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Boiler water treatment agent

A treatment agent and boiler water technology, which is applied in the fields of anti-scaling water treatment chemicals, scale inhibition, and boiler deoxidation. It can solve the problems of increasing boiler corrosion, difficulty in measuring residue concentration, and generation of odor, so as to achieve the effect of preventing scale

Inactive Publication Date: 2012-02-08
DALIAN JINZHOU JINHE CHEM BUILDING MATERIALS FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

When chemically treated with light amine groups, light amines generate acids such as nitric acid, which increases corrosion to boilers
The disadvantage of sugar is that it is difficult to measure its residue concentration in boiler water, so it is difficult to control the correct addition amount, and sugar will produce odor when it encounters steam
Soda ash method, sodium ion exchange method, electronic anti-scaling instrument and other methods are usually used for boiler descaling and anti-scaling, but the descaling effect of the above methods is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Calculated according to weight fraction, it is composed of the following components: buy commercially available potassium sulfite 20wt%, polyamino polyether group methylene phosphoric acid 38wt%, ethylenediaminetetraacetic acid 2wt%, trisodium phosphate 12wt%, sodium carbonate 23wt% %, and 5wt% sodium hydroxide, pulverized and mixed evenly, added 90% water to dilute and stirred evenly, and then filled into barrels to make a medicament.

[0028] The above additives were used in a coal-fired boiler in a power plant. The amount of medicine should be considered according to the water quality of the boiler. Add 0.2-0.5 kg of medicine per ton of water. Pump the medicine liquid into the water supply pipe in proportion. After a cycle, measure the water quality. The oxygen removal rate and scale prevention rate reach 90% and 80% respectively.

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Abstract

The invention relates to a boiler water treatment agent which comprises the following components by weight: 35-42 wt% of polyaminopolyether methylenephosphonic acid, 10-22 wt% of potassium sulfite, 2-8 wt% of ethylene diamine tetraacetic acid, 10-15 wt% of trisodium phosphate, 15-25 wt% of sodium carbonate, and 5-8 wt% of sodium hydroxide. The boiler water treatment agent of the invention can also reduce boiler water hardness, reduce and prevent the formation of scale; after the application of the boiler water treatment agent, the oxygen content of boiler water is within a national standard range; and the boiler water treatment agent of the invention also has the functions of removing residual hardness and preventing scale.

Description

technical field [0001] The invention belongs to the technical field of water quality purification, and in particular relates to a water treatment agent for boiler deoxidation, scale inhibition and scale prevention. Background technique [0002] Boiler equipment is an indispensable energy supply equipment for industrial development. It has the characteristics of large size and difficult installation and replacement. Therefore, it needs regular maintenance and cleaning to delay its aging speed as much as possible. However, after the boiler is used for a long time, fouling and rust will inevitably occur. In the boiler components, the corrosion of dissolved oxygen and the generation of scale will affect the service life of the boiler, reduce the heat transfer efficiency and waste energy. In order to prevent the corrosion of dissolved oxygen and the generation of scale, it is necessary to remove the dissolved oxygen in the boiler water and reduce the hardness of the water. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14
Inventor 袁锁营
Owner DALIAN JINZHOU JINHE CHEM BUILDING MATERIALS FACTORY
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