JPS6034487B2 - Metal nitrate heating denitrification equipment - Google Patents
Metal nitrate heating denitrification equipmentInfo
- Publication number
- JPS6034487B2 JPS6034487B2 JP4653480A JP4653480A JPS6034487B2 JP S6034487 B2 JPS6034487 B2 JP S6034487B2 JP 4653480 A JP4653480 A JP 4653480A JP 4653480 A JP4653480 A JP 4653480A JP S6034487 B2 JPS6034487 B2 JP S6034487B2
- Authority
- JP
- Japan
- Prior art keywords
- metal nitrate
- container
- main body
- partition member
- partition
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/14—Methods for preparing oxides or hydroxides in general
- C01B13/18—Methods for preparing oxides or hydroxides in general by thermal decomposition of compounds, e.g. of salts or hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/122—Incoherent waves
- B01J19/126—Microwaves
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Description
【発明の詳細な説明】
本発明は硝酸ゥラニル溶液、硝酸プルトニウム溶液ある
いはこれらの混合溶液等の金属硝酸塩溶液をマイクロ波
照射により加熱脱硝する装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for heating and denitrifying a metal nitrate solution such as a uranyl nitrate solution, a plutonium nitrate solution, or a mixed solution thereof by microwave irradiation.
従来たとえば使用済核燃料を再処理して得られた硝酸ゥ
ラニルまたは硝酸プルトニウムを脱硝して酸化物を得る
にはこれらの溶液をステンレス鋼製の容器に入れ、これ
をマイクロ波加熱脱硝装置内に搬入し、マイクロ波の照
射によって加熱脱硝して酸化物を生成して、こののち上
記容器を搬出して酸化物を回収するいわゆるバッチ方式
で処理していた。Conventionally, for example, to denitrify uranyl nitrate or plutonium nitrate obtained by reprocessing spent nuclear fuel to obtain oxides, these solutions are placed in a stainless steel container and transported into a microwave heating denitrification equipment. However, the treatment has been carried out in a so-called batch method, in which oxides are generated by heating and denitrifying with microwave irradiation, and then the container is taken out to recover the oxides.
したがって作業能率が悪く、多量に処理することは困難
であった。本発明は以上の事情にもとづいてなされたも
ので、その目的とするところは硝酸ウラニル、硝酸プル
トニウム等の金属硝酸塩を能率的に加熱脱硝することが
できる装置を得ることにある。Therefore, work efficiency was poor and it was difficult to process large quantities. The present invention has been made based on the above circumstances, and its object is to provide an apparatus that can efficiently denitrify metal nitrates such as uranyl nitrate and plutonium nitrate by heating.
以下本発明を図面に示す一実施例にしたがって説明する
。The present invention will be explained below according to an embodiment shown in the drawings.
図中１は本体容器であって、この本体容器１は基台（図
示せず）等に固定されている。この本体容器１はたとえ
ば四ふつ化エチレン樹脂等のマイクロ波透過性の材料で
形成され、上面が閉口した円形をなしている。そして、
この本体容器１内には仕切部材２が回転自在に設けられ
ている。この仕切部材２には複数の仕切板３・・・が放
射状に設けられており、これらの仕切板３・・・は本体
容器１の内周面および底面に液密をもって摺動自在に密
接し、これらの仕切板３・・・によって本体容器１内が
周方向に仕切られ、この仕切部材２が回転することによ
って本体容器１内に収容された金属硝酸塩溶液や酸化物
を周方向に移送するように構成されている。そして、上
記仕切板３・・・は第４図は示す如く本体部３ａ・・・
とこの本体部３ａ・・・に上下に摺動自在に鉄合された
摺動部材３ｂ・・・とから構成され、これらの摺動部材
３ｂ・・・はばね４・・・によって下方に付勢され、本
体容器１の底面に密接するように構成されている。また
、上記摺動部材３ｂ・・・の回転前方側面の上縁部には
それぞれ突条部５・・・が形成され、これらの摺動部材
３ｂ・・・によって送られる酸化物等がこれらの摺動部
材３ｂ・・・の前面に沿って盛り上り、仕切板３・・・
を乗り越えることを防止するように構成されている。ら
お、この仕切部材２は上記本体容器１と同機にマイクロ
波透過性の材料で形成されている。そして、この仕切部
材２の中心からは駆動軸６が下方に向けて突設され、こ
の駆動軸６は本体容器１の中心部に形成された軸挿通孔
７を通って下方に延長され、回転駆動機構８に連結され
ており、この回転駆動機構８によって仕切部材２が所定
の速度で回転されるように構成されている。また、９は
金属硝酸塩溶液を供給する溶液供給機構であって、溶液
供給管１０を介して硝酸ウラニル溶液、硝酸プルトニウ
ム溶液あるいはこれらの混合溶液を本体容器１内に所定
量ずつ供給するように構成されている。また、１１はマ
イクロ波照射機構である。１２はそのカバーであって、
本体容器１の一部を囲綾するように構成されている。In the figure, 1 is a main container, and this main container 1 is fixed to a base (not shown) or the like. The main body container 1 is made of a microwave-transparent material such as tetrafluoroethylene resin, and has a circular shape with a closed top surface. and,
A partition member 2 is rotatably provided within the main container 1. The partition member 2 is provided with a plurality of partition plates 3 in a radial manner, and these partition plates 3 are slidably and fluid-tightly brought into close contact with the inner peripheral surface and bottom surface of the main container 1. The interior of the main container 1 is partitioned in the circumferential direction by these partition plates 3..., and the metal nitrate solution and oxide contained in the main container 1 are transferred in the circumferential direction by rotation of the partition members 2. It is configured as follows. As shown in FIG. 4, the partition plate 3... is the main body part 3a...
