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Method for detecting quality of flue gas desulfurization agent

A desulfurizer and flue gas technology, applied in chemical analysis by titration, can solve the problems of secondary pollution, corrosion, small absorption, etc., and achieve the effect of simple detection method and reliable detection data

Inactive Publication Date: 2017-11-17
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since non-renewable absorbents are not recyclable, there is an effect on SO 2 The small amount of absorption will lead to pipeline blockage and serious corrosion, and will also produce low value-added or useless waste gas products, which will cause secondary pollution problems

Method used

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  • Method for detecting quality of flue gas desulfurization agent
  • Method for detecting quality of flue gas desulfurization agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The preparation of embodiment 1 0.01mol / L sulfuric acid standard solution

[0057] Accurately weigh 10g of analytically pure concentrated sulfuric acid, place it in a 1000mL volumetric flask, add distilled water to dilute to the mark, shake well, then set the volume to 1000L, shake well, and prepare a sulfuric acid standard solution with a theoretical concentration of 0.01mol / L.

Embodiment 2

[0058] The demarcation of embodiment 2 sulfuric acid standard solution

[0059] Weigh 0.0250g of standard sodium carbonate that has been dried at 200°C for 1.5 hours and cooled to room temperature in a desiccator, put it in a 250mL conical flask, dissolve it in 100mL of newly boiled distilled water, and add 7-8 drops of bromocresol Green-methyl red indicator, titrated with the sulfuric acid standard solution prepared in embodiment 1 until the solution was yellow, boiled for 2 minutes, continued titration after cooling until the solution was dark red, and the consumed volume of the sulfuric acid standard solution was recorded as 24.05mL; Carry out the blank test that does not add sodium carbonate under condition, the consumption volume of record sulfuric acid standard solution is 0.37mL, calculate the actual concentration of the sulfuric acid standard solution that embodiment 1 prepares according to above-mentioned formula 1 and be 0.009958mol / L, divide and take 100mL sulfuric a...

Embodiment 3

[0060] The quality measurement of embodiment 3 flue gas desulfurizer

[0061] weigh m 2 (0.5 ~ 10g) flue gas desulfurizer into the conical flask, accurate to 0.0001g, add distilled water to dissolve, then set the volume to 100mL, shake well, get the solution to be tested, the volume of the solution to be tested is V 3 (100 mL).

[0062] Transfer V 4 (1~20mL) above-mentioned solution to be tested is placed in 150mL Erlenmeyer flask, adds 50mL distilled water, after shaking up, add 3 drops of methyl red indicator, make solution color be light yellow-green, use the sulfuric acid prepared in Example 1 Titrate the standard solution until the solution is orange-yellow and record it as the titration end point, and record the volume of the sulfuric acid standard solution consumed as V 5 , carry out a blank test without adding the solution to be tested under the same conditions, and record the volume of the sulfuric acid standard solution consumed as V 6 .

[0063] Calculate the m...

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Abstract

The invention provides a method for detecting the quality of a flue gas desulfurization agent. The method comprises the steps that an acid-base titration method is adopted to determine the mass content of organic cation substance in the flue gas desulfurization agent. Compared with the prior art, the mass content of the organic cation substance in the flue gas desulfurization agent is determined through the acid-base titration method to judge the mass of the flue gas desulfurization agent. The detection method is simple, and detection results are more accurate.

Description

technical field [0001] The invention relates to the technical field of desulfurization agents, in particular to a method for detecting the quality of flue gas desulfurization agents. Background technique [0002] Flue gas desulfurization is currently the main technical means to control sulfur dioxide pollution in the world. Flue gas desulfurization technology has a history of one hundred years, and there are many kinds of technologies used in industry, mainly limestone-gypsum method, ammonium sulfate method, double alkali method, ionic liquid method, organic amine method, magnesium oxide method, etc. These technologies The raw materials are basically the same, mainly using alkaline absorbent and acid gas SO x The reaction produces stable compounds that exist in the solid phase and / or liquid phase, thereby achieving flue gas desulfurization. [0003] From the perspective of circular economy, absorbents used in flue gas desulfurization technology are mainly divided into two ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/16
CPCG01N31/16
Inventor 邱正秋黎建明王建山张小龙
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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