JPS63100400A - Hydrothermal processing method of waste solvent - Google Patents
Hydrothermal processing method of waste solventInfo
- Publication number
- JPS63100400A JPS63100400A JP24594786A JP24594786A JPS63100400A JP S63100400 A JPS63100400 A JP S63100400A JP 24594786 A JP24594786 A JP 24594786A JP 24594786 A JP24594786 A JP 24594786A JP S63100400 A JPS63100400 A JP S63100400A
- Authority
- JP
- Japan
- Prior art keywords
- reactor
- liquid
- waste
- waste solvent
- processing method
- 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 description 9
- 238000003672 processing method Methods 0.000 title 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 13
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 238000010335 hydrothermal treatment Methods 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 7
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 5
- 239000011575 calcium Substances 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000006864 oxidative decomposition reaction Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- XTTGYFREQJCEML-UHFFFAOYSA-N tributyl phosphite Chemical compound CCCCOP(OCCCC)OCCCC XTTGYFREQJCEML-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
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) [Abstract] 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、原子力施設主に核燃料再処理工場で排出され
る廃溶媒であるドデカン（Ｃ，、Ｈ，）トリブチルホス
ファイト（以下ＴＢＰと記す）の処理処分に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is directed to dodecane (C, H,) tributyl phosphite (hereinafter referred to as TBP), which is a waste solvent discharged from nuclear facilities, mainly nuclear fuel reprocessing plants. ) related to the processing and disposal of
従来、原子力施設からの廃溶媒は、焼却炉等において熱
分解・焼却法により高温で処理された後、セメント同化
またはアスファルト固化される。Conventionally, waste solvents from nuclear power facilities are treated at high temperatures by pyrolysis and incineration in an incinerator or the like, and then assimilated into cement or solidified into asphalt.
かかる従来の方法には２次のような問題点があった。 This conventional method has the following problems.
（１）処理が高温で行なわれること。(1) Processing is performed at high temperatures.
（２）開放系であるため、排ガス等の２次廃棄物が多い
こと。(2) Because it is an open system, there is a lot of secondary waste such as exhaust gas.
（３） Ｔ Ｂ Ｐの成孔分解反応にょシ、生成するリ
ン酸が２反応器材質を腐食すること。(3) During the pore-forming decomposition reaction of TBP, the generated phosphoric acid corrodes the material of the two reactors.
かかる問題点を解決するために２本発明は。 In order to solve these problems, the present invention has two features.
ドデカン、トリブチルホスフェイトを含む廃溶媒の処理
方法において、同溶媒と水酸化カルシウム、水酸化ナト
リウム、酸素等の添加剤とを水を主成分とするリサイク
ル液に加える第１工程、同第１工程の後同液をチューブ
リアクタ等の反応器を用いて連続的に水熱条件下で酸化
分解処理する第２工程、同第２工程後の後同液から余剰
酸素と生成固形物と適宜余剰水を分離する第３工程、同
第３工程の後残留液をりサイクル液として第１工程へ送
る。In a method for treating waste solvents containing dodecane and tributyl phosphate, the first step is to add the same solvent and additives such as calcium hydroxide, sodium hydroxide, oxygen, etc. to a recycled liquid mainly composed of water; After that, the second step is to continuously oxidize and decompose the same liquid under hydrothermal conditions using a reactor such as a tube reactor. The remaining liquid after the third step is sent to the first step as a recycling liquid.
上記本発明方法においては、水熱条件下では、水の溶解
力、イオン化力が増加してイオンを仲介とする諸反応が
極めて活発となり。In the method of the present invention, under hydrothermal conditions, the dissolving power and ionizing power of water increase, and various reactions mediated by ions become extremely active.
反応速度を著しく増すことができ、この性質を利用して
、ドデカンとＴＢＰの酸化分解反応を行ない、生成した
Ｐα−２Ｃ蓼−はＣａ（ＯＨ）＝と反応させ沈澱させる
ことができる。The reaction rate can be significantly increased, and by utilizing this property, the oxidative decomposition reaction of dodecane and TBP can be carried out, and the generated Pα-2C can be reacted with Ca(OH)= to be precipitated.
また、ＰＩ−Ｉ調整及び反応速度を増すためにＮａｏＨ
等が添加される。さらに反応器としてチューブリアクタ
を用いることにより、耐久度が向上し、連続的な使用も
可能となる。Additionally, NaoH was added to increase the PI-I adjustment and reaction rate.
etc. are added. Furthermore, by using a tube reactor as the reactor, durability is improved and continuous use becomes possible.
廃溶媒の本発明処理方法の実施例を第１図を用いて述べ
る。An example of the waste solvent treatment method of the present invention will be described with reference to FIG.
ａ点の流れは、常温常圧の水を主成分としたリサイクル
流れである。ａ点の下流側では。The flow at point a is a recycled flow whose main component is water at room temperature and pressure. On the downstream side of point a.
０、 、 Ｃａ （ｏＨ）＝、 ＮａｏＨ，廃溶媒（
ドデカン、ＴＢＰ）、界面活性剤が添加される。0, , Ca (oH)=, NaoH, waste solvent (
dodecane, TBP), surfactants are added.
