JP2002096076A - Dissolved oxygen concentration regulating device and regulating method - Google Patents
Dissolved oxygen concentration regulating device and regulating methodInfo
- Publication number
- JP2002096076A JP2002096076A JP2000286589A JP2000286589A JP2002096076A JP 2002096076 A JP2002096076 A JP 2002096076A JP 2000286589 A JP2000286589 A JP 2000286589A JP 2000286589 A JP2000286589 A JP 2000286589A JP 2002096076 A JP2002096076 A JP 2002096076A
- Authority
- JP
- Japan
- Prior art keywords
- dissolved oxygen
- water
- oxygen concentration
- adjuster
- adjusting
- 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.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、供給水中の溶存酸
素及びｐＨを調整する溶存酸素濃度調整装置及び調整方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for adjusting the concentration of dissolved oxygen in feed water.
【０００２】[0002]
【背景技術】供給水中の溶存酸素を調整する方法とし
て、従来においては、図３に示すように、配管０１中
に、Ｏ2 ボンベ０２より直接酸素（Ｏ2 ）を供給する方
法や、空気をエジェクタ等で供給する方法等が提案され
ている。BACKGROUND ART As a method for adjusting dissolved oxygen in supply water, conventionally, as shown in FIG. 3, a method of directly supplying oxygen (O 2 ) from a O 2 cylinder 02 into a pipe 01, or a method of adjusting air. A method of supplying the liquid by an ejector or the like has been proposed.
【０００３】しかしながら、従来の酸素調整方法では、
以下のような問題がある。配管中の供給水の水量が低い
場合（例えば１００ｍｌ／ｍｉｎ）に低い溶存酸素濃度
を達成したい場合には、配管０１内に外部より酸素ボン
ベ０２から供給すると、ガス流量のコントロールが良好
でない場合に、過剰のＯ2 ガスを供給することとなる。However, in the conventional oxygen adjustment method,
There are the following problems. When it is desired to achieve a low dissolved oxygen concentration when the amount of the supply water in the pipe is low (for example, 100 ml / min), supplying the oxygen from the outside into the pipe 01 from the oxygen cylinder 02 can prevent the control of the gas flow rate. , An excess O 2 gas is supplied.
【０００４】また、配管内の系統圧力が高い場合には、
ガスが縮みＯ2 ガスの注入が困難となり、一方系統圧力
が低い場合には、ガスが拡散し、Ｏ2 ガスの注入過多と
なるという問題がある。When the system pressure in the piping is high,
When the gas shrinks, it becomes difficult to inject the O 2 gas. On the other hand, when the system pressure is low, there is a problem that the gas diffuses and the injection of the O 2 gas becomes excessive.
【０００５】よって、ガス流量のコントロールの精度の
高いものは高価であり、実験室レベルの装置には適用す
ることが容易ではないという問題もあるので、供給水中
の溶存酸素を低濃度で安定してしかも簡易な装置で供給
できることが臨まれている。[0005] Therefore, a gas with a high precision in controlling the gas flow rate is expensive and has a problem that it is not easy to apply to a laboratory-level device. Therefore, the dissolved oxygen in the feed water can be stabilized at a low concentration. Moreover, it is expected that it can be supplied by a simple device.
【０００６】本発明は、以上述べた事情に鑑み、簡易な
構成でしかもｐＨの調整と共に酸素濃度も安定して調整
できる溶存酸素調整装置及び調整方法を提供することを
課題とする。SUMMARY OF THE INVENTION In view of the circumstances described above, an object of the present invention is to provide a dissolved oxygen adjusting device and an adjusting method which have a simple configuration and can stably adjust the oxygen concentration together with the pH adjustment.
【０００７】[0007]
【課題を解決するための手段】前記課題を解決する本発
明の［請求項１］の溶存酸素濃度調整装置の発明は、恒
温槽内に設けた内部にｐＨ調整剤を入れたタンクと、所
定温度のｐＨ調整剤を一定量供給する供給ポンプとを具
備してなり、酸素を予め脱気手段により除去した供給水
中に、一定温度に保持されたｐＨ調整剤を供給ポンプに
より供給し、供給水中の溶存酸素及びｐＨを調整するこ
とを特徴とする。According to a first aspect of the present invention, there is provided a dissolved oxygen concentration adjusting apparatus for solving the above-mentioned problems, comprising: A supply pump for supplying a constant amount of a temperature adjusting agent to the supply water from which oxygen has been removed in advance by a degassing means; Characterized in that the dissolved oxygen and pH are adjusted.
