Corrosion inhibitor for steam condensate system of industrial boiler and process for manufacturing same

A technology for steam condensation and industrial boilers, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc. problems, to achieve stable operation and prevent acid corrosion

Inactive Publication Date: 2004-12-29
张文利 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When untreated condensed water is used as boiler make-up water, a large amount of iron ions contained in the water will cause secondary scaling and under-scaling corrosion on the heat transfer surface of the boiler, causing greater harm, making the direct recycling of steam condensed water have certain advantages difficulty
Therefore, many industrial boilers do not consider the recovery of condensed water in the design and installation of the system and steam-using equipment, and discharge the good-quality steam condensed water to the ditch to waste
Although some users recycle condensed water as boiler feed water, due to the lack of effective pipeline anti-corrosion measures and condensed water treatment technology, the condensed water recovery pipeline is severely cor

Method used

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  • Corrosion inhibitor for steam condensate system of industrial boiler and process for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In a container with stirring, add 80 ml of deionized water, heat to 55°C, add 0.016 g of Tween 80, 0.004 g of Kespan 60 in turn, stir and mix well, then add 16 g of 18-carbon straight-chain alkylamine and 4 grams of straight-chain alkylamines with 16 carbon atoms, stirred for 5-10 minutes and then cooled to room temperature to obtain an intermediate product. Add 60 grams of cyclohexylamine and 40 grams of ammonia water (referring to the weight of ammonia) in the reaction kettle, start stirring, then add 300 grams of morpholine, stir for 1-5 minutes, add the above-mentioned intermediate product, and stir for another 3 minutes to obtain milky liquid. Corrosion agent, the corrosion inhibition rate of the corrosion inhibitor is 98-99%.

Embodiment 2-13

[0042] The manufacturing steps and conditions of Examples 2-13 are the same as those of Example 1, the difference is that each raw material and the amount of raw materials are shown in Table 1, and the obtained corrosion inhibitor product is an emulsion liquid.

[0043] Example (grams)

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PUM

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Abstract

The corrosion inhibitor for industrial boiler steam condensating water system includes alkyl amine with 12-18 carbon atoms or epoxy alkyl amine, Tween-60, Span-60, morpholine, cyclohexylamine and/or ammonia, and water. The corrosion inhibitor is emulsified liquid, and has functions of filming and neutralizing, reasonable steam-liquid distribution ratio, lower consumption, concentration indication, corrosion inhibiting efficiency over 98 %, obvious energy saving function and simple use, and may be used widely in various industrial boiler steam condensating water systems.

Description

technical field [0001] The invention relates to the technical field of boiler water treatment, in particular to an industrial boiler steam condensate water system corrosion inhibitor and a manufacturing method thereof. Background technique [0002] Steam condensate, especially boiler steam condensate, is high-quality boiler feed water containing heat energy. Recycling steam condensate is the most effective measure to save water and energy for boilers. The heat contained in condensed water can reach 20% to 30% of the total heat of steam. If it is recycled and utilized, it can significantly reduce boiler fuel consumption, reduce the amount of softened water, reduce steam production costs, and improve boiler water quality. Due to the improvement of boiler water quality, it can also greatly reduce boiler blowdown and heat energy loss caused by blowdown, improve boiler efficiency, and make boiler operation safer. However, since the steam contains oxygen and free carbon dioxide, ...

Claims

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Application Information

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IPC IPC(8): C02F5/10C02F5/12
Inventor 张文利张晓丽魏刚陶月明袁适安
Owner 张文利
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