JPH01139130A - Method for desalting and concentrating surface active agent solution - Google Patents
Method for desalting and concentrating surface active agent solutionInfo
- Publication number
- JPH01139130A JPH01139130A JP62294267A JP29426787A JPH01139130A JP H01139130 A JPH01139130 A JP H01139130A JP 62294267 A JP62294267 A JP 62294267A JP 29426787 A JP29426787 A JP 29426787A JP H01139130 A JPH01139130 A JP H01139130A
- Authority
- JP
- Japan
- Prior art keywords
- surfactant
- active agent
- surface active
- reverse osmosis
- salts
- 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.)
- Pending
Links
- 239000004094 surface-active agent Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000011033 desalting Methods 0.000 title claims abstract description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 44
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 30
- 150000003839 salts Chemical class 0.000 claims abstract description 26
- 239000012528 membrane Substances 0.000 claims abstract description 24
- 239000011780 sodium chloride Substances 0.000 claims abstract description 22
- 238000010612 desalination reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000007865 diluting Methods 0.000 abstract description 3
- 230000008030 elimination Effects 0.000 abstract 2
- 238000003379 elimination reaction Methods 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 30
- 239000004480 active ingredient Substances 0.000 description 8
- 230000004907 flux Effects 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- 239000011550 stock solution Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000003204 osmotic effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 239000000693 micelle Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 235000013162 Cocos nucifera Nutrition 0.000 description 2
- 244000060011 Cocos nucifera Species 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- -1 alkylbenzene sulfonate Chemical class 0.000 description 2
- 239000003093 cationic surfactant Substances 0.000 description 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000000502 dialysis Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000909 electrodialysis Methods 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000002453 shampoo Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229940104261 taurate Drugs 0.000 description 2
- XOAAWQZATWQOTB-UHFFFAOYSA-N taurine Chemical compound NCCS(O)(=O)=O XOAAWQZATWQOTB-UHFFFAOYSA-N 0.000 description 2
- KEQGZUUPPQEDPF-UHFFFAOYSA-N 1,3-dichloro-5,5-dimethylimidazolidine-2,4-dione Chemical compound CC1(C)N(Cl)C(=O)N(Cl)C1=O KEQGZUUPPQEDPF-UHFFFAOYSA-N 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical class C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 125000005211 alkyl trimethyl ammonium group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- XTHPWXDJESJLNJ-UHFFFAOYSA-N chlorosulfonic acid Substances OS(Cl)(=O)=O XTHPWXDJESJLNJ-UHFFFAOYSA-N 0.000 description 1
- 238000004440 column chromatography Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 229940094506 lauryl betaine Drugs 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229940050176 methyl chloride Drugs 0.000 description 1
- DVEKCXOJTLDBFE-UHFFFAOYSA-N n-dodecyl-n,n-dimethylglycinate Chemical compound CCCCCCCCCCCC[N+](C)(C)CC([O-])=O DVEKCXOJTLDBFE-UHFFFAOYSA-N 0.000 description 1
- 239000012454 non-polar solvent Substances 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- FDRCDNZGSXJAFP-UHFFFAOYSA-M sodium chloroacetate Chemical compound [Na+].[O-]C(=O)CCl FDRCDNZGSXJAFP-UHFFFAOYSA-M 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- FDDDEECHVMSUSB-UHFFFAOYSA-N sulfanilamide Chemical compound NC1=CC=C(S(N)(=O)=O)C=C1 FDDDEECHVMSUSB-UHFFFAOYSA-N 0.000 description 1
- 229940124530 sulfonamide Drugs 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は界面活性剤溶液の脱塩濃縮法に関し、詳しくは
界面活性剤の製造に際して生成する無機塩類を含有する
界面活性剤溶液から逆浸透法によって無機塩類を水と共
に除去する方法に関するものである。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a method for desalting and concentrating a surfactant solution, and more specifically, a method for reverse osmosis from a surfactant solution containing inorganic salts produced during the production of a surfactant. The present invention relates to a method for removing inorganic salts together with water by a method.
