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Non-phosphate anti-incrustation corrosion inhibitor and preparation process thereof

A phosphorus-free scale and corrosion inhibitor technology, applied in the field of water treatment, can solve the problems of large amount of scale and corrosion inhibitors and bactericides, difficult recycling of circulating discharge water, and fouling of reuse systems, etc. usage, ensure safe and stable operation, and reduce processing costs

Inactive Publication Date: 2011-04-13
李秀宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of non-phosphorous scale and corrosion inhibitor for treating open circulating cooling water, to solve the pollution of the environment by phosphorus in the prior art, to deteriorate the water quality, and the consumption of scale and corrosion inhibitors and bactericides is large, High cost of water treatment
Circulating discharge water is difficult to recycle, and in the process of reuse of discharge water, there are problems such as fouling of the reuse system due to incompatible chemicals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take the treatment of low-alkali and low-hard water as an example. After rinsing the reactor, inject 8% deionized water, add 10% sodium hydroxide, turn on the mixer, stir to dissolve, and then add 40% sodium polyepoxysuccinate , Hydrolyze 5% polymaleic anhydride, 5% acrylic acid / ethyl acrylate / 2-acrylamide-2-methylpropanesulfonic acid copolymer, turn on the heating or condensing device, keep the temperature at 28°C, and then add solid corrosion inhibitors in sequence Add 1% tolyltriazole, 1% sodium tungstate, and 10% sodium gluconate to the ingredients, raise the temperature to 40°C and keep the reaction for 40 minutes, turn on the condensing circulating water, lower the temperature to 25°C, add 10% imidazoline, and stir After 10 minutes, mix in 10% fluorescent indicator, stir for 10 minutes, open the discharge valve, filter the above liquid medicine and put it into a packaging barrel to obtain the phosphorus-free scale and corrosion inhibitor of the present invention. ...

Embodiment 2

[0029] Take the treatment of medium-alkali and medium-hard water as an example. After rinsing the reactor, inject 2% deionized water, add 10% sodium hydroxide, turn on the mixer, stir to dissolve, and then add 45% of the antiscaling component polyepoxysuccinate sodium , Hydrolyzed polymaleic anhydride 7%, acrylic acid / ethyl acrylate / 2-acrylamide-2-methylpropanesulfonic acid copolymer 7%, turn on the heating or condensing device, keep the temperature at 28°C, and then add solid corrosion inhibitors in sequence Add 2% tolyltriazole, 1% sodium tungstate, and 8% sodium gluconate for the ingredients, raise the temperature to 40°C and keep the reaction for 40 minutes, turn on the condensing circulating water, lower the temperature to 25°C, add 10% imidazoline, and stir After 10 minutes, add 8% fluorescent indicator, stir for 10 minutes, open the discharge valve, filter the above liquid medicine and put it into a packaging barrel to obtain the non-phosphorous scale and corrosion inhib...

Embodiment 3

[0033] Take the treatment of high-alkali and low-hard water as an example. After rinsing the reactor, inject 4% deionized water, add 10% sodium hydroxide, turn on the mixer, stir to dissolve, and then add 40% sodium polyepoxysuccinate , Hydrolyze 5% polymaleic anhydride, 5% acrylic acid / ethyl acrylate / 2-acrylamide-2-methylpropanesulfonic acid copolymer, turn on the heating or condensing device, keep the temperature at 28°C, and then add solid corrosion inhibitors in sequence Add 3% tolyltriazole, 3% sodium tungstate, and 10% sodium gluconate for the ingredients, raise the temperature to 40°C and keep the reaction for 40 minutes, turn on the condensing circulating water, lower the temperature to 25°C, add 12% imidazoline, and stir After 10 minutes, add 8% fluorescent indicator, stir for 10 minutes, open the discharge valve, filter the above liquid medicine and put it into a packaging barrel to obtain the non-phosphorous scale and corrosion inhibitor of the present invention.

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Abstract

The invention relates to a non-phosphate anti-incrustation corrosion inhibitor and a preparation process thereof. The non-phosphate anti-incrustation corrosion inhibitor is prepared from anti-incrustation ingredients, corrosion inhibition ingredients, fluorescent indicators, sodium hydroxide and deionized water, wherein the anti-incrustation ingredients comprise polyepoxysuccinic acid, hydrolytic polymaleic anhydride, and crylic acid / ethyl acrylate / 2-acrylamide-2-methyl propane sulfonic acid copolymer; and the corrosion inhibition ingredients comprise methylbenzotriazole, sodium gluconate, sodium tungstate and corrosion inhibitor-imidazoline quaternary ammonium salt. The preparation process comprises the following steps: alkalizing the raw materials by utilizing solvent, stirring, mixing, warming up for dissolving, cooling for mixing, carrying out fluorescer formulation, filtering and packaging, thus obtaining the finished product non-phosphate anti-incrustation corrosion inhibitor. The components of raw materials in the invention does not contain substances such as phosphor and the like which are harmful to human body and environment, and the non-phosphate anti-incrustation corrosion inhibitor belongs to a non-toxic nuisanceless product, has good anti-incrustation corrosion inhibition effect, is beneficial to recycling of recirculating water and discharging water, does not cause drug dirt blocking to a recovery system, is biodegradable, does not cause secondary pollution, and has the function of inhibiting the bacterium growth, thus the cost for recirculating water treatment is low and the on-line monitoring control and automatic feed of the drugs can be realized.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a circulating water treatment water quality stabilizer and a preparation process. technical background [0002] At present, the industrial circulating water treatment chemicals are still mainly phosphorus-containing chemicals. After decades of development, this kind of medicament has basically matured in technology, and the treatment effect can meet the standards of the country or related industries. But they also have many major drawbacks: 1. Huge damage has been caused to the environment. As we all know, phosphorus is an important nutrient source for various algae and plankton. The massive discharge of circulating water wastewater has led to a sudden increase in phosphorus nutrient sources in water bodies, which in turn leads to eutrophication of water bodies, a decrease in dissolved oxygen in water bodies, and deterioration of water quality. , a large number of fish an...

Claims

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Application Information

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IPC IPC(8): C02F5/12
Inventor 李秀宁
Owner 李秀宁
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