Multifunctional anti-incrustation corrosion inhibitor and preparation method thereof

A technology of scale and corrosion inhibitor and preparation method, applied in complex/solubilizer treatment and other directions, can solve problems such as single function, inability to use negative hard water, equipment corrosion, etc., and achieve high concentration ratio, water saving, simple production. Effect

Inactive Publication Date: 2010-09-22
HANDAN AOBO WATER TREATMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, people need to deal with scaling of industrial circulating cooling water system, heating network system and boiler water under the condition of shutting down and stopping production. The descaling of the former two requires acid cleaning, which not only affects normal production Corrosion of the equipment itself is caused, and the boiler is treated with alkali to soften the scale, which not only has a certain degree of corrosion, but sometimes requires manual hammering and shoveling to remove it, which is time-consuming and laborious
In addition, in the existing water treatment agents, different treatment agents are used to remove scale in different systems, and the functions are single, such as: those with anti-scaling functions have no anti-scaling function, and those with anti-scaling functions have no anti-scaling function. Those used in cooling water cannot be used in heating networks or low-pressure boilers, those used in surface water cannot be used in groundwater, those used in high alkali and high hard water cannot be used in negative hard water, and those used in low concentration ratios cannot be used in high concentration. magnification, etc. Therefore, the existing water treatment agent formulations are varied, causing a lot of inconvenience in the process of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add 188L of water to the reaction vessel, weigh 50kg of sodium tripolyphosphate added with phosphate and stir to dissolve, then add 50kg of sulfamic acid as sulfonate and stir to dissolve, then add aminotrimethyl phosphonate to the solution 450kg liquid of pyridene phosphonic acid and ethylenediamine tetramethylene phosphonic acid, 250kg liquid of polyacrylic acid of polycarboxylates are stirred and mixed, finally add benzotriazole 12kg of azoles, under the normal temperature condition of preparation, constantly stir, obtain Brown or orange transparent liquid finished product.

[0031] After testing, it meets the standards of DL / T806-2002 "Scale and Corrosion Inhibitors for Circulating Cooling Water in Thermal Power Plants" and SH260407-2003 "Petrochemical Industry", the list is as follows:

[0032] DL / T806-2002 standard

[0033] Test items

[0034] Note: The product indicators of SH260407-2003 "Petrochemical Industry" are the same except those in brackets. ...

Embodiment 2

[0036] Add 290L of water to the reaction vessel, weigh 100kg of trisodium phosphate added with phosphate and stir to dissolve, then take 100kg of alkylsulfonic acid of sulfonate and stir to dissolve, then add ethylene diphosphate of phosphonate to the solution. Amine tetramethylene phosphonic acid and hydroxyethylidene diphosphonic acid 350kg liquid, polycarboxylic acid sodium polyacrylate and hydrolyzed polymaleic anhydride 150kg liquid are stirred and mixed, and finally azole methyl benzothiazole 10kg is added, prepared at room temperature Stir continuously under the same conditions to obtain a brown-yellow or orange-yellow transparent liquid product.

Embodiment 3

[0038] Add 392L of water to the reaction vessel, weigh 150kg of sodium tripolyphosphate added with phosphate and stir to dissolve, then add 150kg of alkylsulfonic acid of sulfonate and stir to dissolve, then add aminotrimethyl phosphonate to the solution 250kg liquid of pyridine phosphonic acid and hydroxyethylidene diphosphonic acid, 50 kg liquid of hydrolyzed polymaleic anhydride of polycarboxylates are stirred and mixed, finally add 8 kg of mercaptobenzothiazole of azoles, under the condition of normal temperature of preparation, constantly stir, obtain Brown or orange transparent liquid finished product.

[0039] Embodiment 2, 3 finished products all meet embodiment 1 and show product index standard after testing (concrete data is omitted)

[0040] The product of the present invention is tested in an industrial production system, and has achieved very good scale inhibition and descaling effects:

[0041] For example: A coal mine power plant in Shanxi: 2×50mw generating un...

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Abstract

The invention discloses a multifunctional anti-incrustation corrosion inhibitor and a preparation method thereof. The multifunctional anti-incrustation corrosion inhibitor is used as a water treatment agent for industrial circulating cooling water, a heating network system and a low-pressure boiler and is prepared from the following components in percentage by mass: phosphate, sulfonate, phosphonate, polycarboxylic acid, azoles and water. The preparation method comprises the following steps of: sequentially adding the components into a reaction vessel at normal temperature, and then stirring, dissolving and mixing to form a finished product. The multifunctional anti-incrustation corrosion inhibitor confirms to the national DL / T806-2002 (electric power) and SH 260407-2003 (petrochemistry) standards of the anti-incrustation corrosion inhibitor for circulating cooling water, can be applied to various water treatment systems and used as the water treatment agent for water with various qualities, and can be directly applied to the water treatment system to play the roles of anti-incrustation, incrustation removal, corrosion mitigation and concentration ratio increase, thereby achieving the purposes of incrustation prevention and removal as well as water saving.

Description

technical field [0001] The invention relates to a multifunctional scale and corrosion inhibitor and a preparation method thereof, which are used as water treatment agents for industrial circulating cooling water, heating network systems and low-pressure boilers. Background technique [0002] At present, people need to deal with scaling of industrial circulating cooling water system, heating network system and boiler water under the condition of shutting down and stopping production. The descaling of the former two requires acid cleaning, which not only affects normal production The corrosion of the equipment itself is caused, and the boiler is treated by adding alkali to soften the scale. It not only has a certain degree of corrosion, but sometimes it needs to be manually hammered and smashed with a shovel to remove it, which is time-consuming and laborious. In addition, in the existing water treatment agents, different treatment agents are used to remove scale in different ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/08
Inventor 董兆祥
Owner HANDAN AOBO WATER TREATMENT
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