界面活性剤を製造する際に目的とする界面活性剤と共に
無機塩類を副生ずる場合が多く、また未反応原料として
無機塩類が含まれる場合も多い。When producing surfactants, inorganic salts are often produced as by-products along with the target surfactant, and inorganic salts are often included as unreacted raw materials.
例えば、アニオン界面活性剤に含まれる無機塩類として
長鎖アルコールまたはこれのエチレンオキシド付加物と
クロルスルホン酸、スルファミンチル塩を得る場合の硫
酸ナトリウムや塩化ナトリウム、アルキルベンゼンと硫
酸または無水（Ｉｉ！酸との反応によりアルキルベンゼ
ンスルホン酸塩を得つリン虐ナトリウムを得る場合の塩
化ナトリウムなどがあげられ、また、両性界面活性剤と
してアルキルベタインまたはイミダゾリニウムペタイン
を高級アミンまたはアルキルイミダシリンとモノクロル
酢酸ナトリウムとの反応により得る場合の塩化ナトリウ
ム、さらに、カチオン界面活性剤としてアルキルトリメ
チルアンモニウムクロリドを高級アルキルアミンと塩化
メチルとの反応で得る場合の塩化ナトリウム、などがあ
げられる。For example, as inorganic salts contained in anionic surfactants, long-chain alcohols or their ethylene oxide adducts and chlorosulfonic acid, sodium sulfate or sodium chloride in the case of obtaining sulfamine chill salts, alkylbenzenes and sulfuric acid or anhydrous (Ii! acids) Sodium chloride is used to obtain an alkylbenzene sulfonate and sodium phosphate by reaction, and as an amphoteric surfactant, alkyl betaine or imidazolinium petaine is used with a higher amine or alkylimidacillin and sodium monochloroacetate. Examples include sodium chloride when obtained by reacting with a cationic surfactant, and sodium chloride when an alkyltrimethylammonium chloride is obtained as a cationic surfactant by reacting a higher alkylamine with methyl chloride.
これらの無機塩類は従来の製造法では製品中に１〜１５
重１％含まれるので、界面活性剤を使用する際に好まし
からざる影響を与えている。例えば、粘度の増大や有効
成分の塩析が生じるために有効成分の高濃度化が妨げら
れている。また、界面活性剤を各種用途に用いる場合に
配合系の安定性を低下させたり、多量に使用することを
困難にしている。In conventional manufacturing methods, these inorganic salts are contained in the product at a concentration of 1 to 15
Since it contains 1% by weight, it has an undesirable effect on the use of surfactants. For example, increases in viscosity and salting out of the active ingredient prevent the concentration of the active ingredient from becoming high. Moreover, when surfactants are used for various purposes, they reduce the stability of blended systems and make it difficult to use them in large amounts.
これらの無機塩類を実用上問題のない含量にまで効率よ
く除去することが出来れば、界面活性剤の用途を大きく
拡大することが期待される。そこで、無機塩類の除去に
ついて従来から各種方法によって検討されているが、い
まだ有効な方法は知られていない。If these inorganic salts can be efficiently removed to a level that does not cause any practical problems, it is expected that the uses of surfactants will be greatly expanded. Therefore, although various methods have been studied for the removal of inorganic salts, no effective method is known yet.
