Special corrosion and scale inhibitor for water reuse in power plant and preparation method thereof

A corrosion and scale inhibitor, reclaimed water technology, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc. No secondary pollution and other problems, to achieve the effect of obvious synergistic effect, improved effect, and good adsorption performance

Inactive Publication Date: 2015-08-19
山东应天环保能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few types of corrosion and scale inhibitors for reclaimed water reuse, with uneven performance, low scale inhibition performance, and single function. Most of them are phosphorus-containing formulas, which are easy to cause secondary pollution to water bodies, and do not meet the requirements of green environmental protection. , therefore, research and development of a multi-functional environment-friendly power plant reclaimed water reuse special corrosion and scale inhibitors is of wide application value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In this embodiment, the special corrosion and scale inhibitor for water reuse in power plants includes the following components in mass percentage:

[0046] Methylsulfonate polyepoxysuccinic acid 30%,

[0047] N, N'-Diacetyl adipamide 22%,

[0048] Maleic-Acrylic Copolymer 16%,

[0049] Graphene oxide aqueous dispersion 4%,

[0050] Fatty alcohol polyoxyethylene ether 5%,

[0051] Zinc sulfate aqueous solution 23%,

[0052] The mass fraction of the zinc sulfate aqueous solution is 12%.

[0053] The preparation method of the special corrosion and scale inhibitor for reuse of reclaimed water in the power plant in this embodiment is as follows:

[0054] Weigh sulfonate methylamino polyepoxysuccinic acid, N, N'-diacetyl adipic dihydrazide, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersion in proportion, and add them to the container in sequence. Mix, heat to 90°C, add zinc sulfate aqueous solution dropwise withi...

Embodiment 2

[0056] In this embodiment, the special corrosion and scale inhibitor for water reuse in power plants includes the following components in mass percentage:

[0057] Sulfonated methylamino polyepoxysuccinic acid 25%,

[0058] N, N'-Diacetyl adipamide 20%,

[0059] Maleic-acrylic acid copolymer 12%,

[0060] Graphene oxide aqueous dispersion 3%,

[0061] Fatty alcohol polyoxyethylene ether 3%,

[0062] Zinc sulfate aqueous solution 37%,

[0063] The mass fraction of the zinc sulfate aqueous solution is 12%.

[0064] The preparation method of the special corrosion and scale inhibitor for reuse of reclaimed water in the power plant in this embodiment is as follows:

[0065] Weigh sulfonate methylamino polyepoxysuccinic acid, N, N'-diacetyl adipic dihydrazide, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersion in proportion, and add them to the container in sequence. Mix, heat to 80°C, add zinc sulfate aqueous solut...

Embodiment 3

[0067] In this embodiment, the special corrosion and scale inhibitor for water reuse in power plants includes the following components in mass percentage:

[0068] Methylsulfonate polyepoxysuccinic acid 40%,

[0069] N, N'-Diacetyl adipamide 22%,

[0070] Maleic-acrylic acid copolymer 15%,

[0071] Graphene oxide aqueous dispersion 4%,

[0072] Fatty alcohol ethoxylates 4%,

[0073] Zinc sulfate in water 15%.

[0074] The mass fraction of the zinc sulfate aqueous solution is 12%.

[0075] The preparation method of the special corrosion and scale inhibitor for reuse of reclaimed water in the power plant in this embodiment is as follows:

[0076] Weigh sulfonate methylamino polyepoxysuccinic acid, N, N'-diacetyl adipic dihydrazide, maleic acid-acrylic acid copolymer and graphene oxide aqueous dispersion in proportion, and add them to the container in sequence. Mix, heat to 65°C, add zinc sulfate aqueous solution dropwise within 2.0 h...

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Abstract

The invention relates to a special corrosion and scale inhibitor for water reuse in a power plant and a preparation method thereof. The special corrosion and scale inhibitor comprises the following components by weight percentage content: 25 to 40% of sulfonic methane amino poly epoxy succinic acid, 20 to 30% of N, N-diacetyl adipic dihydrazide, 12 to 30% of maleic acid-acrylic copolymer, 3 to 5% of graphene oxide aqueous dispersion, 3 to 6% of fatty alcohol-polyoxyethylene ether and 15 to 40% of zinc sulfate aqueous solution. The components of the corrosion and scale inhibitor achieve a synergistic effect, and can realize trace removal of pollutants, after the corrosion and scale inhibitor is compounded, the corrosion and scale inhibition properties are greatly improved, the synergistic effect of physical adsorption and chemical adsorption of the pollutants can be effectively realized, and the special corrosion and scale inhibitor can be used in a wider water pH scope and temperature, and has an excellent sterilizing effect. The production process is simple, three-waste emission is avoided, the stability and water solubility are good, and the main components are biodegradable, free of toxic, phosphorus, pollution and corrosivity, less in adding rate, and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of water treatment and relates to a corrosion and scale inhibitor, in particular to a special corrosion and scale inhibitor for water reuse in power plants and a preparation method thereof. Background technique [0002] With the increasing shortage of fresh water resources, reclaimed water is considered as an important non-drinking water resource and is gradually applied to the industrial field. The industrial field is a large water user. 80% of urban water is industrial water, and industrial circulating cooling water accounts for more than 60% of industrial water, involving many industries such as petrochemical, electric power, chemical industry, and metallurgy. At present, many power plants use reclaimed water instead of fresh water as the supplementary water of the circulation system, especially in the southwestern United States, the way of utilization is to mix part of the reclaimed water with fresh ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12C02F5/10
Inventor 张宗峰张忠训杨森
Owner 山东应天环保能源有限公司
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