JP5792533B2 - Gas dissolving apparatus and gas dissolving method - Google Patents
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- 238000000034 method Methods 0.000 title claims description 81
- 239000007788 liquid Substances 0.000 claims description 271
- 239000007789 gas Substances 0.000 claims description 163
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 77
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 57
- 238000002347 injection Methods 0.000 claims description 36
- 239000007924 injection Substances 0.000 claims description 36
- 238000000926 separation method Methods 0.000 claims description 22
- 230000006837 decompression Effects 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 17
- 230000003068 static effect Effects 0.000 claims description 11
- 238000005429 filling process Methods 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 5
- 238000011978 dissolution method Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 238000004090 dissolution Methods 0.000 description 8
- 238000005192 partition Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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- Accessories For Mixers (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Description
本発明は、液体に難溶解性の気体を溶解させるための気体溶解装置及び気体溶解方法に関する。 The present invention relates to a gas dissolving apparatus and a gas dissolving method for dissolving a hardly soluble gas in a liquid.
気体を液体中に溶解させる目的は様々であるが、食品・飲料等の分野においては、水に二酸化炭素を溶解させた炭酸飲料の生成が従前から広く実施されている。
水に対する気体の溶解量は、溶媒である水の温度が同一温度であれば溶質気体の圧力に比例し（ヘンリーの法則）、また溶媒である水の温度が低いほど溶解量は増加する。
従って、例えば水への溶解度が高い二酸化炭素(０℃の水１体積あたり１．７１３（1atｍ）)（岩波理化学辞典第３版第９７５頁）の場合は、密閉されたタンクまたは管路内において低温高圧下で液体と混合させることによって、容易に高濃度の炭酸水を得ることが可能であり、また、炭酸水からの二酸化炭素の放出も穏やかであるため、上記液体を送液する場合であっても、通常の管路によって送液が可能である。
There are various purposes for dissolving a gas in a liquid, but in the fields of foods and beverages, production of carbonated beverages in which carbon dioxide is dissolved in water has been widely practiced.
The dissolved amount of the gas in water is proportional to the pressure of the solute gas if the temperature of the solvent water is the same (Henry's law), and the dissolved amount increases as the temperature of the solvent water decreases.
Therefore, for example, in the case of carbon dioxide having a high solubility in water (1.713 (1 atm) per 1 volume of water at 0 ° C.) (Iwanami Rikagaku Dictionary 3rd edition, page 975), it is contained in a sealed tank or pipe. It is possible to easily obtain high-concentration carbonated water by mixing with liquid under low temperature and high pressure, and since the release of carbon dioxide from carbonated water is gentle, Even if it exists, liquid feeding is possible by a normal pipe line.
また、近年においては液体の酸化防止目的のために、液体を容器内に注入後封入前に、容器内の気体を窒素ガスで置換する方法がとられている。
しかしながら、液体を容器に充填する過程は通常の大気圧下で行われるため、容器内に存在する酸素による品質の劣化（酸化）を充分に防止できない、という不具合を有していた。
In recent years, for the purpose of preventing liquid oxidation, a method of replacing the gas in the container with nitrogen gas before the liquid is injected into the container and sealed is used.
However, since the process of filling the container with the liquid is performed under a normal atmospheric pressure, there is a problem that the deterioration (oxidation) of quality due to oxygen existing in the container cannot be sufficiently prevented.
上記の品質劣化を防止するため、液体に予め窒素ガスを溶解させておき、大気圧環境下若しくは密閉環境下において、充填対象容器に充填する方法が検討されている。 In order to prevent the above-described quality deterioration, a method of preliminarily dissolving nitrogen gas in a liquid and filling the container to be filled in an atmospheric pressure environment or a sealed environment has been studied.
しかしながら、窒素ガスは水に対して極めて溶けにくいという性質を有し、その溶解度は０℃の水１体積あたり０．０４９１（1atｍ）（岩波理化学辞典第３版第８３４頁）に留まることから、窒素ガスを水に溶解させる場合は、非常に高圧の環境、若しくは低温の環境が必要となる。
従って、現状においては、充填対象容器に窒素ガスを充填するため、液体充填と同時に液体窒素を数滴滴下して、即時に封入する方法が取られている。
上記方法の場合、液体窒素を滴下するための専用の構造が必要となるため、充填機の構造が複雑となり、従来の充填機をそのまま転用することができず、装置製造の製造コスト、維持コストが増大するという不具合を有していた。
また、低温の環境下で液体に窒素ガスを直接溶解させる方法の場合、容器に封入した液体を搬送する場合に、低温の液体によって容器の外表面が結露するという別途の不具合を有していた。
However, nitrogen gas has the property that it is extremely insoluble in water, and its solubility remains at 0.0491 (1 atm) per volume of water at 0 ° C. (Iwanami Rikagaku Dictionary 3rd Edition, page 834). When nitrogen gas is dissolved in water, an extremely high pressure environment or a low temperature environment is required.
Therefore, under the present circumstances, in order to fill a container to be filled with nitrogen gas, a method of dropping a few drops of liquid nitrogen simultaneously with liquid filling and immediately enclosing it is used.
In the case of the above method, since a dedicated structure for dropping liquid nitrogen is required, the structure of the filling machine becomes complicated, and the conventional filling machine cannot be diverted as it is, and the manufacturing cost and maintenance cost of manufacturing the device Had the problem of increasing.
In addition, in the case of a method in which nitrogen gas is directly dissolved in a liquid in a low temperature environment, when the liquid enclosed in the container is transported, there is another problem that the outer surface of the container is condensed by the low temperature liquid. .
また、高圧下で窒素ガスを溶解させた液体を充填する方法の場合は、窒素ガスが溶解した液体を充填工程等の次工程に送液する場合に、液体にかかっていた圧力を減圧する必要がある。
一般的に、気体を溶解させた後の液体の減圧は、次第に圧力を低く設定した複数のタンクを、バルブを介して接続し、上記バルブを介して順次低圧のタンクに上記液体を送液することよって、各タンクにおいて一括して減圧する、所謂段階除圧と呼ばれる方法が一般的であった。
しかしながら、上記のとおり、窒素ガスの溶解度が極めて低いことから、液体の送液時に、外部から衝撃が加えられた場合、上記液体から溶解した窒素ガスが放出される。
従って、上記の段階除圧の手法の場合、隣接するタンク間のバルブを通過する際に、バルブ前後の圧力差によって、上記液体に大きな衝撃がかかることから、窒素ガスが溶解した液体の除圧方法としては適切ではない、という不具合を有していた。
Also, in the case of filling a liquid in which nitrogen gas is dissolved under high pressure, it is necessary to reduce the pressure applied to the liquid when the liquid in which nitrogen gas is dissolved is sent to the next process such as a filling process. There is.
In general, in order to reduce the pressure of the liquid after dissolving the gas, a plurality of tanks whose pressures are gradually set low are connected via a valve, and the liquid is sequentially sent to the low-pressure tank via the valve. Therefore, a method called so-called step pressure reduction, in which the pressure is collectively reduced in each tank, has been common.
However, as described above, since the solubility of nitrogen gas is extremely low, when an impact is applied from the outside during liquid feeding, the dissolved nitrogen gas is released from the liquid.
Therefore, in the case of the above-described step pressure reduction method, when passing through a valve between adjacent tanks, a large impact is applied to the liquid due to the pressure difference before and after the valve. There was a problem that it was not appropriate as a method.