界面活性剤はその性質から、極性および非極性溶媒双方
に親和性をもち、乳化を起こすので、再結晶などの溶解
度の差を利用するｆ＃製法の対象となり得る界面活性剤
は限られている。また、溶媒抽出法による分離精製は、
溶媒の除去操作、溶媒の残存、有効成分の損失などとい
った問題があり実用的でない。さらに、蒸留などによる
精製は界面活性剤そのものが高沸点物であるために熱劣
化を避けることが難かしい。Due to their nature, surfactants have an affinity for both polar and non-polar solvents and cause emulsification, so there are a limited number of surfactants that can be used in f# manufacturing methods that utilize differences in solubility such as recrystallization. . In addition, separation and purification by solvent extraction method is
It is not practical due to problems such as removal of the solvent, residual solvent, and loss of active ingredients. Furthermore, when purifying by distillation or the like, it is difficult to avoid thermal deterioration because the surfactant itself has a high boiling point.
近年、吸着剤やイオン交換樹脂を用いるカラムクロマト
グラフィーなどによる脱塩Ｍ製法も検討されているが、
無機塩類含量を低下した界面活性剤を効率良く大量に生
産することは工ｉ的見地において問題がある。In recent years, desalting M production methods using column chromatography using adsorbents and ion exchange resins have also been considered.
From an engineering standpoint, it is problematic to efficiently produce in large quantities a surfactant with a reduced content of inorganic salts.
透析法および電気透析法を利用する無機塩類の効率的な
除去方法についても検討されている。透析法については
、特開昭５５−６２９９６号公報、特１ｊＦ１１ｊ８６
０−１９３９５４号公報、特開昭６１−３３２２２号公
報などに開示されている。いずれの場合においても、水
あるいは低濃度塩溶液が膜を介して界面活性剤溶液側へ
侵入し、有効成分が希釈されてしまっている。界面活性
剤溶液側に圧力をＪＪＯえることによって、侵入する水
を少なくすることは可能であるが、無くすることはでき
ていない。そのために、実用的な濃度とするためには濃
縮操作が必要になっている。電気透析法については特開
昭６１−３３２２２号公報に開示されており、界面活性
剤溶液が希釈されることは少なく、ヮＡ縮を行う必要性
は低いが電力費がかかりコスト的に問題がある。Efficient methods for removing inorganic salts using dialysis and electrodialysis are also being investigated. Regarding the dialysis method, see Japanese Patent Application Laid-Open No. 55-62996, Special Patent No. 1jF11j86.
It is disclosed in JP-A No. 0-193954, Japanese Unexamined Patent Publication No. 61-33222, and the like. In either case, water or a low concentration salt solution enters the surfactant solution through the membrane, diluting the active ingredient. Although it is possible to reduce the amount of water entering by applying pressure to the surfactant solution side, it has not been possible to eliminate it. Therefore, a concentration operation is required to achieve a practical concentration. The electrodialysis method is disclosed in Japanese Patent Application Laid-Open No. 61-33222, and although the surfactant solution is rarely diluted and there is little need for ヮA contraction, it is expensive due to the electricity cost. be.
〔発明が１弄決しようとする問題点〕
無機塩類を含む界面活性剤溶液から、有効成分の希釈を
起こすことなく、効率良く無機塩類を除去する方法の開
発が望まれている。そして、界面活性剤溶液から無機塩
類を除去すると、その界面活性剤溶液の粘度が低下する
ので、界面活性剤溶液の高濃度化をはかることが可能と
なる。したがって、脱塩と同時に濃縮を効率的に行う方
法の開発が期待されている。[Problems to be solved by the invention] It is desired to develop a method for efficiently removing inorganic salts from a surfactant solution containing inorganic salts without diluting the active ingredients. When inorganic salts are removed from the surfactant solution, the viscosity of the surfactant solution decreases, making it possible to increase the concentration of the surfactant solution. Therefore, it is expected to develop a method for efficiently concentrating at the same time as desalting.
本発明は、無機塩類を含有する界面活性剤溶液の脱塩と
濃縮とを同時に行なう方法を提供することを目的とする
ものである。An object of the present invention is to provide a method for simultaneously desalting and concentrating a surfactant solution containing inorganic salts.