【０００８】［請求項２］の発明は、請求項１におい
て、上記ｐＨ調整剤が塩酸，硝酸，硫酸，酢酸，水酸化
ナトリウム，水酸化カリウム，アンモニア水であること
を特徴とする。[0008] The invention of claim 2 is characterized in that in claim 1, the pH adjuster is hydrochloric acid, nitric acid, sulfuric acid, acetic acid, sodium hydroxide, potassium hydroxide, or aqueous ammonia.
【０００９】［請求項３］の発明は、請求項１におい
て、上記ｐＨ調整剤がアンモニア水であり、調整後の供
給水のｐＨが７．０〜９．３、溶存酸素濃度が２０〜２
００μｇ／リットルであることを特徴とする。The invention of claim 3 is the invention according to claim 1, wherein the pH adjuster is ammonia water, the pH of the adjusted supply water is 7.0 to 9.3, and the dissolved oxygen concentration is 20 to 2
It is characterized by being 00 μg / liter.
【００１０】［請求項４］の溶存酸素濃度調整方法発明
は、酸素を予め脱気手段により除去した供給水中に、一
定温度に保持されたｐＨ調整剤を供給ポンプにより供給
し、供給水中の溶存酸素及びｐＨを調整することを特徴
とする。According to a fourth aspect of the present invention, there is provided a method for adjusting the concentration of dissolved oxygen in a supply water from which oxygen has been previously removed by a degassing means, wherein a pH adjusting agent maintained at a constant temperature is supplied by a supply pump to dissolve the dissolved oxygen in the supply water. It is characterized by adjusting oxygen and pH.
【００１１】［請求項５］の発明は、請求項４におい
て、上記ｐＨ調整剤が塩酸，硝酸，硫酸，酢酸，水酸化
ナトリウム，水酸化カリウム，アンモニア水であること
を特徴とする。[0011] The invention of claim 5 is characterized in that, in claim 4, the pH adjuster is hydrochloric acid, nitric acid, sulfuric acid, acetic acid, sodium hydroxide, potassium hydroxide, or aqueous ammonia.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施形態を説明す
るが、本発明はこれに限定されるものではない。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described, but the present invention is not limited thereto.
【００１３】［第１の実施の形態］図１は本実施の形態
にかかる溶存酸素調整装置の概略図である。本実施の形
態にかかる溶存酸素調整装置は、恒温槽１０内に設けた
内部にアンモニア水１１を入れたタンク１２と、所定温
度のｐＨ調整剤であるアンモニア水１１を一定量供給す
る供給ポンプ１３とを具備してなるものである。上記ア
ンモニア水１１は温度が２０℃の場合では、９０００μ
ｇ／リットルの酸素が溶存している。なお、必要に応じ
てタンク１２内を空気１４等でバブリングするようにし
てもよい。[First Embodiment] FIG. 1 is a schematic diagram of a dissolved oxygen adjusting apparatus according to the first embodiment. The dissolved oxygen adjusting apparatus according to the present embodiment includes a tank 12 containing an aqueous ammonia 11 provided in a constant temperature bath 10 and a supply pump 13 for supplying a predetermined amount of aqueous ammonia 11 as a pH adjuster at a predetermined temperature. Is provided. When the temperature of the aqueous ammonia 11 is 20 ° C., 9000 μm
g / liter of oxygen is dissolved. Note that the inside of the tank 12 may be bubbled with air 14 or the like as needed.
