JP6373394B2 - 希釈液製造方法および希釈液製造装置 - Google Patents
希釈液製造方法および希釈液製造装置 Download PDFInfo
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- JP6373394B2 JP6373394B2 JP2016548772A JP2016548772A JP6373394B2 JP 6373394 B2 JP6373394 B2 JP 6373394B2 JP 2016548772 A JP2016548772 A JP 2016548772A JP 2016548772 A JP2016548772 A JP 2016548772A JP 6373394 B2 JP6373394 B2 JP 6373394B2
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- 238000004519 manufacturing process Methods 0.000 title claims description 86
- 239000003085 diluting agent Substances 0.000 title claims description 69
- 239000007788 liquid Substances 0.000 claims description 198
- 238000010790 dilution Methods 0.000 claims description 57
- 239000012895 dilution Substances 0.000 claims description 57
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 48
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 48
- 239000000243 solution Substances 0.000 claims description 36
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 29
- 239000012498 ultrapure water Substances 0.000 claims description 29
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 14
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 238000007865 diluting Methods 0.000 claims description 6
- 239000003792 electrolyte Substances 0.000 claims description 6
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 27
- 238000004140 cleaning Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 8
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- 239000012897 dilution medium Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000008155 medical solution Substances 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 239000012776 electronic material Substances 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005339 levitation Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000020354 squash Nutrition 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Description
直径D[m]、長さL[m]の円管を通して粘性のある液体が一定時間内に流れる量Q[m3/s]は、
Q = π × D4 × ΔP ÷ (128 × μ × L)
で与えられる。つまり、「流量Q[m3/s]は、直径D[m]の4乗に比例し、管の両端の圧力勾配ΔP[Pa]に比例し、管の長さL[m]に反比例し、粘性係数μ[Pa・s]に反比例する」。これをハーゲン・ポアズイユの法則という。
Re= u × D ÷ ν
で定義される。この式によれば、管内の平均流速u[m/s]が速いほど、管の内径D[m]が大きいほど、動粘性係数ν[m2/s]が小さいほど、レイノルズ数Reは大きくなって、管内の流れが乱流になりやすくなる。
図1は本発明の実施形態1の希釈液製造装置を概念的に示している。ただし、図1に記載されていないが、図中の配管系統にフィルターや弁などが設置されていてもよい。
図2は本発明の実施形態2の希釈液製造装置を概念的に示している。ここでは、実施形態1と同じ構成要素に同一の符号を使用し、実施形態1と異なる点を主に説明する。
図3は本発明の実施形態3の希釈液製造装置を概念的に示している。ここでは、実施形態1、2と同じ構成要素に同一の符号を使用し、実施形態1、2と異なる点を主に説明する。
