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Application of a star-shaped polycation-based compound as a flocculant

A multi-cation and compound technology, which is applied in the application field of star-shaped multi-cation-based compounds as flocculants, can solve the problems of large amount of chemical flocculants, secondary pollution, and difficulty in decomposing, etc., to facilitate oil-water separation treatment and reduce treatment costs Effect

Active Publication Date: 2020-06-09
陕西建工建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although traditional flocculation can remove most of the suspended solids and colloidal substances, the commonly used chemical flocculants are used in large amounts, which are not easily decomposed and easily cause secondary pollution

Method used

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  • Application of a star-shaped polycation-based compound as a flocculant
  • Application of a star-shaped polycation-based compound as a flocculant
  • Application of a star-shaped polycation-based compound as a flocculant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Be that 20% methylamine aqueous solution (23.25g, wherein contain methylamine 4.65g, 0.15mol) and acidic catalyst (85%H 3 PO 4 , 0.30g), warming up to 40 ° C, dropwise added a mass fraction of 70% trimethylolpropane - three (3- aziridinyl propionate) aqueous solution (35.42g, which contains trimethylolpropane - three (3-Aziridinyl propionate) 21.25 g, 0.05 mol), the dropping time is 40 min. After the dropwise addition, the temperature was raised to 70° C. for 5 h.

[0030] (2) The above reaction solution was mixed with K 2 CO 3 Adjust to weakly alkaline (pH=9~10), under the protection of nitrogen, add dropwise a 60% mass fraction of methyl chloride ethanol solution (25.25g, which contains 15.15g of methyl chloride, 0.30mol), and react at 50°C for 10h ; After the reaction, the insoluble matter was removed, the reaction solution was concentrated, the product was purified by toluene column chromatography, and the product was vacuum-dried to constant weight to obtai...

Embodiment 2

[0036] (1) It is 70% ethylamine aqueous solution (9.54g, wherein containing ethylamine 6.75g, 0.15mol) and acidic catalyst (85%H 3 PO 4 , 0.30g), warming up to 50 ° C, dropwise adding a mass fraction of 70% trimethylolpropane-three (3- aziridinyl propionate) aqueous solution (35.42g, which contains trimethylolpropane-three (3-Aziridinyl propionate) 21.25 g, 0.05 mol), the dropping time is 40 min. After the dropwise addition was completed, the temperature was raised to 70° C. for 7 h.

[0037] (2) The above reaction solution was mixed with K 2 CO 3 Adjust to weakly alkaline (pH = 9 ~ 10), under the protection of nitrogen, dropwise add benzyl chloride ethanol solution (47.48g, containing 37.98g, 0.30mol) of benzyl chloride with a mass fraction of 80%, at 70°C React for 16 hours; remove the insoluble matter after the reaction, concentrate the reaction solution, purify and isolate the product by toluene column chromatography, and vacuum dry to constant weight to obtain the pro...

Embodiment 3

[0048] (1) Be that 80% dodecyl primary amine ethanol solution (34.69g, wherein contain dodecyl primary amine 27.75g, 0.15mol) and acidic catalyst (85%H 3 PO 4 , 0.50g), be warming up to 50 ℃, dropwise add the trimethylolpropane-three (3- aziridinyl propionate) ethanol solution (35.42g, containing trimethylolpropane- Tris(3-aziridinyl propionate) 21.25 g, 0.05 mol), and the dropping time is 40 min. After the dropwise addition was completed, the temperature was raised to 70° C. for 6 h.

[0049] (2) The above reaction solution was mixed with K 2 CO 3 Adjust to weakly alkaline (pH=9~10), under the protection of nitrogen, add dropwise a 60% mass fraction of methyl chloride ethanol solution (25.25g, which contains 15.15g of methyl chloride, 0.30mol), and react at 50°C for 10h ; After the reaction, the insoluble matter was removed, the reaction solution was concentrated, the product was purified by toluene column chromatography, and the product was vacuum-dried to constant weigh...

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Abstract

The invention discloses an application of a star type polycation based compound as a flocculating agent. The star type cationic flocculating agent carries dense charges. The species of flocculating agents are enlarged. The flocculating agent can efficiently process oil stains in water. The flocculating effect is prominent. The flocculating agent is an excellent oil stain processor.

Description

technical field [0001] The invention relates to the technical field of preparation of polyquaternary ammonium salt cationic surfactants, in particular to the application of a star-shaped polycation-based compound as a flocculant. Background technique [0002] Flocculation is a simple, effective and widely used process in the traditional water treatment process. It adds flocculants to the wastewater, changes the surface charge of the colloids in the water, absorbs them, and captures them with a net to make the colloidal particles in the water A method in which substances are separated by coagulation and flocculation to purify wastewater. Commonly used flocculants include inorganic salts such as aluminum sulfate, ferric chloride, etc., and polymer substances such as polyaluminum chloride and polyacrylamide. Although traditional flocculation can remove most of the suspended solids and colloidal substances, the commonly used chemical flocculants are used in large amounts, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/54C02F1/50C07C229/16C07C227/04C07C227/18
CPCC02F1/50C02F1/547C07C227/04C07C227/18C07C229/16
Inventor 王晨王霞辛燕杨晓武费贵强
Owner 陕西建工建材科技有限公司
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