TW201546129A - Oil-water separation method - Google Patents
Oil-water separation method Download PDFInfo
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- TW201546129A TW201546129A TW104117289A TW104117289A TW201546129A TW 201546129 A TW201546129 A TW 201546129A TW 104117289 A TW104117289 A TW 104117289A TW 104117289 A TW104117289 A TW 104117289A TW 201546129 A TW201546129 A TW 201546129A
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- polyoxyethylene
- coal tar
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 238000000926 separation method Methods 0.000 title claims abstract description 37
- 239000011280 coal tar Substances 0.000 claims abstract description 41
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 claims abstract description 38
- 229920001400 block copolymer Polymers 0.000 claims abstract description 37
- 150000003839 salts Chemical class 0.000 claims description 16
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 claims description 13
- 239000011269 tar Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- 239000003153 chemical reaction reagent Substances 0.000 description 7
- 239000000839 emulsion Substances 0.000 description 7
- 239000004094 surface-active agent Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 125000001165 hydrophobic group Chemical group 0.000 description 6
- 238000005227 gel permeation chromatography Methods 0.000 description 4
- 239000008346 aqueous phase Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- -1 polyoxyethylene Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- RZCXRDBYLLLRKH-UHFFFAOYSA-N 2-(2-ethylhexyl)-2-sulfobutanedioic acid Chemical compound CCCCC(CC)CC(S(O)(=O)=O)(C(O)=O)CC(O)=O RZCXRDBYLLLRKH-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 235000019329 dioctyl sodium sulphosuccinate Nutrition 0.000 description 1
- YHAIUSTWZPMYGG-UHFFFAOYSA-L disodium;2,2-dioctyl-3-sulfobutanedioate Chemical compound [Na+].[Na+].CCCCCCCCC(C([O-])=O)(C(C([O-])=O)S(O)(=O)=O)CCCCCCCC YHAIUSTWZPMYGG-UHFFFAOYSA-L 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- UGJCNRLBGKEGEH-UHFFFAOYSA-N sodium-binding benzofuran isophthalate Chemical compound COC1=CC=2C=C(C=3C(=CC(=CC=3)C(O)=O)C(O)=O)OC=2C=C1N(CCOCC1)CCOCCOCCN1C(C(=CC=1C=2)OC)=CC=1OC=2C1=CC=C(C(O)=O)C=C1C(O)=O UGJCNRLBGKEGEH-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C1/00—Working-up tar
- C10C1/04—Working-up tar by distillation
- C10C1/06—Removal of water
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Materials Engineering (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Description
本發明是有關於一種煤焦油的油水分離方法。更詳細而言， 是有關於將煤焦油與水分離的方法。The invention relates to a method for separating oil and water from coal tar. In more detail, there is a method of separating coal tar from water.
在自含有水的煤焦油分離水時或將來自含有煤焦油的水的煤焦油分離時，通常使用離心分離法（ 例如參照專利文獻1、專利文獻2）。然而， 在含有水的煤焦油或含有煤焦油的水中， 由於煤焦油與水形成乳液， 因此難以將所述成分進行分離。When separating water from coal tar containing water or separating coal tar from water containing coal tar, a centrifugal separation method is generally used (for example, refer to Patent Document 1 and Patent Document 2). However, in coal tar containing water or water containing coal tar, since coal tar forms an emulsion with water, it is difficult to separate the components.
因此， 先前提出了添加界面活性劑來破壞乳液的方法（例如參照專利文獻3～ 專利文獻6）。在所述先前的油水分離方法中， 作為界面活性劑， 使用烷基烯丙基磺酸鹽或高級醇硫酸酯鹽等陰離子系界面活性劑（ 專利文獻4）、以四級銨鹽或咪唑衍生物為主成分的陽離子系界面活性劑（ 專利文獻5）、聚氧乙烯烷基醚硫酸酯鹽（ 專利文獻6） 等。Therefore, a method of adding a surfactant to destroy the emulsion has been proposed (for example, refer to Patent Document 3 to Patent Document 6). In the above-described oil-water separation method, as the surfactant, an anionic surfactant such as an alkylallylsulfonate or a higher alcohol sulfate is used (Patent Document 4), and a tetra-ammonium salt or an imidazole is used. A cationic surfactant (Patent Document 5) containing a main component, a polyoxyethylene alkyl ether sulfate salt (Patent Document 6), and the like.
