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Preparation method of hydrophobic anion flocculant

An anionic flocculant, hydrophobic technology, applied in the direction of dewatering/drying/concentrating sludge treatment, etc., can solve the problems of difficult drying, poor hydrophobicity, and difficulty in reducing the moisture content of river and lake sediments, and achieves enhanced hydrophobicity, use Wide range, good flocculation effect

Inactive Publication Date: 2010-12-01
JIANGSU JIANGDA ECOLOGICAL SCI & TECHCO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently commercially available anionic organic polymer flocculants are difficult to reduce the water content in river and lake sediments due to their poor hydrophobic properties, making it difficult to dry them, so there are certain limitations in river and lake sediment dredging projects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment one: a kind of preparation method of hydrophobic anion flocculant comprises the following process steps:

[0017] (1) take by weighing 11.38g of acrylamide, 6.84g of 2-acrylamido-2-methylpropanesulfonic acid and 1.28g of butyl acrylate for subsequent use;

[0018] (2) Add acrylamide and 2-acrylamido-2-methylpropanesulfonic acid successively in a four-necked flask equipped with stirring, thermometer, gas guiding device and feeding device, then add 58.5g of deionized water and System A was obtained by stirring with nitrogen gas; the stirring speed was 250 rpm, the stirring time was 15 minutes; the flow rate of nitrogen gas was 5 ml / min, and the reaction temperature was 25°C;

[0019] (3) Add the anionic surfactant of 3.32g in system A: sodium lauryl sulfate, continue to feed nitrogen and stir to obtain system B; Stirring speed is 250 rev / min, and stirring time is 15 minutes; The flow rate of nitrogen is 5 mL / min, the reaction temperature is 25°C;

[0020] (4)...

Embodiment 2

[0022] Embodiment two: a kind of preparation method of hydrophobic anion flocculant comprises the following process steps:

[0023] (1) take by weighing 8.28g of acrylamide, 4.56g of 2-acrylamido-2-methylpropanesulfonic acid and 1.56g of butyl acrylate for subsequent use;

[0024] (2) Add acrylamide and 2-acrylamido-2-methylpropanesulfonic acid successively into a four-necked flask equipped with stirring, a thermometer, a gas guiding device and a feeding device, then add 53.5 g of deionized water and Stir with nitrogen gas to obtain system A; the stirring speed is 300 rpm, the stirring time is 10 minutes; the flow rate of nitrogen gas is 10 ml / min, and the reaction temperature is 30°C;

[0025] (3) Add the anionic surfactant of 2.96g in system A: sodium lauryl sulfate, continue to feed nitrogen and stir to obtain system B; Stirring speed is 300 rev / min, and stirring time is 10 minutes; The flow rate of nitrogen is 10 mL / min, the reaction temperature is 30°C;

[0026] (4) Add...

Embodiment 3

[0028] Embodiment three: a kind of preparation method of hydrophobic anion flocculant comprises the following process steps:

[0029] (1) Acrylamide of 9.38g, 2-acrylamido-2-methylpropanesulfonic acid of 5.48g and butyl acrylate of 2.06g are standby;

[0030] (2) Add acrylamide and 2-acrylamido-2-methylpropanesulfonic acid successively into a four-necked flask equipped with stirring, thermometer, gas guiding device and feeding device, then add 56.76g of deionized water and System A was obtained by stirring with nitrogen gas; the stirring speed was 280 rpm, the stirring time was 12 minutes; the flow rate of nitrogen gas was 8 ml / min, and the reaction temperature was 28°C;

[0031] (3) Add the anionic surfactant of 3.03g in system A: sodium lauryl sulfate, continue to feed nitrogen and stir to obtain system B; Stirring speed is 280 rev / min, and stirring time is 12 minutes; The flow rate of nitrogen is 8 mL / min, the reaction temperature is 28°C;

[0032] (4) Add butyl acrylate ...

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Abstract

The invention relates to a preparation method of hydrophobic anion flocculant, which is characterized in that the method comprises the following processing steps: (1) taking a monomer for standby, wherein the monomer is acrylamide, 2-acrylamide group-2-methylpropanesulfonic acid and butyl acrylate; (2) successively adding acrylamide and 2-acrylamide group-2-methylpropanesulfonic acid into four flasks with a stirrer, a thermometer, an air guidance device and a feeding device, adding deionized water and introducing nitrogen to stir to obtain a system A; (3) adding an anion surfactant to the system A, continuously introducing nitrogen to obtain a system B by stirring; (4) adding butyl acrylate into the system B, and introducing the nitrogen to stir to obtain a system C; and (5) adding the initiator into a system C, and continuously introducing the nitrogen to react to obtain a finished product. The anion surfactant is lauryl sodium sulphate. The initiator is the mixture of ammonium persulfate and sodium hydrogensulfite. The hydrophobic anion flocculant prepared by the invention has high molecular weight and favourable flocculation effect.

Description

technical field [0001] The invention relates to a preparation method of an organic polymer compound, in particular to a preparation method of a hydrophobic anion flocculant. Background technique [0002] The use of flocculants is one of the important ways to deal with the rapid dehydration of sediment at present. The flocculant makes the mud particles settle quickly through the functions of adsorption and bridging, so as to achieve the effect of mud-water separation. Due to the small sediment particles, high moisture content and difficult dehydration, organic polymer flocculants represented by polyacrylamide have been widely used in sediment dewatering. This kind of flocculant has the characteristics of high molecular weight, less dosage, fast flocculation speed and good flocculation effect. Organic polymer flocculants can be divided into different categories such as anionic, cationic, and amphoteric, each of which has its own application range and advantages and disadvant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/58C08F220/18C02F11/14
Inventor 姚科
Owner JIANGSU JIANGDA ECOLOGICAL SCI & TECHCO
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