【００１４】配管２０内に供給される供給水２１は、図
示しない純水装置により、ｐＨが７．０に調整され、図
示しない脱気タンクにより、酸素が零の状態となってい
る。この状態の水を一定流量（１００ｍｌ／ｍｉｎ）供
給するところに、供給ポンプ１３を用い、所定温度（例
えば２０℃）で一定量の酸素（９０００μｇ／リット
ル）を含むアンモニア水１１を１ｃｃ／ｍｉｎ供給（溶
存酸素量：９μｇ／ｍｌ）することで、ｐＨを９とする
と共に、一定量の溶存酸素量（ＤＯ＝９０μｇ／リット
ル）とした供給水２２のとすることができる。The supply water 21 supplied into the pipe 20 is adjusted to a pH of 7.0 by a pure water device (not shown), and oxygen is reduced to zero by a deaeration tank (not shown). To supply water in this state at a constant flow rate (100 ml / min), use a supply pump 13 to supply 1 cc / min of ammonia water 11 containing a fixed amount of oxygen (9000 μg / liter) at a predetermined temperature (for example, 20 ° C.). (Dissolved oxygen amount: 9 μg / ml), the pH of the supply water 22 can be adjusted to 9 and a fixed amount of dissolved oxygen (DO = 90 μg / liter).
【００１５】図２にアンモニア水の温度と溶存酸素濃度
との関係を示す。FIG. 2 shows the relationship between the temperature of the aqueous ammonia and the concentration of dissolved oxygen.
【００１６】これにより、ｐＨの調整と溶存酸素濃度の
調整とが同時に行うことができ、ＣＷＴ法を適用するボ
イラ給水の実機と同程度の条件を模擬できた実機構成材
へのスケールの付着する供給水を得ることができる。な
お、酸素濃度を急速に変化させたい場合には、タンク１
２中へ供給する酸素濃度を高くすることにより、行う。Thus, the adjustment of the pH and the concentration of the dissolved oxygen can be performed simultaneously, and the scale adheres to the components of the actual machine which can simulate the same conditions as those of the actual machine for boiler feed water to which the CWT method is applied. Feed water can be obtained. If the oxygen concentration needs to be changed rapidly, the tank 1
This is performed by increasing the concentration of oxygen supplied into the fuel cell 2.
【００１７】本実施の形態では、ｐＨ調整剤としてアン
モニア水を用いたが、本発明ではこれに限定されるもの
ではなく、例えば塩酸，硝酸，硫酸，酢酸，水酸化ナト
リウム，水酸化カリウム等の公知のｐＨ調整剤を行うも
のを用いることができる。In the present embodiment, ammonia water is used as the pH adjuster. However, the present invention is not limited to this. For example, hydrochloric acid, nitric acid, sulfuric acid, acetic acid, sodium hydroxide, potassium hydroxide, etc. A known pH adjuster can be used.
【００１８】ここで、ｐＨとＯ2 濃度を一度にコントロ
ールする場合において、ｐＨはｐＨ調整剤の濃度を希釈
又は濃くすることで容易に制御が可能である。Here, when controlling the pH and the O 2 concentration at once, the pH can be easily controlled by diluting or increasing the concentration of the pH adjuster.
【００１９】また、下記「表１」、「表２」に示すよう
に、１００リットル／分のような高給水量の場合には、
１１１１ｍｌ／分と、膨大な量のｐＨ調整剤の供給が必
要となるので、それに伴い、大型のポンプやタンクが必
要となる。その為、大型事業用設備の場合は経済的に酸
素ガス＋ｐＨ調整剤となる。As shown in Tables 1 and 2 below, when the water supply amount is as high as 100 liters / minute,
Since it is necessary to supply a huge amount of a pH adjuster of 1111 ml / min, a large pump and a tank are required. Therefore, in the case of a large business facility, it becomes an oxygen gas + pH adjuster economically.
【００２０】[0020]
【表１】 [Table 1]
【表２】 [Table 2]
【００２１】本発明によれば、ガス状態でＯ2 を供給す
るのでないので、制御が確実となり、安定してＯ2 の濃
度を調整することができる。さらに、ガスのような圧力
変動に起因する問題が解消される。According to the present invention, since O 2 is not supplied in a gaseous state, the control becomes reliable and the O 2 concentration can be adjusted stably. Further, problems caused by pressure fluctuations such as gas are eliminated.
【００２２】よって、溶存酸素注入コントロールの精度
が高いものとなり、実験室レベルの装置に安価に適用す
ることができる。Accordingly, the control of the dissolved oxygen injection control becomes high, and it can be applied to a laboratory level device at low cost.
