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Composite additive for synergistic removal of multiple pollutants and preparation method

A technology for compound additives and pollutants, which is applied in separation methods, chemical instruments and methods, and dispersed particle separation, etc., can solve the problems of complex flue gas purification and treatment systems, large equipment investment and operating costs, and difficulty in step-by-step control. Achieve low cost, prevent equipment corrosion, and prevent foaming

Active Publication Date: 2011-12-21
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, more mature control methods at home and abroad generally use multi-system separate removal technologies. The advantage of these technologies is that they can achieve high control efficiency for each pollutant, but their disadvantage is that they need to simultaneously treat multiple pollutants. When controlling, the flue gas purification treatment system is complex, occupies a lot of land, and the investment and operation costs of equipment are large.
For old power plants, due to special reasons such as their layout, operating characteristics, or service life, it is difficult to accept this mode of step-by-step control of multiple pollutants at present.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The following sections of this example describe:

[0022] Example 1

[0023] 1) Mix adipic acid and sodium formate at 5°C-35°C and stir for 0.3h-0.5h;

[0024] 2) Add polysiloxane and sodium polyphosphate to the mixture in step 1) and stir for 0.5h-1h;

[0025] 3) Add sodium chlorite to the mixture after step 2), and stir for 0.3h-0.5h.

[0026] 4) Store the mixed solution after step 3) to obtain an additive for synergistic removal of various pollutants consisting of a composite synergist, a high-efficiency co-solvent, an efficient oxidant, an efficient anti-foaming agent, and an efficient corrosion inhibitor. The additive composition in parts by weight is: 65 parts by weight of adipic acid, 25 parts by weight of sodium formate, 8 parts by weight of sodium chlorite, 1 part by weight of polysiloxane, and 1 part by weight of sodium polyphosphate.

[0027] The additive prepared in Example 1 was subjected to an additive activity test, and the activity evaluation was carr...

Embodiment 2

[0029] 1) Mix fruit acid and sodium sulfate at 5°C-35°C and stir for 0.3h-0.5h;

[0030] 2) Add polysiloxane and sodium polyphosphate to the mixture in step 1) and stir for 0.5h-1h;

[0031] 3) Add potassium permanganate to the mixture after step 2), and stir for 0.3h-0.5h.

[0032] 4) Store the mixed solution after step 3) to obtain an additive for synergistic removal of various pollutants consisting of a composite synergist, a high-efficiency co-solvent, an efficient oxidant, an efficient anti-foaming agent, and an efficient corrosion inhibitor. The additives are composed in parts by weight: 60 parts by weight of fruit acid, 25 parts by weight of sodium sulfate, 13 parts by weight of potassium permanganate, 1 part by weight of polysiloxane, and 1 part by weight of sodium polyphosphate.

[0033] The additive prepared in Example 2 was subjected to an additive activity test, and the activity evaluation was carried out in a bubbling reactor with a diameter of 8.5 cm and a heigh...

Embodiment 3

[0035] 1) Mix adipic acid, fruit acid and sodium sulfate at 5°C-35°C and stir for 0.3h-0.5h;

[0036] 2) Add polysiloxane and sodium polyphosphate to the mixture in step 1) and stir for 0.5h-1h;

[0037] 3) Add sodium chlorite and potassium permanganate to the mixture after step 2), and stir for 0.3h-0.5h.

[0038] 4) Store the mixed solution after step 3) to obtain an additive for synergistic removal of various pollutants consisting of a composite synergist, a high-efficiency co-solvent, an efficient oxidant, an efficient anti-foaming agent, and an efficient corrosion inhibitor. The additive composition in parts by weight is: 30 parts by weight of adipic acid, 30 parts by weight of fruit acid, 25 parts by weight of sodium sulfate, 3 parts by weight of potassium permanganate, 10 parts by weight of sodium chlorite, and 1 part by weight of polysiloxane , 1 part by weight of sodium polyphosphate.

[0039] The additive prepared in Example 3 was subjected to an additive activity ...

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Abstract

The invention relates to an additive and a preparation method thereof, in particular to a composite additive for synergic removal of various pollutants and a preparation method thereof. In the composite additive for synergic removal of various pollutants and the preparation method thereof, the composite additive comprises the following components in parts by weight: 50 to 65 parts of a composite synergistic agent, 10 to 25 parts of high-efficiency cosolvent, 5 to 15 parts of high-efficiency oxidizing agent, 1 to 5 parts of high-efficiency anti-foaming agent, and 1 to 5 parts of high-efficiency corrosion inhibitor. The composite additive has the advantages of reasonable formula design, capability of removing various pollutants, good stain removal effect, energy-conservation performance and environmental friendliness, low cost, stable product quality, reasonable process design, and simple and easily operable method.

Description

technical field [0001] The invention relates to an additive and a preparation method thereof, in particular to a composite additive for synergistic removal of various pollutants and a preparation method thereof. Background technique [0002] During the combustion of coal, a large amount of air pollutants such as dust, sulfur dioxide, carbon dioxide, and nitrogen oxides will be emitted. These pollutants have caused serious harm to human health, ecological environment, and social development. SO emissions from coal combustion 2 accounted for 87% of the total emissions from various pollution sources, and the emitted NO x It accounts for 67% of the total emissions from various pollution sources. With the increase of sulfur dioxide emissions in my country, SO in the atmosphere 2 The amount is much higher than the carrying capacity of the environment, resulting in SO 2 Acid rain pollution is becoming more and more serious. SO from coal burning 2 And acid rain pollution is no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/79B01D53/78B01D53/68B01D53/64B01D53/56
Inventor 朱跃杜振何胜高正来许昌日杨用龙
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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