectifier 8, and is recovered in the first recovery device 12. When n-dodecane is separated from the waste solvent, TBP is then evaporated, rectified in the rectifier 8, and recovered in the second recovery device fT14.
なお、廃溶媒からｎ−ドデカンとＴ Ｂ Ｐとを分離回
収した後に、精留装置８内に残る残香は、残香処理ｖ装
置１６で処ｐ１１される。Incidentally, after the n-dodecane and TBP are separated and recovered from the waste solvent, the residual aroma remaining in the rectification device 8 is treated in the residual aroma processing device 16.
次に上述の廃溶媒処理システムの効果を確認するために
、本発明と従来例とを比較する。ｍｌに廃溶媒を洗浄し
た後に二次廃棄物として発生する使用湾洗浄剤の吊を求
める。Next, in order to confirm the effects of the above-mentioned waste solvent treatment system, the present invention will be compared with a conventional example. ml of used bay cleaning agent generated as secondary waste after washing the waste solvent.
従来例どして、５ｗｔ％のＮａ２ＣＯ３溶液１００ Ｋ
ｇを洗浄剤として用いた場合、蒸発乾燥した後のＮａ２
ＣＯ３粉末が廃棄物どなる。As a conventional example, 5 wt% Na2CO3 solution 100 K
When using g as a cleaning agent, Na2 after evaporation drying
CO3 powder roars into waste.
廃棄物量−０，０５Ｘ １００に’Ｊ ＝５に！Ｊ本発
明にお（）る洗浄装置１と分１砦ゴ４とからなる無ｊｎ
化洗浄シスデムの洗浄剤としてシュウ酸ヒドラジン（（
Ｎ２）１５）２Ｃ２Ｏ４）１００Ｋｇを用いた場合は第
２図に示したＪ：うになる。Amount of waste - 0.05X 100 'J = 5! A non-containing device consisting of a cleaning device 1 and a cleaning device 4 according to the present invention
Hydrazine oxalate ((
When 100 kg of N2)15)2C2O4) is used, the result is J shown in FIG.
第２図から明らかなにうに洗浄剤としてシュウ酸ヒドラ
ジン（（Ｎ ２１−１５＞ ２Ｃ２Ｏ４）を用いた場合
、シュウ酸ヒドラジン（（Ｎ ２ Ｈ５） ２ Ｃ２Ｏ
４）自体は二次廃棄物となることはない。As is clear from Figure 2, when hydrazine oxalate ((N 21-15> 2C2O4) is used as a cleaning agent, hydrazine oxalate ((N 2 H5) 2 C2O
4) The product itself does not become secondary waste.
なＪ３、炭酸ヒドラジン（（Ｎ２１−１５）２ＯＯ３）
を洗浄剤として用いても上記分解反応により炭酸ヒドラ
ジン（（Ｎ２１−１５）２Ｃ○３）自体は、二次廃棄物
となることはない。J3, hydrazine carbonate ((N21-15)2OO3)
Even when used as a cleaning agent, hydrazine carbonate ((N21-15)2C○3) itself does not become secondary waste due to the above decomposition reaction.
また、廃溶媒を蒸留分子１ｌｆｆする際の本発明と従来
例を比較した気液平衡を第３図に示す。同図中、曲Ｉ！
ｉ！ａは本発明のマイクロ波加熱を、また曲線すは従来
例の外部加熱ヒーターをそれぞれ用いてＴＢＰとｎ−ド
デカンの混合溶媒を蒸留分離する際に、混合溶媒中のｎ
−ドデカンの含有率を変化させたしのである。Further, FIG. 3 shows the gas-liquid equilibrium comparing the present invention and the conventional example when waste solvent is distilled to 1lff. In the same figure, song I!
i! When a mixed solvent of TBP and n-dodecane is distilled and separated using the microwave heating of the present invention and the conventional external heating heater, a is the n in the mixed solvent.
-The content of dodecane was changed.
この図から明らかなようにマイクロ波で廃溶媒を加熱し
た場合、外部ヒーターに比べで、蒸気中のｎ−ドデカン
の含有率は大きくなる。１５に、使用湾核燃料を再処理
りる際の抽出処理■稈から発生１°る溶媒のｎ−ドデカ
ンの含有率が７０％程度の場合、蒸気中にほとんどＴ
Ｉ３ ＋）が含まれず、ｎ−ドデカンのみを効率よく分
離することができる。As is clear from this figure, when the waste solvent is heated with microwaves, the content of n-dodecane in the steam becomes higher than when using an external heater. 15. Extraction process during reprocessing of used bay nuclear fuel ■If the content of n-dodecane in the solvent generated from the culm is about 70%, almost no T is present in the steam.
I3+), and only n-dodecane can be efficiently separated.
