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Composite-type water quality protective agent for household heating system

A heating system, a composite technology, used in descaling and water softening, water/sludge/sewage treatment, chemical instruments and methods, etc. Effect

Active Publication Date: 2014-01-22
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Anticorrosion and scale inhibitors and fungicides used in large hot water boiler systems need to be added to the system separately in order to achieve the desired effect when used. This dosing mode cannot meet the needs of the current home heating unit water system.
[0006] Commonly used metal corrosion inhibitors can only have a good corrosion inhibition effect on a single type of metal, and the small family heating system involves multi-metal materials, which cannot meet the needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In the present embodiment, the water quality protection agent contains components and weight percentages as follows: propylene glycol 8%, BTA 1.2%, HEDP 1.2%, sodium nitrite 2.5%, triethanolamine 12%, boric acid 6%, polymaleic anhydride 0.8% , 0.3% isothiazolinone, the balance of desalinated water.

[0019] The components with the above weight percentage content are added in sequence, and the finished product is obtained after being fully stirred evenly.

[0020] The finished product of this embodiment is brownish yellow or light yellow liquid, pH (concentrated solution) is 7.8 ± 0.2, specific gravity (g / cm 3 , 20°C) is 1.05±0.15.

[0021] Tested by China Boiler Water Treatment Association: the finished product of this embodiment has no scaling and corrosion inhibition rate of 96.8%; at the same time, it is tested by Shanghai Center for Disease Control and Prevention: the finished product of this embodiment is actually non-toxic; the field use results show that: No fo...

Embodiment 2

[0023] In the present embodiment, the water quality protection agent contains components and weight percentages as follows: propylene glycol 8%, BTA 1.2%, HEDP 1.2%, sodium nitrite 2.5%, triethanolamine 12%, boric acid 6%, sodium polyacrylate 0.8%, 0.3% isothiazolinone, the balance in desalinated water. Its preparation method is with embodiment 1.

[0024] Tested by China Boiler Water Treatment Association: the finished product of this example has no scaling and corrosion inhibition rate of 98.0%; at the same time, tested by Shanghai Center for Disease Control and Prevention: the finished product of this example is actually non-toxic; the field use results show that: No fouling, corrosion rate <0.070mm / a, antibacterial, bactericidal rate of 98.5%.

Embodiment 3

[0026] In this embodiment, the water quality protection agent contains components and weight percentages as follows: propylene glycol 6%, BTA 2.8%, sodium nitrite 3.5%, triethanolamine 11%, boric acid 8%, polymaleic anhydride 1%, isothiazoline Ketone 0.3%, the balance in addition to salt water. Its preparation method is with embodiment 1.

[0027] Tested by China Boiler Water Treatment Association: the finished product of this embodiment has no scaling and corrosion inhibition rate of 97.9%; at the same time, it is tested by Shanghai Center for Disease Control and Prevention: the finished product of this embodiment is actually non-toxic; the field use results show that: No fouling, corrosion rate <0.070mm / a, bacteriostatic, bactericidal rate of 99%.

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PUM

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Abstract

The invention relates to a composite-type water quality protective agent for a household heating system, wherein the composite-type water quality protective agent comprises the following components in percentage by weight: 3-20% of propylene glycol, 2.5-10% of corrosion inhibitor, 5-20% of triethanolamine, 3-10% of boric acid, 0.1-5% of dispersion agent, 0.1-2% of bacteriacide and the balance of water. The composite-type water quality protective agent provided by the invention is suitable for being used in a household heating system in China and has the effects of scale inhibition, corrosion inhibition, sterilization and the like, and has the anticipated effect in the household heating system, thus each device in the whole heating system can run safely and economically, and the aims of water pollution reduction and energy conservation and consumption reduction are achieved.

Description

technical field [0001] The invention relates to a water quality protecting agent, in particular to a composite water quality protecting agent used in a household heating system. Background technique [0002] With the improvement of people's living standards, small household heating systems are widely used. However, due to the lack of uniform standards for system water use, local tap water is generally used. During actual use, scaling, corrosion, and microbial growth occur in the system, resulting in system equipment damage, pipeline blockage, valve jamming, and local poor heat conduction. Therefore, it is extremely important to adjust the water quality of the system and take necessary anti-corrosion measures for metal materials. [0003] So far, there is no domestic water quality protection agent that is specially used for household heating systems and has effects such as scale inhibition, corrosion inhibition, and sterilization. [0004] The imported water quality protect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/12C02F5/14
Inventor 田瑞珍杨麟孙首文
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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