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A new type of corrosion and scale inhibitor for closed circulating water system and its application method

A corrosion and scale inhibitor, closed cycle technology, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc., can solve problems such as large workload, excessive corrosion, environmental hazards, etc. To achieve the effect of reducing the amount of tonic and workload, increasing the residence time, and improving the corrosion inhibition performance

Active Publication Date: 2022-04-08
中化化工科学技术研究总院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system is quite complicated. Every time a system is changed or a manufacturer is changed, a detailed on-site investigation is required, and technical services and post-maintenance bring a lot of workload; In systems such as demineralized water and pure water, the treatment effect of the agent is not good, and the corrosion is seriously exceeded; although some agent formulas have good corrosion inhibition effects, they are harmful to the environment. Therefore, it is necessary for us to treat them Systematically summarize and screen out general agents suitable for this type of system. These agents should have a wide range of applications (such as different water quality and different working conditions), good treatment effects and environmental friendliness

Method used

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  • A new type of corrosion and scale inhibitor for closed circulating water system and its application method
  • A new type of corrosion and scale inhibitor for closed circulating water system and its application method
  • A new type of corrosion and scale inhibitor for closed circulating water system and its application method

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Embodiment 1

[0027] A new type of corrosion and scale inhibitor for closed circulating water system, composed of the following components in mass percentage:

[0028]

Embodiment 2

[0030] A new type of corrosion and scale inhibitor for closed circulating water system, composed of the following components in mass percentage:

[0031]

Embodiment 3

[0033] A new type of corrosion and scale inhibitor for closed circulating water system, composed of the following components in mass percentage:

[0034]

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PUM

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Abstract

The invention relates to a novel corrosion and scale inhibitor for a closed circulating water system and a method for using the same, belonging to the technical field of closed system water treatment. The above-mentioned corrosion and scale inhibitor consists of the following components by mass percentage: 60-70% of soft water; 8-10% of alkalinity regulator; 5-10% of organic amine; 4-10% of molybdate; Butane 1,2,4-tricarboxylate 5‑10%. The corrosion and scale inhibitor of the invention has excellent corrosion inhibition, the annual corrosion rate of carbon steel is lower than 0.075mm / a, and the annual corrosion rate of stainless steel, copper and copper alloy is lower than 0.005mm / a.

Description

technical field [0001] The invention relates to the technical field of water treatment in a closed system, and specifically provides a novel corrosion and scale inhibitor for a closed circulating water system and a use method thereof. Background technique [0002] The closed circulating water system is referred to as a closed system for short. As the name implies, it refers to the process in which hot or cold water is cooled or heated in a closed circulating system. The closed system is different from the open system. The open circulating water system has evaporation loss and is polluted by impurities in the atmosphere. Requires very little make-up water and is not prone to deposits in the system. The system does not have problems such as water evaporation and salt concentration, and the loss of circulating water and chemicals is very small. In this system, the cooled or heated circulating water conducts heat exchange with the outside through the cooling pipe, taking away ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/14C02F5/12C02F5/08
CPCC02F5/125C02F5/145
Inventor 李艳艳秦志伟肖筱新徐小倩于庆彬侯学峰周少雄
Owner 中化化工科学技术研究总院有限公司
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