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Non-phosphorus scale and corrosion inhibitor

A technology of phosphorus-free scale and corrosion inhibitors, which is applied in the field of industrial circulating water treatment chemicals, can solve the problems of water quality deterioration, difficult recycling of circulating discharge water, and increased wastewater treatment costs.

Inactive Publication Date: 2009-10-28
李秀宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After decades of development, this kind of medicament has basically matured technically, and the treatment effect can reach the standards of the country or related industries, but they also have many major drawbacks: 1. It has caused huge damage to the environment. As we all know, phosphorus is the It is an important nutrient source for algae and plankton, and the massive discharge of circulating water wastewater has led to a sudden increase in phosphorus nutrient sources in the water body, which in turn leads to eutrophication of the water body, a decrease in dissolved oxygen in the water body, deterioration of water quality, fish and other A large number of biological deaths; 2. Increased the cost of wastewater treatment; 3. It is difficult to recycle the recycled water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) After rinsing the reactor, inject 300kg of deionized water and 350kg of polyepoxysuccinic acid, turn on the mixer, turn on the heating or condensing device, and keep the temperature at about 30°C;

[0023] (2) When the temperature reaches 30°C, add 15kg of methylbenzotriazole, keep the temperature at 45°C for ten to twenty minutes, then add 5.5kg of sodium tungstate, and stir at 45°C for 30 minutes;

[0024] (3), put into 80kg sodium gluconate at this time, keep stirring at a constant temperature of 40°C for about 20 minutes until the solution is transparent;

[0025] (4) Turn on the condensing circulating water, lower the temperature to about 30°C, add 55kg of imidazoline, and after mixing completely, add deionized water to make the solution reach a weight of one ton, and then stir for about half an hour until the solution is clear until transparent;

[0026] (5), open the discharge valve, filter the above liquid medicine into the packaging barrel to obtain the fi...

Embodiment 2

[0028] (1) After rinsing the reactor, inject 280kg of deionized water and 380kg of polyepoxysuccinic acid, turn on the mixer, turn on the heating or condensing device, and keep the temperature at about 30°C;

[0029] (2) When the temperature reaches 30°C, add 20kg of methylbenzotriazole, keep the temperature at 45°C for ten to twenty minutes, then add 7kg of sodium tungstate, and stir at 45°C for 30 minutes;

[0030] (3), drop into 85kg sodium gluconate at this time, keep stirring at a constant temperature of 40°C for about 20 minutes until the solution is transparent;

[0031] (4) Turn on the condensing circulating water, lower the temperature to about 30°C, add 70kg of imidazoline, and after mixing completely, add deionized water to make the solution reach a weight of one ton, and then stir for about half an hour until the solution is clear until transparent;

[0032] (5), open the discharge valve, filter the above-mentioned medicinal solution into the packaging barrel to o...

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PUM

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Abstract

The invention discloses a non-phosphorus scale and corrosion inhibitor, which is characterized by comprising the following productive raw materials by weight portion: 5 to 80 portion of deionized water, 5 to 60 portions of polyepoxysuccinic acid, 1 to 10 portions of methylbenzotriazole, 3 to 20 portions of sodium gluconate, 1 to 10 portions of imidazoline and 2 to 15 portions of sodium tungstate. The non-phosphorus scale and corrosion inhibitor is a completely non-phosphorus medicament. Experiments show that the non-phosphorus scale and corrosion inhibitor has a scale inhibition rate of above 95 percent, a stainless steel and copper corrosion rate of less than or equal to 0.005mm / a and a carbon steel corrosion rate of less than or equal to 0.075mm / a and realizes phosphor-free discharge, wherein both the scale inhibition rate and the corrosion inhibition rate reach related national and industrial standards. The non-phosphorus scale and corrosion inhibitor has the advantages of radically solving the problem of the discharge of phosphor in circulating water, laying a good foundation for the governance and recycling of discharge water and providing a new environmental protection means.

Description

technical field [0001] The invention relates to a water treatment agent in the field of environmental protection, in particular to a treatment agent for industrial circulating water. Background technique [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 technically, and the treatment effect can reach the standards of the country or related industries, but they also have many major drawbacks: 1. It has caused huge damage to the environment. As we all know, phosphorus is the It is an important nutrient source for algae and plankton, and the massive discharge of circulating water wastewater has led to a sudden increase in phosphorus nutrient sources in the water body, which in turn leads to eutrophication of the water body, a decrease in dissolved oxygen in the water body, deterioration of water quality, fish and other A large nu...

Claims

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Application Information

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IPC IPC(8): C02F5/08C23F11/00
Inventor 李秀宁
Owner 李秀宁
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