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Anti-incrustation corrosion inhibitor for circulating water system with high concentration time and high chloride ion content

A technology of circulating water system and scale and corrosion inhibitor, which is applied in the field of scale and corrosion inhibitor, can solve the problems of increased chloride ion concentration, difficult to achieve the expected effect of the artificial corrosion effect, etc., and achieves reduced dosage and good corrosion inhibition effect. , the effect of slowing down the corrosion rate

Inactive Publication Date: 2010-06-30
上海淼清水处理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the circulating water system operating at a high concentration multiple, due to the drop in pH and the increase in the concentration of chloride ions, the deposition of inorganic phosphate and organic phosphonate to simulate corrosion will be difficult to achieve the expected effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 15g PBTC (2-phosphonobutane-1,2,4 tricarboxylic acid), 10g DTPMP (diethylenetriaminepentamethylenephosphonic acid), 2gPAPE (polyol phosphonate), 5g methylbenzene Mix triazole and add pure water to dilute to 50g, prepare scale and corrosion inhibitor A, mix 45g acrylic acid / acrylic acid ester / acrylic acid-2-acrylamide-2-methylpropanesulfonic acid / phosphonic acid tetrapolymer with 15g After mixing zinc sulfate heptahydrate, add water to dilute to 50g, and prepare scale and corrosion inhibitor B. When in use, A and B are used as scale and corrosion inhibitors and added to circulating water at the same time.

Embodiment 2

[0031] Mix 10PBTC (2-phosphonobutane-1,2,4 tricarboxylic acid), 5g polyamino polyether phosphonate, 5g HPAA (hydroxyphosphine acetic acid), 4g tolyltriazole Scale and corrosion inhibitor A, mix 40g of phosphine-terminated acrylic acid / acrylic acid-2-acrylamide-2-methylpropanesulfonic acid / maleic anhydride copolymer with 5g of zinc chloride, add water to dilute to 50g, and prepare scale inhibitor etchant B. When in use, A and B are used as scale and corrosion inhibitors and added to circulating water at the same time.

Embodiment 3

[0033]Mix 15g PBTC, 2g trisodium phosphate, 6g polyamine polyether phosphonate, 5g methyl benzotriazole and dilute to 50g with water to prepare scale and corrosion inhibitor A, mix 60g acrylic acid / allylsulfonic acid / mass Toic anhydride terpolymer is mixed with 5g of zinc and then diluted to 50g with water to prepare scale and corrosion inhibitor B. A and B are used as scale and corrosion inhibitors and added to circulating water at the same time.

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PUM

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Abstract

The invention relates to an anti-incrustation corrosion inhibitor for a circulating water system with a high concentration time and a high chloride ion content. The anti-incrustation corrosion inhibitor comprises the following components in parts by weight: 1-100 parts of phosphoric acid and salt thereof, 1-500 parts of organic phosphonic acid and salt thereof, 5-1,000 parts of acrylic copolymer, 1-20 parts of zinc salt, 10-200 parts of anode corrosion inhibitor and 0.5-5 parts of imidazoline non-ferrous metal corrosion inhibitor. Compared with the prior art, the invention can effectively suppress under-deposit corrosion and point corrosion caused by low pH value and high chloride ion content.

Description

technical field [0001] The invention relates to a new material, in particular to a scale and corrosion inhibitor used in a circulating water system with high concentration ratio and high chloride ion content. Background technique [0002] In recent years, with the development of my country's industry and the increase of population, the shortage of water resources has become more and more serious, which has become the main factor restricting the development of some areas. [0003] One of the reasons for water shortage is that the development of industry makes the consumption of industrial water surge. Industrial water consumes a lot of water and is used intensively, so it has huge saving potential. For example, in the petrochemical industry, water consumption as equipment cooling medium accounts for about 60% of the total industrial water consumption. The recycling of cooling water can effectively improve the recycling rate of water, greatly save water and reduce sewage dis...

Claims

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Application Information

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IPC IPC(8): C02F5/08
Inventor 季淑浥蒋毅章
Owner 上海淼清水处理有限公司
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