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Water treatment corrosion inhibitor and water treatment agent containing same

A technology of water treatment agent and corrosion inhibitor, which is applied in water/sludge/sewage treatment, descaling and water softening, chemical instruments and methods, etc. It can solve the problem that the unit is difficult to operate safely, so as to promote rapid development, Expand the application range and increase the effect of adsorption coverage

Inactive Publication Date: 2014-03-26
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, my country's generating units are developing into subcritical and supercritical pressure units. If no countermeasures are taken for the corrosion of thermal equipment, the units will be difficult to operate safely.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Weigh 0.025g of sodium humate solid and add it to 1L of tap water, then add 0.1g of sodium hydroxide to adjust its pH value to 8.0-9.0, filter it with a circulating water-type multipurpose vacuum pump, and take 500mL of filtrate for later use . Weigh 0.25g of sodium silicate, 0.2g of sodium dodecylbenzenesulfonate, 0.15g of hexamethylenetetramine and 0.1g of sodium oleate into the prepared 500mL alkaline sodium humate solution and mix well . Take a low-carbon steel sheet (1.5cm×2.0cm), put it into the above solution, control the temperature of the solution at 35°C during the day and 25°C at night, and observe that the carbon steel sheet begins to corrode for 58 days.

Embodiment 2

[0016] Weigh 0.025g of sodium humate solid and add it to 1L of tap water, then add 0.1g of sodium hydroxide to adjust its pH value to 8.0-9.0, filter it with a circulating water-type multipurpose vacuum pump, and take 500mL of filtrate for later use . Weigh 0.25g of sodium silicate, 0.5g of sodium dodecylbenzenesulfonate, 0.25g of hexamethylenetetramine and 0.1g of sodium oleate into the prepared 500mL alkaline sodium humate solution and mix well . Take a low-carbon steel sheet (1.5cm×2.0cm), put it into the above solution, control the temperature of the solution at 35°C during the day and 25°C at night, and observe that the carbon steel sheet begins to corrode for 65 days.

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Abstract

The invention provides a water treatment corrosion inhibitor and a water treatment agent containing the same. The water treatment corrosion inhibitor is prepared from sodium silicate, sodium oleate, sodium dodecyl benzene sulfonate and hexamethylenetetramine, wherein the addition of various components in each liter of water to be processed is as follows: 0.1-2g of sodium silicate, 0.02-2g of sodium oleate, 0.1-2g of sodium dodecyl benzene sulfonate, and 0.05-2g of hexamethylenetetramine; and the water treatment agent comprises sodium humate and a corrosion inhibitor. The corrosion inhibitor disclosed by the invention is free of poison and pollution, and can be compounded with a sodium humate water treatment agent for use. The corrosion inhibitor can generate a synergistic effect together with sodium humate; the functions of the anti-scaling action, the contaminant separation, sterilization and algae removal, and corrosion inhibition are fully developed; and the sodium humate water treatment agent product is further perfected.

Description

technical field [0001] The present invention relates to a formulation for water treatment. Background technique [0002] In modern industrial circulating cooling water systems, traditional phosphorus-based water treatment agents are usually used to control the scaling and corrosion problems of the system. However, phosphorus-based water treatment agents easily interact with Ca in cooling water 2+ and Mg 2+ Waiting for the reaction to generate secondary scale, and the scale is unevenly distributed in the system; the phosphorus in the system provides a nutrient source for the bacteria and algae, which makes the bacteria and algae grow wildly and produces biological slime, which must be sterilized by using a fungicide. The cooling wastewater discharged from the system not only pollutes the environment, but also tends to eutrophicate the water body and cause red tides. Therefore, replacing phosphorus-based formula water treatment agents has become an important and urgent task...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/12
Inventor 王桂香邹云王洋洋张晓红马福秋
Owner HARBIN ENG UNIV
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