本発明の解決する課題は、難溶解性気体であっても、常温下の環境において効率的液体中に溶解させることが可能であると共に、上記気体が溶解された液体を、溶解された気体の放出を最小限に抑制しつつ、次工程に搬送することが可能な気体溶解装置及び気体溶解方法を提供することにある。
また、本発明の別途の課題は、従来の充填機構造を変更せず、また液化窒素の滴下することなく、容器の内圧を高めることが可能な気体溶解装置、及び難溶解性気体が溶解された液体の容器封入方法を提供することにある。
The problem to be solved by the present invention is that even a hardly soluble gas can be dissolved in an efficient liquid in an environment at room temperature, and the liquid in which the gas is dissolved is dissolved in the dissolved gas. An object of the present invention is to provide a gas dissolution apparatus and a gas dissolution method that can be transported to the next step while suppressing the release to a minimum.
Further, another problem of the present invention is that a gas dissolving device capable of increasing the internal pressure of a container and a hardly soluble gas are dissolved without changing the conventional filling machine structure and without dripping liquefied nitrogen. Another object of the present invention is to provide a method for enclosing a liquid container.
上記課題を解決するために、請求項１の気体溶解装置にあっては、難溶解性気体を液体に溶解させる気体溶解装置であって、所定圧に加圧された気体を注入する気体注入部と、
所定圧に加圧された液体を注入する液体注入部と、 上記気体注入部及び上記液体注入部に接続されると共に、注入された上記気体と液体とを混合して溶解させる気液混合溶解器、及び上記気体が溶解した液体を注入時の圧力よりも低い所定圧まで減圧させる背圧バルブとを有する気液混合溶解部と、上記気液混合溶解部に接続されると共に、注入時の圧力よりも低い所定圧に加圧され、上記気体が溶解した液体と、上記気液混合溶解部おいて溶解しなかった気体とを、所定時間貯蔵して分離する気液分離部と、上記気液分離部に接続され、所定長及び所定径寸法を有し、上記気体が溶解された液体を減圧する減圧管路部とを有し、 上記減圧管路部は次工程設備側に向かって次第に太径となる接続管路部を介して、次工程設備に接続されており、上記次工程設備は、上記気体が溶解した液体を容器に充填する液体充填部と、上記液体充填部において上記液体を封入した容器を封止する容器封止部とを備えることを特徴とする。
In order to solve the above-described problem, the gas dissolving apparatus according to claim 1 is a gas dissolving apparatus that dissolves a hardly soluble gas into a liquid, and injects a gas pressurized to a predetermined pressure. When,
A liquid injection unit for injecting a liquid pressurized to a predetermined pressure; and a gas-liquid mixing dissolver connected to the gas injection unit and the liquid injection unit and mixing and injecting the injected gas and liquid And a gas-liquid mixing and dissolving part having a back pressure valve for reducing the gas-dissolved liquid to a predetermined pressure lower than the pressure at the time of injection, and a pressure at the time of injection connected to the gas-liquid mixing and dissolving part A gas-liquid separation part that stores the liquid for which the gas is dissolved and the gas that has not been dissolved in the gas-liquid mixing and dissolution part for a predetermined period of time and separated; and the gas-liquid A depressurization pipe section that is connected to the separation section and has a predetermined length and a predetermined diameter and depressurizes the liquid in which the gas is dissolved, and the depressurization pipe section gradually increases toward the next process equipment side. It is connected to the next process equipment via the connecting pipe line that becomes the diameter. The next process facility includes a liquid filling unit that fills a container with the liquid in which the gas is dissolved, and a container sealing unit that seals the container in which the liquid is sealed in the liquid filling unit. .
従って、上記気液分離部において分離され、上記気体が溶解した液体は、上記減圧管路部内を送液される過程において、上記減圧管路内壁との摩擦抵抗による圧力損失が発生することによって送液過程において連続的に減圧される。
、現状においては、充填対象容器に窒素ガスを充填するため、液体充填と同時に液体窒素を数滴滴下して、即時に封入する方法が取られている。
上記方法の場合、液体窒素を滴下するための専用の構造が必要となるため、充填機の構造が複雑となり、従来の充填機をそのまま転用することができず、装置製造の製造コスト、維持コストが増大するという不具合を有していた。
また、低温の環境下で液体に窒素ガスを直接溶解させる方法の場合、容器に封入した液体を搬送する場合に、低温の液体によって容器の外表面が結露するという別途の不具合を有していた。
Therefore, the liquid which is separated in the gas-liquid separation part and in which the gas is dissolved is sent due to pressure loss due to frictional resistance with the inner wall of the pressure-reducing pipe line in the process of being sent through the pressure-reducing pipe part. The pressure is continuously reduced in the liquid process.
In the present situation, in order to fill a filling target container with nitrogen gas, a method of dropping a few drops of liquid nitrogen simultaneously with liquid filling and immediately enclosing it is used.
In the case of the above method, since a dedicated structure for dropping liquid nitrogen is required, the structure of the filling machine becomes complicated, and the conventional filling machine cannot be diverted as it is, and the manufacturing cost and maintenance cost of manufacturing the device Had the problem of increasing.
In addition, in the case of a method in which nitrogen gas is directly dissolved in a liquid in a low temperature environment, when the liquid enclosed in the container is transported, there is another problem that the outer surface of the container is condensed by the low temperature liquid. .
また、高圧下で窒素ガスを溶解させた液体を充填する方法の場合は、窒素ガスが溶解した液体を充填工程等の次工程に送液する場合に、液体にかかっていた圧力を減圧する必要がある。
一般的に、気体を溶解させた後の液体の減圧は、次第に圧力を低く設定した複数のタンクを、バルブを介して接続し、上記バルブを介して順次低圧のタンクに上記液体を送液することよって、各タンクにおいて一括して減圧する、所謂段階除圧と呼ばれる方法が一般的であった。
しかしながら、上記のとおり、窒素ガスの溶解度が極めて低いことから、液体の送液時に、外部から衝撃が加えられた場合、上記液体から溶解した窒素ガスが放出される。
従って、上記の段階除圧の手法の場合、隣接するタンク間のバルブを通過する際に、バルブ前後の圧力差によって、上記液体に大きな衝撃がかかることから、窒素ガスが溶解した液体の除圧方法としては適切ではない、という不具合を有していた。
Also, in the case of filling a liquid in which nitrogen gas is dissolved under high pressure, it is necessary to reduce the pressure applied to the liquid when the liquid in which nitrogen gas is dissolved is sent to the next process such as a filling process. There is.
In general, in order to reduce the pressure of the liquid after dissolving the gas, a plurality of tanks whose pressures are gradually set low are connected via a valve, and the liquid is sequentially sent to the low-pressure tank via the valve. Therefore, a method called so-called step pressure reduction, in which the pressure is collectively reduced in each tank, has been common.
However, as described above, since the solubility of nitrogen gas is extremely low, when an impact is applied from the outside during liquid feeding, the dissolved nitrogen gas is released from the liquid.
Therefore, in the case of the above-described step pressure reduction method, when passing through a valve between adjacent tanks, a large impact is applied to the liquid due to the pressure difference before and after the valve. There was a problem that it was not appropriate as a method.