and a sliding member 3b... which is iron-coupled to the main body part 3a... so as to be able to slide up and down, and these sliding members 3b... are attached downwardly by springs 4... The main body container 1 is configured so as to be in close contact with the bottom surface of the main body container 1. In addition, protrusions 5 are formed on the upper edges of the rotating front side surfaces of the sliding members 3b, respectively, and oxides, etc. sent by these sliding members 3b, etc. It rises along the front surface of the sliding member 3b... and the partition plate 3...
It is designed to prevent overcoming. Furthermore, this partition member 2 is formed of the same material as the main body container 1 and is made of a material that is transparent to microwaves. A drive shaft 6 is provided to protrude downward from the center of the partition member 2, and this drive shaft 6 is extended downward through a shaft insertion hole 7 formed in the center of the main container 1, and rotates. It is connected to a drive mechanism 8, and is configured such that the rotation drive mechanism 8 rotates the partition member 2 at a predetermined speed. Further, 9 is a solution supply mechanism for supplying a metal nitrate solution, and is configured to supply a predetermined amount of a uranyl nitrate solution, a plutonium nitrate solution, or a mixed solution thereof into the main body container 1 via a solution supply pipe 10. has been done. Further, 11 is a microwave irradiation mechanism. 12 is its cover,
It is configured to surround a part of the main container 1.
そして、このカバー１２には複数の導波管１３，１３が
接続され、これら導波管１３，１３はそれぞれマイクロ
波発振器１４，１４に接続され、そして、これらマイク
ロ波発振器１４，１４から導波管１３，１３を介してカ
バー１２内にマイクロ波が発振され、上記仕切部材２の
回転によって本体容器１内を周方向に移送される金属硝
酸塩溶液にこのマイクロ波が照射され加熱脱硝されるよ
うに構成されている。また、このカバー１２には排気管
１５・・・が接続され、これらの排気管１５…は排ガス
処理機構１ ６にそれぞれ擬続されている。そして、金
属硝酸塩溶液の加熱脱硝の際に生じたガスはこれら排気
管１５・・・を介して排ガス処理機構１６に吸引され、
処理がなされるように構成されている。また、上記本体
容器１の底壁の一部には扇形の排出口１７が形成されて
いる。そして、上記マイクロ波照射機構１１で加熱脱硝
されて生成された粉末状あるいは粒状の酸化物は仕切部
材２の回転によって移送され、この排出口１７より落下
排出されるように構成されている。そして、この排出口
１７の下方には受容器１８が設けられ、落下排出された
酸化物を受けるように構成されている。以上の如く構成
された本発明の一実施例は硝酸ウラニル溶液、硝酸プル
トニウム溶液あるいはこれらの混合溶液が溶液供給機構
９から溶液供給管１０を介して本体容器１内に供給され
る。A plurality of waveguides 13, 13 are connected to this cover 12, these waveguides 13, 13 are connected to microwave oscillators 14, 14, respectively, and waveguides from these microwave oscillators 14, 14 are connected. Microwaves are oscillated in the cover 12 through the pipes 13, 13, and the metal nitrate solution that is transferred in the circumferential direction inside the main container 1 by the rotation of the partition member 2 is irradiated with the microwaves so that the metal nitrate solution is heated and denitrified. It is composed of Further, exhaust pipes 15 are connected to the cover 12, and these exhaust pipes 15 are connected to an exhaust gas treatment mechanism 16, respectively. Then, the gas generated during heating denitration of the metal nitrate solution is sucked into the exhaust gas treatment mechanism 16 through these exhaust pipes 15...