上述のごとく本発明の廃溶媒処理システムは廃溶媒に含
有する不純物をヒドラジン化合物からなる洗浄剤で除去
し、洗浄処理後に発生する使用流況浄剤を分解させ、二
次廃棄物の発生量を減少させたしのである。ざらに、洗
浄処理した後の廃溶媒をマイクロ波によって加熱するた
め、廃溶媒から発蒸分離される右動成分の回収効率の向
上を図ることができる。すなわノう、マイクロ波加熱で
は、加熱される被処理物自身が発熱体となるので不必要
に温度を高めることができる。また被処理物をマイクロ
波で加熱する場合には内部加熱であるため、加熱タンク
外壁の伝熱面積を考慮する必要がなく、装量全体の形状
の合理化、簡素化が可能とシにす、保守点検が容易とな
る。As mentioned above, the waste solvent treatment system of the present invention removes impurities contained in the waste solvent with a cleaning agent made of a hydrazine compound, decomposes the used flow cleaning agent generated after cleaning treatment, and reduces the amount of secondary waste generated. It has been reduced. In general, since the waste solvent after the cleaning treatment is heated by microwaves, it is possible to improve the recovery efficiency of the right-handed component separated by evaporation from the waste solvent. In other words, in microwave heating, the heated object itself becomes a heating element, so the temperature can be increased unnecessarily. In addition, when heating the workpiece with microwaves, the heating is done internally, so there is no need to consider the heat transfer area of the outer wall of the heating tank, which allows for rationalization and simplification of the overall shape of the loaded material. Maintenance and inspection become easier.
第１図は本発明に係る廃溶媒処理システムの一実施例を
示づブロック図、第２図は第１図にお【プる無ｊｎ化洗
浄システムの流れを示す系統図、第３図は溶媒中のｎ−
ドデカンの含有率と蒸気中のｎ−ドデカンの含有率を示
ず特性図である。
１・・・洗浄装置、２・・・廃溶媒供給系、３・・・洗
浄剤供給系、６・・・分解装置、８・・・精留装置、９
・・・マイクロ波発振番、１０・・・残香処１ｊｌｌ装
首。
代理人弁理士 則 近 憲 佑
同 三 俣 弘 文箱１図。Fig. 1 is a block diagram showing an embodiment of the waste solvent treatment system according to the present invention, Fig. 2 is a system diagram showing the flow of the JN-free cleaning system based on Fig. 1, and Fig. 3 is a block diagram showing an embodiment of the waste solvent treatment system according to the present invention. n- in solvent
It is a characteristic diagram which does not show the content rate of dodecane and the content rate of n-dodecane in steam. DESCRIPTION OF SYMBOLS 1... Cleaning device, 2... Waste solvent supply system, 3... Cleaning agent supply system, 6... Decomposition device, 8... Rectification device, 9
...Microwave oscillation number, 10...Remaining fragrance place 1jll neck. Representative Patent Attorney Noriyuki Chika Yudo Hiroshi Mitsumata Figure 1 of the text box.
Claims (1)
る洗浄剤で除去する洗浄装置と、この洗浄装置から流出
する使用済洗浄剤を分解する分解装置と、前記洗浄装置
で洗浄した廃溶媒をマイクロ波で加熱蒸発させて有効成
分を精留する精留装置と、この精留装置で精留された有
効成分を回収する回収装置と、前記精留装置内に残る残
査を処理する残査処理装置とから構成されることを特徴
とする廃溶媒処理システム。 ２、前記ヒドラジン化合物はシュウ酸ヒドラジン（（Ｎ
＿２Ｈ＿５）＿２Ｃ＿２Ｏ＿４）または、炭酸ヒドラジ
ン（（Ｎ＿２Ｈ＿５）＿２ＣＯ＿３）からなることを特
徴とする特許請求の範囲第１項記載の廃溶媒処理システ
ム。[Scope of Claims] 1. A cleaning device that removes impurities contained in waste solvent with a cleaning agent made of a hydrazine compound, a decomposition device that decomposes the used cleaning agent flowing out from this cleaning device, and cleaning with the cleaning device. A rectification device that rectifies the active ingredients by heating and evaporating the waste solvent with microwaves, a recovery device that recovers the active ingredients rectified by this rectification device, and a recovery device that collects the residue remaining in the rectification device. A waste solvent treatment system comprising a residue treatment device. 2. The hydrazine compound is hydrazine oxalate ((N
_2H_5)_2C_2O_4) or hydrazine carbonate ((N_2H_5)_2CO_3). The waste solvent treatment system according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1188286A JPS62171704A (en) | 1986-01-24 | 1986-01-24 | System for treating waste solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1188286A JPS62171704A (en) | 1986-01-24 | 1986-01-24 | System for treating waste solvent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62171704A true JPS62171704A (en) | 1987-07-28 |
Family
ID=11790097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1188286A Pending JPS62171704A (en) | 1986-01-24 | 1986-01-24 | System for treating waste solvent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62171704A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7422010B2 (en) | 2004-03-31 | 2008-09-09 | Rinnai Corporation | Cooking stove |
-
1986
- 1986-01-24 JP JP1188286A patent/JPS62171704A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7422010B2 (en) | 2004-03-31 | 2008-09-09 | Rinnai Corporation | Cooking stove |
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