また、請求項２の気体溶解装置にあっては、上記気液混合溶解器は上記気体注入部及び上記液体注入部に接続された静止型混合器からなり、上記静止型混合器は背圧バルブを介して上記気液分離部に接続されていることを特徴とする。 Further, in the gas dissolving apparatus according to claim 2, the gas-liquid mixing dissolver comprises the gas injection part and a static mixer connected to the liquid injection part, and the static mixer is a back pressure valve. It connects to the said gas-liquid separation part through this.
従って、上記気液分離部の圧力を一定に保持すると共に、上記背圧バルブの挟所を上記気体と混合された液体が通過することにより、上記気液混合溶解部において混合された気体と液体との接触度を高め、更に上記気体の溶解が促進される。 Therefore, the gas and liquid mixed in the gas-liquid mixing and dissolving unit are maintained by keeping the pressure of the gas-liquid separating unit constant and passing the liquid mixed with the gas through the back pressure valve. And the dissolution of the gas is further promoted.
また、請求項３の気体溶解装置にあっては、上記気液分離部は所定容積を有する加圧タンクであり、上記加圧タンクには、内部の気体圧力が所定圧以上となった場合に上記気体を排出する圧力調整弁部が設けられていることを特徴とする。
従って、上記気液分離部において、常に上記気体の溶解度が一定に保たれる。
Further, in the gas dissolving apparatus according to claim 3, the gas-liquid separation part is a pressurized tank having a predetermined volume, and when the internal gas pressure becomes a predetermined pressure or more, A pressure adjusting valve for discharging the gas is provided.
Therefore, the solubility of the gas is always kept constant in the gas-liquid separation unit.
また、請求項４の気体溶解装置にあっては、上記気液分離部と減圧管路部とは気体溶解液の流量を調整しうる流量調整バルブを介して接続されていることを特徴とする。
従って、上記減圧管路部に上記液体が流入する際の流量を、上記液体に対して与えられる衝撃を抑制することが可能な最適な値に調整することができる。
Further, in the gas dissolving apparatus according to claim 4, the gas-liquid separation part and the pressure reducing line part are connected via a flow rate adjusting valve capable of adjusting a flow rate of the gas dissolving liquid. .
Therefore, it is possible to adjust the flow rate when the liquid flows into the pressure reducing pipe section to an optimum value that can suppress the impact applied to the liquid.
また請求項５の気体溶解装置にあっては、上記減圧管路部の管路の径寸法は１５０ｍｍ以下であることを特徴とする。
また、請求項６の気体溶解装置にあっては、上記減圧管路部の管路の長さ寸法は１０ｍｍ以上であることを特徴とする。
上記減圧管路における圧力損失がより大きくなる。
In the gas dissolving apparatus according to the fifth aspect, the diameter of the conduit of the decompression conduit is 150 mm or less.
In the gas dissolving apparatus according to claim 6, the length dimension of the pipe line of the pressure reducing pipe part is 10 mm or more.
The pressure loss in the pressure reducing pipe becomes larger.
また、請求項８の気体溶解装置にあっては、上記気体は窒素ガスであることを特徴とする。 Moreover, in the gas dissolving apparatus of Claim 8, the said gas is nitrogen gas, It is characterized by the above-mentioned.
また、請求項１０記載の気体溶解方法にあっては、難溶解性気体を液中に溶解させる気体溶解方法であって、所定圧に加圧されて注入された気体を微細化し、所定圧に加圧されて注入された液体と混合し、上記気体を上記液体に溶解させ、背圧バルブによって所定圧に減圧して流出させる気液混合溶解工程と、上記気液混合溶解工程の後、流入した気体溶解液を、内部圧を所定圧に保持しながら所定時間貯蔵し、上記気体が溶解された液体と、上記液体に溶解されずに残存した気体とを分離する気液分離工程と、上記気液分離工程の後、上記液体を、所定の流量で、所定長及び所定径寸法を有する減圧管路部内に流通させることによる圧力損失によって上記液体の圧力を減圧する減圧工程と、上記減圧工程によって減圧された上記液体を次第に減圧しつつ、次第に口径が拡大する接続管路部を経由して次工程に搬送する搬送工程とを備えることを特徴とする。 The gas dissolving method according to claim 10 is a gas dissolving method in which a hardly soluble gas is dissolved in a liquid, wherein the gas injected by being pressurized to a predetermined pressure is refined to a predetermined pressure. Mixing with the liquid injected under pressure, dissolving the gas in the liquid, reducing the pressure to a predetermined pressure with a back pressure valve and flowing out, and after the gas-liquid mixing and dissolving step, the inflow The gas-dissolved step of storing the gas-dissolved liquid for a predetermined time while maintaining the internal pressure at a predetermined pressure, and separating the liquid in which the gas is dissolved from the gas that remains without being dissolved in the liquid; and After the gas-liquid separation step, the liquid is depressurized by reducing the pressure of the liquid by pressure loss caused by flowing the liquid at a predetermined flow rate through a pressure reducing pipe portion having a predetermined length and a predetermined diameter, and the pressure reducing step. The liquid decompressed by While reduced pressure gradually through the connecting conduit section diameter is expanded, characterized in that it comprises a conveying step of conveying to the next step.
従って、気体が溶解した液体に対して衝撃を与えることを防止すると共に、上記液体を送液する過程における圧力損失を利用して上記液体の減圧を連続的に行うことが可能となる。 Therefore, it is possible to prevent the liquid in which the gas is dissolved and continuously reduce the pressure of the liquid by using the pressure loss in the process of feeding the liquid.
また、請求項１１の気体溶解方法にあっては、上記気体は窒素ガスであることを特徴とする。 The gas dissolving method according to claim 11 is characterized in that the gas is nitrogen gas.
また、請求項１２の気体溶解液体の容器封入方法にあっては、請求項１０または１１いずれか１項に示す方法により気体が溶解された液体を容器に充填する充填工程と、液体充填後に上記容器を封止する封止工程とを有することを特徴とする。 Further, in the container-sealing method of the gas-dissolved liquid according to claim 12, the filling step of filling the container with the liquid in which the gas is dissolved by the method according to claim 10 or 11, and the above after the liquid filling And a sealing step for sealing the container.
従って、容器内に液体を充填する場合に、別途液体窒素を液中に滴下する必要は無く、従来の充填装置を用いて、容器中に上記気体が溶解された液体を充填し、容器を封止することができる。 Therefore, when filling the container with liquid, it is not necessary to add liquid nitrogen separately to the liquid, and the container is filled with the liquid in which the gas is dissolved using a conventional filling device. Can be stopped.