【００２３】また、低流量の供給水に任意のｐＨの調整
と共に所定量の酸素を同時に供給することができる。In addition, a predetermined amount of oxygen can be simultaneously supplied to the low-flow-rate supply water while adjusting the pH.
【００２４】[0024]
【発明の効果】以上、説明したように本発明の［請求項
１］の発明によれば、恒温槽内に設けた内部にｐＨ調整
剤を入れたタンクと、所定温度のｐＨ調整剤を一定量供
給する供給ポンプとを具備してなり、酸素を予め脱気手
段により除去した供給水中に、一定温度に保持されたｐ
Ｈ調整剤を供給ポンプにより供給し、供給水中の溶存酸
素及びｐＨを調整するので、供給水に任意のｐＨの調整
と共に所定量の酸素を同時に供給することができる。As described above, according to the first aspect of the present invention, as described above, a tank provided with a pH adjusting agent in a constant temperature bath and a pH adjusting agent at a predetermined temperature are fixed. And a supply pump for supplying a fixed amount of oxygen into the supply water from which oxygen has been removed in advance by degassing means.
Since the H adjuster is supplied by the supply pump and the dissolved oxygen and the pH in the supply water are adjusted, a predetermined amount of oxygen can be simultaneously supplied to the supply water together with the adjustment of an arbitrary pH.
【００２５】［請求項２］の発明によれば、請求項１に
おいて、上記ｐＨ調整剤を塩酸，硝酸，硫酸，酢酸，水
酸化ナトリウム，水酸化カリウム，アンモニア水とする
ことで任意のｐＨ調整が可能となる。According to the second aspect of the present invention, in the first aspect, the pH adjuster is selected from the group consisting of hydrochloric acid, nitric acid, sulfuric acid, acetic acid, sodium hydroxide, potassium hydroxide, and aqueous ammonia to adjust the pH. Becomes possible.
【００２６】［請求項３］の発明によれば、請求項１に
おいて、上記ｐＨ調整剤がアンモニア水であり、調整後
の供給水のｐＨが７．０〜９．３、溶存酸素濃度が２０
〜２００μｇ／リットルであるので、ＣＷＴ法の供給水
を模擬することができる。According to the third aspect of the present invention, in the first aspect, the pH adjuster is ammonia water, and the adjusted supply water has a pH of 7.0 to 9.3 and a dissolved oxygen concentration of 20.
Since it is ２００200 μg / liter, it is possible to simulate the feed water of the CWT method.
【００２７】［請求項４］の発明によれば、酸素を予め
脱気手段により除去した供給水中に、一定温度に保持さ
れたｐＨ調整剤を供給ポンプにより供給し、供給水中の
溶存酸素及びｐＨを調整するので、供給水に任意のｐＨ
の調整と共に所定量の酸素を同時に供給することができ
る。According to the fourth aspect of the present invention, the pH adjusting agent maintained at a constant temperature is supplied by the supply pump into the supply water from which oxygen has been previously removed by the degassing means, and the dissolved oxygen and the pH in the supply water are supplied. Adjust the pH of the feed water to any pH
And a predetermined amount of oxygen can be supplied simultaneously.
【００２８】［請求項５］の発明によれば、請求項４に
おいて、上記ｐＨ調整剤を塩酸，硝酸，硫酸，酢酸，水
酸化ナトリウム，水酸化カリウム，アンモニア水とする
ことで任意のｐＨ調整が可能となる。According to a fifth aspect of the present invention, in the fourth aspect, the pH adjusting agent is selected from the group consisting of hydrochloric acid, nitric acid, sulfuric acid, acetic acid, sodium hydroxide, potassium hydroxide, and ammonia water. Becomes possible.
【図１】本実施の形態にかかる溶存酸素濃度調整装置の
概略図である。FIG. 1 is a schematic diagram of a dissolved oxygen concentration adjusting device according to an embodiment.
【図２】アンモニア水の温度と溶存酸素濃度との関係図
である。FIG. 2 is a diagram showing the relationship between the temperature of ammonia water and the concentration of dissolved oxygen.
【図３】従来の溶存酸素濃度調整の概略図である。FIG. 3 is a schematic diagram of a conventional dissolved oxygen concentration adjustment.