另外，亦提出了藉由添加比重為1.04 以上的煤焦油蒸餾餾分來代替界面活性劑， 而謀求油水分離的處理效率提高的煤焦油的脫水方法（ 參照專利文獻7）。現有技術文獻專利文獻In addition, a coal tar dehydration method in which the treatment efficiency of oil-water separation is improved by adding a coal tar distillation fraction having a specific gravity of 1.04 or more instead of the surfactant is proposed (refer to Patent Document 7). Prior art document patent document
專利文獻1： 日本專利特開平6-33068 號公報專利文獻2： 日本專利特開2011-78951 號公報專利文獻3： 日本專利特開昭61-255990 號公報專利文獻4： 日本專利特開昭51-96785 號公報專利文獻5： 日本專利特開昭54-102305 號公報專利文獻6： 日本專利特開昭57-177088 號公報專利文獻7： 日本專利特開2002-38162 號公報Patent Document 1: Japanese Patent Laid-Open No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei.
本發明的油水分離方法是將水與煤焦油分離的油水分離方法， 對含有水的煤焦油或含有煤焦油的水， 添加聚氧乙烯-聚氧丙烯嵌段共聚物。The oil-water separation method of the present invention is an oil-water separation method for separating water from coal tar, and a polyoxyethylene-polyoxypropylene block copolymer is added to coal tar containing water or water containing coal tar.
在用以實施本發明的形態的油水分離方法中，可使用疏水基的數量平均分子量為2000 以上的聚氧乙烯-聚氧丙烯嵌段共聚物。此處所謂的「疏水基的數量平均分子量」，是藉由凝膠滲透層析法（Gel Permeation Chromatography，GPC） 測定的值。另外，作為所述聚氧乙烯-聚氧丙烯嵌段共聚物，例如可使用親水親脂均衡（Hydrophile-Lipophile Balance，HLB） 值為7 以上者。而且， 在用以實施本發明的形態的油水分離方法中， 可與所述聚氧乙烯-聚氧丙烯嵌段共聚物一起添加二烷基磺基琥珀酸及/或其鹽。In the oil-water separation method for carrying out the aspect of the present invention, a polyoxyethylene-polyoxypropylene block copolymer having a number average molecular weight of a hydrophobic group of 2,000 or more can be used. The "number average molecular weight of the hydrophobic group" referred to herein is a value measured by gel permeation chromatography (GPC). Further, as the polyoxyethylene-polyoxypropylene block copolymer, for example, a Hydrophile-Lipophile Balance (HLB) value of 7 or more can be used. Further, in the oil-water separation method for carrying out the aspect of the present invention, dialkyl sulfosuccinic acid and/or a salt thereof may be added together with the polyoxyethylene-polyoxypropylene block copolymer.
然而，使用界面活性劑的先前的油水分離方法中，水與煤焦油的分離的程度不充分， 例如在為含有水的煤焦油時， 要求進一步降低含水率。另一方面， 關於使用煤焦油蒸餾餾分的專利文獻7 所記載的方法， 由於相對於粗煤焦油而必須混合10 質量%以上的暫時蒸餾而製造的製品（ 蒸餾餾分），因此存在良率降低的課題。However, in the prior oil-water separation method using a surfactant, the degree of separation of water from coal tar is insufficient, and for example, in the case of coal tar containing water, it is required to further reduce the water content. On the other hand, in the method described in Patent Document 7 of the use of the coal tar distillation fraction, it is necessary to mix a product (distilled fraction) produced by temporary distillation of 10% by mass or more with respect to the coarse coal tar, so that the yield is lowered. Question.
因此，用以實施本發明的形態的油水分離方法的主要目的是提供一種水與煤焦油的分離性能優異的煤焦油的油水分離方法。Therefore, the main object of the oil-water separation method for carrying out the embodiment of the present invention is to provide a method for separating oil and water of coal tar which is excellent in separation performance between water and coal tar.
根據用以實施本發明的形態的油水分離方法，使用聚氧乙烯-聚氧丙烯嵌段共聚物， 因此可提高水與煤焦油的分離性能。According to the oil-water separation method for carrying out the aspect of the present invention, the polyoxyethylene-polyoxypropylene block copolymer is used, so that the separation performance of water and coal tar can be improved.
