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A kind of cationic polyamide sodium xanthate flocculant and preparation method thereof

A technology of sodium xanthate and polyamide, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of removing insoluble heavy metals and failing to meet water quality standards, etc. problems, to achieve the effect of wide application range, reduce the number of processing units, and reduce processing costs

Active Publication Date: 2017-10-20
彬州翰澜环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the considerable stability of these complexes, on the one hand, the solubility of heavy metals has been greatly improved, and on the other hand, it is difficult for the ligands (such as carboxyl groups) in the molecules of common polymer flocculants to cooperate with the complexes in the above complexes. Therefore, the existing flocculant varieties cannot effectively remove dissolved heavy metals, and the water quality standard cannot be met only by flocculation unit operation.

Method used

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  • A kind of cationic polyamide sodium xanthate flocculant and preparation method thereof
  • A kind of cationic polyamide sodium xanthate flocculant and preparation method thereof
  • A kind of cationic polyamide sodium xanthate flocculant and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] see figure 1 and figure 2 , (1) Adipic acid and diethylenetriamine are carried out in a molar ratio of 1:1.1. First, 3.88g of diethylenetriamine is added to the reaction kettle, then 2.5g of water is added, and 5g of diethylenetriamine is added dropwise under mechanical stirring. Diacid, add 0.1g of catalyst p-toluenesulfonic acid after the dropwise addition, wait for the temperature to rise to 125-135°C, and keep it warm for 30min;

[0032] (2) Install a water separator in the reaction kettle to separate 2.5mL of water, then continue to heat up to 155°C for 3h, and finally raise the temperature to 185°C for 1h (reduce the production of by-products), and obtain a light amber solid, namely polyamide 6.78 g.

[0033] (3) Dilute the solid obtained in step (2) to a solid content (mass fraction) of 40% solution with deionized water, then slowly add 5g of 2,3-epoxypropylene dropwise with a constant pressure dropping funnel Trimethylammonium chloride, after the dropwise ad...

Embodiment 2

[0036] (1) Adipic acid and diethylenetriamine are carried out at a molar ratio of 1:1.1. First, 3.88g of diethylenetriamine is added to the reaction kettle, then 2.5g of water is added, and 5g of diethylenediamine is added dropwise under mechanical stirring. acid, add 0.1g of catalyst p-toluenesulfonic acid after the dropwise addition, continue heating and stirring, wait until the temperature rises to 125-135°C, and keep it warm for 30min.

[0037] (2) Install a water separator in the reaction kettle to separate 2.5 mL of water, then continue to heat up to 160°C for 3 hours, and finally raise the temperature to 185°C for 1 hour to obtain 6.99 g of amber solid, which is polyamide.

[0038] (3) Dilute the solid obtained in step (2) to a solid content (mass fraction) of 40% solution with deionized water, then slowly add 5g of 2,3-epoxypropylene dropwise with a constant pressure dropping funnel Trimethyl ammonium chloride, after the dropwise addition, react in a constant temperatu...

Embodiment 3

[0041](1) Adipic acid and diethylenetriamine are carried out at a molar ratio of 1:1.1. First, 3.88g of diethylenetriamine is added to the reaction kettle, then 2g of water is added, and 5g of adipic acid is added dropwise under mechanical stirring. , after the dropwise addition, add 0.1g catalyst p-toluenesulfonic acid, continue heating and stirring, wait until the temperature rises to 125-135°C, and keep warm for 30min;

[0042] (2) Install a water separator in the reaction kettle to separate 2 mL of water, then continue to heat up to 165°C for 3 hours, and finally raise the temperature to 185°C for 1 hour to obtain 7.06 g of a light amber solid, which is polyamide.

[0043] (3) Dilute the solid obtained in step (2) to a solution with a solid content (mass fraction) of 30% with deionized water, then slowly add 4g of 2,3-epoxypropylene dropwise with a constant pressure dropping funnel Trimethyl ammonium chloride, after the dropwise addition, react in a constant temperature wa...

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Abstract

A cation polyamide sodium xanthate flocculating agent and a preparation method thereof are disclosed. The preparation method comprises: adding diethylenetriamine into a reaction kettle, adding water and stirring uniformly, dropwise adding adipic acid with stirring, so as to prepare an amber solid; adding the amber solid into deionized water, so as to obtain a solution, then adding the solution into the reaction kettle, introducing N2, then adding 2,3-epoxypropyltrimethylammonium chloride, and stirring at 70-80 DEG C for 4-5 h, so as to obtain a transparent yellow solution, then performing rotary evaporation to remove water, so as to obtain a slightly-yellow paste; and dissolving the slightly-yellow paste with sodium hydroxide, then adding into the reaction kettle, then dropwise adding carbon disulfide, so as to obtain the cation polyamide sodium xanthate flocculating agent. Compared with the same kind of flocculating agents, the flocculating agent is large in electric charge density, contains tertiary amine and quaternary amines groups, is good in flocculation effect, also contains strong coordination group chelating with heavy metals, is strong in chelating capability, and reaches extremely good effect of processing heavy metal ions in wastewater.

Description

technical field [0001] The invention belongs to the field of heavy metal sewage treatment and flocculants, and relates to a cationic polyamide sodium xanthate flocculant and a preparation method thereof. Background technique [0002] Nowadays, all kinds of industrial enterprises in the world still discharge a large amount of heavy metal ions to the environment, such as cadmium, mercury, lead, arsenic, chromium, copper, zinc, nickel, etc., because these heavy metals cannot be degraded by microorganisms and become persistent pollutants, extremely The earth endangers the ecological environment and people's health. [0003] In recent years, with the rapid development of the transportation industry, modern industry, and agriculture, especially the pollution of food sources, battery production, metal smelting, and dismantling and melting of old ships, the natural world (atmosphere, water, soil and Food) heavy metal content is extremely increased, and the content in the human body...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/48C08G69/28C02F1/56C02F101/20
CPCC02F1/56C02F2101/20C08G69/28C08G69/48
Inventor 郭睿王超刘爱玉杨江月李欢乐程敏甄建斌李晓芳
Owner 彬州翰澜环保科技有限公司