請求項１に記載の発明にあっては、請求項１の気体溶解装置にあっては、請求項１の気体溶解装置にあっては、所定圧に加圧された気体を注入する気体注入部と、所定圧に加圧された液体を注入する液体注入部と、上記気体注入部及び上記液体注入部に接続されると共に、注入された上記気体と液体とを混合して溶解させる気液混合溶解器、及び上記気体が溶解した液体を注入時の圧力よりも低い所定圧まで減圧させる背圧バルブとを有する気液混合溶解部と、上記気液混合溶解部に接続されると共に、注入時の圧力よりも低い所定圧に加圧され、上記気体が溶解した液体と、上記気液混合溶解部おいて溶解しなかった気体とを、所定時間貯蔵して分離する気液分離部と、上記気液分離部に接続され、所定長及び所定径寸法を有し、上記気体が溶解された液体を減圧する減圧管路部とを有することから、難溶解性気体の場合であっても、常温下の環境において効率的に液体中に溶解させると共に、上記気体が溶解された液体を、溶解された気体の放出を最小限に抑制しつつ、次工程に搬送することが可能な気体溶解装置及び気体溶解方法を提供することができる。 In the first aspect of the present invention, in the gas dissolving apparatus of the first aspect, in the gas dissolving apparatus of the first aspect, a gas injection portion for injecting a gas pressurized to a predetermined pressure. And a liquid injection part for injecting a liquid pressurized to a predetermined pressure, and a gas-liquid mixing for mixing and dissolving the injected gas and liquid while being connected to the gas injection part and the liquid injection part A gas-liquid mixing / dissolving unit having a dissolver and a back pressure valve for depressurizing the liquid in which the gas is dissolved to a predetermined pressure lower than the pressure at the time of injection, and being connected to the gas-liquid mixing / dissolving unit and A gas-liquid separation unit that is pressurized to a predetermined pressure lower than the pressure of the gas and that dissolves the gas and a gas that has not been dissolved in the gas-liquid mixing and dissolving unit and stores and separates the gas for a predetermined time; and Connected to the gas-liquid separator, having a predetermined length and a predetermined diameter, the gas And a decompression pipe section for decompressing the dissolved liquid, so that even in the case of a hardly soluble gas, it is efficiently dissolved in the liquid in an environment at room temperature, and the liquid in which the gas is dissolved Thus, it is possible to provide a gas dissolving apparatus and a gas dissolving method that can be transported to the next process while minimizing the release of dissolved gas.
また、上記減圧管路部は次工程設備に向かって次第に太径となる接続管路を介して、次工程設備に接続されていることから、上記次工程設備への送液過程において、液体中に溶解した気体が放出されることを防止可能な気体溶解装置を提供することが可能となる。In addition, since the pressure reducing pipe section is connected to the next process equipment through a connecting pipe that gradually increases in diameter toward the next process equipment, in the liquid feeding process to the next process equipment, It is possible to provide a gas dissolving device capable of preventing the gas dissolved in the gas from being released.
また、上記減圧管路部に接続され、上記気体が溶解した液体を容器に封入する液体充填部と、上記液体充填部において上記液体を封入した容器を封止する容器封止部とからなることから、従来の充填機構造を変更せず、また液化窒素の滴下することなく、上記気体が溶解した液体を容器に封入するとともに上記容器の内圧を高めることができる。Further, the liquid filling unit is connected to the decompression pipe unit and encloses the liquid in which the gas is dissolved in a container, and the container sealing unit seals the container enclosing the liquid in the liquid filling unit. Therefore, the liquid in which the gas is dissolved can be sealed in the container and the internal pressure of the container can be increased without changing the conventional filling machine structure and without dripping liquefied nitrogen.
また、請求項２の気体溶解装置にあっては、上記気液混合溶解器は上記気体注入部及び上記液体注入部に接続された静止型混合器からなり、上記静止型混合器は上記背圧バルブを介して上記気液分離部に接続されていることから、請求項１の効果に加え、上記気液分離部の圧力が変化した場合であっても最適な流出圧力に柔軟に対応することが可能であると共に、気液分離部以下の各部を洗浄する場合は、上記背圧バルブを全開放することによって容易に洗浄を実施することが可能となるため、衛生性に優れた気体溶解装置を提供することができる。 Further, in the gas dissolving device according to claim 2, the gas-liquid mixing dissolver includes the gas injection part and a static mixer connected to the liquid injection part, and the static mixer is the back pressure. Since it is connected to the gas-liquid separator through a valve, in addition to the effect of claim 1, it can flexibly cope with the optimum outflow pressure even when the pressure of the gas-liquid separator changes. In addition, when cleaning each part below the gas-liquid separator, it is possible to easily perform the cleaning by fully opening the back pressure valve. Can be provided.
また、請求項３の発明にあっては、上記気液分離部は所定容積を有する加圧タンクであり、上記加圧タンクには、内部の気体圧力が所定圧以上となった場合に上記気体を排出する圧力調整弁部が設けられていることから、
従って、請求項１及び２の効果に加え、上記気体の溶解度を最適な状態に保持することが可能な気体溶解装置を提供することができる。
According to a third aspect of the present invention, the gas-liquid separation unit is a pressurized tank having a predetermined volume, and the pressurized tank contains the gas when an internal gas pressure exceeds a predetermined pressure. Because the pressure adjustment valve part that discharges
Therefore, in addition to the effects of claims 1 and 2, it is possible to provide a gas dissolving apparatus capable of maintaining the solubility of the gas in an optimum state.
また、請求項４の発明あっては、上記気液分離部と減圧管路部とは気体溶解液の流量を調整しうる流量調整バルブを介して接続されていることを特徴とする。 The invention according to claim 4 is characterized in that the gas-liquid separation part and the pressure reducing line part are connected via a flow rate adjusting valve capable of adjusting the flow rate of the gas solution.
従って、上記減圧管路部に液体を流出させる場合の流量を、上記液体に対する衝撃を抑制しうる最適な流量に適宜調整することが可能となることから、上記減圧管路部に流出する際に、溶解した気体が放出され難い気体溶解装置を提供することができる。 Accordingly, since the flow rate when the liquid flows out to the pressure reducing pipe portion can be appropriately adjusted to an optimum flow rate capable of suppressing the impact on the liquid, when flowing out to the pressure reducing pipe portion, It is possible to provide a gas dissolving apparatus in which dissolved gas is hardly released.
また請求項５の発明にあっては、上記減圧管路部の管路の径寸法は１５０ｍｍ以下であり、また、請求項６の発明にあっては、上記減圧管路部の管路の長さ寸法は１０ｍｍ以上であることを特徴とする。 In the invention of claim 5, the diameter of the conduit of the decompression conduit is 150 mm or less. In the invention of claim 6, the length of the conduit of the decompression conduit The size is 10 mm or more.
従って、上記減圧管路部の径寸法が通常の送液用管路の径寸法よりも細径、若しくは管路の長さ寸法が長くなるほど、上記減圧管路部内壁と送液される液体との摩擦抵抗力による圧力損失が大きくなり、上記液体の有する圧力が連続的に且つより効率的に減圧されるため、溶解した気体の放出を抑制しながら、効率的に上記液体の減圧を行うことが可能な気体溶解装置を提供することができる。 Accordingly, the diameter of the pressure reducing pipe section is smaller than the diameter of the normal liquid sending pipe, or the longer the length of the pipe, the more the liquid to be fed to the inner wall of the pressure reducing pipe section. The pressure loss due to the frictional resistance of the liquid increases, and the pressure of the liquid is continuously and more efficiently reduced. Therefore, the liquid is efficiently reduced while suppressing the release of dissolved gas. It is possible to provide a gas dissolving apparatus capable of performing the above.
また、請求項８記載の発明にあっては、上記気体は窒素ガスであることから、液体に窒素ガスを溶解させることが可能となる。 In the invention according to claim 8, since the gas is nitrogen gas, the nitrogen gas can be dissolved in the liquid.
従って、次工程設備において液体を容器に充填する場合、別途窒素ガスを充填する工程が不要となり、窒素ガスの充填工程における液体の品質の劣化を防止することが可能となる。 Accordingly, when the container is filled with the liquid in the next process equipment, a process of filling nitrogen gas becomes unnecessary, and it is possible to prevent deterioration of the quality of the liquid in the nitrogen gas filling process.