以下， 對用以實施本發明的形態進行詳細的說明。另外，本發明並不限定於以下所說明的實施形態。Hereinafter, embodiments for carrying out the invention will be described in detail. Further, the present invention is not limited to the embodiments described below.
本實施形態的油水分離方法是將水與煤焦油分離的油水分離方法， 對含有水的煤焦油或含有煤焦油的水， 添加聚氧乙烯-聚氧丙烯嵌段共聚物。The oil-water separation method of the present embodiment is a method of separating oil and water from coal tar, and a polyoxyethylene-polyoxypropylene block copolymer is added to coal tar containing water or water containing coal tar.
[聚氧乙烯-聚氧丙烯嵌段共聚物]聚氧乙烯- 聚氧丙烯嵌段共聚物具有作用於形成乳液的界面， 而變為無法維持乳液的狀態的效果。本實施形態的油水分離方法中所用的聚氧乙烯-聚氧丙烯嵌段共聚物的結構並無特別限定， 由於疏水基的分子量大者容易吸附於煤焦油而作用於界面，因此就提高油水分離性能的觀點而言， 較佳為使用疏水基的數量平均分子量為2000 以上者。[Polyoxyethylene-Polyoxypropylene Block Copolymer] The polyoxyethylene-polyoxypropylene block copolymer has an effect of acting on the interface at which the emulsion is formed, and the state of the emulsion cannot be maintained. The structure of the polyoxyethylene-polyoxypropylene block copolymer used in the oil-water separation method of the present embodiment is not particularly limited, and since the molecular weight of the hydrophobic group is easily adsorbed to the coal tar and acts on the interface, the oil-water separation is improved. From the viewpoint of performance, it is preferred to use a hydrophobic group having a number average molecular weight of 2,000 or more.
此處， 聚氧乙烯-聚氧丙烯嵌段共聚物的疏水基的數量平均分子量可藉由凝膠滲透層析法（ Gel PermeationChromatography，GPC） 而測定。Here, the number average molecular weight of the hydrophobic group of the polyoxyethylene-polyoxypropylene block copolymer can be determined by Gel Permeation Chromatography (GPC).
另外，就提高對煤焦油的吸附性的觀點而言，聚氧乙烯-聚氧丙烯嵌段共聚物較佳為分子量大者。具體而言， 較佳為使用數量平均分子量為2500 以上的聚氧乙烯-聚氧丙烯嵌段共聚物，更佳為使用數量平均分子量為10000 以上者。藉此， 可進一步提高油水分離性能。Further, from the viewpoint of improving the adsorption property to coal tar, the polyoxyethylene-polyoxypropylene block copolymer is preferably one having a large molecular weight. Specifically, a polyoxyethylene-polyoxypropylene block copolymer having a number average molecular weight of 2,500 or more is preferably used, and a number average molecular weight of 10,000 or more is more preferably used. Thereby, the oil-water separation performance can be further improved.
聚氧乙烯- 聚氧丙烯嵌段共聚物的親水親脂均衡（Hydrophile-Lipophile Balance，HLB）值並無特別限定， 就提高油水分離性能的觀點而言， 較佳為使用HLB 值為7 以上者。The Hydrophile-Lipophile Balance (HLB) value of the polyoxyethylene-polyoxypropylene block copolymer is not particularly limited, and from the viewpoint of improving the oil-water separation performance, it is preferred to use an HLB value of 7 or more. .
在本實施形態的油水分離方法中，亦可將分子量或結構不同的兩種以上的聚氧乙烯-聚氧丙烯嵌段共聚物加以組合而使用。此時， 可將兩種以上的聚氧乙烯-聚氧丙烯嵌段共聚物混合而添加， 亦可分別分開添加。In the oil-water separation method of the present embodiment, two or more kinds of polyoxyethylene-polyoxypropylene block copolymers having different molecular weights or structures may be used in combination. In this case, two or more kinds of polyoxyethylene-polyoxypropylene block copolymers may be mixed and added, or may be separately added.
