Steam condensate corrosion inhibitor for industrial boiler

A technology for steam condensate water and industrial boilers, which is used in descaling and water softening, water/sludge/sewage treatment, chemical instruments and methods, etc. Corrosion, low cost of water treatment, low dosage effect

Active Publication Date: 2014-04-09
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with film-forming amines, the dosage is relatively high, and the cost of water treatment is high

Method used

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  • Steam condensate corrosion inhibitor for industrial boiler
  • Steam condensate corrosion inhibitor for industrial boiler
  • Steam condensate corrosion inhibitor for industrial boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Taking the preparation of 1000g industrial boiler steam condensate corrosion inhibitor as an example, the raw materials used and their mass ratios are as follows:

[0020]

[0021] The preparation method of the above-mentioned industrial boiler steam condensate corrosion inhibitor is as follows: according to the mass ratio of the above-mentioned raw materials, octadecylamine acetate, cyclohexylamine, ethylenediamine tetramethylene phosphonate, and deionized water are added In a reaction kettle, heat to 70°C, stir until it is completely dissolved, cool to room temperature, and pack it into packaging barrels to obtain an industrial boiler steam condensate corrosion inhibitor.

Embodiment 2

[0023] Taking the preparation of 1000g industrial boiler steam condensate corrosion inhibitor as an example, the raw materials used and their mass ratios are as follows:

[0024]

[0025] The preparation method of the industrial boiler steam condensate corrosion inhibitor is the same as that of Example 1.

Embodiment 3

[0027] Taking the preparation of 1000g industrial boiler steam condensate corrosion inhibitor as an example, the raw materials used and their mass ratios are as follows:

[0028]

[0029] The preparation method of the industrial boiler steam condensate corrosion inhibitor is the same as that of Example 1.

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PUM

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Abstract

The invention relates to a steam condensate corrosion inhibitor for an industrial boiler. The corrosion inhibitor is prepared from the raw materials in percentage by weight: 5-10% of dodecylamine acetate or octadecylamine acetate, 60-80% of cyclohexane or morpholine, 3-10% of ethanediamine tetramethene sodium phosphate and 100% of distilled water or deionized water. The corrosion inhibitor can form a compact protective film on the surface of metal; remove carbon dioxide in condensate; and prevent the boiler from scaling when the boiler feed water hardness does not meet the standard and the like. The corrosion inhibitor provided by the invention has the characteristics of small addition of medicine, low water treatment cost, good corrosion effect and the like, and is easy to operate. The corrosion inhibitor is used for recycling steam condensate for the industrial boiler, and has a remarkable effect on energy conservation and emission reduction.

Description

technical field [0001] The invention belongs to the technical field of steam condensate water treatment of industrial boilers, and in particular relates to a corrosion inhibitor for steam condensate water systems of industrial boilers. Background technique [0002] The steam produced by the boiler is condensed into condensate during use. Condensed water has the characteristics of high purity and high heat content. According to statistics, the waste heat contained in the condensed water produced by steam under different pressures can account for 15% to 30% of the total steam heat, which is an ideal waste heat resource with considerable quantity and high quality. If this part of the heat is fully recovered, the fuel consumption of the boiler can be reduced and energy saving can be achieved. Not only that, but also can greatly reduce the amount of boiler make-up water, reduce boiler blowdown (including CO 2 , SO 2 , coal slag and waste water, etc.). Therefore, recycling st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/14
Inventor 刘志刚王丽莉杨鸿鹰段宝民王安平张文存
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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