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A kind of method utilizing high-speed emulsification shearing to prepare flocculant

A technology of emulsifying shearing and flocculant, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of chemical production, limited adjustment of polymerization degree, etc., to achieve the effects of stable properties, low cost and high dispersibility.

Active Publication Date: 2021-08-31
CHANGZHOU WUJIN YOUBANG WATER PURIFICATION MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of the existing flocculant production process, such as the generation of secondary residues, the instability of the "alkali" conditioning system and the precipitation, the limitation of the adjustment of the degree of polymerization, and the difficulty in realizing continuous production. A method for preparing flocculants by high-speed emulsification and shearing, combined with the existing "alkali" adjustment process to achieve "slag-free" and "continuous" production goals in the field of flocculant preparation

Method used

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  • A kind of method utilizing high-speed emulsification shearing to prepare flocculant
  • A kind of method utilizing high-speed emulsification shearing to prepare flocculant
  • A kind of method utilizing high-speed emulsification shearing to prepare flocculant

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Embodiment 1

[0029] A method for preparing a flocculant by high-speed emulsification and shearing, comprising the following steps: high-speed shearing, stirring, dispersion and homogenization of the reaction base material, continuous addition of an alkaline regulator according to the ratio of process materials, and continuous emulsification and shearing after the addition is complete. The flocculant was prepared by stirring reaction, wherein the shear stirring high tangential velocity was 38m / s, the reaction temperature was 75°C, the mass ratio of base material to alkaline regulator was 3:1, and the flow rate of alkaline regulator was 0.05m 3 / h, shear stirring reaction time is 2h.

[0030] Illustrate with the industrial grade polyaluminum chloride (PAC) product as an example:

[0031] Among them, the base aluminum liquid is aluminum chloride, and the main performance indicators are shown in Table 1 below:

[0032]The main performance index of table 1 embodiment 1 base material aluminum c...

Embodiment 2

[0038] A method for preparing a flocculant by high-speed emulsification and shearing, comprising the following steps: high-speed shearing, stirring, dispersion and homogenization of the reaction base material, continuous addition of an alkaline regulator according to the ratio of process materials, and continuous emulsification and shearing after the addition is complete. The flocculant was prepared by stirring reaction, wherein the shear stirring high tangential velocity was 30m / s, the reaction temperature was 75°C, the mass ratio of base material to alkaline regulator was 3:1, and the flow rate of alkaline regulator was 0.05m 3 / h, shear stirring reaction time is 2h.

[0039] Wherein base material and alkaline conditioner are identical with embodiment 1.

Embodiment 3

[0041] A method for preparing a flocculant by high-speed emulsification and shearing, comprising the following steps: high-speed shearing, stirring, dispersion and homogenization of the reaction base material, continuous addition of an alkaline regulator according to the ratio of process materials, and continuous emulsification and shearing after the addition is complete. The flocculant was prepared by stirring reaction, wherein the shear stirring high tangential velocity was 40m / s, the reaction temperature was 75°C, the mass ratio of base material to alkaline regulator was 3:1, and the flow rate of alkaline regulator was 0.05m 3 / h, shear stirring reaction time is 2h.

[0042] Wherein base material and alkaline conditioner are identical with embodiment 1.

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Abstract

The invention discloses a method for preparing a flocculant by utilizing high-speed emulsification and shearing. The preparation method comprises the following steps: dispersing and homogenizing the base material by high-speed shearing and stirring, adding an alkaline regulator by shearing and stirring, and continuing emulsification, shearing and stirring to prepare the flocculant after adding, wherein the shearing and stirring high-tangential The speed is 25~45m / s, and the reaction temperature is 60~80℃. The present invention adopts the high-speed emulsification and shearing technology to prepare the flocculant, which overcomes the defects that the traditional alkali adjustment process is prone to system instability and precipitates, which leads to the limitation of polymerization degree adjustment, and can realize continuous production, getting rid of the traditional intermittent production mode, The production goal of "no slag" in the field of flocculant preparation has been realized. The prepared flocculant is clear and translucent, stable in nature, basicity can meet the requirements of relevant product national or industry standards, and has more fluidity, dispersibility and high flocculation contact ratio The surface area and decolorization and turbidity removal capacity are 5-15% higher than those of traditional commercially available flocculants.

Description

technical field [0001] The invention relates to the technical field of flocculant preparation, more specifically, to a method for preparing flocculant by high-speed emulsification shearing. Background technique [0002] The substance that can cause the solute, colloid or suspended particles in the aqueous solution to produce flocculent precipitation is called flocculant, which can be divided into two categories: inorganic flocculant and organic flocculant according to its chemical composition. Inorganic flocculants account for more than 80% of the total amount of flocculants, mainly high-valent metal salts containing aluminum and iron and clustered inorganic polymers, including aluminum chloride, aluminum sulfate, polyaluminum chloride (PAC), polyaluminum sulfate ( PAS), ferric chloride, polyferric chloride (PFC), polyferric sulfate (PFS), etc., mainly used for drinking water purification, municipal sewage, urban and industrial water supply and wastewater treatment in paperm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52
CPCC02F1/5236
Inventor 居银栋左选凤孙戎斐蒋浩刘巍斌
Owner CHANGZHOU WUJIN YOUBANG WATER PURIFICATION MATERIALS
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