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Scale corrosion inhibitor for poly-maleic anhydride boiler

A scale and corrosion inhibitor, polymaleic anhydride technology, applied in the direction of scale removal and water softening, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of unsatisfactory effect, small molecular weight, high temperature resistance To achieve the effect of safe use, excellent anti-scaling performance, and reduction of accident rate and accident loss

Inactive Publication Date: 2008-09-24
邢献军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the best organic salt agent is polyacrylic acid (sodium), but because of its small molecular weight and poor high temperature resistance, its effect on boiler water treatment is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1. The average molecular weight of polyepoxysuccinic acid is 800, the aqueous solution 15kg that content is 50%, is added in the aqueous solution 60kg that polymaleic anhydride average molecular weight is 500, polymaleic acid content is 50%, then adds citric acid 2kg, zinc salt 10kg, stir fully without precipitation to get polymaleic anhydride boiler scale and corrosion inhibitor.

Embodiment 2

[0012] Example 2. The average molecular weight of polyepoxysuccinic acid is 800, the aqueous solution 20kg that content is 50%, add polymaleic anhydride average molecular weight is 1000, in the aqueous solution 65kg that polymaleic acid content is 50%, add citric acid 3kg again, zinc salt 12kg, stir fully without precipitation to get polymaleic anhydride boiler scale and corrosion inhibitor.

Embodiment 3

[0013] Example 3. The average molecular weight of polyepoxysuccinic acid is 800, the aqueous solution 25kg that content is 50%, add polymaleic anhydride average molecular weight is 1200, in the aqueous solution 70kg that polymaleic acid content is 50%, add citric acid 4kg again, zinc salt 14kg, stir fully without precipitation to get polymaleic anhydride boiler scale and corrosion inhibitor.

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PUM

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Abstract

The invention provides an antisludging inhibiter of a polymaleic anhydride boiler, which belongs to the chemical product technical field, and aims at providing an antisludging inhibiter of the polymaleic anhydride boiler, which has high ansludging ratio and small corrosion rate. The antisludging inhibiter has the material components and the mass percents thereof that: water solution with the content of polymaleic acid being 50 percent is 60-70, water solution with the content of polyepoxysuccinic acid being 50 percent is 15-25, citric acid is 2-4, and zinc salt is 10-14. The polyepoxysuccinic acid is added into the water solution of polymaleic acid, and the citric acid and the zinc salt are added, and the full mixing is performed to obtain the antisludging inhibiter. The antisludging ratio of the antisludging inhibiter of the invention can reach up to more than 99 percent, and the corrosion rate is less than 0.011 mm / a, so the antisludging inhibiter is not only economic and practical, but also has good effect, and has very marked economic and social benefits, is used for the water treatment in the boiler, and also can be applied to the scale prevention and the scale boiling of central air conditioning systems and water heaters, etc.

Description

technical field [0001] The invention relates to a polymaleic anhydride boiler scale and corrosion inhibitor, which belongs to the technical field of chemical products. Background technique [0002] Boilers are important heat energy supply equipment in the national economy, widely used in electric power, machinery, chemical industry, textile, papermaking, food and other industries and people's daily life and work. The quality of its operation is directly related to people's lives and property The safety of the country is also directly related to the healthy development of the economy. Among them, boiler water treatment is an important part to ensure the safe and economical operation of boilers. [0003] Boiler water treatment is to prevent the formation of scale, control the corrosion of metals, and prevent steam pollution, so as to achieve the purpose of safe and economical operation. Internationally, the research on boiler water treatment in some developed countries mainl...

Claims

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Application Information

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IPC IPC(8): C02F5/10
Inventor 邢献军沈清伍金猴张劲
Owner 邢献军
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