また、請求項１０記載の気体溶解方法にあっては、難溶解性気体を液中に溶解させる気体溶解方法であって、所定圧に加圧されて注入された気体を微細化し、所定圧に加圧されて注入された液体と混合し、上記気体を上記液体に溶解させ、背圧バルブによって所定圧に減圧して流出させる気液混合溶解工程と、上記気液混合溶解工程の後、流入した気体溶解液を、内部圧を所定圧に保持しながら所定時間貯蔵し、上記気体が溶解された液体と、上記液体に溶解されずに残存した気体とを分離する気液分離工程と、上記気液分離工程の後、上記液体を、所定の流量で、所定長及び所定径寸法を有する減圧管路部内に流通させることによる圧力損失によって上記液体の圧力を減圧する減圧工程と、上記減圧工程によって減圧された上記液体を次第に減圧しつつ、次第に口径が拡大する接続管路部を経由して次工程に搬送する搬送工程とを備えることから、難溶解性気体が溶解された液体を、溶解された気体の放出を最小限に抑制しつつ、効率的に減圧すると共に、次工程に搬送することが可能な気体溶解方法を提供することが可能となる。 The gas dissolving method according to claim 10 is a gas dissolving method in which a hardly soluble gas is dissolved in a liquid, wherein the gas injected by being pressurized to a predetermined pressure is refined to a predetermined pressure. Mixing with the liquid injected under pressure, dissolving the gas in the liquid, reducing the pressure to a predetermined pressure with a back pressure valve and flowing out, and after the gas-liquid mixing and dissolving step, the inflow The gas-dissolved step of storing the gas-dissolved liquid for a predetermined time while maintaining the internal pressure at a predetermined pressure, and separating the liquid in which the gas is dissolved from the gas that remains without being dissolved in the liquid; and After the gas-liquid separation step, the liquid is depressurized by reducing the pressure of the liquid by pressure loss caused by flowing the liquid at a predetermined flow rate through a pressure reducing pipe portion having a predetermined length and a predetermined diameter, and the pressure reducing step. The liquid decompressed by And a transporting process for transporting to the next process via a connecting pipe line part that gradually increases in diameter while reducing the pressure, so that a liquid in which a hardly soluble gas is dissolved is minimized in releasing the dissolved gas. It is possible to provide a gas dissolving method capable of efficiently reducing the pressure while suppressing the pressure and transporting to the next step.
また、請求項１１の気体溶解方法にあっては、上記気体は窒素ガスであることから、液体に窒素ガスを溶解させることが可能となる。 In the gas dissolving method according to the eleventh aspect, since the gas is nitrogen gas, the nitrogen gas can be dissolved in the liquid.
従って、次工程設備において液体を容器に充填する場合、別途窒素ガスを充填する工程が不要となり、窒素ガスの充填工程における液体の品質の劣化を防止することが可能となる。 Accordingly, when the container is filled with the liquid in the next process equipment, a process of filling nitrogen gas becomes unnecessary, and it is possible to prevent deterioration of the quality of the liquid in the nitrogen gas filling process.
また、請求項１２の気体溶解液体の容器封入方法にあっては、請求項１０又は１１いずれか１項に示す方法により気体が溶解された液体を容器に充填する充填工程と、液体充填後に上記容器を封止する封止工程とを有することから、従来の充填機構造を変更せず、また液化窒素の滴下することなく、容器の内圧を高めることが可能な、難溶解性気体が溶解された液体の容器封入方法を提供することができる。 Further, in the container-sealing method of the gas-dissolved liquid according to claim 12, the filling step of filling the container with the liquid in which the gas is dissolved by the method according to claim 10 or 11, and the above-mentioned after the liquid filling Since it has a sealing step for sealing the container, a hardly soluble gas that can increase the internal pressure of the container without changing the structure of the conventional filling machine and without dripping liquefied nitrogen is dissolved. A method for enclosing a liquid container can be provided.
以下、添付図面に示す実施の形態に基づき本発明に係る気体溶解装置を説明する。 Hereinafter, a gas dissolving apparatus according to the present invention will be described based on an embodiment shown in the accompanying drawings.
図１に示すように、本実施例に係る気体溶解装置１０は、所定圧に加圧された窒素ガスである気体を注入する気体注入部１１と、所定圧に加圧された液体を注入する液体注入部１２と、上記気体注入部１１及び上記液体注入部１２に接続されると共に、注入された窒素ガスと液体とを混合して溶解させる気液混合溶解器１３、１３と、上記気液混合溶解器１３、１３で上記窒素ガスが溶解した液体を注入時の圧力よりも低い所定圧まで減圧させる背圧バルブ１８とからなる気液混合溶解部１４と、上記気液混合溶解部１４に接続されると共に、注入時の圧力よりも低い所定圧に加圧され、上記窒素ガスが溶解した液体と上記気液混合溶解部１４おいて溶解しなかった窒素ガスとを、所定時間貯蔵して分離する気液分離部１５と、上記気液分離部１５に接続され、所定長及び所定径寸法を有し、上記窒素ガスが溶解された液体を減圧する減圧管路部１６とを有している。
また、上記気液混合溶解器１３、１３は上記気体注入部１１及び上記液体注入部１２に接続された静止型混合器１７ａ、１７ｂからなり、上記静止型混合器４ｂは背圧バルブ１８を介して上記気液分離部１５に接続されている。上記気液分離部１５は所定容積を有する加圧タンク１９であり、上記加圧タンク１９には、内部の窒素ガス圧力が所定圧以上となった場合に、上記窒素ガスを外部に排出する圧力調整弁部２０が設けられている。
また、上記気液分離部１５と減圧管路部１６とは上記気体溶解液の流量を調整しうる流量調整バルブ２１を介して接続されている。
また上記減圧管路部１６の管路の径寸法は１４ｍｍであり、管路の長さ寸法は２０，０００ｍｍに形成されている。
また、上記減圧管路部１６は次工程設備タンク２４側に向かって次第に太径となる接続管路部２３を介して、次工程設備用タンク２４に接続されている。
また、上記次工程設備用タンク２４には、上記気体溶解液をペットボトル２９ａに充填する液体充填部２７が接続され、更に上記液体充填部２７には、上記液体充填部２７によって液体が充填されたペットボトル２９ａを封止する、容器封止部２８が接続されている。
As shown in FIG. 1, a gas dissolving apparatus 10 according to the present embodiment injects a gas injection unit 11 that injects a gas that is nitrogen gas pressurized to a predetermined pressure, and injects a liquid that is pressurized to a predetermined pressure. The liquid injection unit 12, the gas injection unit 11 and the liquid injection unit 12, and gas-liquid mixing dissolvers 13 and 13 for mixing and dissolving the injected nitrogen gas and liquid, and the gas-liquid A gas-liquid mixing / dissolving unit 14 comprising a back pressure valve 18 for reducing the liquid in which the nitrogen gas is dissolved in the mixing dissolvers 13, 13 to a predetermined pressure lower than the pressure at the time of injection, and the gas-liquid mixing / dissolving unit 14 In addition to being connected, pressurized to a predetermined pressure lower than the pressure at the time of injection, the liquid in which the nitrogen gas is dissolved and the nitrogen gas that has not been dissolved in the gas-liquid mixing and dissolving unit 14 are stored for a predetermined time. Gas-liquid separation unit 15 to be separated and the gas-liquid separation Is connected to 15, having a predetermined length and a predetermined diameter, and a vacuum conduit 16 to depressurize the nitrogen gas is dissolved liquid.
