Water treatment agent for daily maintaining open-type cooling water system

A cooling water system and daily maintenance technology, applied in the chemical field, can solve the problems of poor rust effect on the surface of heat exchange tubes and reduce the heat exchange effect of heat exchangers, etc., to ensure normal and continuous operation, meet design requirements, and effectively prevent The effect of dirt

Inactive Publication Date: 2009-10-21
SHANGHAI WANSEN WATER TREATMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a water treatment agent for the daily maintenance of the open cooling water system. The rust effect on the surface of the heat exchange tube of the heat exchanger is not good, thereby reducing the technical problem of the heat exchange effect of the heat exchanger

Method used

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Embodiment Construction

[0012] The present invention is a water treatment agent for daily maintenance of an open cooling water system, wherein 2-phosphonic acid-1,2,4-tricarboxylic butane accounts for 50% by weight of the water treatment agent, hydrolysis and polymerization Maleic anhydride accounts for 9% by weight of the water treatment agent, zinc sulfate accounts for 2% by weight of the water treatment agent, and sodium lignosulfonate accounts for 0.8% by weight of the water treatment agent. %, the surfactant accounts for 4% by weight of the water treatment agent, and the balance is water.

[0013] In the open circulating cooling water system, add the above-mentioned medicament to maintain the normal operation of the system and discharge sewage. It was found that the fouling phenomenon was effectively controlled, and even the old scale on the surface of the equipment could gradually fall off, and there was basically no visible corrosion on the metal surface.

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PUM

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Abstract

The invention relates to a water treatment agent for daily maintaining an open-type cooling water system, which comprises addition agent and medicine, wherein the medicine comprises the following components according to the weight percent: 40-60 of 2-phosphonate-1, 2, 4-tricarboxylic butane, 8-10 of hydrolytic polymaleic anhydride, 1-3 of zinc sulfate and 0.8-1 of sodium lignosulphonate; the addition agent contain surface active agent and water, the medicine occupies 50-89 percent of the water treatment agent, and the balance is the addition agent. The invention reasonably matches by utilizing cooperative synergistic function among a plurality of medicines, can effectively inhibit scale and corrosion under the condition of higher multiple of concentration, achieves the purpose of saving water resource and solving the environment problem caused by the pollution discharge, meets the design requirement of a water treatment system, and ensures the normal continuous operation of the system.

Description

Technical field: [0001] The invention belongs to the chemical field and relates to a medicament, in particular to a water treatment medicament for daily maintenance of an open cooling water system. Background technique: [0002] In the circulating cooling water system, water is often used as the cooling medium of the system. Various salts are dissolved in natural water or tap water, among which dissolved bicarbonate such as (Ca(HCO 3 ) 2 , Mg(HCO 3 ) 2 ) is the most and the most unstable. In the process of circulating concentration, it is easy to decompose and generate tiny crystals of carbonate. When the water flow rate is relatively small or the heat transfer surface is relatively rough, the crystals will be deposited on the surface of the heat transfer tube of the heat exchanger. In addition, when the anti-corrosion measures are not taken properly, the surface of the heat exchange tube of the heat exchanger often has rust spots attached. The existence of these attac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14
Inventor 沈志昌
Owner SHANGHAI WANSEN WATER TREATMENT CO LTD
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