It is configured to perform processing. Further, a fan-shaped discharge port 17 is formed in a part of the bottom wall of the main body container 1. Powdered or granular oxides generated by heating and denitrification in the microwave irradiation mechanism 11 are transported by the rotation of the partition member 2 and are configured to fall and be discharged from the discharge port 17. A receiver 18 is provided below the discharge port 17 and is configured to receive the oxides that have fallen and been discharged. In one embodiment of the present invention constructed as described above, a uranyl nitrate solution, a plutonium nitrate solution, or a mixed solution thereof is supplied into the main body container 1 from the solution supply mechanism 9 via the solution supply pipe 10.
そしてこの供給された溶液は仕切部材２の回転によって
本体容器１内を筒方向に送られる。そして、マイクロ波
照射機構１１のカバー１２内を通過する際にマイクロ波
が照射され、この金属硝酸塩溶液は加熱脱硝され粉末状
あるいは粒状の酸化物が生成される。そして、この生成
された酸化物は仕切部村２の回転によってさらに移送さ
れ、排出ロー７より落下排出される。したがって、硝酸
ウラニル溶液等の金属硝酸塩溶液は連続的に処理され、
その処理能率はきわめて高くなる。また、この一実施例
では仕切部村２の仕切板３・・・には摺動部材３ｂ・・
・が設けられ、これらの酒動部材３ｂ・・・はばね４・
・・の付勢力にって本体容器１の底面に押圧されている
ので、底面との密度が確実に維持される。また、上記情
動部材３ｂ…の回転方向前面側には突条部５・・・が形
成されているので、粉末状あるいは粒状となった酸化物
を移送する際にこの酸化物が仕切板３・・・に沿って盛
り上ってもこれらの突条部５・・・に当って下方に落下
され、この酸化物が仕切板３・・・を乗り越してしまう
ようなことが防止される。なお、本発明は上記の一実施
例には限定されない。The supplied solution is sent in the cylindrical direction within the main container 1 by the rotation of the partition member 2. Then, when passing through the cover 12 of the microwave irradiation mechanism 11, the metal nitrate solution is irradiated with microwaves, and the metal nitrate solution is heated and denitrated to generate powder or granular oxides. The generated oxide is further transferred by the rotation of the partition section 2 and is discharged from the discharge row 7. Therefore, metal nitrate solutions such as uranyl nitrate solutions are processed continuously;
The processing efficiency becomes extremely high. In addition, in this embodiment, the partition plates 3 of the partition section village 2 have sliding members 3b...
・These driving members 3b... are provided with springs 4.
Since it is pressed against the bottom surface of the main container 1 by the urging force of ..., the density with the bottom surface is reliably maintained. In addition, since the protrusions 5 are formed on the front side in the rotational direction of the emotional members 3b, when the powdered or granular oxide is transferred, the oxide is transferred to the partition plate 3. Even if the oxide builds up along the ridges 5, it hits these protrusions 5 and falls downward, thereby preventing the oxides from going over the partition plates 3. Note that the present invention is not limited to the above embodiment.
たとえば仕切部材の構成は必らずしも上記のものに限定
されず、要は本体容器の内面に液密をもって摺接し、こ
の本体容器内を周方向に仕切る仕切板を備えているもの
であればよい。For example, the structure of the partition member is not necessarily limited to the above-mentioned one, but in short, it may include a partition plate that slides into liquid-tight contact with the inner surface of the main container and partitions the inside of the main container in the circumferential direction. Bye.
また、マイクロ波照射機構の構成も必らずしも上記のも
のに限定されず、要は本体容器内を移送される金属硝酸
塩溶液にマイクロ波を照射して加熱脱硝するものであれ
ばどのようなものでもよい。In addition, the configuration of the microwave irradiation mechanism is not necessarily limited to the one described above, but any type of microwave irradiation mechanism can be used as long as it irradiates the metal nitrate solution transferred within the main container with heat to denitrify it. It can be anything.
上述の如く本発明は円形の本体容器内にその内面に摺接
し内部を周万向に仕切る複数の仕切板を有する仕切部材
を設け、この仕切部村を回転させて本体容器内の金属硝
酸塩溶液等を周万向に移送し、またこの送送される溶液
にマイクロ波を照射して加熱脱硝するマイクロ波照射機
構を設け、さらに本体容器の底壁に排出口を設け加熱脱
硝されて生成された粉末状あるいは粒状の酸化物をこの
排出口より落下排出するものである。As described above, the present invention provides a partition member having a plurality of partition plates in sliding contact with the inner surface of the circular main container to partition the interior in all directions, and rotates the partition members to separate the metal nitrate solution in the main container. A microwave irradiation mechanism is installed to transport the solution in all directions, and a microwave irradiation mechanism is installed to heat and denitrify the solution by irradiating it with microwaves.Furthermore, a discharge port is provided on the bottom wall of the main container to remove the nitrogen generated by heating. The powdered or granular oxide is discharged through this outlet.
