JP2836821B2 - Method for removing dissolved oxygen from raw water used for beverages - Google Patents
Method for removing dissolved oxygen from raw water used for beveragesInfo
- Publication number
- JP2836821B2 JP2836821B2 JP63151660A JP15166088A JP2836821B2 JP 2836821 B2 JP2836821 B2 JP 2836821B2 JP 63151660 A JP63151660 A JP 63151660A JP 15166088 A JP15166088 A JP 15166088A JP 2836821 B2 JP2836821 B2 JP 2836821B2
- Authority
- JP
- Japan
- Prior art keywords
- dissolved oxygen
- nitrogen gas
- break tank
- oxygen concentration
- raw water
- 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 - Fee Related
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims description 54
- 239000001301 oxygen Substances 0.000 title claims description 54
- 229910052760 oxygen Inorganic materials 0.000 title claims description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 36
- 238000000034 method Methods 0.000 title claims description 12
- 235000013361 beverage Nutrition 0.000 title claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 31
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 31
- 150000002926 oxygen Chemical class 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000010419 fine particle Substances 0.000 claims description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 4
- 229910001882 dioxygen Inorganic materials 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 235000014214 soft drink Nutrition 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009489 vacuum treatment Methods 0.000 description 1
Landscapes
- Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Physical Water Treatments (AREA)
- Non-Alcoholic Beverages (AREA)
Description
【発明の詳細な説明】 発明の目的 一般にビール、清涼飲料等の飲料の製造に使用される
原料水や飲料の製造工程で使用される各種用水から細菌
による汚染と、酸化による製品の劣化を防止するため
に、無菌的、且つ、溶存酸素を充分除去したものである
ことが要求されている。DETAILED DESCRIPTION OF THE INVENTION Object of the Invention In general, prevention of bacterial contamination and deterioration of products due to oxidation from raw water used in the production of beverages such as beer and soft drinks and various types of water used in the production process of beverages In order to achieve this, it is required to be aseptic and sufficiently free of dissolved oxygen.
発明方法は、この要求を満たすために発明されたもの
であり、その目的は、飲料の原料水や飲料の製造工程で
使用される各種用水から充分に溶存酸素を除去し、且
つ、サニタリー性の高い溶存酸素除去を提供することで
ある。The invention method has been invented in order to satisfy this requirement, and its purpose is to sufficiently remove dissolved oxygen from raw water for beverages and various types of water used in the production process of beverages, and have a sanitary property. It is to provide high dissolved oxygen removal.
従来技術と従来技術における問題点 溶存酸素の除去方法として特公昭60−14633号記載の
方法が知られている。この溶存酸素除去方法において
は、被処理水を沸点以上に加熱することが必須条件であ
り、被処理水を100℃以上に加熱する加熱装置を必要と
し、また多量に加熱エネルギーを必要とする。Prior art and problems in the prior art As a method for removing dissolved oxygen, a method described in JP-B-60-14633 is known. In this dissolved oxygen removal method, it is an essential condition that the water to be treated is heated to a boiling point or higher, a heating device for heating the water to be treated to 100 ° C. or more is required, and a large amount of heating energy is required.
一方、通常の飲料では、加熱したままでは使用するこ
とができず、特に炭酸飲料においては、高温のままでは
炭酸化ができず、このため冷却工程が必要とされ、冷却
装置と冷却のためのエネルギーが必要とされる。On the other hand, ordinary beverages cannot be used while they are heated, and in particular, carbonated beverages cannot be carbonated at high temperatures, so a cooling step is required, and a cooling device and a cooling device are required. Energy is needed.
また、従来の溶存酸素除去装置として、特開昭62−29
4482号記載のものが知られている。この装置は、加熱処
理、真空処理、及び炭酸ガス置換により溶存酸素を除去
するもので、ある程度加熱された被処理水を真空容器内
に導入し一次脱気を行ないその後炭酸ガス注入装置で、
炭酸ガスと混合された被処理水をフラッシュタンク内に
噴出し、二次脱気を行ない被処理水中の溶存酸素を除去
するものである。Further, as a conventional dissolved oxygen removing apparatus, Japanese Patent Application Laid-Open No. 62-29
No. 4482 is known. This equipment removes dissolved oxygen by heat treatment, vacuum treatment, and carbon dioxide replacement, introduces water to be treated heated to some extent into a vacuum vessel, performs primary degassing, and then uses a carbon dioxide gas injection device.
