Phosphorus-free composite cylinder cleaning agent for low-pressure boiler and preparation method thereof

Abstract

The invention discloses a phosphorus-free composite cylinder cleaning agent for a low-pressure boiler and a preparation method thereof, which belong to the field of boiler water treatment. The productprovided by the invention is composed of a deoxidant component, a corrosion inhibitor component, a scale inhibitor component, a pH stabilizer component and the like. The cleaning agent is prepared bycompounding the following components in percentage by weight: 5%-20% of the deoxidant component, 1%-10% of the corrosion inhibitor component, 0.1%-10% of the scale inhibitor component, 0.1%-10% of the pH stabilizer component and the balance of pure water according to specific steps. The production process is simple, and the product is widely suitable for low-pressure steam boilers and hot water boilers with pure water, softened water and common tap water as supplemented water. After the product is added into boiler make-up water, water supply dissolved oxygen corrosion can be eliminated, theslow-release scale inhibition effect can be achieved in the boiler water, meanwhile, the corrosion problem of the condensate water end can be effectively solved through the specific neutralizing aminecomponent, a barrel type water treatment solution is provided for a low-pressure boiler, and the cleaning agent is free of phosphorus, environmentally friendly, safe and efficient.

Description

technical field [0001] The invention belongs to the field of boiler water treatment, and in particular relates to a phosphorus-free composite cylinder cleaning agent for low-pressure boiler systems and a preparation method thereof, which can solve the problem of oxygen removal, corrosion and scale inhibition and condensed water corrosion control of low-pressure boilers in one bucket. Background technique [0002] Boilers with a pressure lower than 2.5MPa are called low-pressure boilers. Low-pressure boilers are widely used in our daily production and life because of their low cost, convenient use, and easy control. [0003] One of the most important tasks in the process of boiler operation is boiler water treatment. Improper water treatment will seriously affect the safe operation of the boiler. Improper treatment of dissolved oxygen in feed water will cause boiler oxygen corrosion. Improper treatment of boiler water will cause scaling and corrosion of boiler tubes. Impr...

AI Technical Summary

Problems solved by technology

Improper treatment of dissolved oxygen in feed water will cause boiler oxygen corrosion. Improper treatment of boiler water will cause scaling and corrosion of boiler tubes. Improper treatment of steam and condensed water will cause problems such as corrosion and rust of condensed water pipes. These problems can cause deterioration of boiler water quality. , the sewage discharge increases, the heat transfer is hindered, and in severe cases, the pipe is corroded and burst, or even an explosion accident, which seriously affects daily safety.

[0004] At present, for the water treatment of low-pressure boilers, most of them adopt the combination of thermal deoxidation and chemical deoxidation of feed water, adding ammonia water to the feed water to stabilize the pH value, and adding phosphorus-containing chemicals such as inorganic phosphate or organic phosphate to the boiler water to control scaling. Although the control of corrosion and scaling can be achieved to a certain extent, it requires the addition of multiple agents at multiple points and the operation is complicated. Phosphorus-containing chemicals will cause eutrophication of the subsequent sewage water, and the volatility and irritation of ammonia water will cause serious problems. It will cause potential personal injury, and the corrosion control ability of the condensate pipe is limited, and the high iron content of the condensate makes the condensate unable to be recycled directly.