The gas-liquid mixing dissolvers 13 and 13 are composed of static mixers 17a and 17b connected to the gas injection part 11 and the liquid injection part 12, and the static mixer 4b is connected via a back pressure valve 18. Connected to the gas-liquid separator 15. The gas-liquid separation unit 15 is a pressurized tank 19 having a predetermined volume, and the pressurized tank 19 has a pressure for discharging the nitrogen gas to the outside when the internal nitrogen gas pressure exceeds a predetermined pressure. An adjustment valve unit 20 is provided.
The gas-liquid separator 15 and the pressure reducing line 16 are connected via a flow rate adjusting valve 21 that can adjust the flow rate of the gas solution.
Further, the diameter of the conduit of the decompression conduit 16 is 14 mm, and the length of the conduit is 20,000 mm.
Further, the decompression pipe section 16 is connected to the next process equipment tank 24 via a connection pipe section 23 that gradually increases in diameter toward the next process equipment tank 24 side.
The next process equipment tank 24 is connected to a liquid filling part 27 for filling the gas bottle with the gas solution, and the liquid filling part 27 is filled with liquid by the liquid filling part 27. A container sealing portion 28 for sealing the plastic bottle 29a is connected.
上記形態における本実施例について添付図面を用いて以下詳細に説明する。
図１は、本実施例に係る気体溶解装置１０の全体構成を示す概念図である。
図１に示すように、気体注入部１１は別途設けられたボンベ等（図１には図示せず）から供給される窒素ガスを注入する。
また、液体注入部１２に注入される液体は、別途プラント設備（図１には図示せず）から管路（図１には図示せず）を介して注入される。
また、上記気体注入部１１から注入される窒素ガスの圧力は約１ＭＰａに調整されている。
This embodiment in the above mode will be described in detail below with reference to the accompanying drawings.
FIG. 1 is a conceptual diagram showing an overall configuration of a gas dissolving apparatus 10 according to the present embodiment.
As shown in FIG. 1, the gas injection unit 11 injects nitrogen gas supplied from a separately provided cylinder or the like (not shown in FIG. 1).
Moreover, the liquid inject | poured into the liquid injection | pouring part 12 is inject | poured through a pipe line (not shown in FIG. 1) from plant equipment (not shown in FIG. 1) separately.
The pressure of the nitrogen gas injected from the gas injection part 11 is adjusted to about 1 MPa.
また、図１に示すように静止型混合器１７ａ、１７ｂである上記気液混合溶解器１３、１３は、一般的に円筒形の外筒２５ａ、２５ｂの内方に、仕切板２６ｂ、２６ｂが配置されて形成されており、上記仕切り板２６ｂ、２６ｂによって内部に流通する液体に旋回流を発生させるように形成されている。
これにより、上記液体に混合された窒素ガスは上記液体内において微細の泡状となり、液体との接触面積が拡大することから、より溶解し易くなる。
なお、上記外筒２５ａ、２５ｂ、仕切板２６ｂ、２６ｂの形状等が異なっている場合であっても、窒素ガスを微細化して液体と混合させる仕様を有していれば、適宜変更が可能である。
Further, as shown in FIG. 1, the gas-liquid mixing dissolvers 13 and 13 which are stationary mixers 17a and 17b are generally provided with partition plates 26b and 26b inside the cylindrical outer cylinders 25a and 25b. The partition plates 26b and 26b are formed so as to generate a swirling flow in the liquid flowing through the partition plates 26b and 26b.
As a result, the nitrogen gas mixed in the liquid becomes a fine bubble in the liquid, and the contact area with the liquid is increased, so that the nitrogen gas is more easily dissolved.
Even if the outer cylinders 25a and 25b and the shape of the partition plates 26b and 26b are different, the outer cylinders 25a and 25b and the partition plates 26b and 26b can be appropriately changed as long as they have specifications for making nitrogen gas fine and mixing with liquid. is there.
また、図１に示すように上記気液分離部１５の加圧タンク１９には、溶解した窒素ガスが溶け出さないため、所定の飽和圧力に保たれており、本実施例の場合は、約０．４ＭＰａに設定されている。
上記加圧タンク１９の上部には、未溶解の窒素ガスによって加圧タンク１９内の窒素ガス圧力が上記飽和圧力を超えた場合に、上記窒素ガスを排出する、圧力計測装置２２を備えた圧力調整弁部２０が配設されている。
また、上記加圧タンク１９の底部には、流量調整バルブ２１が配設され、上記流量調整バルブ２１は上記減圧管路部１６に接続されている。
また、上記流量調整バルブ２１は、開閉操作時において、上記液体に与える衝撃を抑制するために、可能な限り開閉時の差圧を抑制しうるように形成されている。
Further, as shown in FIG. 1, the pressurized tank 19 of the gas-liquid separator 15 is kept at a predetermined saturation pressure because the dissolved nitrogen gas does not dissolve out. It is set to 0.4 MPa.
The pressure tank 19 is provided with a pressure measuring device 22 at the top of the pressurized tank 19 for discharging the nitrogen gas when the nitrogen gas pressure in the pressurized tank 19 exceeds the saturation pressure due to undissolved nitrogen gas. An adjustment valve unit 20 is provided.
A flow rate adjusting valve 21 is disposed at the bottom of the pressurizing tank 19, and the flow rate adjusting valve 21 is connected to the pressure reducing line portion 16.
Further, the flow rate adjusting valve 21 is formed so as to suppress the differential pressure during opening and closing as much as possible in order to suppress the impact applied to the liquid during the opening and closing operation.
また、図１に示すように、上記減圧管路部１６は管路の径寸法は通常の管路の径寸法よりも細径の５０ｍｍに形成され、また、上記減圧管路部１６の長さ寸法は３０，０００ｍｍに形成されているが、上記減圧管路部１６の径寸法及び長さ寸法は、最終的に目標の液体圧力となるように適宜変更が可能である Further, as shown in FIG. 1, the pressure reducing pipe section 16 is formed such that the diameter of the pipe is 50 mm, which is smaller than the diameter of the normal pipe, and the length of the pressure reducing pipe section 16 is longer. Although the dimension is formed to be 30,000 mm, the diameter dimension and the length dimension of the pressure reducing pipe line portion 16 can be appropriately changed so as to finally become a target liquid pressure.
また、上記減圧管路部１６と上記次工程設備用タンク２４とを接続可能とすると共、送液時において、上記液体に与える衝撃を抑制し、溶解した窒素ガスの放出を防止するために、上記接続管路部２３は上記次工程設備タンク２４に向かって次第に太径となるように形成されている。
また、上記次工程設備タンク２４には、窒素ガスが溶解した液体をペットボトル２９ａに充填するための液体充填部２７と、上記液体充填部２７によって液体が充填されたペットボトル２９ａの蓋部２９ｂを封止する容器封止部２８とが夫々接続されている。
なお、本実施例においては、上記液体充填部２７は次工程設備用タンク２４に接続する構成としているが、上記次工程設備用タンク２４は、一時的に気体溶解液を保持するものであるため、必須の構成ではなく、この場合、上記液体充填部２７と上記接続管路部２３が直接接続された構成としても良い。
Moreover, in order to be able to connect the decompression pipe section 16 and the tank for the next process equipment 24, in order to suppress the impact given to the liquid during liquid feeding and to prevent the release of dissolved nitrogen gas, The connecting pipe line portion 23 is formed so as to gradually increase in diameter toward the next process equipment tank 24.