図4に実施例1の希薄アンモニア水製造装置の概念図を示す。
図6に実施例2の希薄アンモニア水製造装置の概念図を示す。
図7に実施例3の希薄アンモニア水製造装置の概念図を示す。
実施例4では、第2の配管13として、0.2mmの内径で3mの長さを有するPFA製の管を使用して、導電率が5μS/cm(目標値)になるように希薄アンモニア水を製造した。これら以外の構成は実施例3と変わらない。
図8に比較例1の希薄アンモニア水製造装置の概念図を示す。
図9に比較例2の希薄アンモニア水製造装置の概念図を示す。
また、微少量の薬液を超純水に添加するための管(第2の配管13)の内径がどのような範囲内に設定された場合に薬液添加量を精密に制御できるかを確認するために、以下に示す実験を行った。すなわち、同じ長さであるが内径の異なる3種類の管を用意し、各内径の管で超純水を流したときの差圧(即ち管両端間の圧力勾配)を測定し、流量と差圧の間に比例関係が存在する範囲を確認した。なお、用意した3種類の管は長さが2mで、それぞれの内径がφ2.5mm、φ4mm、φ6mmである。
12・・・タンク 12A・・・一次タンク
12B・・・二次タンク 13・・・第2の配管
14・・・流量計 15・・・測定器
15A・・・導電率計 16・・・タンク内圧力調整器
16A・・・レギュレータ 17・・・制御部
18,18A・・・圧力計 19・・・連結部圧力調整器
19A・・・定量ポンプ 20A,20B・・・薬液注入ポンプ
Claims (14)
- 第1の液体に対して第2の液体を添加することで該第2の液体の希釈液を製造する希釈液製造方法であって、
第1の配管に前記第1の液体を流す段階と、
前記第2の液体を貯留するタンク内の圧力を制御して、前記タンクと前記第1の配管とを接続する第2の配管を通じて、前記第1の配管内を流れる前記第1の液体に前記第2の液体を添加する段階と、を含み、
前記第2の液体を添加する段階が、
前記第1の配管内を流れる前記第1の液体または前記希釈液の流量を測定する段階と、
前記希釈液の成分濃度を測定する段階と、
前記第1の配管内の圧力を測定する段階と、
前記流量、前記成分濃度、および前記圧力の測定値に基づき、前記希釈液の成分濃度が所定の値になるように前記タンク内の圧力を制御する段階と、を含む、
希釈液製造方法。 - 請求項1に記載の希釈液製造方法であって、
前記第2の液体を添加する段階が、前記第2の配管に前記第2の液体を層流状態で流すことを含む、希釈液製造方法。 - 請求項1または2に記載の希釈液製造方法であって、
前記第2の液体を添加する段階が、0.1mmを超え4mm以下の範囲である内径の前記第2の配管に前記第2の液体を流すことを含む、希釈液製造方法。 - 請求項1から3のいずれか1項に記載の希釈液製造方法であって、
前記第1の配管内の圧力を測定する段階が、前記第1の配管の前記第2の配管との連結部における管内の圧力を測定することを含む、希釈液製造方法。 - 請求項4に記載の希釈液製造方法であって、
前記第2の液体を添加する段階が、前記圧力の測定値に基づいて前記連結部における管内の圧力を所定の値に調整する段階をさらに含む、希釈液製造方法。 - 請求項1から5のいずれか1項に記載の希釈液製造方法であって、
前記第1の液体が超純水であり、前記第2の液体が電解質を溶解した水溶液である、希釈液製造方法。 - 請求項1から5のいずれか1項に記載の希釈液製造方法であって、
前記第1の液体が超純水であり、前記第2の液体がアンモニア水溶液である、希釈液製造方法。 - 第1の液体に対して第2の液体を添加することで該第2の液体の希釈液を製造する希釈液製造装置であって、
前記第1の液体を供給する第1の配管と、
前記第2の液体を貯留するタンクと、
前記タンクから前記第2の液体を前記第1の配管内に供給する第2の配管と、
前記第1の配管内を流れる前記第1の液体または前記希釈液の流量を測定する流量計と、
前記希釈液の成分濃度を測定する測定器と、
前記第1の配管内の圧力を測定する圧力計と、
前記流量計、前記測定器、および前記圧力計の測定値に基づき、前記希釈液の成分濃度が所定の値になるように前記タンク内の圧力を制御する制御部と、を有する希釈液製造装置。 - 請求項8に記載の希釈液製造装置であって、
前記第2の液体が前記第2の配管内を層流状態で流れるようになっている、希釈液製造装置。 - 請求項8または9に記載の希釈液製造装置であって、
前記第2の配管の内径が0.1mmを超え4mm以下の範囲である、希釈液製造装置。 - 請求項8から10のいずれか1項に記載の希釈液製造装置であって、
前記第1の配管が、前記第1の液体として超純水を供給し、前記第2の配管が、前記第2の液体として電解質を溶解した水溶液を供給し、前記測定器が、前記希釈液の成分濃度として電気導電率を測定する、希釈液製造装置。 - 請求項8から10のいずれか1項に記載の希釈液製造装置であって、
前記第1の配管が、前記第1の液体として超純水を供給し、前記第2の配管が、前記第2の液体としてアンモニア水溶液を供給し、前記測定器が、前記希釈液の成分濃度として電気導電率を測定する、希釈液製造装置。 - 請求項8から12のいずれか1項に記載の希釈液製造装置であって、
前記圧力計が、前記第1の配管の前記第2の配管との連結部における管内の圧力を測定するようになっている、希釈液製造装置。 - 請求項13に記載の希釈液製造装置であって、
前記圧力計の測定値に基づいて前記連結部における管内の圧力を所定の値に調整する連結部圧力調整器をさらに有する、希釈液製造装置。
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