本発明は、無機塩類含有界面活性剤溶液について塩化す
ｌ−ＩＪウム排排除率９御〜５０に行うことを特徴とす
る界面活性剤溶液の脱塩濃縮法である。The present invention is a method for desalting and concentrating a surfactant solution, which is characterized in that it is carried out to achieve an exclusion rate of l-IJ chloride of 9 to 50 for a surfactant solution containing inorganic salts.
本発明における塩化ナトリウム排除率９０〜５０チのル
ーズ逆浸透膜を用いる逆浸透法（以下、ルーズ逆浸透法
と称す）は、通常の逆浸透法より低い圧力（５〜５０＃
／ｃｒｌ）において高い透過流束が得られる方法である
。膜分離法の中では操作条件、分画分子量などから従来
の逆浸透法と限外濾過法の中間に位置する方法である。In the present invention, the reverse osmosis method using a loose reverse osmosis membrane with a sodium chloride rejection rate of 90 to 50 cm (hereinafter referred to as loose reverse osmosis method) uses a lower pressure (5 to 50 cm) than the normal reverse osmosis method.
/crl) is a method that can obtain a high permeation flux. Among membrane separation methods, this method is located between the conventional reverse osmosis method and ultrafiltration method in terms of operating conditions, molecular weight cutoff, etc.
なお、塩化ナトリウム排除率は塩化ナトリウム含量５０
０ｐｐｍの水溶液を７，５辞／ｃｄ１ ２５℃の条件で
処理したときに排除される塩化ナトリウムの係を示すも
のである。Note that the sodium chloride exclusion rate is based on a sodium chloride content of 50
This shows the amount of sodium chloride that is eliminated when a 0 ppm aqueous solution is treated at 7.5 g/cd1 at 25°C.
本発明においては塩化ナトリウム排除率９０〜５０チの
ルーズ逆浸透膜を用いる。塩化ナトリウム排除率が９０
％より高い膜を用いると、塩化ナトリウムが透過しにく
いために脱塩の効率が悪いだけでなく、高い透過流束を
得にくい、運転に高圧を反する、などの不利な点が多い
。また、塩化ナトリウム排除率が５０％より低い膜を用
いると、低圧下の運転、高透過流束および高説基準を得
ることが可能であるが、界面活性剤の損失が多く不適当
である。In the present invention, a loose reverse osmosis membrane with a sodium chloride rejection rate of 90 to 50 inches is used. Sodium chloride rejection rate is 90
If a membrane with a temperature higher than 20% is used, not only is the efficiency of desalination poor because it is difficult for sodium chloride to permeate, but there are many disadvantages such as difficulty in obtaining a high permeation flux and the need for high pressure operation. Furthermore, using a membrane with a sodium chloride rejection rate lower than 50% allows operation under low pressure, high permeation flux, and high standards, but the loss of surfactant is large and unsuitable.
本発明において用いる膜としては、ポリアミド系、ポリ
エーテル系、セルロースアセテート系などの膜があり、
例えば、東し■製ＵＴＣ−２０ＨＦ（塩化ナトリウム排
除率７０％）、ＵＴＣ−４０ＨＦ（同 ９０チ）、日東
電気工業■製ＮＴＲ−７２５０（同 ７０％）、フィル
ムチック■展ＮＦ−４０（同 ５５チ）、東洋紡績■製
ＨＲ５３３０（同 ９０チ）などがあげられる。The membranes used in the present invention include polyamide-based, polyether-based, cellulose acetate-based films, etc.
For example, UTC-20HF (70% sodium chloride rejection rate) manufactured by Toshi, UTC-40HF (90% sodium chloride), NTR-7250 (70% sodium chloride) manufactured by Nitto Electric, and NF-40 (sodium rejection rate 70%) manufactured by Nitto Electric Industries, Ltd. Examples include HR5330 (90 inches) manufactured by Toyobo Co., Ltd.
