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Amide polycarboxylic acid water treatment agent and preparation method and application thereof, and composite silicon-scale-inhibiting water treatment agent and use method thereof

A water treatment agent, polycarboxylic acid-like technology, applied in water/sludge/sewage treatment, chemical instruments and methods, descaling and water softening, etc. Elements, non-biodegradable and other problems, to achieve excellent anti-silicon scale effect, improve the performance of anti-silicon scale, and significantly prevent corrosion of equipment

Active Publication Date: 2022-01-11
XINJIANG UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides an amide polycarboxylic acid water treatment agent and its preparation method and application, and also includes a composite silicon scaling water treatment agent and its use method, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of Existing initiators make the reaction intensified and difficult to control, and the silicon scaling water treatment agent contains a large amount of phosphorus and cannot be biodegraded

Method used

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  • Amide polycarboxylic acid water treatment agent and preparation method and application thereof, and composite silicon-scale-inhibiting water treatment agent and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: the preparation method of this amides polycarboxylic acid water treatment agent, carry out according to the following steps:

[0021] The first step: take the required amount of N-maleyl-L-glutamic acid and acrylic acid and dissolve it in water, add an initiator to it at the required reaction temperature, stir the reaction, and obtain the reaction product mixture; the second step , the reaction product mixture obtained in the first step is extracted with an organic solvent, and the organic solvent extract is taken after layering, and after the organic solvent extract is dried, an amide polycarboxylic acid water treatment agent is obtained; wherein, N-maleyl -The mass ratio of L-glutamic acid and acrylic acid is 1:0.2 to 1:1.6, and the mass ratio of N-maleyl-L-glutamic acid and acrylic acid to the total mass of water is 1:2 to 1:5, triggering The agent is one of azobisisobutylamidine hydrochloride, dibenzoyl peroxide and tri-n-butylborane.

[0022] In the ...

Embodiment 2

[0029] Embodiment 2: the preparation method of this amides polycarboxylic acid water treatment agent, carry out according to the following steps:

[0030] The first step: take the required amount of N-maleyl-L-glutamic acid and acrylic acid and dissolve it in water, add an initiator to it at the required reaction temperature, stir the reaction, and obtain the reaction product mixture; the second step , the reaction product mixture obtained in the first step is extracted with an organic solvent, and the organic solvent extract is taken after layering, and after the organic solvent extract is dried, an amide polycarboxylic acid water treatment agent is obtained; wherein, N-maleyl -The mass ratio of L-glutamic acid and acrylic acid is 1:0.2 or 1:1.6, the mass ratio of N-maleyl-L-glutamic acid and acrylic acid total mass to water is 1:2 or 1:5, triggering The agent is one of azobisisobutylamidine hydrochloride, dibenzoyl peroxide and tri-n-butylborane.

[0031] In the first step ...

Embodiment 3

[0036] Embodiment 3: the amide polycarboxylic acid water treatment agent prepared by the preparation method described in the above examples.

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Abstract

The invention relates to the technical field of water treatment, in particular to an amide polycarboxylic acid water treatment agent and a preparation method and application thereof, a composite silicon scale inhibiting water treatment agent and a use method thereof. The preparation method of the amide polycarboxylic acid water treatment agent comprises the following steps: dissolving N-maleyl-L-glutamic acid and acrylic acid in water, adding an initiator at a required reaction temperature, carrying out a stirring reaction to obtain a mixed solution of a reaction product, extracting the obtained mixed solution of the reaction product by using an organic solvent, and drying the extract to obtain the amide polycarboxylic acid water treatment agent, wherein the initiator is one of azobis(isobutylamidine hydrochloride), dibenzoyl peroxide and tri-n-butyl borane. In conclusion, the amide polycarboxylic acid water treatment agent and the composite silicon-scale-inhibiting water treatment agent have an excellent silicon scale inhibition effect, can effectively overcome the limitation of the existing silicon-scale-inhibiting water treatment agent, greatly improve the silicon scale inhibition performance, and also have significant effects on calcium carbonate scale inhibition and equipment corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of water treatment, and relates to an amide-type polycarboxylic acid water treatment agent and its preparation method and application, and also includes a composite silicon scale inhibiting water treatment agent and its use method. Background technique [0002] At present, silicon-based substances, calcium, and magnesium ions in silicon-containing wastewater from industrial enterprises tend to form silicon scale, calcium carbonate scale, calcium sulfate scale, calcium phosphate scale, etc. on the walls of pipes, containers and heat exchange equipment, which will block the pipeline. , reduce the flow rate, and at the same time reduce the heat transfer efficiency of the heat transfer equipment, and because the silicon scale is dense, hard and hard, it is difficult to remove the silicon scale once formed, and it is often cleaned with highly corrosive ammonium bifluoride. damage the device. Silica scale mainly ...

Claims

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Application Information

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IPC IPC(8): C08F222/38C08F220/06C02F5/12C02F5/10
CPCC08F222/38C08F220/06C02F5/12C02F5/10
Inventor 甄卫军张启迪赵玲姜洪涛沈峰陶睿李波季建波刘国营杨伟强
Owner XINJIANG UNIVERSITY