JPS6263897A - Recombiner for exhaust gas - Google Patents
Recombiner for exhaust gasInfo
- Publication number
- JPS6263897A JPS6263897A JP18850086A JP18850086A JPS6263897A JP S6263897 A JPS6263897 A JP S6263897A JP 18850086 A JP18850086 A JP 18850086A JP 18850086 A JP18850086 A JP 18850086A JP S6263897 A JPS6263897 A JP S6263897A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- temperature
- preheater
- gas
- reaction vessel
- 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
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Separation Of Gases By Adsorption (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〕
本発明は主として、沸騰水型原子力発電所の放射性気体
廃棄物処理設備に係わり、原子炉水の放射線分解によっ
て生じる水素および酸素の除去に用いられている排ガス
再結合装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention mainly relates to radioactive gaseous waste treatment equipment for boiling water nuclear power plants, and is used to remove hydrogen and oxygen produced by radiolysis of reactor water. The present invention relates to an exhaust gas recombination device.
沸騰水型原子力発電所の放射性気体廃棄物処理系のフロ
ーは第1図の通りとなっている。The flow of the radioactive gas waste treatment system in a boiling water nuclear power plant is shown in Figure 1.
原子炉水の放射線分解によって生じた水素・酸素ガスは
、主復水器2の漏洩空気とともに空気抽出器3により、
主復水器より抽気され、空気抽出器の駆動蒸気により、
爆鳴気限界以下に希釈された後、排ガス予熱器4で所内
蒸気により処理ガスの飽和温度より約30℃高くなる様
に温度調節される。排ガス予熱器を出た処理ガスは排ガ
ス再結合器5内の触媒により、酸素・水素ガスは水蒸気
となる。水蒸気は排ガス復水器6により、駆動蒸気とと
もに凝縮され除去される。水素、酸素、水蒸気を除去さ
れた放射性排ガスは半減期の長いに’tXeを活性炭吸
着塔7により減衰された後排気筒8より大気へ放出され
る。Hydrogen and oxygen gases generated by radiolysis of reactor water are extracted together with leaked air from the main condenser 2 by an air extractor 3.
Air is extracted from the main condenser and driven by steam from the air extractor.
After being diluted to below the detonation gas limit, the exhaust gas preheater 4 adjusts the temperature using in-house steam to be about 30° C. higher than the saturation temperature of the process gas. The treated gas that has exited the exhaust gas preheater is turned into water vapor by the catalyst in the exhaust gas recombiner 5. The water vapor is condensed and removed together with the driving steam by the exhaust gas condenser 6. The radioactive exhaust gas from which hydrogen, oxygen, and water vapor have been removed has a long half-life, and 'tXe is attenuated by the activated carbon adsorption tower 7, and then released into the atmosphere from the exhaust stack 8.
排ガス再結合器に充填される触媒は水分が流入すると再
結合反応が悪くなるという欠点があるため、従来、本装
置の起動に先立ち、空気供給装置9より空気を注入し、
排ガス予熱器により昇温された空気により、排ガス予熱
器と排ガス再結合器間の配管を加温させ排ガス再結合器
内にドレンが流入しない様にしている。Since the catalyst filled in the exhaust gas recombiner has the disadvantage that the recombination reaction worsens when moisture flows into it, conventionally, before starting the device, air is injected from the air supply device 9.
The air heated by the exhaust gas preheater warms the piping between the exhaust gas preheater and the exhaust gas recombiner to prevent condensate from flowing into the exhaust gas recombiner.
尚、本発明に関連する技術としては、特開昭55−15
8600号公報に記載されたものがある。Note that the technology related to the present invention is disclosed in Japanese Patent Application Laid-open No. 55-15
There is one described in Publication No. 8600.
