Scale inhibitor used for boiler circulating water

A technology of circulating water and scale inhibitor, applied in the field of water treatment, can solve the problems of high strength of circulating water, corrosion and scaling, serious scaling, etc., and achieve odorless dispersion performance, prevent scaling and blockage, and have good scale inhibition effect Effect

Inactive Publication Date: 2015-01-28
王兴霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Circulating water plays an important role in the boiler system, but the circulating water used has high strength, high alkalinity, and serious scaling characteristics. When the water temperature is higher than the ambient temperature In various occasions, the scaling of calcium carbonate and other inorganic salts will bring serious consequences
When it is used as a circulating medium in an industrial circulating water system, it will cause deterioration of water quality, corrosion and scaling, etc., resulting in blockage or leakage of boilers and their pipes, seriously affecting the normal operation of production equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A scale inhibitor for boiler circulating water, consisting of the following components by weight:

[0039] Sodium lignosulfonate 4 parts

[0040] Polyaspartic acid 1.5 parts

[0041] Tetrasodium edetate 6 parts

[0042] 1 part denim

[0043] Hypophosphorous acid copolymer sodium salt 1 part.

[0044] Using the scale inhibitor described in Example 1 makes the scale inhibition effect reach 99.18%, so that the scaling rate is reduced to 0.00319mm / a.

Embodiment 2

[0046] The scale inhibitor for boiler circulating water consists of the following components by weight:

[0047] Sodium lignosulfonate 5.72 parts

[0048] Polyaspartic acid 2.45 parts

[0049] Tetrasodium edetate 7.36 parts

[0050] Denim 1.25 parts

[0051] Hypophosphorous acid copolymer sodium salt 1.6 parts.

[0052] Using the scale inhibitor described in Example 2 makes the scale inhibition effect reach 99.217%, so that the scaling rate is reduced to 0.00263mm / a.

Embodiment 3

[0054] The scale inhibitor for boiler circulating water consists of the following components by weight:

[0055] Sodium lignosulfonate 6.45 parts

[0056] Polyaspartic acid 3.8 parts

[0057] Tetrasodium edetate 8.4 parts

[0058] Denim 1.32 parts

[0059] Hypophosphorous acid copolymer sodium salt 2.26 parts.

[0060] Using the scale inhibitor described in Example 3 makes the scale inhibition effect reach 99.38%, so that the scaling rate is reduced to 0.00254mm / a.

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PUM

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Abstract

The invention belongs to the technical field of water treatment and in particular relates to a scale inhibitor used for boiler circulating water. The scale inhibitor comprises the following components in parts by weight: sodium lignosulfonate, polyaspartic acid, ethylenediamine tetraacetic acid tetrasodium salt, tannin and sodium salt of a hypophosphorous acid copolymer. The scale inhibitor is convenient to use, has low toxicity, is tasteless and has good dispersibility.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a scale inhibitor for boiler circulating water. Background technique [0002] Circulating water plays a pivotal role in the boiler system, but the circulating water used has high strength and high alkalinity, and has serious scaling characteristics. When the water temperature is higher than the ambient temperature, the scaling of inorganic salts such as calcium carbonate will have serious consequences. When it is used as a circulating medium in an industrial circulating water system, it will cause deterioration of water quality, corrosion and scaling, etc., resulting in blockage or leakage of boilers and their pipes, seriously affecting the normal operation of production equipment. With the rapid development of social economy and technological progress, water treatment technology has been paid more and more attention. The use of water treatment chemicals can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14
CPCC02F5/145C02F2103/023C02F2305/04
Inventor 牟军平朱娜刘晓于春光
Owner 王兴霞
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