（１旦し０２は高圧ポンプ出口にて添加してもよい。ま
たドデカン／ＴＢＰ＝７０／３０であ□る。）これを、
高圧ポンプ１で加圧し、ｂ点では〜１００ｋｇ／ｃｄ（
１００ｋｇ／ｃ＝ｉ以下）とするが、圧力は反応器３（
チューブリアクター）での反応温度の飽和水蒸気圧力以
上が必要である。(Once added, 02 may be added at the high pressure pump outlet. Also, dodecane/TBP = 70/30.)
Pressurize with high pressure pump 1, and at point b ~100 kg/cd (
100kg/c=i or less), but the pressure is in reactor 3 (
The reaction temperature (tube reactor) must be higher than the saturated steam pressure.
熱交換器２で反応器３出口からの高温流れとの熱交換に
よシ件温される。The temperature is increased in heat exchanger 2 by heat exchange with the hot stream from the outlet of reactor 3.
加熱ヒータ４でさらに加熱を続けながら反応器３（チュ
ーブリアクター）中を通過する約１０分（約１ｏ分で反
応は終了する）の滞留時間内に、水熱条件下での酸化分
解反応及びドデカン、ＴＢＰの分解、生成物のリン酸及
び炭酸と添加剤Ｃ１Ｌ（ｏＨ）、 の中和反応が進む
。この反応温度は２００°Ｃ〜３００″Ｃとする（Ｃ点
）。反応器３を出た流れＣ′は熱交換器２によシ降温さ
れ、減圧弁（或いはオリフィス）５により減圧され、ｄ
点では常温、常圧に戻る。The oxidative decomposition reaction and dodecane under hydrothermal conditions occur during the residence time of about 10 minutes (the reaction is completed in about 1 minute) while passing through the reactor 3 (tube reactor) while continuing to be heated by the heater 4. , the decomposition of TBP, and the neutralization reaction between the products phosphoric acid and carbonic acid and the additive C1L (oH) proceed. The reaction temperature is 200°C to 300″C (point C). The stream C′ leaving the reactor 3 is cooled by the heat exchanger 2, and the pressure is reduced by the pressure reducing valve (or orifice) 5.
At the point, the temperature and pressure return to normal.
しかる後に流れは気−液分離器６で余剰αを分離し、固
−液分離器７で生成固形分（ＣａＣｏ２とＣａｓ （Ｐ
０４ ）３ ｏＨの混合物）を分離し、残留液（主に
水）ｅはリサイクルされる（第１図中矢印ｆ）。After that, the flow is passed through a gas-liquid separator 6 to separate excess α, and a solid-liquid separator 7 to separate the produced solids (CaCo2 and Cas (P
The residual liquid (mainly water) is recycled (arrow f in Figure 1).
また、糸からの生成物（Ｃａ Ｃｏ、 、 Ｃａｓ 、
（Ｐｏ、 ）＝ｏＨ）は、シリカを添加すると容易に水
熱固化できる。In addition, products from yarn (Ca Co, , Cas,
(Po, )=oH) can be easily hydrothermally solidified by adding silica.
以下処理廃溶媒量を０．１ ｒｒｌ／ ｈｒとした場合
の水及び添加物量の例を次に示す。Examples of amounts of water and additives are shown below, assuming that the amount of waste solvent to be treated is 0.1 rrl/hr.
１、循環水量 １ｒｒ？／ｈｒ２、添加物
量
Ｏｘ ３５０ Ｎｍ？／ ｈｒＣａ （０Ｈ
）ｚ １０ ｋｇ／ ｈｒＮａＯＨ１５ｋｇ／
ｈｒ
界面活性剤 １ノ／ｈｒ
〔発明の効果〕
以下２本発明の奏する効果を挙げると。1. Circulating water amount 1rr? /hr2, additive amount Ox 350 Nm? / hrCa (0H
)z 10 kg/hrNaOH15kg/
hr Surfactant 1/hr [Effects of the Invention] Below are two effects of the present invention.
（１）循環系であるから、系外へ放出される２次廃棄物
が少なく、安全である。すなわち。(1) Since it is a circulatory system, there is little secondary waste released outside the system and it is safe. Namely.
水熱反応のための水を再利用することにより、系外へ放
出されるものが固形分（後で水熱固化する）と余剰０２
及び適宜な余剰水分だけである。By reusing water for hydrothermal reactions, what is released outside the system is solid content (later hydrothermally solidified) and surplus 02
and appropriate excess water.
（２）水熱条件下で、酸化分解処理（湿式燃焼工程ンす
るため、低温である。(2) The temperature is low because the oxidative decomposition treatment (wet combustion process) is carried out under hydrothermal conditions.