しかし下流の活性炭吸着塔等の処理容器より大量の空気
を流すことができない為、排ガス予熱器を通しても定格
の約1/200の流量であるため、熱交換が悪く配管を
昇温させるのに非常に時間がかかり、かつ充分に昇温で
きないという欠点がある。又、排ガス予熱器、排ガス再
結合器、排ガス復水器は100%容量2系統で構成され
1系統運転、1系統時機となっている。運転系統を待機
側へ切換える場合、主復水器からの漏洩空気がある為、
活性炭吸着塔の容量から、昇温のための空気を余り流す
ことができない。したがって、待機側に切換えた場合、
排ガス予熱器、排ガス再結合間の配管を昇温しでおくこ
とができない為、水蒸気の一部が凝縮し、再結合内に流
入し、一時的に性能が低下するという結点がある。However, since it is not possible to flow a large amount of air from downstream processing vessels such as activated carbon adsorption towers, the flow rate is about 1/200 of the rated value even through an exhaust gas preheater, so it is difficult to heat the pipes due to poor heat exchange. The disadvantage is that it takes time to heat up and the temperature cannot be raised sufficiently. In addition, the exhaust gas preheater, exhaust gas recombiner, and exhaust gas condenser are composed of two systems with 100% capacity, one in operation and one in timing. When switching the operating system to the standby side, there is air leakage from the main condenser.
Due to the capacity of the activated carbon adsorption tower, it is not possible to flow much air to raise the temperature. Therefore, when switching to the standby side,
Since the temperature of the piping between the exhaust gas preheater and the exhaust gas recombination cannot be kept elevated, some of the water vapor condenses and flows into the recombination, resulting in a temporary drop in performance.
本発明は上記の従来技術の欠点を解消する方法を提供す
ることにある6
〔問題点を解決するための手段〕
本発明は前記目的を達成するた排ガス再結合装置を次の
ように構成した。The object of the present invention is to provide a method for solving the above drawbacks of the prior art.6 [Means for Solving the Problems] In order to achieve the above object, the present invention has an exhaust gas recombination device configured as follows. .
即ち、水素ガス及び酸素ガスを含む排ガスを導入し、前
記水素ガス及び酸素ガスを触媒を充填した反応容器内で
水蒸気に再結合させる装置において、前記反応容器へ導
入する排ガスを飽和温度以上に予熱する予熱器と、該予
熱器と前記反応容器を結ぶ配管の管壁に設けられた温度
検出器と、前記予熱器と反応容器の間の配管の外部に設
けられ。That is, in an apparatus in which exhaust gas containing hydrogen gas and oxygen gas is introduced and the hydrogen gas and oxygen gas are recombined into water vapor in a reaction vessel filled with a catalyst, the exhaust gas introduced into the reaction vessel is preheated to a temperature higher than the saturation temperature. a temperature detector provided on a pipe wall of a pipe connecting the preheater and the reaction vessel; and a temperature detector provided outside the pipe between the preheater and the reaction vessel.
且つ前記検出器の出力に基づき該配管を加熱する手段で
あって、その温度調節の下限温度を通常運転時の蒸気の
飽和温度より若モ高く、また、上限温度を通常運転時の
予熱器の出口ガス温度よりも若干低くしたヒータを設け
、前記目的を達成するものである。and a means for heating the pipe based on the output of the detector, the lower limit temperature of which is set to be slightly higher than the saturation temperature of steam during normal operation, and the upper limit temperature is set to be slightly higher than the saturation temperature of the steam during normal operation. The above objective is achieved by providing a heater whose temperature is slightly lower than the outlet gas temperature.
予熱器と反応容器との間の配管の管壁の温度を検出し、
この温度が処理ガスを導入した時の蒸気の飽和温度以上
になる様に配管をヒータにより加熱しているので、触媒
式の再結合にドレンが流入せず、触媒の再結器反応の低
下を防止することができる。また、ヒータの温度調節の
上限温度を排ガス予熱器出口のガス温度よりも低く設定
しているので、通常運転時のヒータによる加熱が不要と
なる。Detects the temperature of the pipe wall of the piping between the preheater and the reaction vessel,
The piping is heated by a heater so that this temperature is higher than the saturation temperature of the steam when the process gas is introduced, so condensate does not flow into the catalytic recombination, and the catalytic recombiner reaction decreases. It can be prevented. Further, since the upper limit temperature of the heater temperature adjustment is set lower than the gas temperature at the outlet of the exhaust gas preheater, heating by the heater during normal operation becomes unnecessary.