The water to be treated mixed with carbon dioxide is jetted into the flash tank to perform secondary deaeration to remove dissolved oxygen in the water to be treated.
この方法によれば、処理後の被処理水の熱を回収する
熱交換器、スチーム加熱装置、真空容器等が必須であり
装置が複雑となる。特に真空部分では、真空を維持する
ために特殊な装置を必要とし、装置の一部にピンホール
等が発生すると逆に外部から空気を吸い込む等の危険性
がある。According to this method, a heat exchanger for recovering the heat of the water to be treated after the treatment, a steam heating device, a vacuum vessel, and the like are essential, and the device becomes complicated. Particularly in the vacuum part, a special device is required to maintain the vacuum, and when a pinhole or the like is generated in a part of the device, there is a danger that air is sucked in from the outside.
また、加熱するための加熱エネルギー、二次脱気用の
炭酸ガスを必要とする。Further, heating energy for heating and carbon dioxide gas for secondary deaeration are required.
発明の構成 本願発明は、 （ａ） 窒素ガス注入装置から清涼飲料等に使用される
原料水中に窒素ガスを微小気泡状で注入し、 （ｂ） 屈曲管、スタティックミキサー又はベンチュリ
ー管内で微小気泡状態の窒素ガスと前記原料水を接触さ
せ、 （ｃ） 窒素ガスと接触させた前記原料水を微細粒子状
態でブレイクタンクの窒素ガス雰囲気中に噴出させ、そ
して （ｄ） ブレイクタンク内に噴出させた前記原料水をブ
レイクタンクから取出し、ブレイクタンク内の窒素ガス
及びブレイクタンク内の酸素ガスはブレイクタンクから
外気に放出する ことを含む前記原料水から溶存酸素を除去する方法に関
する。Constitution of the Invention The present invention provides: (a) nitrogen gas in the form of microbubbles from a nitrogen gas injection device into raw water used for soft drinks and the like; and (b) microbubble state in a bent tube, a static mixer or a venturi tube. (C) The raw material water contacted with the nitrogen gas was spouted into the nitrogen gas atmosphere of the break tank in the form of fine particles, and (d) the spouted water was jetted into the break tank. The present invention relates to a method for removing dissolved oxygen from the raw water including removing the raw water from a break tank, and discharging nitrogen gas in the break tank and oxygen gas in the break tank to outside air from the break tank.
上記ブレイクタンク内酸素濃度を、溶存酸素除去後の
目標とする溶存酸素濃度に対する飽和酸素濃度以下とな
るように調節することが好ましい。It is preferable to adjust the oxygen concentration in the break tank so as to be equal to or lower than the saturated oxygen concentration with respect to the target dissolved oxygen concentration after removing dissolved oxygen.
被処理水中から、上記ブレイクタンク内に放出された
酸素ガスにより、ブレイクタンク内酸素濃度が特許請求
の範囲第２項又は第３項に記載される値に維持されるよ
うに、ブレイクタンク内に窒素ガスをパージすることを
特徴とする構成とする。The oxygen concentration in the break tank is maintained by the oxygen gas released from the water to be treated into the break tank so that the oxygen concentration in the break tank is maintained at the value described in claims 2 or 3. The structure is characterized by purging nitrogen gas.
発明の作用 本発明は、前記構成により、常温の処理水中に、窒素
ガス注入装置で窒素ガスを微小気泡状として注入し、配
管内で混合撹拌し、被処理水中の溶存酸素を窒素ガスの
微小気泡中に放出せしめた後、窒素ガス雰囲気を保持し
たブレイクタンク内へ被処理水を微細粒子状で噴出拡散
させ、被処理水中に残存する溶存酸素をブレイクタンク
内の窒素ガス雰囲気中に放出せしめることにより被処理
水中の溶存酸素を除去する。According to the present invention, nitrogen gas is injected into treated water at room temperature by a nitrogen gas injection device in the form of microbubbles, mixed and stirred in a pipe, and dissolved oxygen in the water to be treated is converted into minute nitrogen gas. After being released into the bubbles, the water to be treated is ejected and dispersed in fine particles into the break tank holding the nitrogen gas atmosphere, and the dissolved oxygen remaining in the water to be treated is released into the nitrogen gas atmosphere in the break tank. This removes dissolved oxygen in the water to be treated.