[二烷基磺基琥珀酸或其鹽]在本實施形態的油水分離方法中， 亦可與所述的聚氧乙烯-聚氧丙烯嵌段共聚物一起添加其他的界面活性劑。在煤焦油與水的界面， 存在具有妨礙水相或水粒子的合而為一， 而牢固地保持乳液的作用的懸浮固體（Suspended Solid：SS）。另一方面， 聚氧乙烯-聚氧丙烯嵌段共聚物由於對SS 的滲透性低， 因此較佳為與對SS 的滲透性高的界面活性劑併用。[Dialkylsulfosuccinic acid or a salt thereof] In the oil-water separation method of the present embodiment, another surfactant may be added together with the above-mentioned polyoxyethylene-polyoxypropylene block copolymer. At the interface between the coal tar and the water, there is a suspended solid (SS) which has a function of hindering the water phase or the water particles and firmly holding the emulsion. On the other hand, since the polyoxyethylene-polyoxypropylene block copolymer has low permeability to SS, it is preferably used in combination with a surfactant having high permeability to SS.
作為對SS 的滲透性高的界面活性劑， 例如可列舉： 聚氧化烯烷基醚或二烷基磺基琥珀酸（ 鹽） 等， 其中， 較佳為二烷基磺基琥珀酸及其鹽， 特佳為2-乙基己基磺基琥珀酸及其鹽。二烷基磺基琥珀酸（ 鹽）由於對SS 的滲透力強，因此，若將聚氧乙烯-聚氧丙烯嵌段共聚物、與二烷基磺基琥珀酸（ 鹽） 併用， 則藉由二烷基磺基琥珀酸（ 鹽） 來補充聚氧乙烯-聚氧丙烯嵌段共聚物的效果， 而可進一步提高油水分離效果。Examples of the surfactant having high permeability to SS include polyoxyalkylene alkyl ether or dialkyl sulfosuccinic acid (salt), among which dialkyl sulfosuccinic acid and salts thereof are preferred. Particularly preferred is 2-ethylhexylsulfosuccinic acid and salts thereof. Dialkyl sulfosuccinic acid (salt) has a strong penetrating power to SS. Therefore, if a polyoxyethylene-polyoxypropylene block copolymer is used in combination with a dialkyl sulfosuccinic acid (salt), Dialkyl sulfosuccinic acid (salt) is used to supplement the effect of the polyoxyethylene-polyoxypropylene block copolymer, and the oil-water separation effect can be further improved.
聚氧乙烯-聚氧丙烯嵌段共聚物、與二烷基磺基琥珀酸及其鹽的添加比例並無特別限定， 以質量比計， 較佳為設為聚氧乙烯-聚氧丙烯嵌段共聚物： 二烷基磺基琥珀酸及其鹽（ 合計量）=1： 0.1～ 1： 2，較佳為設為1： 0.5～ 1： 1。藉此，發揮出作為主劑的作用的「聚氧乙烯-聚氧丙烯嵌段共聚物」、與發揮出作為助劑的作用的「二烷基磺基琥珀酸（ 鹽）」的平衡變得良好，可發揮出更高的效果。The ratio of addition of the polyoxyethylene-polyoxypropylene block copolymer to the dialkyl sulfosuccinic acid and the salt thereof is not particularly limited, and is preferably a polyoxyethylene-polyoxypropylene block in terms of a mass ratio. Copolymer: Dialkyl sulfosuccinic acid and its salt (total amount) = 1: 0.1 to 1: 2, preferably 1: 0.5 to 1: 1. In this way, the balance between the "polyoxyethylene-polyoxypropylene block copolymer" which functions as a main component and the "dialkylsulfosuccinic acid (salt) which acts as an auxiliary agent becomes Good, can play a higher effect.
[添加方法]在本實施形態的油水分離方法中，聚氧乙烯-聚氧丙烯嵌段共聚物或二烷基磺基琥珀酸（ 鹽） 等試劑能以固體的狀態添加， 但若考慮到在處理對象物中的混合容易性及均勻化， 則較佳為以液體的狀態添加。[Addition method] In the oil-water separation method of the present embodiment, a reagent such as a polyoxyethylene-polyoxypropylene block copolymer or a dialkyl sulfosuccinic acid (salt) can be added in a solid state, but It is preferable to add in a liquid state, since it is easy to mix and homogenize in a process object.