また、用いる膜の形態はスパイラル型、フォローファイ
バー型などがあるが、いずれの形態のものでも用いるこ
とができる。Further, the membrane used may have a spiral type, a followed fiber type, etc., but any type can be used.
本発明におけるルーズ逆浸透法は、界面活性剤溶液が界
面活性剤を臨界ミセル濃度（ＣＭＣ）以上に含んでいる
ことが好ましい。ＣＭＣより低い場合には膜分離により
界面活性剤をかなり大きく損失することがあるので、好
ましくない。その理由として、ＣＭＣより低いときには
界面活性剤が単分子的に存在しておシ、逆にＣＭＣ以上
のときには界面活性剤分子が会合またはミセルを形成し
て、膜分離に対する見掛けの分子量が増大しているた′
めと考えられる。したがって、なるべく高濃度の界面活
性剤溶液についてルーズ逆浸透法を行うことが望まれる
。通常の界面活性剤のＣＭＣは０．０１〜０．１％であ
るので、十分にミセルを形成させて膜分離における損失
を少なくする点から、本発明におけるルーズ逆浸透法は
界面活性剤を１重１％以上含む溶液について行うことが
好ましい。In the loose reverse osmosis method of the present invention, it is preferable that the surfactant solution contains surfactant at a critical micelle concentration (CMC) or higher. If it is lower than the CMC, the surfactant may be considerably lost due to membrane separation, which is not preferable. The reason for this is that when it is lower than the CMC, the surfactant exists as a single molecule, whereas when it is higher than the CMC, the surfactant molecules associate or form micelles, increasing the apparent molecular weight for membrane separation. It was
It is thought that Therefore, it is desirable to perform the loose reverse osmosis method on a surfactant solution with as high a concentration as possible. Since the CMC of a normal surfactant is 0.01 to 0.1%, the loose reverse osmosis method of the present invention uses a surfactant of 1% in order to sufficiently form micelles and reduce loss during membrane separation. It is preferable to use a solution containing 1% or more by weight.
本発明における界面活性剤としてはほとんど全ての界面
活性剤をあげることができ、特に限定されるものではな
い。界面活性剤のＨＬＢおよびＣＭＣにより異なるが、
ルーズ逆浸透膜の分画分子量が数百のオーダーであるた
め、分子量が２５０よシ小さい界面活性剤の場合には損
失が多くなり適当でない。The surfactant in the present invention can include almost all surfactants, and is not particularly limited. Although it varies depending on the HLB and CMC of the surfactant,
Since the molecular weight cutoff of loose reverse osmosis membranes is on the order of several hundred, surfactants with molecular weights smaller than 250 are not suitable because they cause a large amount of loss.
本発明のルーズ逆浸透法を行う温度としては、損失を低
くおさえるためには低温の方が望ましいが、温度の低下
に伴なって透過流束が低下し、また界面活性剤溶液が結
晶析出、固化などの支障を生ずる危険性があるので、こ
れらの問題の生じない範囲および膜の耐熱性を考慮して
決められる０また、ルーズ逆浸透法を行う操作圧力は５
〜５０ Ｈ／ ｃｎｌが好ましく、５＃／肩より低い圧
力では処理液の浸透圧との差が小さいために十分な透過
流束が得られず、処理時間が長くなったり、十分な濃度
まで濃縮ができないことがあり好ましくない。５０ ｋ
ｇ／ ｔｒｉより高い圧力では高透過流束が得られ、高
濃度までの濃縮が可能であるが、膜の寿命や装置全体の
耐圧性などの点から好ましくない。As for the temperature at which the loose reverse osmosis method of the present invention is carried out, a lower temperature is preferable in order to keep losses low, but as the temperature decreases, the permeation flux decreases, and the surfactant solution crystallizes out. Since there is a risk of problems such as solidification, the operating pressure for loose reverse osmosis is determined by considering the range where these problems do not occur and the heat resistance of the membrane.
