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Flue gas desulfurization synergistic agent

A synergist, flue gas technology, applied in the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve the problems of poor scale inhibition and descaling effect, high cost, general denitration effect, etc. Depends on the effect of reducing and increasing acidity

Inactive Publication Date: 2015-07-22
重庆高成环保技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these known desulfurization additives have desulfurization and scale inhibition effects in the desulfurization system, the denitrification effect is average, the scale inhibition and scale removal effects are poor, and the cost is high

Method used

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  • Flue gas desulfurization synergistic agent
  • Flue gas desulfurization synergistic agent
  • Flue gas desulfurization synergistic agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A flue gas desulfurization synergist prepared by uniformly mixing 90% nitrilotriacetic acid, 4% succinic acid and 6% glycolic acid in mass percentage.

[0041] Before and after the present invention is put into the absorption tower, the desulfurization efficiency and the content of limestone change as follows:

[0042] Table 1 Desulfurization efficiency test results before and after adding the flue gas desulfurization synergist of the present invention

[0043]

[0044] The formula for calculating desulfurization efficiency is η=(V1-V2) / V1. It can be seen from Table 1 that after adding the synergist of the present invention, the desulfurization efficiency is significantly improved.

[0045] Table 2 The compositional analysis results of limestone before and after adding the flue gas desulfurization synergist of the present invention

[0046]

[0047] As can be seen from Table 2, after adding the synergist of the present invention, the moisture of limestone remains...

Embodiment 2

[0049] Flue gas desulfurization synergist prepared by uniformly mixing 90% nitrilotriacetic acid, 8% succinic acid and 2% glycolic acid in mass percentage.

[0050] Before and after the present invention is put into the absorption tower, the desulfurization efficiency and the content of limestone change as follows:

[0051] Table 3 Desulfurization efficiency test results before and after adding the flue gas desulfurization synergist of the present invention

[0052]

[0053] The formula for calculating desulfurization efficiency is η=(V1-V2) / V1. It can be seen from Table 3 that after adding the synergist of the present invention, the desulfurization efficiency is significantly improved.

[0054] Table 4 The compositional analysis results of limestone before and after adding the flue gas desulfurization synergist of the present invention

[0055]

[0056] As can be seen from Table 4, after adding the synergist of the present invention, the moisture of limestone remains s...

Embodiment 3

[0058] A flue gas desulfurization synergist prepared by uniformly mixing 90% nitrilotriacetic acid, 5% succinic acid and 5% glycolic acid in mass percentage.

[0059] Before and after the present invention is put into the absorption tower, the desulfurization efficiency and the content of limestone change as follows:

[0060] Table 5 Desulfurization efficiency test results before and after adding the flue gas desulfurization synergist of the present invention

[0061]

[0062] The formula for calculating desulfurization efficiency is η=(V1-V2) / V1. It can be seen from Table 5 that after adding the synergist of the present invention, the desulfurization efficiency is significantly improved.

[0063] Table 6 The compositional analysis results of limestone before and after adding the flue gas desulfurization synergist of the present invention

[0064]

[0065] As can be seen from Table 6, after adding the synergist of the present invention, the moisture content of limestone...

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Abstract

The invention discloses a flue gas desulfurization synergistic agent which comprises the following substances based on mass percentage concentration: 90-91% nitrilotriacetic acid, 4-8% succinic acid and 2-6% hydroxyacetic acid. The flue gas desulfurization synergistic agent can improve the acidic ability in slurry, increase the dissolution rate limestone, accelerate the absorption of SO2, improve the desulfurization efficiency, is good in scale inhibition and scale removal effects, and enables a desulfurization system to run economically and stably.

Description

technical field [0001] The invention relates to the field of coal combustion, in particular to a flue gas desulfurization synergist. Background technique [0002] Power plants will emit a large amount of sulfur dioxide in the process of burning coal, causing serious pollution to the environment. This pollution problem has always been a major concern of the country. [0003] There are usually three solutions: one is to increase the capacity of the desulfurization device; the other is to control the sulfur content of coal; the third is to use desulfurization additives. The capacity expansion of the desulfurization system is not only expensive, but also takes a long time, and it is difficult to flexibly adapt to changes in coal types and loads; controlling the sulfur content of coal combustion will greatly increase fuel costs. At present, a variety of desulfurization additives have been developed, and those used in desulfurization systems are mainly divided into two categories...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/80B01D53/50
Inventor 陈佐会陈科全
Owner 重庆高成环保技术开发有限公司