Bactericidal scale and corrosion inhibitor for seawater desalination

A scale and corrosion inhibitor and bactericidal technology, which is applied in the field of scale and corrosion inhibitor for bactericidal seawater desalination, can solve the problem of single function of the agent, and achieve remarkable effect, good slime stripping effect, and good scale inhibition effect. Effect

Inactive Publication Date: 2015-12-09
安徽省蓝天能源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, for seawater desalination, the function of the agent is relatively single, and it is usually necessary to use a combination of corrosion inhibitor, scale inhibitor and fungicide

Method used

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  • Bactericidal scale and corrosion inhibitor for seawater desalination
  • Bactericidal scale and corrosion inhibitor for seawater desalination
  • Bactericidal scale and corrosion inhibitor for seawater desalination

Examples

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Effect test

Embodiment 1

[0026] Example 1: A scale and corrosion inhibitor bactericide for seawater desalination according to the present invention, and its ingredients are as follows:

[0027]

[0028] Among them, the solid content of polyquaternary ammonium salt is ≥40%; the molecular weight of sodium polyepoxysuccinate is in the range of 800-1500; and the polyaspartic acid-polymaleic anhydride complex has an average molecular weight of polymaleic anhydride greater than 5500. And the ratio of the two is 2:3; the zinc salt is zinc sulfate.

[0029] The steps of the preparation method of the present invention are:

[0030] (1) After dissolving polymaleic anhydride in water in the reaction kettle and stirring uniformly, add polyaspartic acid to the reaction kettle, and continue to stir for 20-30 minutes;

[0031] (2) Add zinc salt and water to the reaction kettle at room temperature and stir to fully dissolve the zinc salt, then add sodium polyepoxysuccinate and stir for 20-30 minutes;

[0032] (3) Finally, add...

Embodiment 2

[0033] Example 2: A scale and corrosion inhibitor for bactericidal seawater desalination according to the present invention, and its ingredients are as follows:

[0034]

[0035] Among them, the solid content of polyquaternary ammonium salt is ≥40%; the molecular weight of sodium polyepoxysuccinate is in the range of 800-1500; and the polyaspartic acid-polymaleic anhydride complex has an average molecular weight of polymaleic anhydride greater than 5500. And the ratio of the two is 2:3; the zinc salt is zinc sulfate.

[0036] The steps of the preparation method of the present invention are:

[0037] (1) After dissolving the polymaleic anhydride in water in the reaction kettle and stirring evenly, add the polyaspartic acid to the reaction kettle and continue stirring for 20-30 minutes;

[0038] (2) Add zinc salt and water to the reaction kettle at room temperature and stir to fully dissolve the zinc salt, then add sodium polyepoxysuccinate and stir for 20-30 minutes;

[0039] (3) Finall...

Embodiment 3

[0040] Example 3: A scale and corrosion inhibitor for bactericidal seawater desalination according to the present invention, and its ingredients are as follows:

[0041]

[0042]

[0043] Among them, the solid content of polyquaternary ammonium salt is ≥40%; the molecular weight of sodium polyepoxysuccinate is in the range of 800-1500; and the polyaspartic acid-polymaleic anhydride complex has an average molecular weight of polymaleic anhydride greater than 5500. And the ratio of the two is 2:3; the zinc salt is zinc sulfate.

[0044] The steps of the preparation method of the present invention are:

[0045] (1) After dissolving the polymaleic anhydride in water in the reaction kettle and stirring evenly, add the polyaspartic acid to the reaction kettle and continue stirring for 20-30 minutes;

[0046] (2) Add zinc salt and water to the reaction kettle at room temperature and stir to fully dissolve the zinc salt, then add sodium polyepoxysuccinate and stir for 20-30 minutes;

[0047] (...

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PUM

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Abstract

The invention provides a bactericidal scale and corrosion inhibitor for seawater desalination, and belongs to the technical field of chemical engineering. The bactericidal scale and corrosion inhibitor comprises, by weight, 10-15% of polyquaternary ammonium salt, 20-30% of sodium polyepoxysuccinate, 20-30% of polyaspartic acid-polymaleic anhydride, 5-10% of a zinc salt, 5-10% of dodecyl dimethyl benzyl ammonium bromide, and the balance of water. The bactericidal scale and corrosion inhibitor has scale inhibition, corrosion inhibition and sterilization functions, and all components of the bactericidal scale and corrosion inhibitor have very good intermiscibility, cooperativity and complementarity, so the bactericidal scale and corrosion inhibitor can substitute present single function scale and corrosion inhibitors and bactericides, and has comprehensive functions; and a formula and a preparation method of the bactericidal scale and corrosion inhibitor are green, compound raw materials adopted in the invention contain no phosphorus and cause no water eutrophication, discharged water causes no pollution to environment, and the preparation method is simple and feasible, is a clean technology, and has no emission of industrial three wastes.

Description

[0001] The invention relates to a bactericidal scale and corrosion inhibitor for seawater desalination, in particular to a scale and corrosion inhibitor with comprehensive functions, belonging to the technical field of chemical industry. Background technique [0002] With the rapid development of industrial production, industrial water consumption is increasing day by day, and our country is a country with relatively scarce fresh water resources, so the development of desalination technology is urgent. Desalination is the use of seawater desalination to produce fresh water. It is an open source incremental technology to realize the utilization of water resources. It can increase the total amount of fresh water and is not affected by time, space and climate. The water quality is good and the price is gradually reasonable. It can guarantee the stable water supply of coastal residents' drinking water and industrial boiler water supply. In the seawater desalination system, affected b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/50C02F5/10A01N33/12A01P1/00A01P3/00C02F103/08
Inventor 奚俊俊陈玉龙宁秀梅龙海丽
Owner 安徽省蓝天能源环保科技有限公司
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