１０ 恒温槽 １１ アンモニア水 １２ タンク １３ 供給ポンプ １４ 空気 ２０ 配管 ２１ 供給水 ２２ 供給水（ｐＨ調整、Ｏ2 濃度調整）Reference Signs List 10 constant temperature bath 11 ammonia water 12 tank 13 supply pump 14 air 20 pipe 21 supply water 22 supply water (pH adjustment, O 2 concentration adjustment)
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０２Ｆ 1/66 ５２１ Ｃ０２Ｆ 1/66 ５２１Ｆ ５４０ ５４０Ｚ Ｂ０１Ｆ 1/00 Ｂ０１Ｆ 1/00 Ａ // Ｃ０２Ｆ 1/00 Ｃ０２Ｆ 1/00 Ｋ ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) C02F 1/66 521 C02F 1/66 521F 540 540Z B01F 1/00 B01F 1/00 A // C02F 1/00 C02F 1/00 K
Claims (5)
れたタンクと、所定温度のｐＨ調整剤を一定量供給する
供給ポンプとを具備してなり、 酸素を予め脱気手段により除去した供給水中に、一定温
度に保持されたｐＨ調整剤を供給ポンプにより供給し、
供給水中の溶存酸素及びｐＨを調整することを特徴とす
る溶存酸素濃度調整装置。1. A constant temperature bath having a tank containing a pH adjuster therein and a supply pump for supplying a predetermined amount of the pH adjuster at a predetermined temperature, wherein oxygen is previously removed by a degassing means. In the supply water, a pH adjusting agent maintained at a constant temperature is supplied by a supply pump,
A dissolved oxygen concentration adjusting device for adjusting dissolved oxygen and pH in feed water.
リウム，水酸化カリウム，アンモニア水であることを特
徴とする溶存酸素濃度調整装置。2. The dissolved oxygen concentration adjusting device according to claim 1, wherein the pH adjusting agent is hydrochloric acid, nitric acid, sulfuric acid, acetic acid, sodium hydroxide, potassium hydroxide, or aqueous ammonia.
のｐＨが７．０〜９．３、溶存酸素濃度が２０〜２００
μｇ／リットルであることを特徴とする溶存酸素濃度調
整装置。3. The method according to claim 1, wherein the pH adjuster is ammonia water, the adjusted supply water has a pH of 7.0 to 9.3, and a dissolved oxygen concentration of 20 to 200.
A dissolved oxygen concentration adjusting device, wherein the concentration is μg / liter.
水中に、一定温度に保持されたｐＨ調整剤を供給ポンプ
により供給し、供給水中の溶存酸素及びｐＨを調整する
ことを特徴とする溶存酸素濃度調整方法。4. Dissolved water is supplied by supplying a pH adjusting agent maintained at a constant temperature to a supply water from which oxygen has been removed by a degassing means in advance by a supply pump, and adjusting dissolved oxygen and pH in the supply water. Oxygen concentration adjustment method.
リウム，水酸化カリウム，アンモニア水であることを特
徴とする溶存酸素濃度調整方法。5. The method according to claim 4, wherein the pH adjuster is hydrochloric acid, nitric acid, sulfuric acid, acetic acid, sodium hydroxide, potassium hydroxide, or aqueous ammonia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000286589A JP2002096076A (en) | 2000-09-21 | 2000-09-21 | Dissolved oxygen concentration regulating device and regulating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000286589A JP2002096076A (en) | 2000-09-21 | 2000-09-21 | Dissolved oxygen concentration regulating device and regulating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002096076A true JP2002096076A (en) | 2002-04-02 |
Family
ID=18770489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000286589A Withdrawn JP2002096076A (en) | 2000-09-21 | 2000-09-21 | Dissolved oxygen concentration regulating device and regulating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002096076A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893752A (en) * | 2016-10-03 | 2018-04-10 | 天津有序环境科技发展有限公司 | Transform the ammonification pump equal control method of existing system |
-
2000
- 2000-09-21 JP JP2000286589A patent/JP2002096076A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893752A (en) * | 2016-10-03 | 2018-04-10 | 天津有序环境科技发展有限公司 | Transform the ammonification pump equal control method of existing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20071204 |