被処理水を上記ブレイクタンクへ噴出する際に、ブレ
イクタンク内酸素濃度が、溶存酸素除去後の目標とする
溶存酸素濃度に対する飽和酸素濃度以下でなければ溶存
酸素の除去は進行されないが、溶残酸素除去効率を上げ
るためには、ブレイクタンク内酸素濃度は、上記飽和酸
素濃度の50％以下とすることが望ましい。When the water to be treated is jetted into the break tank, the removal of dissolved oxygen does not proceed unless the oxygen concentration in the break tank is less than or equal to the saturated oxygen concentration relative to the target dissolved oxygen concentration after removing dissolved oxygen. To increase the oxygen removal efficiency, the oxygen concentration in the break tank is desirably 50% or less of the saturated oxygen concentration.
実 施 例 本発明に係る溶存酸素除去装置の実施例を図面に基づ
いて説明する。Embodiment An embodiment of a dissolved oxygen removing apparatus according to the present invention will be described with reference to the drawings.
第１図に、本発明による単段式の溶存酸素除去装置の
基本構成図を示す。第１図において、被処理水入口より
導入された被処理水は、ポンプ１により加圧され、バル
ブ２、窒素ガス注入装置３、屈曲管４及びスレーノズル
５を通してブレイクタンク６へ送られる。同時に、窒素
ガス注入装置３において窒素ガスが窒素ガス源（図示せ
ず）から、圧力調整弁７、流量調整弁８、及び逆止弁９
を備える配管10を通して微小気泡状で注入される。窒素
ガス注入装置３で被処理水と混合された窒素ガスの微小
気泡が大きくならないように屈曲管４中で、乱流を維持
することが必要である。第１図では、屈曲管４は複数個
の曲部をもつ構造を示したが、スタティックミキサー又
は、ベンチュリー管を用いても同様の効果が得られる。
屈曲管４中で、被処理水中の溶存酸素は、被処理水中か
ら、窒素ガスの微細気泡中へ放出される。FIG. 1 shows a basic configuration diagram of a single-stage dissolved oxygen removing apparatus according to the present invention. In FIG. 1, the water to be treated introduced from the inlet of the water to be treated is pressurized by a pump 1 and sent to a break tank 6 through a valve 2, a nitrogen gas injector 3, a bent pipe 4 and a sley nozzle 5. At the same time, in the nitrogen gas injection device 3, nitrogen gas is supplied from a nitrogen gas source (not shown) to a pressure control valve 7, a flow control valve 8, and a check valve 9.
Is injected in the form of microbubbles through a pipe 10 provided with It is necessary to maintain a turbulent flow in the bent tube 4 so that microbubbles of nitrogen gas mixed with the water to be treated in the nitrogen gas injection device 3 do not become large. In FIG. 1, the bent tube 4 has a structure having a plurality of curved portions, but the same effect can be obtained by using a static mixer or a Venturi tube.
In the bent tube 4, dissolved oxygen in the water to be treated is released from the water to be treated into fine bubbles of nitrogen gas.
次に、被処理水と窒素ガスの混合流体は、スプレー５
を通して、微細粒子状でブレイクタンク６内へ噴出さ
れ、急激な圧力低下と、被処理水が微細粒子状で窒素ガ
スに接触することにより、溶存酸素の放出が促進される
（この際、ブレイクタンク内圧力は、リリーフ弁11によ
り好ましくはほぼ大気圧に保たれる）。ブレイクタンク
内酸素濃度は、溶存酸素除去後の所望の溶存酸素濃度に
対する飽和酸素濃度以下としなければ溶存酸素の除去は
進行されないが、溶存酸素の除去効率を上げるために
は、上記飽和酸素濃度の50％以下とすることが望まし
い。上記ブレイクタンク内酸素濃度を、上記飽和酸素濃
度以下、あるいは、上記飽和酸素濃度の50％以下に維持
するために、窒素ガス源に連通され、圧力調整弁12及び
流量調整弁13等を備えるブレイクタンクパージ配管14を
介して、窒素ガスがブレイクタンク６内に供給される。
窒素ガス注入装置３及びブレイクタンクパージ配管14に
より供給された窒素ガスと、ブレイクタンク内に放出さ
れた酸素ガスはリリーフ弁11により外気に放出され、ブ
レイクタンク６内圧力はほぼ大気圧に保たれる。なお、
ブレイクタンク６内の液面は、液面制御器（図示せず）
により、ポンプ１及び制御弁２を制御することにより制
御される。Next, a mixed fluid of the water to be treated and nitrogen gas is sprayed.
