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Absorbent solution and preparation method thereof

An absorbent and solution technology, applied in the field of absorbent solution and its preparation, achieves the effects of easy preparation conditions, fast reaction and high absorption efficiency

Inactive Publication Date: 2017-06-20
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, currently SO 2 The removal efficiency and cycle production efficiency need to be further improved, and a new type of high-efficiency SO 2 Absorbents are important

Method used

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  • Absorbent solution and preparation method thereof
  • Absorbent solution and preparation method thereof

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preparation example Construction

[0033] This embodiment also provides a method for preparing an absorbent solution, including:

[0034] After the iron salt complexing agent and stabilizer are dissolved in the aqueous solution of soluble iron salt, then dissolved in SO 2 absorbent. The formed solvent can effectively improve the stability of the iron complex and prevent the degradation of the complex iron.

[0035] Further, after dissolving into SO 2 Before the absorbent, the synergist is dissolved in the aqueous solution. Further, to increase the Fe 2+ oxidation regeneration rate and saturated sulfur capacity.

[0036] Preferably, in this embodiment, ferric chloride is first dissolved in water, then citric acid and ethylenediaminetetraacetic acid are added to dissolve completely, then anthraquinones are added, and finally ethylenediamine is added to obtain an absorbent solution . Therefore, it can be ensured that the absorbent solution has a high absorption efficiency and a high reaction rate.

[0037] ...

Embodiment 1

[0039] Prepare 1L absorbent solution, in which the concentration of ethylenediamine is 0.05mol / L, the concentration of ethylenediaminetetraacetic acid is 0.005mol / L, the concentration of ferric chloride is 0.1mol / L, the concentration of citric acid is 2mol / L and anthraquinone The concentration of similar substances is 0.01mol / L.

[0040] The preparation method of the absorbent solution is as follows: first dissolve the above-mentioned ferric chloride in water, then add citric acid and ethylenediaminetetraacetic acid to dissolve completely, then add anthraquinones, and finally add ethylenediamine to obtain absorbent agent solution.

Embodiment 2

[0042] Prepare 1L absorbent solution, in which the concentration of ethylenediamine is 3mol / L, the concentration of ethylenediaminetetraacetic acid is 0.2mol / L, the concentration of ferric chloride is 4mol / L, the concentration of citric acid is 0.05mol / L and anthraquinones The concentration of the substance is 0.3mol / L.

[0043] The preparation method of the absorbent solution is as follows: first dissolve the above-mentioned ferric chloride in water, then add citric acid and ethylenediaminetetraacetic acid to dissolve completely, then add anthraquinones, and finally add ethylenediamine to obtain absorbent agent solution.

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Abstract

The invention relates to the technical field of gas purification and in particular relates to an absorbent solution and a preparation method thereof. The absorbent solution comprises a 0.05-3mol / L SO2 absorbent, a 0.005-0.2mol / L stabilizer, a 0.1-4mol / L soluble iron salt and a 0.05-2mol / L iron salt complexing agent. A synergistic effect is achieved due to mutual compatibility in the previous substances, so that the SO2 gas can be effectively removed. The absorbent solution is used for supergravity removal of SO2 and is fast in reaction, high in removal efficiency, low in cost and short in gas-liquid reaction retention. The preparation method of the absorbent solution comprises the following steps: dissolving the iron salt complexing agent and the stabilizer in an aqueous solution of the soluble iron salt, and then dissolving in the SO2 absorbent, thereby obtaining the product. The preparation conditions are simple and feasible, and the prepared absorbent solution is small in usage of absorption liquid, fast in reaction and high in absorption efficiency.

Description

technical field [0001] The invention relates to the technical field of gas purification, in particular to an absorbent solution and a preparation method thereof. Background technique [0002] The flue gas emitted by industrial kilns in building materials, thermal power generation, metal smelting and other industries contains a large amount of SO 2 , the formed smog and acid rain have caused great harm to the human living environment. In particular, the proportion of coal burning as the main energy source in the consumption structure will remain unchanged for a long time. Therefore, the development of efficient and low-cost exhaust gas desulfurization technology will have far-reaching economic and environmental significance. [0003] Hypergravity technology refers to the acceleration under the gravity of the earth (9.8m / s 2 ) technology to enhance multiphase flow transfer and reaction process under much larger conditions. It has the advantages of small size, light weight,...

Claims

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Application Information

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IPC IPC(8): B01D53/14
CPCB01D53/1481B01D53/1493B01D2252/2041B01D2252/60B01D2258/0283
Inventor 管浩张长森
Owner YANCHENG INST OF TECH
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