~50 H/cnl is preferable, and if the pressure is lower than 5#/shoulder, the difference with the osmotic pressure of the treatment solution is small, so sufficient permeation flux cannot be obtained, the treatment time becomes longer, or the treatment solution cannot be concentrated to a sufficient concentration. This is not desirable as it may not be possible to do so. 50k
At a pressure higher than g/tri, a high permeation flux is obtained and concentration to a high concentration is possible, but it is not preferable from the viewpoint of the life of the membrane and the pressure resistance of the entire device.
ルーズ逆浸透法にかける界面活性剤溶液のｐＨは界面活
性剤の性質や目的と同時にルーズ逆浸透膜の耐久性など
を考慮して決められるが、ｐＨ７近くが女子ましい。The pH of the surfactant solution to be applied to the loose reverse osmosis method is determined by taking into consideration the properties and purpose of the surfactant as well as the durability of the loose reverse osmosis membrane, but a pH close to 7 is desirable.
本発明のルーズ逆浸透法は回分式、循１式、いずれの方
式でも行うことができる。The loose reverse osmosis method of the present invention can be carried out by either a batch method or a circulation method.
ルーズ逆浸透法によって界面活性剤！８液のａ縮が進む
と、溶液の浸透圧が増大してくるので、ルーズ逆浸透膜
と界面活性剤溶液の組合せで生ずる浸透圧と操作圧力が
つり合う点までａ棒することができる。また、濃縮によ
って界面活性剤溶液の粘［ｙが増大してくるので、操作
不可能な粘度になるまで濃縮することができる。操作不
可能な粘度となる界面活性剤の濃度は界面活性剤の種類
によって異なるが、例えば、ラウリルベタインでは４２
チ、ヤシアルキロイルメチルタウリン酸ナトリウムでは
３９％まで操作可能でめった。Surfactant by loose reverse osmosis! As the a-condensation of the liquid progresses, the osmotic pressure of the solution increases, so it is possible to increase the osmotic pressure to the point where the operating pressure is balanced with the osmotic pressure generated by the combination of the loose reverse osmosis membrane and the surfactant solution. Furthermore, since the viscosity [y] of the surfactant solution increases due to concentration, it is possible to concentrate the surfactant solution until it reaches an inoperable viscosity. The concentration of surfactant that results in an unmanageable viscosity varies depending on the type of surfactant, but for example, lauryl betaine has a concentration of 42
H. With sodium coconut alkylmethyl taurate, it was possible to operate up to 39%, but rarely.
界面活性剤溶液の無機塩類含量はルーズ逆浸透法を繰り
返す程低下し、はぼ無しとすることができるが、界面活
性剤の損失との関係から使用目的に合った含量にまで脱
塩するようにする。The content of inorganic salts in the surfactant solution decreases as the loose reverse osmosis method is repeated, and it can be completely eliminated, but from the perspective of loss of surfactant, it is recommended to desalinate the solution to a level that suits the purpose of use. Make it.
これらの条件を満たす形でルーズ逆浸透法を行うことが
できるが、ルーズ逆浸透膜の寿猪を長く保たせるために
、低温、低圧、中性（ｐＨ７位）で実施することが望ま
しい。Although loose reverse osmosis can be carried out in a form that satisfies these conditions, in order to maintain the longevity of the loose reverse osmosis membrane for a long time, it is desirable to carry out the process at low temperature, low pressure, and neutrality (pH around 7).
本発明によって界面活性剤溶液の脱塩と濃縮を比較的容
易に行うことができ、無機塩類含量が低くてしかも有効
成分濃度が高い界面活性剤溶液を得ることができる。According to the present invention, a surfactant solution can be desalted and concentrated relatively easily, and a surfactant solution with a low content of inorganic salts and a high concentration of active ingredients can be obtained.