（３） Ｔ Ｂ Ｐの分解によシ生じるリン酸の反応器
材質への腐食が少ない。すなわち、廃棄物と同時にＣａ
（ＯＨ）、を系内に添加することによシ２反応器（チュ
ーブリアクター）中でＴＢＰの分解からリン酸が生じる
と同時に、 Ｃａ（ＯＩ−１）、で中和されるので、
また。(3) Less corrosion of the reactor material by phosphoric acid produced by the decomposition of TBP. In other words, waste and Ca
By adding (OH) into the system, phosphoric acid is generated from the decomposition of TBP in the tube reactor, and at the same time it is neutralized with Ca (OI-1).
Also.
反応器（チューブリアクター）中を流動しながら反応が
進むことにより、リン酸による反応器材質への腐食が少
ない。As the reaction progresses while flowing through the reactor (tube reactor), there is less corrosion of the reactor material by phosphoric acid.
第１図は本発明の一実施例の説明図である。
１・・・高圧ポンプ、２・・・熱交換器、３・・・反応
器（チューブリアクター）、４・・・加熱ヒータ、５・
・・減圧弁、６・・・気−液分離器、７・・・固−液分
離器。FIG. 1 is an explanatory diagram of an embodiment of the present invention. 1... High pressure pump, 2... Heat exchanger, 3... Reactor (tube reactor), 4... Heater, 5...
...Pressure reducing valve, 6... Gas-liquid separator, 7... Solid-liquid separator.
Claims (1)
方法において、同溶媒と水酸化カルシウム、水酸化ナト
リウム、酸素等の添加剤とを水を主成分とするリサイク
ル液に加える第１工程、同第１工程の後同液をチューブ
リアクタ等の反応器を用いて連続的に水熱条件下で酸化
分解処理する第２工程、同第２工程の後同液から余剰酸
素と生成固形物と適宜余剰水を分離する第３工程、同第
３工程の後残留液をリサイクル液として第１工程へ送る
リサイクル工程を有してなることを特徴とする廃溶媒の
水熱処理方法。In a method for treating waste solvents containing dodecane and tributyl phosphate, the first step is to add the same solvent and additives such as calcium hydroxide, sodium hydroxide, oxygen, etc. to a recycled liquid mainly composed of water; After that, the same liquid is continuously oxidized and decomposed under hydrothermal conditions using a reactor such as a tube reactor. A method for hydrothermal treatment of waste solvent, comprising a third step of separating, and a recycling step of sending the residual liquid after the third step to the first step as a recycled liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24594786A JPS63100400A (en) | 1986-10-16 | 1986-10-16 | Hydrothermal processing method of waste solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24594786A JPS63100400A (en) | 1986-10-16 | 1986-10-16 | Hydrothermal processing method of waste solvent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63100400A true JPS63100400A (en) | 1988-05-02 |
Family
ID=17141223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24594786A Pending JPS63100400A (en) | 1986-10-16 | 1986-10-16 | Hydrothermal processing method of waste solvent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63100400A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5276251A (en) * | 1990-01-17 | 1994-01-04 | Mitsubishi Nuclear Fuel Co. | Process for treating organic phosphoric acids |
-
1986
- 1986-10-16 JP JP24594786A patent/JPS63100400A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5276251A (en) * | 1990-01-17 | 1994-01-04 | Mitsubishi Nuclear Fuel Co. | Process for treating organic phosphoric acids |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2239899C2 (en) | Radioactive graphite treatment process | |
| US4882020A (en) | Process for treating effluent gas | |
| US4911900A (en) | Method of removing nitrogen oxides from a flue gas stream | |
| US4352332A (en) | Fluidized bed incineration of waste | |
| JP2000506062A (en) | Desulfurization method and apparatus by electron beam irradiation | |
| EP0179994B1 (en) | Process for drying a chelating agent | |
| JPS6337360B2 (en) | ||
| JP2000065986A (en) | Method and device for treating radioactive organic waste | |
| JPS63100400A (en) | Hydrothermal processing method of waste solvent | |
| JPS5855302Y2 (en) | Coal ash processing equipment | |
| JPH0521609B2 (en) | ||
| JPS60122400A (en) | Method of heating and decomposing used ion exchange resin | |
| JP3923607B2 (en) | Solid waste treatment equipment | |
| CN113643837B (en) | Mineralization-oxidation treatment process for radioactive TBP/OK organic waste liquid | |
| JPS62129799A (en) | Method of decomposing and processing radioactive wastedorganic solvent | |
| JPS5531439A (en) | Treatment of incinerated ash containing chromium | |
| JPS5995922A (en) | Denitration method of gas containing nox | |
| JPH04141216A (en) | Wet exhaust gas desulfurizing method | |
| JPH0720280A (en) | Method for treating primary coolant of pressurized water reactor | |
| JP3006078B2 (en) | Processing method and equipment for activated carbon | |
| JPS5768197A (en) | Treatment of waste water | |
| JP2624898B2 (en) | Decomposition method of radioactive waste organic solvent | |
| CN112591766A (en) | Device and method for removing and utilizing ammonia in ash of coal-fired power plant | |
| JPS6049012B2 (en) | How to regenerate denitrification catalyst | |
| JPS6045957B2 (en) | Treatment method for fluorine in flue gas desulfurization wastewater |