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Non-phosphorus scale and corrosion inhibitor employing seawater as circulating cooling water, and preparation method thereof

A circulating cooling water, phosphorus-free anti-scaling technology, applied in chemical instruments and methods, water/sludge/sewage treatment, descaling and water softening, etc., can solve the problems of microbial algae overgrowth, seawater red tide, etc., and achieve high Corrosion and scale inhibition performance, good environmental protection effect

Active Publication Date: 2014-11-12
山东合润环境科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the corrosion and scale inhibitors in the current market are mainly based on phosphorus-based formulas. For seawater with many types of microorganisms and high content, phosphorus-based formulas will promote excessive reproduction of microorganisms, especially algae, and cause seawater red tides

Method used

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  • Non-phosphorus scale and corrosion inhibitor employing seawater as circulating cooling water, and preparation method thereof
  • Non-phosphorus scale and corrosion inhibitor employing seawater as circulating cooling water, and preparation method thereof
  • Non-phosphorus scale and corrosion inhibitor employing seawater as circulating cooling water, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Prepare 100g of phosphorus-free seawater corrosion and scale inhibitor solution: weigh 15g of sodium gluconate, 4g of zinc sulfate heptahydrate, and 0.8g of BTA, add 42.8g of deionized water and stir for 30 minutes, then add 3g of Mannich base quaternary ammonium salt in sequence , 8g aconitic acid-allyl sulfonic acid copolymer, 4g polyepoxysuccinic acid, 1g mango peel extract, stirred for 10 minutes, finally added remaining deionized water to make the weight of the solution 100g, stirred for 20 minutes, that is The required phosphorus-free seawater corrosion and scale inhibitor solution is obtained.

Embodiment 2

[0019] Prepare 100g of phosphorus-free seawater corrosion and scale inhibitor solution: weigh 10g of sodium gluconate, 3g of zinc sulfate heptahydrate, and 0.6g of BTA, mix them, add 34.3g of deionized water to dissolve, then add 2g of Mannich base quaternary ammonium salt, 20g Aconitic acid-allyl sulfonic acid copolymer, 8g of polyepoxysuccinic acid, 5g of citrus peel extract, stirred for 12 minutes, and finally added the remaining deionized water to make the weight of the solution 100g, stirred for 20 minutes to obtain The required phosphorus-free seawater corrosion and scale inhibitor solution.

Embodiment 3

[0021] Prepare 100g of phosphorus-free seawater corrosion and scale inhibitor solution: weigh 8g of sodium gluconate, 5g of zinc sulfate heptahydrate, and 1.1g of BTA, mix them, add 40.3g of deionized water and stir for 25 minutes, then add 5.5g of Mannich base quaternary ammonium in sequence Salt, 5g aconitic acid-allyl sulfonic acid copolymer, 10g polyepoxysuccinic acid, 4g mango peel extract, stirred for 15 minutes, finally added remaining deionized water to make the weight of the solution 100g, stirred for 30 minutes, That is, the required phosphorus-free seawater corrosion and scale inhibitor solution is obtained.

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Abstract

The invention belongs to the technical field of water treatment, and particularly relates to a non-phosphorus scale and corrosion inhibitor employing seawater as circulating cooling water and a preparation method thereof. The non-phosphorus scale and corrosion inhibitor is prepared from the following raw materials by weight percent: 2-6% of a mannich alkali quaternary ammonium salt, 5-20% of an aconitic acid-allyl sulfonate copolymer, 4-10% of a polyepoxysuccinic acid, 1-5% of a natural corrosion inhibitor, 5-15% of sodium gluconate, 3-5% of heptahydrate, 0.6-1.1% of BTA, and the balance of deionized water. The non-phosphorus scale and corrosion inhibitor has high scale and corrosion inhibitor performances, the problems of corrosion and scaling of the seawater as the circulating cooling water can be solved, and the non-phosphorus scale and corrosion inhibitor is especially suitable for various circulating water systems employing copper, carbon steel and stainless steel as materials, is free of phosphorus, and has good environmental protection property.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a phosphorus-free scale and corrosion inhibitor using seawater as circulating cooling water and a preparation method thereof. Background technique [0002] At present, my country's industrial water consumption accounts for more than 80% of the total water consumption, while the water consumption of thermal power plants accounts for about 20% of industrial water consumption. In order to save fresh water resources, some thermal power plants in my country's coastal areas began to use seawater as circulating cooling water, but because seawater is an electrolyte solution that can react with various substances, when seawater is used as circulating water, seawater is equivalent to electrolyte solution and metal It can form a battery to undergo electrochemical reactions, which can easily cause corrosion damage and failure of materials and equipment. Therefore, it is n...

Claims

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Application Information

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IPC IPC(8): C02F5/10C02F5/12
Inventor 鲁登强王华高新鲁峻岐
Owner 山东合润环境科技有限公司
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