Through which water is discharged into the break tank 6 in the form of fine particles, and abrupt pressure drop and contact of the treated water with the nitrogen gas in the form of fine particles promote the release of dissolved oxygen (at this time, the break tank The internal pressure is preferably kept at approximately atmospheric pressure by a relief valve 11). If the oxygen concentration in the break tank is not less than or equal to the saturated oxygen concentration relative to the desired dissolved oxygen concentration after removing the dissolved oxygen, the removal of dissolved oxygen will not proceed, but in order to increase the efficiency of removing dissolved oxygen, It is desirable to set it to 50% or less. In order to maintain the oxygen concentration in the break tank at or below the saturated oxygen concentration or at or below 50% of the saturated oxygen concentration, the break is connected to a nitrogen gas source and includes a pressure control valve 12, a flow control valve 13, and the like. Nitrogen gas is supplied into the break tank 6 via the tank purge pipe 14.
The nitrogen gas supplied by the nitrogen gas injection device 3 and the break tank purge pipe 14 and the oxygen gas released into the break tank are released to the outside air by the relief valve 11, and the pressure in the break tank 6 is maintained at approximately atmospheric pressure. It is. In addition,
The liquid level in the break tank 6 is controlled by a liquid level controller (not shown).
Is controlled by controlling the pump 1 and the control valve 2.
溶存酸素を除去された被処理水は、ポンプ15により次
の工程に送られる。The water to be treated from which dissolved oxygen has been removed is sent to the next step by the pump 15.
第１図には単段式の溶存酸素除去装置を示したが、所
望の処理後の溶存酸素濃度が低い場合には、複数段の溶
存酸素除去装置としてもよい。第２図に３段式の溶存酸
素除去装置を示す。FIG. 1 shows a single-stage dissolved oxygen remover, but if the dissolved oxygen concentration after the desired treatment is low, a multi-stage dissolved oxygen remover may be used. FIG. 2 shows a three-stage dissolved oxygen removing apparatus.
多段式の溶存酸素除去装置の場合は、基本的な溶存酸
素除去方法は前記単段式溶存酸素除去装置と同様である
が、ブレイクタンク内酸素濃度を所定濃度に維持するた
めに後段ブレイクタンクからの放出ガスを上記ブレイク
タンク内に導入することによりパージ用窒素ガスの使用
量を節約することができる。例えば、ブレイクタンク６
−ｂ中の酸素濃度を維持するために、ブレイクタンク６
−ｃの放出ガスをブレイクタンク６−ｂ中に導入する。
なお上記実施例では、後段ブレイクタンク放出ガスを前
段ブレイクタンクの気相部に導入したが、前段ブレイク
タンクの底部から微小気泡として噴出させてもよい。In the case of a multi-stage dissolved oxygen remover, the basic dissolved oxygen removing method is the same as that of the single-stage dissolved oxygen remover, but from the subsequent break tank to maintain the oxygen concentration in the break tank at a predetermined concentration. By introducing the released gas into the break tank, the amount of nitrogen gas used for purging can be saved. For example, break tank 6
-Break tank 6 to maintain oxygen concentration in b
-C is introduced into the break tank 6-b.
In the above embodiment, the gas discharged from the rear break tank is introduced into the gas phase of the front break tank. However, the gas may be ejected from the bottom of the front break tank as fine bubbles.
次に、本装置を用いた溶存酸素除去実験の結果を示し
ておく。Next, results of a dissolved oxygen removal experiment using the present apparatus will be described.
第１図は本発明の単段式の溶存酸素除去装置の概略図、
第２図は本発明の３段式の溶存酸素除去装置の概略図で
ある。FIG. 1 is a schematic diagram of a single-stage dissolved oxygen removing apparatus of the present invention,
FIG. 2 is a schematic view of a three-stage dissolved oxygen removing apparatus according to the present invention.
