JP5501975B2 - 水溶性高分子の溶解方法 - Google Patents
水溶性高分子の溶解方法 Download PDFInfo
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- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
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- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
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- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
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- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/20—Dissolving using flow mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/30—Workflow diagrams or layout of plants, e.g. flow charts; Details of workflow diagrams or layout of plants, e.g. controlling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/50—Pipe mixers, i.e. mixers wherein the materials to be mixed flow continuously through pipes, e.g. column mixers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Accessories For Mixers (AREA)
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Description
水溶性高分子水溶液の使用時に前記貯蔵している一時水溶液を希釈倍率2〜30倍の二次水溶液に希釈して使用に供する二次水溶液製造工程と、
を有することを特徴とする水溶性高分子の溶解方法。
2 希釈水供給管
A 希釈水を所定の流量で送液する手段
4 インラインミキサー
X 希釈水の流れ方向
6 一次水溶液槽
8 一次水溶液
10 底壁
12 一次水溶液供給管
B 一次水溶液を送液する手段
14 制御部
カチオン性単量体とアニオン性単量体とを併用する場合は、(メタ)アクリルアミドの併用割合は、5〜80モル%が好ましく、10〜70モル%がより好ましく、20〜50モル%が特に好ましい。
水溶性高分子の溶解方法を検討するに際し、先ず、下記前提条件a)、b)を確認した。
(b) 一次水溶液を用いて二次水溶液を製造する時間が短く、且つ製造が容易であること
表1に記載する条件で確認試験を行った。即ち、銘柄A〜Gの水溶性高分子を用いて、通常溶解法により濃度0.1質量%の水溶性高分子水溶液を調製した。この際、溶解開始後の経過時間に対する水溶性高分子水溶液の溶解状態を観察した。一方、同様にして0.5質量%、1.0質量%、1.2質量%の一次水溶液を調製した。その際、前記通常溶解法の場合と同様にして、溶解開始後の経過時間に対する水溶性高分子水溶液の溶解状態を観察した。これらの結果を表2に示した。
一次水溶液を希釈して、均一な二次水溶液を得るために必要な時間(二次溶解時間)を検討した。検討条件を表4に、検討結果を表5に示した。
一段階で目的水溶液濃度に溶解する通常溶解法と、一次水溶液を更に二次水溶液に希釈する本発明の二段階溶解法とを用いて、水溶性高分子水溶液を製造した。水溶性高分子水溶液を製造する際に、これらの溶解法と、これら溶解法により得られる水溶性高分子水溶液の粘度、カチオン価との関係を検討した。
表9に示す塩類を含む模擬鉱水を調製した。一般に、鉱水を用いて調製する水溶性高分子水溶液の粘度は、金属イオンを含まない水を用いて調製する水溶性高分子水溶液の粘度よりも低くなる。更に、鉱水を用いて調製する水溶性高分子水溶液のカチオン価は、塩が共存するため、測定し難い。
製紙工場排水汚泥の脱水試験
水溶性高分子水溶液を用いて、製紙工場排水汚泥の脱水試験を行った。試験条件を表11に記載した。試験結果を表12に示した。ろ水量に関しては、微差ではあるが、本発明の二段溶解法が有利であった。ケーキ含水率は、比較例の方が高かった。
水溶性高分子水溶液を用いて、下水処理場消化汚泥の脱水試験を行った。試験条件を表13に記載した。試験結果を表14に示した。
水溶性高分子水溶液を用いて、抄紙歩留り試験を実験室規模で行った。試験条件を表15に、結果を表16に示した。
通常希釈法よりも二段溶解法により調製した高分子水溶液を用いる方が、抄紙歩留り性能がよかった。通常希釈法による場合は、若干ながらも水溶性高分子の性能低下が生じているものと思われる。
水溶性高分子水溶液を用いて、製紙マシンを用いる実機試験を行い、表18に示す項目を評価した。結果を表18に示した。なお、試験条件を表17に示した。
