JP6791949B2 - スケール抑制剤の方法及び組成物 - Google Patents
スケール抑制剤の方法及び組成物 Download PDFInfo
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- JP6791949B2 JP6791949B2 JP2018509783A JP2018509783A JP6791949B2 JP 6791949 B2 JP6791949 B2 JP 6791949B2 JP 2018509783 A JP2018509783 A JP 2018509783A JP 2018509783 A JP2018509783 A JP 2018509783A JP 6791949 B2 JP6791949 B2 JP 6791949B2
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C57/00—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
- C07C57/30—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms containing six-membered aromatic rings
- C07C57/34—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms containing six-membered aromatic rings containing more than one carboxyl group
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
-
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Description
一般に、カルボキシル化超分岐ポリグリセロールは当業者に知られている。代表的なポリグリセロールとしては、任意の数の経路を介して合成されたものが挙げられる。
実験は、シミュレートした生産条件下で、無機スケール形成をちょうど抑制する有効最小抑制剤濃度(MIC)を決定するために実験室で行うことができる。生じた流体中のスケール抑制剤の量を迅速かつ正確に決定し、これを、産出されたMIC値と比較するオペレーターの能力により、無機スケール堆積に起因してレザーバーまたは設備に損傷が起こらないようにするためにレザーバーを再処理するかまたはトップサイド添加速度を増加させることが必要または望ましいときに、オペレーターは決断することができる。
スケール抑制剤−カルボキシル化超分岐(cHPG)及びポリアクリル酸(PAA)を、試験ブライン溶液において、阻害有効性について評価した。評価は5つの異なる濃度:すなわち、1、10、20、100及び200ppm(活性物質の%を基準として)のスケール抑制剤について行う。
cHPG及びPAAに関するスケール抑制有効性を評価するための試験ブライン溶液の組成は、NACE TM0374法に従って構成され、カルシウム含有ブライン溶液とスルフェート含有ブライン溶液との組み合わせである。11.10gのCaCl22H2O、7.50gのNaClを添加し、脱イオン水で溶解して1,000mLにすることにより、1,000mLのカルシウム含有ブライン溶液を調製する。10.66gのNa2SO4及び7.50gのNaClを添加し、脱イオン水で溶解して1,000mLにすることにより、1,000mLのスルフェート含有ブライン溶液を調製する。cHPG及びPAAの両方について、スケール抑制剤の1000ppm水性原液を、脱イオン水を使用して250mLのプラスチックボトルにおいて作製する。
125mLガラスボトル中に、カルシウム含有ブライン及びスルフェート含有ブラインの原液をそれぞれ50mL加える。100mLの試験ブライン溶液に対して、1,000ppmのcHPG及びPPA原液から適当量を添加して、1、10、20、100、及び200ppmのスケール抑制剤を含むcHPG及びPAAブライン溶液を提供する。スケール抑制剤の添加後、ボトルに蓋をし、直ぐに撹拌して内容物を混合する。各サンプルについて、二重反復試験溶液を調製する。スケール抑制剤を有していないブラインのブランク溶液(各ブライン溶液50mL)も調製し、蓋をし、撹拌する。試験ボトルを約70℃の油浴中に24時間配置する。次いで、取り出し、2時間未満の間に周囲温度まで冷却した。
スケール抑制をICPによって測定する。以下の手順に従ってICP分析のためのサンプルを調製する。
1.約1gの抑制剤溶液を、濾過シリンジにより50mLのICPバイアルに加える。
2.そのサンプルを0.25NのHCl溶液で約40gに希釈し、
3.ブランク対照サンプルとして使用するために、約0.5gのカルシウム含有ブライン原液を、0.25NのHClを有する40gに添加し、
4.各ICPバイアルに蓋をして内容物をよく混合し、
5.各サンプルの重量を記録し、
6.カルシウムイオン濃度を測定する。
カルシウム含有ブラインに対するcHPGの相溶性もまた試験した。
以下の相溶性研究は10重量%のcHPGで行った。
A=2.2827g cHPG+20.08g H2O
D=1.9859g cHPG+18.00g H2O
E=1.2858g cHPG+11.60g H2O
A、D、及びE−Shearwaterカチオン性ブラインに溶解
B、C、及びF−元の溶液(水に溶解)=cHPGをShearwaterカチオン性ブラインに溶解したときに沈殿または非相溶性が生じなかったことを、比較のために示す。
A−明澄、透明な溶液−相溶性
D−明澄、透明な溶液−相溶性
E−cHPGは完全には溶解していない−非相溶性
の実施形態で代替し得ることが理解されよう。様々な実施形態を説明した。これら及び他の実施形態は以下の特許請求の範囲内にある。
(態様)
(態様1)
水系のスケール抑制処理の方法であって、水性スケール抑制組成物を前記水系中に導入することを含み、前記水性スケール抑制組成物がカルボキシル化超分岐ポリグリセロールを含む、方法。
(態様2)
前記ポリマー濃度1〜60重量%、態様1に記載の方法。
(態様3)
前記ポリマーが、約1,000Da〜50,000Daの分子量を有する、態様1に記載の方法。
(態様4)
前記水性スケール抑制組成物が、約2〜14の範囲のpHを有する水性環境で使用することができる、態様1に記載の方法。
(態様5)
前記水性スケール抑制組成物が、約20℃〜300℃の範囲の温度を有する水性環境で使用することができる、態様1に記載の方法。
(態様6)
前記水性スケール抑制組成物が、約2000〜400,000tdsの範囲の全溶存固形分を有する水性環境で使用することができる、態様1に記載の方法。
Claims (6)
- 水系のスケール抑制処理の方法であって、水性スケール抑制組成物を前記水系中に導入することを含み、前記水性スケール抑制組成物が、
- 前記ポリマーが、前記水性スケール抑制組成物に基づいて、濃度1〜60重量%である、請求項1に記載の方法。
- 前記ポリマーが、1,000Da〜50,000Daの分子量を有する、請求項1に記載の方法。
- 前記水性スケール抑制組成物が、2〜14の範囲のpHを有する水性環境で使用される、請求項1に記載の方法。
- 前記水性スケール抑制組成物が、20℃〜300℃の範囲の温度を有する水性環境で使用される、請求項1に記載の方法。
- 前記水性スケール抑制組成物が、2000〜400,000tdsの範囲の全溶存固形分を有する水性環境で使用される、請求項1に記載の方法。
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PCT/US2016/050083 WO2017044383A1 (en) | 2015-09-10 | 2016-09-02 | Scale inhibitor methods and compositions |
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