另外， 聚氧乙烯-聚氧丙烯嵌段共聚物或二烷基磺基琥珀酸（ 鹽） 的添加時期或添加部位亦無特別限定， 只要為與煤焦油接觸的部位即可。具體而言， 可在經沖洗的氨水回到焦油傾析器時添加， 亦可添加至自焦油傾析器輸送的氨水中。另外， 亦可添加至藉由焦油傾析器分離的焦油中， 而促進超級傾析器（ 離心分離） 的脫水。In addition, the addition timing or the addition site of the polyoxyethylene-polyoxypropylene block copolymer or the dialkyl sulfosuccinic acid (salt) is not particularly limited, and may be any portion that comes into contact with the coal tar. Specifically, it may be added when the washed ammonia water is returned to the tar decanter, or may be added to the ammonia water transported from the tar decanter. In addition, it can be added to the tar separated by the tar decanter to promote dehydration of the super decanter (centrifugal separation).
而且， 在將聚氧乙烯-聚氧丙烯嵌段共聚物與二烷基磺基琥珀酸（ 鹽） 併用時， 可預先將所述成分混合， 並且亦可分別分開添加。Further, when the polyoxyethylene-polyoxypropylene block copolymer is used in combination with a dialkyl sulfosuccinic acid (salt), the components may be previously mixed and may be separately added.
在本實施形態的油水分離方法中， 聚氧乙烯-聚氧丙烯嵌段共聚物作用於形成乳液的界面， 而破壞乳液， 並且使水相或水粒子合而為一， 因此可高效率地將水與煤焦油分離。藉此， 可大幅降低煤焦油中的水分， 因此可維持作為焦油製品的穩定的品質。In the oil-water separation method of the present embodiment, the polyoxyethylene-polyoxypropylene block copolymer acts on the interface at which the emulsion is formed, breaks the emulsion, and combines the water phase or the water particles, thereby efficiently Water is separated from coal tar. Thereby, the moisture in the coal tar can be greatly reduced, so that the stable quality as a tar product can be maintained.
另外，本發明亦可採用如以下的構成。（ 1）一種油水分離方法， 其將水與煤焦油分離， 且對含有水的煤焦油或含有煤焦油的水，添加聚氧乙烯-聚氧丙烯嵌段共聚物。（ 2）如（ 1） 所記載的油水分離方法， 其中所述聚氧乙烯-聚氧丙烯嵌段共聚物的疏水基的數量平均分子量為2000 以上。（ 3）如（ 1）或（ 2）所記載的油水分離方法，其中所述聚氧乙烯-聚氧丙烯嵌段共聚物的親水親脂均衡（ Hydrophile-LipophileBalance，HLB） 值為7 以上。（ 4）如（1） 至（ 3） 中任一項所記載的油水分離方法， 其中與所述聚氧乙烯-聚氧丙烯嵌段共聚物一起添加二烷基磺基琥珀酸及/或其鹽。實施例Further, the present invention can also adopt the following constitution. (1) A method for separating oil and water, which separates water from coal tar, and adds a polyoxyethylene-polyoxypropylene block copolymer to coal tar containing water or water containing coal tar. (2) The oil-water separation method according to (1), wherein the polyoxyethylene-polyoxypropylene block copolymer has a number average molecular weight of 2000 or more. (3) The oil-water separation method according to (1) or (2), wherein the polyoxyethylene-polyoxypropylene block copolymer has a Hydrophile-Lipophile Balance (HLB) value of 7 or more. (4) The oil-water separation method according to any one of (1) to (3), wherein a dialkyl sulfosuccinic acid and/or a polyoxyethylene-polyoxypropylene block copolymer thereof is added together with the polyoxyethylene-polyoxypropylene block copolymer salt. Example
以下，列舉本發明的實施例及比較例，對本發明的效果進行具體的說明。在本實施例中， 使用下述表1 所示的試劑， 按照以下所示的順序， 對煤焦油進行處理， 並對油水分離性能進行評價。Hereinafter, the effects of the present invention will be specifically described by way of examples and comparative examples of the present invention. In the present example, coal tar was treated in the order shown below using the reagents shown in Table 1 below, and the oil-water separation performance was evaluated.