本発明の詳細について、第2図の実施例で説明する。 The details of the present invention will be explained with reference to the embodiment shown in FIG.
排ガス予熱器と排ガス再結合器間の配管10の外表面に
ヒータ11が取付けられており、配壁に温度検出計が設
けられ、この温度計によりヒータが調節されている。ヒ
ータの回りには保温材15が巻付けられている。A heater 11 is attached to the outer surface of the pipe 10 between the exhaust gas preheater and the exhaust gas recombiner, and a temperature detector is provided on the distribution wall, and the heater is regulated by this thermometer. A heat insulating material 15 is wrapped around the heater.
排ガス再結合装置に処理ガスを流入させる前にヒータの
電源を入れ、配管を昇温させる。配管は管表面の温度を
検出し、この温度が、処理ガスを流した時の蒸気の飽和
温度以上になる様に、コントロールする。Before the process gas flows into the exhaust gas recombination device, the heater is turned on to raise the temperature of the piping. The temperature of the pipe surface is detected and controlled so that this temperature is equal to or higher than the saturation temperature of the steam when the processing gas is flowing.
本発明によれば、配管を短時間の内に容易に昇温させる
ことかでき、処理ガスを通気しても凝縮水が発生しない
ので、触媒の性能低下が生じない。According to the present invention, the temperature of the piping can be easily raised within a short period of time, and no condensed water is generated even when the process gas is vented, so that the performance of the catalyst does not deteriorate.
酸素・水素ガスを含む処理ガスは排ガス予熱器により、
蒸気の飽和温度より数十度高くなる様に所内蒸気により
加熱され温度コントロールされるので、ヒータの温度調
節の上限温度を一ヒ記の排ガス予熱器出口ガス温度より
も低く設定しておくことにより、通常運転中はヒータは
通電しなくて済む。Processing gas containing oxygen and hydrogen gas is processed by an exhaust gas preheater.
Since the temperature is controlled by in-house steam to be several tens of degrees higher than the saturated temperature of the steam, by setting the upper limit temperature of the heater temperature control to be lower than the exhaust gas preheater outlet gas temperature mentioned above. , the heater does not need to be energized during normal operation.
本発明によれば、再結合器の触媒の性能低下を生じずに
、容易に起動及び待機側への切換えを行なうことができ
る排ガス再結合装置が得られる。According to the present invention, it is possible to obtain an exhaust gas recombination device that can be easily activated and switched to the standby side without deteriorating the performance of the catalyst in the recombiner.
第1図は本発明の主たる対象の放射性気体廃棄物処理系
のフロー図、第2図は本発明の詳細な説明図、第3図は
本発明の詳細図を示す。
3・・・空気抽出器、4・・・排ガス予熱器、5・・・
排ガス再結合器、10・・・配管、11・・・ヒータ、
12・・・電源、13・・・温度検出計、14・・・ス
ーイッチ、15・・・保温材、16・・・温度検出計、
17・・・温度調整弁。FIG. 1 is a flow diagram of a radioactive gas waste treatment system which is the main subject of the present invention, FIG. 2 is a detailed explanatory diagram of the present invention, and FIG. 3 is a detailed diagram of the present invention. 3... Air extractor, 4... Exhaust gas preheater, 5...
Exhaust gas recombiner, 10... Piping, 11... Heater,
12...Power source, 13...Temperature detector, 14...Switch, 15...Heat insulation material, 16...Temperature detector,
17...Temperature adjustment valve.