界面活性剤溶液の高濃度化によシ取扱いが簡便になるだ
けでなく、配合利用する範囲の拡大が期待される。また
、低塩化によって、低温保存時の塩類の析出がなくなり
保存安定性が改良されるだけでなく、シャンプー、ボデ
ィーシャンプーなどへの配合の際に、塩類含量が高いた
めにみられろ過度の増粘、粘度のバラツキ、成分の析出
、配合系の安定性の悪さなどといった問題がなくなり、
より巾広い用途で、またより多い配合率で界面活性剤を
用いることが期待できる。Increasing the concentration of the surfactant solution not only makes it easier to handle, but is also expected to expand the scope of its use. In addition, low chloride not only improves storage stability by eliminating the precipitation of salts during low-temperature storage, but also prevents excessive increase in salt content when compounded into shampoos, body shampoos, etc. Problems such as viscosity, variation in viscosity, precipitation of ingredients, and poor stability of the compounding system are eliminated.
It is expected that surfactants will be used in a wider range of applications and at higher compounding ratios.
本発明を実施例により詳細に説明する。 The present invention will be explained in detail by examples.
実施例１
ヤシアルキロイルメチルタウリン酸ナトリウム溶液（有
効成分含量２６．８％、塩化ナトリウム含ｆｔｓ、９％
）８０＃にイオン交換水１００ｋｇを加えて希釈原液と
した。この希釈原液を、塩化ナトリウム排除率７０チの
ルーズ逆浸透膜（東し＠製ＵＴＣ−２０ＨＦ）のスパイ
ラル型モジュールを備えた東しエンジニアリング■製Ｒ
Ｏパイロット装置（膜面積１５ｉ）にて脱塩、濃縮した
。入口圧力２０館／ｃ！Ｇ、温度２５℃、濃縮液を１０
ｔ／馴の流速で原液側に戻す条件で、透過液が１２５〜
になるまで７０分間処理を行った。Example 1 Sodium coconut alkylmethyl taurate solution (active ingredient content 26.8%, sodium chloride content, 9%
) 80# and 100 kg of ion exchange water was added to prepare a diluted stock solution. This diluted stock solution was mixed with R manufactured by Toshi Engineering Corporation, which is equipped with a spiral type module of a loose reverse osmosis membrane (UTC-20HF manufactured by Toshi @) with a sodium chloride rejection rate of 70%.
Desalting and concentration were performed using an O pilot device (membrane area: 15 i). Inlet pressure 20/c! G, temperature 25℃, concentrate 10
Under the condition that the permeate is returned to the stock solution side at a flow rate of 125~
The treatment was carried out for 70 minutes until the
界面活性剤原液（希釈前）の性状を第１表に、また、ル
ーズ逆浸透性処理の結果を第２表に示した。The properties of the surfactant stock solution (before dilution) are shown in Table 1, and the results of the loose reverse osmosis treatment are shown in Table 2.
実施例２
ルーズ逆浸透膜として塩化ナトリウム排除率９０％の東
し＠！！！ＵＴＣ−４０ＨＦを用いる以外は実施例１と
同様に処理を行った。Example 2 A loose reverse osmosis membrane with a sodium chloride rejection rate of 90%! ! ! The treatment was carried out in the same manner as in Example 1 except that UTC-40HF was used.
得られた結果を第２表にまとめて示した。The results obtained are summarized in Table 2.
実施例３
ルーズ逆浸透膜として塩化ナトリウム排除率５５係のフ
ィルムチック■製ＮＦ−４０を用いる以外は実施例１と
同様に処理を行った。Example 3 The treatment was carried out in the same manner as in Example 1, except that NF-40 manufactured by Filmtic ■ with a sodium chloride rejection rate of 55 was used as the loose reverse osmosis membrane.
得られた結果を第２表にまとめて示した。The results obtained are summarized in Table 2.
実施例４および５
界面活性剤原液の希釈度合を変える以外は実施例１と同
様に処理を行った。Examples 4 and 5 The treatment was carried out in the same manner as in Example 1 except that the degree of dilution of the surfactant stock solution was changed.