したがって金属硝酸塩の加熱脱硝が連続的になされ、大
量の金属硝酸塩を能率的に処理できる等、その効果は大
である。Therefore, heating denitrification of metal nitrates is carried out continuously, and a large amount of metal nitrates can be efficiently processed, which has great effects.
図面は本発明の一実施例を示し、第１図は平面図、第２
図は側面図、第３図は第１図のｍ−ｍ線に沿う断面図、
第４図は第１図のＮ−Ｗ線に沿う断面図である。
１・・・本体容器、２・・・仕切部材、３・・・仕切板
、３ａ・・・本体部、３ｂ…情動部材、４・・・ばね、
８・・・回転駆動機構、９…溶液供給機構、１１・・・
マイクロ波照射機構、１２・・・カバー、１４・・・マ
イクロ波発振器、１５…排気管、１７・・・排出口。
第１図
第２図
第３図
第４図The drawings show one embodiment of the present invention, with FIG. 1 being a plan view and FIG.
The figure is a side view, and Figure 3 is a sectional view taken along line m-m in Figure 1.
FIG. 4 is a sectional view taken along line N-W in FIG. 1. DESCRIPTION OF SYMBOLS 1... Main body container, 2... Partition member, 3... Partition plate, 3a... Main body part, 3b... Emotional member, 4... Spring,
8... Rotation drive mechanism, 9... Solution supply mechanism, 11...
Microwave irradiation mechanism, 12...cover, 14...microwave oscillator, 15...exhaust pipe, 17...exhaust port. Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
て酸化物を得るものにおいて、円形の本体容器と、この
本体容器内を周方向に仕切るとともにこの本体溶液器内
面に液密をもつて摺接する放射状に配置された複数の仕
切板を有する仕切部材と、この仕切部材を回転させる回
転駆動機構と、上記仕切部材によつて仕切られた上記本
体容器内に金属硝酸塩溶液を順次供給する溶液供給機構
と、上記仕切部材の回転によつて移送される上記金属硝
酸塩溶液にマイクロ波を照射して加熱脱硝するマイクロ
波照射機構と、上記本体容器の底面に形成され上記マイ
クロ波の照射によつて生成された酸化物を落下排出する
排出口を具備したことを特徴とする金属硝酸塩加熱脱硝
装置。 ２ 前記仕切部材の仕切板は本体部とこの本体部に摺動
自在に嵌着されるとともにばねによつて付勢され前記本
体容器内面に摺接する摺動部材とを具備したことを特徴
とする前記特許請求の範囲第１項記載の金属硝酸塩加熱
脱硝装置。[Scope of Claims] 1. A device for obtaining oxides by heating and denitrifying a metal nitrate solution by microwave irradiation, which includes a circular main body container, the inside of this main body container is partitioned in the circumferential direction, and the inner surface of this main body solution container is liquid-tight. a partition member having a plurality of radially arranged partition plates that are in sliding contact with each other; a rotational drive mechanism that rotates the partition member; and a metal nitrate solution that is sequentially introduced into the main container partitioned by the partition member. a microwave irradiation mechanism that heats and denitrates the metal nitrate solution transferred by rotation of the partition member by irradiating it with microwaves; A metal nitrate heating denitrification device, characterized in that it is equipped with a discharge port through which oxides generated by irradiation are discharged. 2. The partition plate of the partition member includes a main body and a sliding member that is slidably fitted into the main body and is biased by a spring and slides into contact with the inner surface of the main container. A metal nitrate heating denitrification device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4653480A JPS6034487B2 (en) | 1980-04-09 | 1980-04-09 | Metal nitrate heating denitrification equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4653480A JPS6034487B2 (en) | 1980-04-09 | 1980-04-09 | Metal nitrate heating denitrification equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56145104A JPS56145104A (en) | 1981-11-11 |
| JPS6034487B2 true JPS6034487B2 (en) | 1985-08-09 |
Family
ID=12749948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4653480A Expired JPS6034487B2 (en) | 1980-04-09 | 1980-04-09 | Metal nitrate heating denitrification equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6034487B2 (en) |
-
1980
- 1980-04-09 JP JP4653480A patent/JPS6034487B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56145104A (en) | 1981-11-11 |
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