Novel closed circulating water system corrosion and scale inhibitor and using method thereof
A corrosion and scale inhibitor, closed cycle technology, applied in chemical instruments and methods, descaling and water softening, complex/solubilizing agent treatment, etc., can solve problems such as poor treatment effect, heavy workload, and excessive corrosion , to achieve the effect of increasing residence time, improving corrosion inhibition performance, and avoiding insufficient dosage
Active Publication Date: 2020-02-28
中化化工科学技术研究总院有限公司
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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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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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Abstract
The invention relates to a novel closed circulating water system corrosion and scale inhibitor and a using method thereof, and belongs to the technical field of closed system water treatment. The novel closed circulating water system corrosion and scale inhibitor is composed of the following components in percentage by mass: 60-70% of soft water; 8-10% of an alkalinity regulator; 5-10% of an organic amine; 4 to 10% of a molybdate; and 5 to 10% of 2-phospho-1, 2, 4-tricarboxylic acid butane. The novel closed circulating water system corrosion and scale inhibitor has excellent corrosion inhibition performance, the carbon steel annual corrosion rate is lower than 0.075 mm / a, and the stainless steel, copper and copper alloy annual corrosion rate is lower than 0.005 mm / 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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Patent Type & Authority Applications(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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