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Process for synthesizing organic polymer flocculant by controlling concentration of hydrochloric acid

An organic polymer, hydrochloric acid concentration technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of adverse effects on human health and ecological environment, limited application scope, low scum output, etc., to improve the reaction efficiency and product quality. performance, lower synthesis cost, and the effect of easy operation by workers

Inactive Publication Date: 2014-04-16
刘萍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 flocculation ability is strong, the flocs are easy to separate, and the effect of removing oil and suspended matter is good , but the residual monomers of this type of polymer have "three-caused" effects (causation, carcinogenicity, and mutagenesis), thus limiting its application range; microbial flocculants are easy to use and have a promising application prospect because of the absence of secondary pollution seductive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The synthetic technique of a kind of organic polymer flocculant that the present invention relates to comprises the following steps:

[0026] (a) Measure a certain amount of polyacrylamide, formaldehyde, dimethylamine, and hydrochloric acid for subsequent use. In terms of mass percentage, hydrochloric acid accounts for 1.0% of the total amount;

[0027] (b) Formaldehyde is placed in the reaction vessel;

[0028] (c) slowly add polyacrylamide and catalyst in reaction vessel, stir while adding;

[0029] (d) Then, the reaction vessel is placed in a water bath to be heated;

[0030] (e) Next, add dimethylamine in the reaction vessel;

[0031] (f) cooling, then adding hydrochloric acid quaternization;

[0032] (g) Finally, the target product is obtained through evaporation, concentration and filtration.

[0033] Because in the synthesis process of organic polymer flocculant, the concentration of hydrochloric acid has a great influence on the conversion rate of synthesis ...

Embodiment 2

[0036] The only difference between this embodiment and embodiment 1 is that in this embodiment, hydrochloric acid accounts for 0.8% of the total amount in terms of mass percentage, and the other parts of this embodiment are the same as embodiment 1, and will not be repeated.

Embodiment 3

[0038] The only difference between this embodiment and embodiment 1 is that in this implementation, in terms of mass percentage, hydrochloric acid accounts for 1.2% of the total amount, and other parts of this embodiment are the same as embodiment 1, and will not be repeated.

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PUM

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Abstract

The invention discloses a process for synthesizing an organic polymer flocculant. The process comprises the following steps: (a) measuring certain quantities of polyacrylamide, formaldehyde, dimethylamine and hydrochloric acid for later use, wherein in percentage by mass, the hydrochloric acid accounts for 1.0 percent of the total mass; (b) placing the formaldehyde in a reaction container; (c) slowly adding the polyacrylamide and a catalyst into the reaction container and stirring with adding; (d) then placing the reaction container into water bath to heat; (e) next, adding the dimethylamine into the reaction container; (f) cooling and then adding the hydrochloric acid to carry out quaternization; (g) finally, obtaining the target product by carrying out evaporation concentration and filtration. According to the invention, the qualified organic polymer flocculant can be successfully synthesized; the synthesis process is simple; the synthesis conversion rate is high; the process is convenient for workers to operate; synthesis cost of the organic polymer flocculant is greatly reduced; in the synthesizing process, by controlling the concentration of the hydrochloric acid, reaction efficiency and product performance are further improved.

Description

technical field [0001] The invention relates to a synthesis process of an organic polymer flocculant for controlling the concentration of hydrochloric acid. 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] Organic macromolecular flocculants appeared in the 1950s, they have broad application prospects and develop very rapidly. It has been used in water purification, water / oil system demulsification, oily wastewater treatment, wastewater recycling and sludge dehydration, etc.; it can also be used as a mud treatment agent, selective water blocking agent, and water injection thickener in the oilfield development process , softener in text...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F20/56C08F8/44C02F1/56
Inventor 刘萍
Owner 刘萍
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