Method for treating circulating cooling water

A technology of circulating cooling water and treatment methods, applied in water/sludge/sewage treatment, water softening, chemical instruments and methods, etc., can solve the problem of low control ability and achieve the effect of increasing control ability

Active Publication Date: 2006-07-05
BEIJING YANHUA PETRO CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, there are no relevant reports at home and abroad, all of which use a formula an

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Taking by weighing 13.3g active components is that 50% HEDP is dissolved in 34.9g water, stirring and dissolving, then adding 16.7g active components is that 50% PBTCA, 33.3g solid content are 30% YSW301 (Luoyang Qianglong Chemical Co., Ltd. production, is AA / AMPS / HPA copolymer), finally add 1.7g of anhydrous zinc chloride and 5 drops of concentrated hydrochloric acid, make it fully dissolved, shake well, and obtain the first part of the 100g scale and corrosion inhibitor required for preparation .

[0043] Take by weighing 6.7g of PBTCA whose active component is 50%, 22.2g of YSW301 with a solid content of 30%, dissolve them in 55.6g of water, then add 8.7g of anhydrous zinc chloride and 5 drops of concentrated hydrochloric acid to make it fully dissolve, and finally Add 6.7g of sodium hexametaphosphate, shake well to dissolve, and obtain the second part of 100g of scale and corrosion inhibitor to be prepared.

[0044] When the first part of the prepared scale and cor...

Embodiment 2

[0048] Taking by weighing 20g active components is that 50% ATMP is dissolved in 25.6g water, stirring and dissolving, then adding 8.3g active components is 40% HPAA, 44.4g solid content is 30% YSW301 (produced by Luoyang Qianglong Chemical Co., Ltd. , is AA / AMPS / HPA copolymer), finally add 1.7g sodium tripolyphosphate, make it fully dissolved, shake well, and obtain the first part of 100g scale and corrosion inhibitor required for preparation.

[0049] Weigh 6.7g of ATMP whose active component is 50%, 16.7g of YSW301 with a solid content of 30%, dissolve them in 53.2g of water, then add 14.7g of zinc sulfate heptahydrate and 10 drops of sulfuric acid of 1:3 to fully dissolve , and finally add 3.3g of sodium tripolyphosphate and 5.3g of sodium dihydrogen phosphate, shake well and dissolve, and obtain the second part of 100g of scale and corrosion inhibitor to be prepared.

[0050] When the first part of the prepared scale and corrosion inhibitor is added to the test water at a...

Embodiment 3

[0054] Taking by weighing 26.7g active components is that 50% DETPMP is dissolved in 5.2g water, stirring and dissolving, then adding 12.5g active components is 40% HPAA, 55.6g solid content is 30% XF-3211 (Changzhou Jingkexia Produced by Feng Fine Chemical Co., Ltd., it is AA / AMPS copolymer), dissolve and shake well, and obtain the first part of 100 g scale and corrosion inhibitors to be prepared.

[0055] Weigh 11.1g of XF-3211 with a solid content of 30%, dissolve it in 61.6g of water, then add 14.7g of zinc sulfate heptahydrate and 10 drops of sulfuric acid of 1:3 to fully dissolve it, and finally add 10g of sodium hexametaphosphate and 2.5g of disodium hydrogen phosphate, shake well and dissolve to obtain the second part of 100g of scale and corrosion inhibitor to be prepared.

[0056] When the first part of the prepared scale and corrosion inhibitor is added to the test water at a concentration of 60 mg / L, the effective concentrations of DETPMP, HPAA, and XF-3211 in the ...

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PUM

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Abstract

This invention involves a process for treating circulating cooling water, comprising the steps of adding a first part compound inhibitor and an optional second part compound inhibitor into the circulating cooling water. The said first part compound inhibitor comprises organic phosphonate acid, phosphonate carboxylic acid, copolymers containing carboxyl and sulfonic groups, and optional zinc and polyphosphate salts. The second part compound inhibitor comprises zinc and polyphosphate salts, copolymers containing carboxyl and sulfonic groups, and optional phosphate salts, phosphonate carboxylic acid and organic phosphonate acid. This invention can solve such problems as agent treatment needed in the processes of acid-preset operation and acid-free operation brought about by the wide-range fluctuation of the quality of the circulating water. This invention also strengthens the controllability over the circulating water system, controlling the amount of the released agents in both parts according to different conditions of corrosion and scaling.

Description

technical field [0001] The invention relates to a method for treating circulating cooling water, in particular, it is suitable for treating circulating cooling water under the operating conditions of adding acid and not adding acid. Background technique [0002] The circulating water treatment process is mainly divided into two types: one is the natural pH operation process without acid addition, and the other is the pH adjustment process with acid addition. [0003] For the natural pH operation process without adding acid, the system does not add acid to adjust the pH value during operation, and the pH value of the circulating water is naturally balanced at about 9, which is generally suitable for water quality with medium-low hardness and medium-low alkalinity, and the calcium hardness and The sum of total alkalinity is less than 950mg·L -1 . The basic idea of ​​this process is to suppress the corrosion of the equipment through the high pH value in the alkaline state and...

Claims

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Application Information

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IPC IPC(8): C02F5/00C02F5/14C02F5/04
Inventor 任志峰郦和生李巍闫岩王辉刘金香王娜
Owner BEIJING YANHUA PETRO CHEM
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