Reversed-phase emulsion with double particle size distribution and preparation method and application of reversed-phase emulsion

Abstract

The invention discloses a reversed-phase emulsion with double particle size distribution. The reversed-phase emulsion is characterized in that the particle size distribution of latex particles in thesame reversed-phase emulsion system is between 20 nm and 70 nm and between 100 nm and 500 nm; forming an emulsion A and an emulsion B with different particle sizes by controlling an emulsifier systemand an emulsification mode, and preparing the reversed-phase emulsion with bimodal distribution of the particle sizes at one time by virtue of three-stage polymerization reaction of the emulsion A andthe emulsion B in the same system; the reversed-phase emulsion prepared by the preparation method is used as a water treatment flocculant, a sludge dewatering agent and a papermaking auxiliary agent,especially the sludge dewatering agent prepared by the reversed-phase emulsion is used for dewatering sludge, only the reversed-phase emulsion provided by the invention is used, other inorganic conditioners or various organic conditioners are not needed, the cost is low, and the environment-friendly effect is good. Therefore, the water content of the filter cake after sludge dehydration treatmentcan be below 50%, and the method has the advantages of high solid content, low consumption, high dissolution speed, convenience in use and the like.

Description

technical field [0001] The invention belongs to the technical field of inverse emulsion polymerization, and in particular relates to an inverse emulsion with double particle size distribution, a preparation method and application thereof. Background technique [0002] The pollutants and nutrients in the sewage are continuously aggregated under the action of a large number of bacteria, and the gradually increasing aggregate structure finally settles down in the water to form sludge. The reason why the moisture content of sludge is high is that sludge and water molecules are very tightly combined and have different phase states: free water, physically bound water (including capillary / interstitial water, colloidal / surface adsorbed water), chemically bound water For water (including intracellular water and molecular water), the former two can be dehydrated after flocculation and sedimentation by adding common flocculants, while chemically bound water needs to break chemical bond...

AI Technical Summary

Problems solved by technology

Among them, high-ionicity polyacrylamide and quaternary ammonium salt are mentioned, which have the function of destroying the cell wall, but the conditioner disclosed in the patent is a mixture of various organic conditioners, and mainly introduces the use method of the composite conditioner, but the simple There is uneven mixing in physical compounding, and the morphology and solubility of different components are different. During use, the degree of dissolution may be uneven, which will lead to the lack of time for some components to exert their effects, and the overall synergistic effect cannot be maximized.

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