an emulsion flocculant

An emulsifier and composition technology, applied in the field of emulsion flocculants and emulsifiers, can solve problems such as insufficient improvement of emulsion, and achieve the effects of low coagulation rate, improved stability and small dosage

Active Publication Date: 2021-08-06
苏州赛维科环保技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing emulsifiers are still not enough to improve the high temperature or long-term stability of various emulsions, especially polyacrylamide emulsions.

Method used

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  • an emulsion flocculant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1, emulsifier composition

[0040] See Table 1 for the composition and dosage ratio of the emulsifier composition (emulsifier 1-4) that meets the requirements of this application and the emulsifier composition (emulsifier 5-6) as a comparison.

[0041] The composition and consumption table of each emulsifier composition of table 1

[0042]

[0043] As a control, emulsifier 8 contained only sodium alkylsulfonate.

[0044] Emulsifier 9 as a control contained only PHEMA-b-PRA.

Embodiment 2

[0045] Embodiment 2, the preparation of polyacrylamide emulsion

[0046] A kind of polyacrylamide emulsion, its preparation comprises the steps:

[0047] (1) Preparation of the water phase: dissolving acrylamide and sodium acrylate monomers in the water phase and adjusting the pH value to 6.8;

[0048] (2) Preparation of the oil phase: each emulsifier composition in Example 1 is mixed with the oil phase solvent;

[0049] (3) Preparation of monomer emulsion: control the maximum temperature of 30°C, the oil phase is sheared at 6400RPM at high speed for 60s, during which the water phase is slowly added to the oil phase;

[0050] (4) Emulsion polymerization: add a redox initiator to initiate the polymerization reaction, the polymerization temperature is 45°C, the highest polymerization temperature is 47°C, and the polymerization time is 45min;

[0051](5) Finished product: After the reaction, a reverse phase agent is added to obtain an anionic polyacrylamide emulsion. The emuls...

Embodiment 3

[0060] Embodiment 3, standing test at normal temperature

[0061] Emulsions 1-7 obtained in Example 2 were put into test tubes respectively, capped, and stored at room temperature and pressure for 6 weeks.

[0062] The results showed that emulsion 1-4 had no delamination phenomenon; emulsion 5 had serious delamination, emulsion 6 had delamination, and emulsion 7 had slight delamination. see results figure 2 . Wherein A is emulsion 5, B is emulsion 6, and C is emulsion 7.

[0063] Emulsions 1-7 were put into test tubes respectively, capped, and stored at room temperature and pressure for 6 months.

[0064] The results showed that emulsion 1-6 had no delamination phenomenon; emulsion 5-7 had severe delamination.

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Abstract

The application discloses an emulsion flocculant, and its preparation method comprises (1) preparation of water phase: dissolving acrylamide and sodium acrylate monomers in the water phase and adjusting the pH value; (2) preparation of oil phase: dissolving The emulsifier composition described in claim 1 is mixed with the oil phase solvent; (3) preparation of monomer emulsion: slowly add the water phase to the oil phase under high shear; (4) emulsion polymerization: add redox initiator To initiate the polymerization reaction; (5) Finished product: After the reaction, a reverse phase agent is added to obtain a high relative molecular weight anionic polyacrylamide emulsion. The emulsion flocculant can form a homogeneous and stable emulsion. Its median particle size is finer and uniformly distributed particles can be observed. Under normal use and storage conditions, it has low coagulation rate and high stability. It also has Long-term stability during high-temperature processes, transport and storage.

Description

technical field [0001] The invention belongs to the field of flocculants, and in particular relates to an emulsion flocculant and an emulsifier. Background technique [0002] According to its chemical composition, flocculants can be generally divided into two types: inorganic flocculants and organic flocculants. Inorganic flocculants include inorganic coagulants and inorganic polymer flocculants; organic flocculants include synthetic organic polymer flocculants, natural organic polymer flocculants and microbial flocculants. [0003] There are many kinds of flocculants, from low molecular weight to high molecular weight, from single type to composite type, and the general trend is to develop towards the direction of cheap, practical, non-toxic and high-efficiency. Inorganic flocculants are cheap, but they will have adverse effects on human health and the ecological environment; although organic polymer flocculants are used in a small amount, the scum output is small, the flo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F287/00
CPCC02F1/56C08F220/56C08F220/06
Inventor 邱振权
Owner 苏州赛维科环保技术服务有限公司
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