Claims (3)
ガス注入装置から窒素ガスを微小気泡状で注入し、 （ｂ） 屈曲管、スタティックミキサー又はベンチュリ
ー管内で微小気泡状態の窒素ガスと前記原料水を接触さ
せ、 （ｃ） 窒素ガスと接触させた前記原料水を微細粒子状
態でブレイクタンクの窒素ガス雰囲気中に噴出させ、そ
して （ｄ） ブレイクタンク内に噴出させた前記原料水をブ
レイクタンクから取出し、ブレイクタンク内の窒素ガス
及びブレイクタンク内の酸素ガスはブレイクタンクから
外気に放出する ことを含む前記原料水から溶存酸素を除去する方法。(1) Nitrogen gas is injected in the form of microbubbles from a nitrogen gas injection device into raw water used for a beverage; and (b) Nitrogen gas in a microbubble state in a bent tube, a static mixer or a Venturi tube. (C) jetting the raw water in contact with nitrogen gas in a fine particle state into a nitrogen gas atmosphere of a break tank; and (d) discharging the raw water jetted into the break tank. A method for removing dissolved oxygen from the raw water, comprising taking out from the break tank and releasing nitrogen gas and oxygen gas in the break tank to the outside air from the break tank.
素除去後の目標とする溶存酸素濃度に対する飽和酸素濃
度以下となるように調節することを特徴とする特許請求
の範囲第１項記載の方法。2. The method according to claim 1, wherein the oxygen concentration in the break tank is adjusted so as to be equal to or lower than a saturated oxygen concentration with respect to a target dissolved oxygen concentration after removing dissolved oxygen. .
素除去後の目標とする溶存酸素濃度に対する飽和酸素濃
度の50％以下となるように調節することを特徴とする特
許請求の範囲第１項記載の方法。3. The method according to claim 1, wherein the oxygen concentration in the break tank is adjusted to be 50% or less of a saturated oxygen concentration with respect to a target dissolved oxygen concentration after removing dissolved oxygen. The described method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63151660A JP2836821B2 (en) | 1988-06-20 | 1988-06-20 | Method for removing dissolved oxygen from raw water used for beverages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63151660A JP2836821B2 (en) | 1988-06-20 | 1988-06-20 | Method for removing dissolved oxygen from raw water used for beverages |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01317586A JPH01317586A (en) | 1989-12-22 |
| JP2836821B2 true JP2836821B2 (en) | 1998-12-14 |
Family
ID=15523433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63151660A Expired - Fee Related JP2836821B2 (en) | 1988-06-20 | 1988-06-20 | Method for removing dissolved oxygen from raw water used for beverages |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2836821B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4079236B2 (en) * | 1998-06-19 | 2008-04-23 | サッポロビール株式会社 | Production method and production process management method of malt alcoholic beverage |
| JP4296659B2 (en) * | 1999-11-09 | 2009-07-15 | 栗田工業株式会社 | Oxygen absorber |
| JP4820774B2 (en) * | 2007-04-20 | 2011-11-24 | 山陽電子工業株式会社 | Dissolved oxygen remover |
| JP2011230031A (en) * | 2010-04-26 | 2011-11-17 | Kurita Water Ind Ltd | Nitrogen substitution type deoxygenation device and nitrogen substitution type deoxygenation method |
| JP5923679B1 (en) * | 2015-01-26 | 2016-05-25 | 有限会社情報科学研究所 | Reduction fermentation method, reduction fermentation apparatus, oxidation reduction fermentation method, and oxidation reduction fermentation apparatus |
| JP7650625B2 (en) * | 2020-03-19 | 2025-03-25 | 株式会社レゾナック・ガスプロダクツ | Dissolved oxygen removal device and method |
| CN113719821B (en) * | 2021-08-31 | 2023-09-19 | 华北电力科学研究院有限责任公司 | A method and device for improving chemical cleaning and passivation effect |
| CN113772772B (en) * | 2021-08-31 | 2023-07-18 | 国网冀北电力有限公司电力科学研究院 | Dissolved oxygen removal device, cooling water system in converter valve and method for removing dissolved oxygen |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56121681A (en) * | 1980-02-29 | 1981-09-24 | Mitsubishi Heavy Ind Ltd | Treatment of open type softened cooling water |
| JPS58133885A (en) * | 1982-02-01 | 1983-08-09 | Toray Eng Co Ltd | Removing method of dissolved oxygen in liquid |
| JPS60183012A (en) * | 1984-03-01 | 1985-09-18 | Mitsubishi Heavy Ind Ltd | Steam converter apparatus |
| CH667866A5 (en) * | 1985-09-25 | 1988-11-15 | Ciba Geigy Ag | METHOD AND DEVICE FOR TREATING WATER. |
| JPH0785793B2 (en) * | 1986-07-07 | 1995-09-20 | オルガノ株式会社 | Device for removing dissolved oxygen in liquid |
-
1988
- 1988-06-20 JP JP63151660A patent/JP2836821B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01317586A (en) | 1989-12-22 |
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