得られた結果を第２表にまとめて示した。The results obtained are summarized in Table 2.
実施例６〜９
界面活性剤の種類を変える以外は実施例１と同様に処理
を行った。Examples 6 to 9 The treatment was carried out in the same manner as in Example 1 except that the type of surfactant was changed.
得られた結果を第２表にまとめて示した。The results obtained are summarized in Table 2.
なお、第２表の生産能力（ｔ／Ｍ）は、１ケ月２５日稼
動で１日２４時間運転の場合に有効成分３０％の溶液を
生産する能力を示している。The production capacity (t/M) in Table 2 indicates the ability to produce a solution containing 30% of the active ingredient when operating 25 days a month and 24 hours a day.
第２表の結果から、本発明により界面活性剤溶特許出願
人 日本油脂株式会社From the results in Table 2, it can be concluded that the surfactant-solubilized patent applicant of the present invention is Nippon Oil & Fats Corporation.
Claims (1)
ム排除率９０〜５０％のルーズ逆浸透膜を用いる逆浸透
法により脱塩と濃縮を同時に行うことを特徴とする界面
活性剤溶液の脱塩濃縮法。 ２ 界面活性剤溶液が界面活性剤を１重量％以上含む溶
液である特許請求の範囲第１項記載の界面活性剤溶液の
脱塩濃縮法。 ３ 界面活性剤が分子量２５０以上の界面活性剤である
特許請求の範囲第１項または第２項に記載の界面活性剤
溶液の脱塩濃縮法。[Claims] 1. A surfactant solution containing inorganic salts, which is characterized in that desalination and concentration are simultaneously performed by a reverse osmosis method using a loose reverse osmosis membrane with a sodium chloride rejection rate of 90 to 50%. desalination concentration method. 2. The method for desalting and concentrating a surfactant solution according to claim 1, wherein the surfactant solution is a solution containing 1% by weight or more of a surfactant. 3. The method for desalting and concentrating a surfactant solution according to claim 1 or 2, wherein the surfactant has a molecular weight of 250 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62294267A JPH01139130A (en) | 1987-11-26 | 1987-11-26 | Method for desalting and concentrating surface active agent solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62294267A JPH01139130A (en) | 1987-11-26 | 1987-11-26 | Method for desalting and concentrating surface active agent solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01139130A true JPH01139130A (en) | 1989-05-31 |
Family
ID=17805503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62294267A Pending JPH01139130A (en) | 1987-11-26 | 1987-11-26 | Method for desalting and concentrating surface active agent solution |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01139130A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023506213A (en) * | 2020-02-28 | 2023-02-15 | ザ プロクター アンド ギャンブル カンパニー | How to remove chemical contaminants |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59156402A (en) * | 1983-02-28 | 1984-09-05 | Japan Organo Co Ltd | Concentration of organic substance by reverse osmosis membrane |
| JPS59179188A (en) * | 1983-03-31 | 1984-10-11 | Teijin Ltd | Membrane separation and treatment of aqueous solution containing nonionic surface active agent |
-
1987
- 1987-11-26 JP JP62294267A patent/JPH01139130A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59156402A (en) * | 1983-02-28 | 1984-09-05 | Japan Organo Co Ltd | Concentration of organic substance by reverse osmosis membrane |
| JPS59179188A (en) * | 1983-03-31 | 1984-10-11 | Teijin Ltd | Membrane separation and treatment of aqueous solution containing nonionic surface active agent |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023506213A (en) * | 2020-02-28 | 2023-02-15 | ザ プロクター アンド ギャンブル カンパニー | How to remove chemical contaminants |
| US11926534B2 (en) | 2020-02-28 | 2024-03-12 | The Procter & Gamble Company | Method of using nanofiltration and reverse osmosis to remove chemical contaminants |
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