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Flue gas desulphurization synergist

A synergist and flue gas technology, applied in the direction of air quality improvement, dispersed particle separation, chemical instruments and methods, etc., can solve the problems of no improvement in NOx emissions, long and short duration of action, and achieve the goal of promoting The effect of dissolving limestone, reducing the amount of use, and reducing the amount of use

Inactive Publication Date: 2013-11-13
SNTO TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, synergists that can be used for limestone-gypsum wet desulfurization mainly include inorganic synergists, organic synergists and compound synergists. It has a short duration and is a consumable synergist; the advantage of organic desulfurization synergists is that it has a long duration of action, does not directly consume the synergist, and has a small dosage. The disadvantage is that the onset time is relatively slow, generally 2-5h; Although the composite synergist overcomes the shortcomings of the inorganic synergist and the organic synergist, the formula is complex, expensive, and used in large quantities; and the existing desulfurization synergist formula is mainly for the absorption of SO in flue gas. 2 plays a promoting role, while the NO in the flue gas x Emissions are not improving

Method used

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  • Flue gas desulphurization synergist
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  • Flue gas desulphurization synergist

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The components of the desulfurization synergist and the percentage by weight of each component are:

[0036] (Total weight is 100Kg)

[0037] components

Adipic acid

Sodium carboxymethyl cellulose

Carbonamide

Iron sulfate

copper sulfate

Manganese sulfate

Weight (kg)

30

50

17

1

1

1

weight percentage (%)

30

50

17

1

1

1

[0038] The method of using the desulfurization synergist is as follows:

[0039] a. The above-mentioned raw materials are compounded in proportion to form a finished product;

[0040] b. Add the above-mentioned desulfurization synergist into the absorption tower, and the initial addition amount is 0.6‰ of the limestone slurry weight;

[0041] c. After the desulfurization system has been running for a period of time, supplement it according to the loss of synergist.

[0042] Apply the above desulfurization synergist to the inlet...

Embodiment 2

[0044] The components of the desulfurization synergist and the percentage by weight of each component are:

[0045] (Total weight is 100Kg)

[0046] components

Adipic acid

Sodium carboxymethyl cellulose

Carbonamide

Iron sulfate

copper sulfate

Manganese sulfate

Weight (kg)

60

25

2

5

3

5

weight percentage (%)

60

25

2

5

3

5

[0047] The method of using the desulfurization synergist is as follows:

[0048] a. The above-mentioned raw materials are compounded in proportion to form a finished product;

[0049] b. Add the above-mentioned desulfurization synergist into the absorption tower, and the initial addition amount is 0.4‰ of the limestone slurry weight;

[0050] c. After the desulfurization system has been running for a period of time, supplement it according to the loss of synergist.

[0051] Apply the above desulfurization synergist to the inlet f...

Embodiment 3

[0053] The components of the desulfurization synergist and the percentage by weight of each component are:

[0054] (Total weight is 100Kg)

[0055] components

Adipic acid

Sodium carboxymethyl cellulose

Carbonamide

Iron sulfate

Manganese sulfate

Weight (kg)

35

30

15

10

10

weight percentage (%)

35

30

15

10

10

[0056] The method of using the desulfurization synergist is as follows:

[0057] a. The above-mentioned raw materials are compounded in proportion to form a finished product;

[0058] b. Add the above-mentioned desulfurization synergist into the absorption tower, and the initial addition amount is 0.5‰ of the limestone slurry weight;

[0059] c. After the desulfurization system has been running for a period of time, supplement it according to the loss of synergist.

[0060] Apply the above desulfurization synergist to the inlet flue gas SO 2 The concentrati...

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Abstract

The invention discloses a flue gas desulphurization synergist. The desulphurization synergist is characterized by comprising the following components, by weight: 30-60% of adipic acid, 25-50% of carboxymethylcellulose sodium, 2-20% of carbamide and 3-20% of a catalysis oxidizing agent. The flue gas desulphurization synergist provided by the invention has simple formula, high desulphurization efficiency and can reduce NOx content of the flue gas.

Description

technical field [0001] The invention relates to a wet desulfurization process, in particular to a wet flue gas desulfurization synergist. Background technique [0002] In the traditional wet desulfurization process, the limestone-gypsum desulfurization method is mainly used, and its working principle is to use limestone as an absorbent to absorb SO in the flue gas. 2 , to generate calcium sulfite, which is oxidized by air in the oxidation tower to calcium sulfate, that is, gypsum. In the traditional limestone-gypsum desulfurization method, the cost of limestone as an absorbent is low, and the desulfurization by-products can be comprehensively utilized, so this desulfurization method is widely used. [0003] With the extensive mining and use of coal resources, the quality of coal is gradually decreasing, which makes the sulfur content of the flue gas of the pulverized coal boiler in the power station gradually increase, which far exceeds the design value of the sulfur conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/60B01D53/80
CPCY02A50/20
Inventor 不公告发明人
Owner SNTO TECH GRP
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