The next process equipment tank 24 has a liquid filling part 27 for filling the plastic bottle 29a with a liquid in which nitrogen gas is dissolved, and a lid part 29b of the plastic bottle 29a filled with the liquid by the liquid filling part 27. And a container sealing portion 28 for sealing each of the two.
In the present embodiment, the liquid filling unit 27 is connected to the next process equipment tank 24. However, the next process equipment tank 24 temporarily holds a gas solution. In this case, the liquid filling part 27 and the connection pipe line part 23 may be directly connected.
上記実施例の構成における作用について、図面を用いて説明する。
図１に示すように気体注入部１１から注入された窒素ガスは、上記静止型混合器１７ａ、１７ｂによって微細化して液体と混合されることによって、液体に溶解され、上記液体は、上記背圧バルブ１８によって所定圧である０．４ＭＰａを保持しながら上記気液分離部１５に流入する。（図２における気液混合溶解工程３１に相当）。
なお、上記背圧バルブ１８は圧力調整の他、上記液体が上記背圧バルブ１８の挟所を通過することによって、上記窒素ガスと上記液体との接触が促進され、窒素ガスの溶解度を更に高める作用を有している。
また、図２における上記気液混合溶解工程３１の後、図１に示すように、記気液分離部１５の加圧タンク１９において、流入した気体溶解液を、内部圧を０．４ＭＰａに保持しながら所定時間貯蔵し、上記窒素ガスが溶解した液体と、溶解されずに残存した窒素ガスとを分離する（図２における気液分離工程３２に相当）。
上記加圧タンク１９内を加圧する理由は、上記背圧バルブ１８を介して流入した液体に溶解された窒素ガスが必要以上に放出しないようにするためである。
上記気液分離工程３２の後、上記液体を、所定の流量で、減圧管路部１６内に流通させることにより、上記液体と上記減圧管路部１６の内壁との摩擦抵抗から生じる圧力損失によって、上記液体の圧力は連続的に減圧される（図２における減圧工程３３に相当）。
この際、バルブ等の装置を介していないため、上記液体に不要な衝撃を与えることが無く、溶解した窒素ガスの放出を抑制することが可能である。
減圧後の上記液体は、次第に口径が拡大する接続管路部２３を経由して、更に減圧されつつ次工程設備用タンク２４に流入する（図２における搬送工程３４に相当）。
本実施例によって、極めて難溶解性である窒素ガスを、効率的に液体に溶解させることが可能である。
更に、上記気体溶解液体は、上記液体充填部２７によってペットボトル２９ａに上記液体が充填され（図２における液体充填工程３５に相当）た後、上記ペットボトル２９ａは上記容器封止部２８によって、蓋部２９ｂが封止される（図２における容器封止工程３６に相当）。
その後、上記ペットボトル２９ａ内には、上記気体溶解液体に溶解した窒素ガスが気液平衡状態となるまで徐々に放出される。
従って、発生した窒素ガスによって、ペットボトル２９ａの内圧が上昇し、搬送時等に衝撃を受けた場合でも、ペットボトル２９ａが変形破損し難いという効果を呈する。
また、充填される液体は常温下で処理されているため、搬送中にペットボトル２９ａの外表面部に結露が生じる虞もない。
The operation of the above embodiment will be described with reference to the drawings.
As shown in FIG. 1, the nitrogen gas injected from the gas injection unit 11 is dissolved in the liquid by being refined by the static mixers 17a and 17b and mixed with the liquid, and the liquid is subjected to the back pressure. The valve 18 flows into the gas-liquid separator 15 while maintaining a predetermined pressure of 0.4 MPa. (Equivalent to the gas-liquid mixing and dissolution step 31 in FIG. 2).
In addition to adjusting the pressure, the back pressure valve 18 allows the liquid to pass through the niche of the back pressure valve 18 to promote contact between the nitrogen gas and the liquid, thereby further increasing the solubility of the nitrogen gas. Has an effect.
In addition, after the gas-liquid mixing and dissolving step 31 in FIG. 2, as shown in FIG. 1, in the pressurized tank 19 of the gas-liquid separating unit 15, the inflowing gas dissolved liquid is maintained at an internal pressure of 0.4 MPa. While being stored for a predetermined time, the liquid in which the nitrogen gas is dissolved is separated from the nitrogen gas remaining without being dissolved (corresponding to the gas-liquid separation step 32 in FIG. 2).
The reason for pressurizing the inside of the pressurizing tank 19 is to prevent the nitrogen gas dissolved in the liquid flowing in through the back pressure valve 18 from being released more than necessary.
After the gas-liquid separation step 32, the liquid is caused to flow at a predetermined flow rate in the decompression pipe section 16, thereby causing a pressure loss caused by frictional resistance between the liquid and the inner wall of the decompression pipe section 16. The pressure of the liquid is continuously reduced (corresponding to the pressure reduction step 33 in FIG. 2).
At this time, since no device such as a valve is used, unnecessary discharge is not given to the liquid, and release of dissolved nitrogen gas can be suppressed.
The liquid after depressurization flows into the next process facility tank 24 through the connection pipe line portion 23 whose diameter is gradually enlarged, while being further depressurized (corresponding to the transfer process 34 in FIG. 2).
According to this embodiment, it is possible to efficiently dissolve nitrogen gas, which is extremely difficult to dissolve, in a liquid.
Further, after the gas-dissolved liquid is filled in the plastic bottle 29a by the liquid filling part 27 (corresponding to the liquid filling step 35 in FIG. 2), the plastic bottle 29a is The lid portion 29b is sealed (corresponding to the container sealing step 36 in FIG. 2).
Thereafter, nitrogen gas dissolved in the gas-dissolved liquid is gradually released into the PET bottle 29a until a gas-liquid equilibrium state is reached.
Therefore, the generated nitrogen gas increases the internal pressure of the PET bottle 29a, and the PET bottle 29a is less likely to be deformed and damaged even when impacted during transportation.
In addition, since the liquid to be filled is processed at room temperature, there is no possibility of condensation on the outer surface of the PET bottle 29a during transportation.
なお、本実施例においては、上記減圧管路部１６と上記接続管路部２３を独立した設備とし、且つ上記減圧工程３３と上記搬送工程３４とを別工程として記載したが、上記減圧管路部１６と接続管路部２３の必要な仕様を満たせば、一体の設備とすることも可能であり、この場合、上記減圧工程３３と搬送工程３４は一体の工程となる。 In the present embodiment, the decompression pipe section 16 and the connection duct section 23 are independent facilities, and the decompression process 33 and the transport process 34 are described as separate processes. If the required specifications of the section 16 and the connecting pipe line section 23 are satisfied, it is possible to make an integrated facility. In this case, the pressure reducing step 33 and the transporting step 34 are integrated steps.
更に、本実施例においては、溶解対象気体が窒素である場合を例に説明したが、窒素以外であっても、気体の溶解プロセスは共通であり、さまざまな気体に適用することができる。
従って、本発明は易溶解性の気体、例えば二酸化炭素を溶解する所謂カーボネーターとして使用することも可能である。
Furthermore, in the present embodiment, the case where the gas to be dissolved is nitrogen has been described as an example. However, even if the gas to be dissolved is other than nitrogen, the gas dissolution process is common and can be applied to various gases.
