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Non-phosphorus composite scale and corrosion inhibitor and preparation method thereof

A scale and corrosion inhibitor, phosphorus-free scale inhibition technology, applied in the chemical field, can solve the problems of aggravating the eutrophication of water bodies, achieve the effect of less usage, prevent the formation of various scales, and ensure normal operation

Inactive Publication Date: 2018-05-11
唐山市金沙工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most common scale and corrosion inhibitors are phosphorus-containing chemicals, which have a certain effect on preventing scale and metal corrosion. However, the long-term use of phosphorus-based chemicals has created new problems. The total phosphorus in sewage discharge has received a certain limit.
[0006] At the same time, the extensive use of phosphorus-containing chemicals has aggravated the eutrophication of water bodies

Method used

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  • Non-phosphorus composite scale and corrosion inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Raw materials are calculated by weight

[0039] step one:

[0040] Check whether the reactor is clean, close the valves, and add 24 parts of water to the reactor.

[0041] Step two:

[0042] Add 12 parts of zinc sulfate into the reaction kettle, raise the temperature to 50°C, and stir until completely dissolved.

[0043] Step three:

[0044] Add 13 parts of sodium gluconate to the reaction kettle and stir until all of them are dissolved.

[0045] Step four:

[0046] Add 15 parts of acrylic acid, 20 parts of polyaspartic acid, 1 part of mercaptobenzothiazole, and 15 parts of acrylic acid-2-acrylamido-2'-methylpropylsulfonic acid copolymer to the reactor in turn, mix and stir .

[0047] Step five:

[0048] After sampling and testing are qualified, the material is released, labeled and put into storage.

Embodiment 2

[0050] Raw materials by weight

[0051] step one:

[0052] Check whether the reactor is clean, close each valve, and add 29 parts of water to the reactor.

[0053] Step two:

[0054] Add 12 parts of zinc chloride into the reaction kettle, raise the temperature to 50°C, and stir until completely dissolved.

[0055] Step three:

[0056] Add 15 parts of sodium gluconate to the reaction kettle, and stir until it is completely dissolved.

[0057] Step four:

[0058] Add 13 parts of polymaleic anhydride, 15 parts of polyaspartic acid, 1 part of mercaptobenzothiazole, and 15 parts of acrylic acid-2-acrylamide-2'-methylpropyl sulfonic acid copolymer in order Mix and stir.

[0059] Step five:

[0060] After sampling and testing are qualified, the material is released, labeled and put into storage.

Embodiment 3

[0062] Raw materials by weight

[0063] step one:

[0064] Check whether the reactor is clean, close the valves, and add 32 parts of water to the reactor.

[0065] Step two:

[0066] Add 12 parts of zinc chloride into the reaction kettle, raise the temperature to 55°C, and stir until completely dissolved.

[0067] Step three:

[0068] Add 10 parts of sodium gluconate to the reaction kettle, and stir until completely dissolved.

[0069] Step four:

[0070] Add 15 parts of polymaleic acid, 15 parts of polyaspartic acid, 1 part of mercaptobenzothiazole, and 15 parts of acrylic acid-2-acrylamide-2'-methylpropylsulfonic acid copolymer into the reaction kettle in sequence Mix and stir.

[0071] Step five:

[0072] After sampling and testing are qualified, the material is released, labeled and put into storage.

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Abstract

The invention relates to a non-phosphorus composite scale and corrosion inhibitor and a preparation method thereof. The inhibitor is prepared from, by mass, 10-20 parts of polycarboxylate, 15-30 partsof amino acid polymers, 10-15 parts of zinc salt, 10-15 parts of sodium salt, 1-2 parts of copper corrosion inhibitor, 10-20 parts of sulfonic acid polymers and the balance water. The preparation method of the inhibitor comprises the steps that the water and the zinc salt are added into a reaction kettle by weight and heated to 40-55 DEG C, and the sodium salt is added to the reaction kettle andstirred till the sodium salt is completely dissolved; polycarboxylate, amino acid polymers, the copper corrosion inhibitor and sulfonic acid polymers are added to the reaction kettle in sequence and mixed; sampling is conducted, materials are taken out after detection is qualified, and labeling and warehousing are conducted. The non-phosphorus composite scale and corrosion inhibitor is applied tocirculation cooling water, has the efficient scale inhibition effect and causes no pollution to the environment, adsorption film and sedimentation film which can be formed on the metal surface have the corrosion inhibition effect, formation of all kinds of scale is prevented, and it is guaranteed that a system runs normally.

Description

technical field [0001] The invention relates to water treatment technology in the chemical field, in particular to a phosphorus-free composite scale and corrosion inhibitor for industrial circulating water and a preparation method thereof. Background technique [0002] my country's water shortage situation is severe, and industrial water consumption, which consumes a huge amount, is bound to bear the brunt of serious challenges. In industrial water consumption, cooling water accounts for a large proportion. Industrial cooling water accounts for 80-90% of industrial water use, while the utilization rate of industrial reuse water only accounts for 20-30%, which is 1 / 3 of developed countries. Therefore, it is imperative to strengthen the operation and management of industrial circulating cooling water. [0003] At present, the more common way to save water is to recycle the cooling water after a certain treatment, and replace the original once-through water with the recycled ...

Claims

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Application Information

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IPC IPC(8): C02F5/10C02F5/12C02F5/08
CPCC02F5/105C02F5/125
Inventor 张会红马怡琳白坤歌裴红莲霍彩霞
Owner 唐山市金沙工贸有限公司
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