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Desulfurizing method and synergistic agent thereof

A synergist, wet flue gas desulfurization technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problem of not improving the efficiency of limestone-gypsum wet flue gas desulfurization and desulfurization, reducing the amount of limestone used, Solve problems such as increased sulfur content in coal, and achieve the effects of saving operating power, reducing water content, and enhancing reaction

Active Publication Date: 2009-11-11
江丰明 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned limestone-gypsum wet flue gas desulfurization method is mature, the biggest problems for coal-fired power plants are the increasing sulfur content of coal, the use of a large amount of limestone, the accumulation and treatment of excess by-product gypsum, and The huge amount of energy consumed to run the entire process has a major impact on the overall power generation efficiency of the power plant and environmental protection
However, so far, there is no improved method that can really improve the desulfurization efficiency of limestone-gypsum wet flue gas desulfurization, reduce the amount of limestone used, reduce the amount of by-product gypsum, and at the same time save electricity

Method used

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  • Desulfurizing method and synergistic agent thereof
  • Desulfurizing method and synergistic agent thereof
  • Desulfurizing method and synergistic agent thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Component Percentage

[0064] Dialkyl sulfosuccinate 70.0

[0065] Propylene glycol 10.0

[0066] Purified water 20.0.

Embodiment 2

[0068] Component Percentage

[0069] Dialkyl sulfosuccinate 35.0

[0070] Monoalkyl sulfosuccinate 35.0

[0071] Diethylene glycol 10.0

[0072] Purified water 20.0.

[0073] With the synergist of above-mentioned embodiment 1. and embodiment 2., utilizing the desulfurization method of the above-mentioned first embodiment, the synergist of the present invention is directly added into limestone slurry with different dosages (according to the amount of limestone slurry) and stirred In the tank, after mixing well, it enters the absorption tower with limestone slurry in the form of spray to participate in the desulfurization reaction, and the data obtained for improving the desulfurization efficiency are as follows:

[0074] Dosage (according to the amount of limestone slurry)

[0075] The above results show that the synergist of the present invention can improve the desulfurization efficiency of limestone slurry, thus reducing the amount of limestone used and the gene...

Embodiment 3

[0077] Component Percentage

[0078] Dialkyl sulfosuccinate 70.0

[0079] Diethylene glycol 10.0

[0080] Purified water 20.0.

[0081] With the synergist of the above-mentioned embodiment 3., utilizing the desulfurization method of the second embodiment above, the synergist of the present invention is directly added to the gypsum before the gypsum vacuum dehydrator with different dosages (in terms of gypsum slurry) pulp, such as image 3 As shown, the data obtained to improve the dewatering efficiency of gypsum slurry are as follows:

[0082] Dosage (according to the amount of gypsum slurry)

none

(0ppm)

two ten thousandths

(200ppm)

5 out of 10,000

(500ppm)

Water content of gypsum before dehydration

17.0％

17.0％

17.0％

Moisture content of gypsum after dehydration

10.1％

8.8％

8.2％

[0083] The above results show that the synergist of the present invention can help filter and impr...

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Abstract

The invention relates to a desulfurizing method and a synergistic agent thereof. The synergistic agent is formed by combing alkyl sulfo sulfonic ester and other humectants. The synergistic agent is mixed into limestone mortar and enters an absorption tower of a wet flue gas desulfurization system in a spraying mode. The desulfurizing method can increase the desulfurization efficiency of the limestone mortar and the dehydration efficiency of gypsum, reduce the use quantity of limestone and the output of byproduct gypsum, relieve the problems of gypsum accumulation and environmental protection treatment and save massive amount of operation electric energy. The synergistic agent does not contain any heavy metal and chlorine, is nontoxic to the environment and is convenient to use.

Description

technical field [0001] The invention relates to a wet flue gas desulfurization system, in particular to a desulfurization method for a limestone-gypsum wet flue gas desulfurization system (FDG) and a synergist used therefor. Background technique [0002] Under the pressure of oil shortage and rising prices, coal-fired power generation has become one of the key ways to obtain electricity at home and abroad. The main environmental pollutants produced by coal combustion are sulfur dioxide, nitrogen oxides and soot. Under the massive consumption of coal, the effective control of sulfur dioxide emission is the primary environmental protection responsibility of every coal-fired power plant. At present, the methods of flue gas desulfurization in coal-fired power plants are divided into three categories: pre-combustion, in-combustion and post-combustion. Among them, post-combustion desulfurization is the most critical device for discharging flue gas to the environment. Post-combu...

Claims

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Application Information

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IPC IPC(8): B01D53/50B01D53/80
Inventor 江丰明
Owner 江丰明
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