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Phosphorus-free pre-filming agent for circulating cooling water and application of phosphorus-free pre-filming agent

A technology of circulating cooling water and phosphorus pre-filming agent, applied in the direction of metal material coating process, etc., can solve the problems of film formation and corrosion resistance that are difficult to reach the level of phosphorus-containing pre-filming agent, and limited non-phosphorus anti-corrosion raw materials. , to achieve the effect of low cost, good film forming effect and obvious color

Pending Publication Date: 2021-11-26
洛阳强龙实业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to limited phosphorus-free anti-corrosion raw materials, the film-forming and corrosion-resistant effects of existing phosphorus-free prefilming agents are difficult to reach the level of phosphorus-containing prefilming agents

Method used

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  • Phosphorus-free pre-filming agent for circulating cooling water and application of phosphorus-free pre-filming agent
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  • Phosphorus-free pre-filming agent for circulating cooling water and application of phosphorus-free pre-filming agent

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the present invention implementation, but not all implementations.

[0025] Accordingly, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the prese...

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Abstract

The invention discloses a phosphorus-free pre-filming agent for circulating cooling water and application of the phosphorus-free pre-filming agent, and relates to the technical field of circulating water treatment. The phosphorus-free pre-filming agent comprises zinc salt and sodium salt, and further comprises potassium persulfate for film-forming synergism and triethanolamine for assisting in dissolution, so that the purpose that the effect of the phosphorus-free pre-filming agent is superior to that of a phosphorus-containing pre-filming agent is achieved.

Description

technical field [0001] The invention relates to the technical field of circulating water treatment, in particular to a phosphorus-free prefilming agent for circulating cooling water and its application. Background technique [0002] Phosphorus-based water treatment agents in the stable treatment of circulating cooling water have long-term occupation of water because of their dual functions of corrosion inhibition and scale inhibition, low dosing mass concentration (with solubility limit effect or complex solubilization) and high cost performance. Dealing with the market (from the early 70s to the present). In recent years, due to the global emphasis on environmental protection, developed countries in Europe and the United States have already begun to ban and limit phosphorus; my country has also followed closely: environmental protection requires that the total phosphorus in discharged water should be less than 0.5mg / L. At present, many regions in our country, especially th...

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Application Information

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IPC IPC(8): C23C22/68
CPCC23C22/68
Inventor 杜刚秦进良秦光宇关晶晶李晓辉薛晓东王朝霞
Owner 洛阳强龙实业有限公司