Claims (4)
- カチオン性単量体単位を40モル%以上含むカチオン性水溶性高分子粉末又はカチオン性単量体単位を40モル%以上含む両性水溶性高分子粉末、又はこれらの水溶性高分子を25質量%以上含む水溶性高分子水溶液を、
30分〜2時間撹拌しながら水に溶解させることにより得られる、前記水溶性高分子が0.3〜1質量%溶解する一次水溶液を、
その使用時に希釈倍率2〜30倍の二次水溶液に希釈して使用に供することを特徴とする水溶性高分子の溶解方法。 - インラインミキサーを用いて一次水溶液を二次水溶液に希釈する請求項1に記載の水溶性高分子の溶解方法。
- カチオン性単量体単位を40モル%以上含むカチオン性水溶性高分子粉末又はカチオン性単量体単位を40モル%以上含む両性水溶性高分子粉末、又はこれらの水溶性高分子を25質量%以上含む水溶性高分子水溶液を、
30分〜2時間撹拌しながら水に溶解させて前記水溶性高分子が0.3〜1質量%溶解する一次水溶液を製造し、前記製造した一次水溶液を使用時まで貯蔵しておく一次水溶液製造工程と、
水溶性高分子水溶液の使用時に前記貯蔵している一時水溶液を希釈倍率2〜30倍の二次水溶液に希釈して使用に供する二次水溶液製造工程と、
を有することを特徴とする水溶性高分子の溶解方法。 - 請求項1乃至3の何れか1項に記載する溶解方法で溶解した二次水溶液を、高分子凝集剤又は製紙用歩留り向上剤に用いる二次水溶液の使用方法。
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JP5731089B1 (ja) * | 2015-01-14 | 2015-06-10 | 巴工業株式会社 | 高分子凝集剤混合溶解システム及び高分子凝集剤の混合溶解方法 |
JP6744589B2 (ja) * | 2018-07-13 | 2020-08-19 | 荒川化学工業株式会社 | 製紙用歩留剤の希釈液の製造方法 |
JP7476633B2 (ja) | 2020-04-09 | 2024-05-01 | 栗田工業株式会社 | 高分子凝集剤の溶解システム |
Citations (11)
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JPH044004A (ja) * | 1990-04-19 | 1992-01-08 | Fuji Electric Co Ltd | 有機凝集剤の連続供給装置 |
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JP2006175427A (ja) * | 2004-11-25 | 2006-07-06 | Daiyanitorikkusu Kk | 高分子凝集剤を用いた汚泥の凝集脱水処理方法及び廃水の凝集沈殿処理方法 |
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JPS6118408A (ja) * | 1984-04-30 | 1986-01-27 | アライド コロイズ リミテイド | 懸濁液の凝集方法 |
JPH044004A (ja) * | 1990-04-19 | 1992-01-08 | Fuji Electric Co Ltd | 有機凝集剤の連続供給装置 |
JPH10195203A (ja) * | 1997-01-07 | 1998-07-28 | Hymo Corp | 高分子水溶液の製造法 |
JP2000126509A (ja) * | 1998-10-26 | 2000-05-09 | Sumitomo Chem Co Ltd | 高分子凝集剤の溶解方法 |
JP2000288555A (ja) * | 1999-04-05 | 2000-10-17 | Ebara Corp | 上水処理方法 |
JP2001213968A (ja) * | 2000-02-02 | 2001-08-07 | Kurita Water Ind Ltd | 水溶性ポリマーの溶解方法及び溶解装置 |
JP2003001086A (ja) * | 2001-06-20 | 2003-01-07 | Kurita Water Ind Ltd | 薬剤溶解供給装置 |
JP2003164742A (ja) * | 2001-11-30 | 2003-06-10 | Kyushu Kankyo Setsubi:Kk | 溶解装置 |
JP2006175427A (ja) * | 2004-11-25 | 2006-07-06 | Daiyanitorikkusu Kk | 高分子凝集剤を用いた汚泥の凝集脱水処理方法及び廃水の凝集沈殿処理方法 |
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JP2008208494A (ja) * | 2007-02-28 | 2008-09-11 | Hymo Corp | 製紙方法 |
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CN102176960A (zh) | 2011-09-07 |
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