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Composite water treating agent for central air conditioner freezing water

A water treatment agent, central air conditioning technology, applied in water/sludge/sewage treatment, complex/solubilizer treatment, descaling and water softening, etc. Effect

Active Publication Date: 2006-12-20
SHANGHAI EMPEROR OF CLEANING HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two documents only made a preliminary theoretical study on the single application effect of the specific compound formula containing rare earth elements on the scale or corrosion inhibition in water treatment, and further research is needed to combine the dual synergistic effect of corrosion inhibition and scale inhibition Other compound formulas containing rare earth elements are beneficial to practical industrial applications, especially the development of water treatment agent compound formulas for central air-conditioning chilled water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Preparation of composite water treatment agent: 5mg 2-phosphonic acid butane-1,2,4-tricarboxylic acid (PBTCA), 5mg molybdate Na 2 MoO 4 2H 2 O (in MoO 4 2- meter), 1mg benzotriazole (BTA), 1mg cerium nitrate, 1mg ZnSO 4 ·H 2 O (in Zn 2+ meter) and 1L of water are placed in a stirring container and mixed uniformly, which is the normal water treatment agent of the present invention.

Embodiment 2

[0019] Preparation of composite water treatment agent: 7mg 2-phosphonic acid butane-1,2,4-tricarboxylic acid (PBTCA), 2mg Na 2 MoO 4 2H 2 O (in MoO 4 2- meter), 1mg benzotriazole (BTA), 0.5mg lanthanum nitrate, 1mg ZnSO 4 ·H 2 O (in Zn 2+ meter) and 1L of water are placed in a stirring container and mixed uniformly, which is the normal water treatment agent of the present invention.

Embodiment 3

[0021] Preparation of composite water treatment agent: 2mg 2-phosphonic acid butane-1,2,4-tricarboxylic acid (PBTCA), 5mg Na 2 MoO 4 2H 2 O (in MoO 4 2- meter), 1mg benzotriazole (BTA), 1.5mg praseodymium nitrate, 1mg ZnSO 4 ·7H 2 O (in Zn 2+ meter) and 1L of water are placed in a stirring container and mixed uniformly, which is the normal water treatment agent of the present invention.

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PUM

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Abstract

The invention discloses a treating agent of cooling water and composite water in central air-conditioning, including the weight or portioning components listed as following: one to ten portion of organic phosphinic acid compounds; one to ten portion of molybdate calculated according to molybdic acid ion; 0.1 to ten portion of rare-earth element salts; one to five portion of copper inhibitor; zero to two portion of zinc calculated according to zinc ion. This invention is low-phosphorus and environment-friendly type, good quality in antisludging and corrosion inhibit, easy to obtain material, explore the application area of using rare-earth element in water treatment, and have greatly active meaning in developing rare earth project of our country.

Description

technical field [0001] The invention relates to a composite water treatment agent, in particular to a composite water treatment agent for central air-conditioning chilled water. Background technique [0002] The circulating water of the central air conditioner is divided into circulating cooling water and circulating chilled water. The circulating chilled water is usually soft water as the circulating water. The content of calcium and magnesium ions is very low. The circulation system is a closed circulation system. The water does not evaporate or concentrate, and the system mainly produces metal corrosion. , Corrosion products increase the thermal resistance of the heat exchange surface and the roughness of the metal surface, thereby promoting deposition and scaling. In order to prevent the formation of scale, inhibit the growth and reproduction of microorganisms, control the corrosion of equipment and pipelines, improve heat exchange efficiency, and save Energy, to prolong...

Claims

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Application Information

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IPC IPC(8): C02F5/08C02F5/14
Inventor 王炜
Owner SHANGHAI EMPEROR OF CLEANING HI TECH
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