Claims (1)
水素ガス及び酸素ガスを触媒を充填した反応容器内で水
蒸気に再結合させる装置において、前記反応容器へ導入
する排ガスを飽和温度以上に予熱する予熱器と、 該予熱器と前記反応容器を結ぶ配管の管壁に設けられた
温度検出器と、 前記予熱器と反応容器の間の配管の外部に設けられ、且
つ前記検出器の出力に基づき該配管を加熱する手段であ
って、その温度調節の下限温度を通常運転時の蒸気の飽
和温度より若干高く、また、上限温度を通常運転時の予
熱器の出口ガス温度よりも若干低くしたヒータと、 を有する排ガス再結合装置。[Claims] 1. In an apparatus for introducing exhaust gas containing hydrogen gas and oxygen gas and recombining the hydrogen gas and oxygen gas into water vapor in a reaction vessel filled with a catalyst, the exhaust gas introduced into the reaction vessel. a preheater for preheating to a saturation temperature or higher; a temperature detector provided on the pipe wall of a pipe connecting the preheater and the reaction vessel; a temperature detector provided outside the pipe between the preheater and the reaction vessel; A means for heating the piping based on the output of the detector, the lower limit temperature of which is set to be slightly higher than the saturation temperature of steam during normal operation, and the upper limit temperature is set to be slightly higher than the steam saturation temperature during normal operation. An exhaust gas recombination device comprising: a heater whose temperature is slightly lower than that of the exhaust gas recombiner;
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18850086A JPS6263897A (en) | 1986-08-13 | 1986-08-13 | Recombiner for exhaust gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18850086A JPS6263897A (en) | 1986-08-13 | 1986-08-13 | Recombiner for exhaust gas |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6263897A true JPS6263897A (en) | 1987-03-20 |
JPH033200B2 JPH033200B2 (en) | 1991-01-17 |
Family
ID=16224813
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18850086A Granted JPS6263897A (en) | 1986-08-13 | 1986-08-13 | Recombiner for exhaust gas |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6263897A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55124100A (en) * | 1979-03-19 | 1980-09-24 | Hitachi Ltd | Nuclear reactor offfgas system |
JPS55158600A (en) * | 1979-05-28 | 1980-12-10 | Tokyo Shibaura Electric Co | Recombiner |
-
1986
- 1986-08-13 JP JP18850086A patent/JPS6263897A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55124100A (en) * | 1979-03-19 | 1980-09-24 | Hitachi Ltd | Nuclear reactor offfgas system |
JPS55158600A (en) * | 1979-05-28 | 1980-12-10 | Tokyo Shibaura Electric Co | Recombiner |
Also Published As
Publication number | Publication date |
---|---|
JPH033200B2 (en) | 1991-01-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4190515A (en) | Apparatus for removal and recovery of tritium from light and heavy water | |
CA2129774A1 (en) | Device for Passively Inerting the Gas Mixture in the Reactor Containment of a Nuclear Power Plant | |
JPS6263897A (en) | Recombiner for exhaust gas | |
JPS5758012A (en) | Method and device for waste gas treatment | |
JPS5819599A (en) | Heating device for recombiner of radioactive gaseous waste processing system | |
JPS5853603A (en) | Method of sealing turbine gland by utilizing waste heat | |
JPS63311200A (en) | Off-gas treatment equipment for nuclear power plant | |
JPH03144400A (en) | Treatment device of radioactive gaseous waste | |
JPS5740937A (en) | Manufacture of semiconductor device | |
JPS58159Y2 (en) | Radioactive gas waste treatment equipment | |
JPH0395498A (en) | Recombining system for off-gas system | |
JPS6150280B2 (en) | ||
JPH10288694A (en) | Burnable gas processor | |
JPS58223800A (en) | Method of heating condensed liquid waste storage tank for atomic power plant | |
JPH0531758B2 (en) | ||
JPS6332396A (en) | Gas recombination facility | |
JP2809764B2 (en) | Radioactive gas waste treatment equipment | |
JPS59112295A (en) | Oxygen.hydrogen recombiner | |
JPS60219594A (en) | Oxyhydrogen recombination instrument | |
JPH11248883A (en) | Radioactive gas waste processing system | |
JPH0493700A (en) | Exhaust of gas treatment device | |
JPS5967499A (en) | Recombiner for processing radioactive gaseous waste | |
JPS5467592A (en) | Regeneration of active carbon | |
JPS57136919A (en) | Method for regulating gaseous temperature in stack gas desulfurization | |
JPH01201195A (en) | Off-gas system recombination system |