首先，將在焦油傾析器出口處採集的焦油（ 水分量為15質量%）靜置在70℃ 的恆溫槽內而提高溫度。繼而， 將達到70℃左右的焦油100 g 分取至100 ml 的試驗管中， 在其中， 以試劑濃度相對於焦油純度（ 除去水分的焦油）成為200 mg/L 的方式， 藉由微量吸管添加試劑後， 藉由刮勺攪拌1 分鐘。First, the tar collected at the outlet of the tar decanter (water content: 15% by mass) was allowed to stand in a constant temperature bath at 70 ° C to raise the temperature. Then, 100 g of tar reaching about 70 ° C was dispensed into a test tube of 100 ml, in which the reagent concentration was increased by 200 mg/L with respect to tar purity (tar removal of moisture), by means of a micropipette. After the reagent, it was stirred by a spatula for 1 minute.
將添加了試劑的焦油樣品在70℃ 的恆溫槽內靜置3 小時後，移至離心管，使用將溫度設定為70℃ 的離心分離機，以1450rpm 的轉速進行10 分鐘離心分離處理。然後， 觀察焦油樣品的外觀， 根據離心分離後的水相的水量， 確認焦油中所存在的水分中有多少%已分離。The tar sample to which the reagent was added was allowed to stand in a constant temperature bath at 70 ° C for 3 hours, and then transferred to a centrifuge tube, and centrifuged at 1450 rpm for 10 minutes using a centrifugal separator having a temperature of 70 ° C. Then, the appearance of the tar sample was observed, and it was confirmed from the amount of water in the aqueous phase after centrifugation that the % of moisture present in the tar was separated.
確認的結果是， 已分離的水量為50 質量%以上時設為A， 已分離的水量為35 質量%以上且小於50 質量%時設為B，已分離的水量為20 質量%以上且小於35 質量%時設為C，已分離的水量小於20 質量%時設為D。具體而言，由於試驗所用的每100 g焦油中含有15 g 的水， 因此例如在離心分離後水相為7.5 ml 以上時成為A。另外， 水相的量可藉由讀取離心管的刻度而測定。將評價結果一併表示於下述表1。As a result of the confirmation, when the amount of separated water is 50% by mass or more, it is set to A, and when the amount of separated water is 35 mass% or more and less than 50% by mass, B is set, and the amount of separated water is 20% by mass or more and less than 35. When the mass % is set to C, and the amount of separated water is less than 20 mass%, it is set to D. Specifically, since 15 g of water per 100 g of tar used in the test, for example, it becomes A when the aqueous phase is 7.5 ml or more after centrifugation. In addition, the amount of the aqueous phase can be determined by reading the scale of the centrifuge tube. The evaluation results are shown together in Table 1 below.
如所述表1 所示般， 在使用聚氧乙烯-聚氧丙烯嵌段共聚物的實施例1～實施例10 中， 與未添加試劑的比較例1 及使用其他試劑的比較例2～比較例12 相比， 油水分離性能高。特別是使用疏水基的數量平均分子量為2000 以上的聚氧乙烯-聚氧丙烯嵌段共聚物的實施例1～ 實施例3、併用二辛基磺基琥珀酸鈉的實施例7～ 實施例10 中， 油水分離效果高。As shown in Table 1, in Examples 1 to 10 using a polyoxyethylene-polyoxypropylene block copolymer, Comparative Example 1 in which no reagent was added and Comparative Example 2 in which other reagents were used were compared. In Example 12, the oil-water separation performance was high. In particular, Examples 1 to 3 using a polyoxyethylene-polyoxypropylene block copolymer having a number average molecular weight of 2000 or more of a hydrophobic group, and Examples 7 to 10 using sodium dioctylsulfosuccinate in combination The oil-water separation effect is high.
根據以上的結果確認到：根據本發明，可有效地將水與煤焦油分離。From the above results, it was confirmed that according to the present invention, water can be effectively separated from coal tar.
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| JP2844470B2 (en) * | 1989-06-20 | 1999-01-06 | タイホー工業株式会社 | Oil-water separation agent |
| JPH04326903A (en) * | 1991-04-26 | 1992-11-16 | New Japan Chem Co Ltd | Oil and water separating agent |
| JP2000230177A (en) * | 1999-02-15 | 2000-08-22 | Dai Ichi Kogyo Seiyaku Co Ltd | Emulsifier for coal tar water separation |
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