Therefore, the present invention can also be used as a so-called carbonator that dissolves an easily soluble gas such as carbon dioxide.
本発明は液体に難溶解性の気体を溶解させるための気体溶解装置及び気体溶解方法に適用可能である。 The present invention is applicable to a gas dissolving apparatus and a gas dissolving method for dissolving a hardly soluble gas in a liquid.
１０ 気体溶解装置
１１ 気体注入部
１２ 液体注入部
１３ 気液混合溶解器
１４ 気液混合溶解部
１５ 気液分離部
１６ 減圧管路部
１７ａ静止型混合器
１７ｂ静止型混合器
１８ 背圧バルブ
１９ 加圧タンク
２０ 圧力調整弁部
２１ 流量調整バルブ
２２ 圧力計測部
２３ 接続管路部
２４ 次工程設備用タンク
２５ａ円筒
２５ｂ円筒
２６ａ仕切り板部
２６ｂ仕切り板部
２７ 液体充填部
２８ 容器封止部
２９ａペットボトル
２９ｂ蓋部
３０ 気液混合方法
３１ 気液混合溶解工程
３２ 気液分離工程
３３ 減圧工程
３４ 搬送工程
３５ 液体充填工程
３６ 容器封止工程
DESCRIPTION OF SYMBOLS 10 Gas dissolution apparatus 11 Gas injection part 12 Liquid injection part 13 Gas-liquid mixing and dissolving part 14 Gas-liquid mixing and dissolving part 15 Gas-liquid separation part 16 Pressure reduction line part 17a Static type mixer 17b Static type mixer 18 Back pressure valve 19 Addition Pressure tank 20 Pressure adjusting valve portion 21 Flow rate adjusting valve 22 Pressure measuring portion 23 Connection pipe portion 24 Tank for next process equipment 25a cylinder 25b cylinder 26a partition plate portion 26b partition plate portion 27 liquid filling portion 28 container sealing portion 29a PET bottle 29b Lid 30 Gas-liquid mixing method 31 Gas-liquid mixing and dissolution process 32 Gas-liquid separation process 33 Depressurization process 34 Transport process 35 Liquid filling process 36 Container sealing process
Claims (10)
所定圧に加圧された気体を注入する気体注入部と、
所定圧に加圧された液体を注入する液体注入部と、
上記気体注入部及び上記液体注入部に接続されると共に、注入された上記気体と液体とを混合して溶解させる気液混合溶解器、及び上記気体が溶解した液体を注入時の圧力よりも低い所定圧まで減圧させる背圧バルブとを有する気液混合溶解部と、
上記気液混合溶解部に接続されると共に、注入時の圧力よりも低い所定圧に加圧され、上記気体が溶解した液体と、上記気液混合溶解部おいて溶解しなかった気体とを、所定時間貯蔵して分離する気液分離部と、
上記気液分離部に接続され、所定長及び所定径寸法を有し、上記気体が溶解された液体を減圧する減圧管路部とを有し、
上記減圧管路部は次工程設備側に向かって次第に太径となる接続管路部を介して、次工程設備に接続されており、
上記次工程設備は、上記気体が溶解した液体を容器に充填する液体充填部と、上記液体充填部において上記液体を封入した容器を封止する容器封止部とを備えることを特徴とする気体溶解装置。 A gas dissolving device for dissolving a hardly soluble gas in a liquid,
A gas injection part for injecting a gas pressurized to a predetermined pressure;
A liquid injection part for injecting a liquid pressurized to a predetermined pressure;
A gas-liquid mixing dissolver that is connected to the gas injection part and the liquid injection part and mixes and dissolves the injected gas and liquid, and a pressure lower than the pressure at the time of injection of the liquid in which the gas is dissolved A gas-liquid mixing and dissolving part having a back pressure valve for reducing the pressure to a predetermined pressure;
The liquid that is connected to the gas-liquid mixing and dissolving portion and is pressurized to a predetermined pressure lower than the pressure at the time of injection, and the gas is dissolved, and the gas that is not dissolved in the gas-liquid mixing and dissolving portion, A gas-liquid separator that stores and separates for a predetermined time; and
Connected to the gas-liquid separation part, having a predetermined length and a predetermined diameter, and having a decompression pipe part for depressurizing the liquid in which the gas is dissolved,
The decompression pipe line part is connected to the next process equipment via a connection pipe part gradually becoming a diameter toward the next process equipment side,
The next process facility includes a liquid filling unit that fills a container with a liquid in which the gas is dissolved, and a container sealing unit that seals the container in which the liquid is sealed in the liquid filling unit. Melting device.
上記静止型混合器は上記背圧バルブを介して上記気液分離部に接続されていることを特徴とする請求項１記載の気体溶解装置。 The gas-liquid mixing dissolver consists of a static mixer connected to the gas injection part and the liquid injection part,
2. The gas dissolving apparatus according to claim 1, wherein the static mixer is connected to the gas-liquid separator through the back pressure valve.
上記加圧タンクには、内部の気体圧力が所定圧以上となった場合に上記気体を排出する圧力調整弁部が設けられていることを特徴とする請求項１または２いずれか１項に記載の気体溶解装置。 The gas-liquid separator is a pressurized tank having a predetermined volume,
3. The pressure tank according to claim 1, wherein the pressure tank is provided with a pressure adjusting valve portion that discharges the gas when an internal gas pressure becomes a predetermined pressure or more. Gas dissolving device.
所定圧に加圧されて注入された気体を微細化し、所定圧に加圧されて注入された液体と混合し、上記気体を上記液体に溶解させ、背圧バルブによって所定圧に減圧して流出させる気液混合溶解工程と、
上記気液混合溶解工程の後、流入された気体溶解液を、内部圧を所定圧に保持しながら所定時間貯蔵し、上記気体が溶解された液体と、上記液体に溶解されずに残存した気体とを分離する気液分離工程と、
上記気液分離工程の後、上記液体を、所定の流量で、所定長及び所定径寸法を有する減圧管路部内に流通させることによる圧力損失によって上記液体の圧力を減圧する減圧工程と、
上記減圧工程によって減圧された上記液体を次第に減圧しつつ、次第に口径が拡大する接続管路部を経由して次工程に搬送する搬送工程とを備えることを特徴とする気体溶解方法。 A gas dissolution method for dissolving a hardly soluble gas in a liquid,
The gas injected by being pressurized to a predetermined pressure is refined, mixed with the liquid injected by being pressurized to a predetermined pressure, the gas is dissolved in the liquid, and the pressure is reduced to a predetermined pressure by a back pressure valve and flows out. A gas-liquid mixing and dissolving step,
After the gas-liquid mixing and dissolving step, the gas solution that has flowed in is stored for a predetermined time while maintaining the internal pressure at a predetermined pressure, and the liquid in which the gas is dissolved and the gas that remains without being dissolved in the liquid A gas-liquid separation step for separating
After the gas-liquid separation step, the pressure reduction step of reducing the pressure of the liquid by pressure loss caused by circulating the liquid at a predetermined flow rate in a pressure reduction pipe portion having a predetermined length and a predetermined diameter,
A gas dissolving method comprising: a transporting step of transporting to the next step through a connecting pipe portion having a gradually increasing diameter while gradually reducing the pressure of the liquid decompressed in the pressure reducing step.
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