Renewable desulfurizing agent

A technology of desulfurization agent and modified carbon, which is applied in the direction of filter regeneration, combustible gas purification, combustible gas purification/transformation, etc. It can solve the problems that the adsorbent cannot be recycled and reused, the regeneration of the adsorbent is difficult, and the stability is poor, so as to promote Effects of contact, improvement of stability, and improvement of adsorption efficiency

Inactive Publication Date: 2022-07-22
吴忠市鹏昱新环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned adsorbents not only have the disadvantages of low sulfur capacity (adsorption capacity of sulfur dioxide), poor stability, and difficult regeneration of the adsorbent, but also the adsorbent after adsorption cannot be recycled, and the solid waste after desulfurization often becomes new. sources of pollution, these deficiencies limit the application of dry desulfurization

Method used

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  • Renewable desulfurizing agent
  • Renewable desulfurizing agent

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A renewable desulfurizer, the desulfurizer is a modified carbon composite metal organic framework material, and a preparation method thereof comprises the following steps:

[0031] S1. Preparation of modified carbon

[0032] Weigh 4 g of tetraethylene pentamine and disperse it in 100 mL of acetone solvent, stir until fully dissolved, add 8 g of activated carbon micropowder while stirring at room temperature, heat up to 40-50 ° C, continue to stir until dry, and obtain after drying. modified carbon;

[0033] Preparation of S2, tetracarboxylic acid ligands

[0034] Weigh 2.2 g of methyl p-hydroxybenzoate and 1.2 g of tetrabromopentane, respectively, and dissolve them in 100 mL of dimethylformamide. After fully stirring and dissolving, add 10 g of potassium carbonate, stir and heat up to 120-130° C. The reaction was kept stirring for 48-60h under a protective atmosphere. After the reaction was completed, it was cooled to room temperature and diluted with excess deionized...

Embodiment 2

[0039] A kind of renewable desulfurizing agent, its preparation method comprises the following steps:

[0040] S1. Preparation of modified carbon

[0041] Weigh 4 g of tetraethylene pentamine and disperse it in 100 mL of acetone solvent, stir until fully dissolved, add 8 g of activated carbon micropowder while stirring at room temperature, heat up to 40-50 ° C, continue to stir until dry, and obtain after drying. modified carbon;

[0042] S2. Preparation of copper metal particles

[0043] Weigh 2g of polyvinylpyrrolidone (Mw=5500) and dissolve it in 100mL of ethylene glycol, add 0.5g of copper chloride, stir and dissolve fully, then heat up to 170-180°C and keep warm for 10-20min, add acetone to dilute after the insulation is completed , separate the precipitate and wash it with acetone to obtain the copper metal particles;

[0044] Preparation of S3 and tetracarboxylic acid ligands

[0045]Weigh 2.2 g of methyl p-hydroxybenzoate and 1.2 g of tetrabromopentane, respectivel...

Embodiment 3

[0050] A renewable desulfurizer loaded with ionic liquid;

[0051] The preparation method of the desulfurizer loaded with ionic liquid comprises the following steps:

[0052] (1) 4 g of 1,2,4,5-tetrakis(bromomethyl)benzene, 3.6 g of 1-vinylimidazole and 0.2 g of 2,6-di-tert-butyl-p-cresol were weighed and dissolved in 200 mL of acetonitrile solvent After fully stirring and dissolving, the temperature was raised to 60-70°C and the reaction was stirred and refluxed for 48-60h. After the reaction was completed, the precipitation was separated, washed and dried in vacuo to obtain the monomer 1,2,4,5-tetrakis(1'-methylene). yl-3'-vinylimidazolium bromide) benzene;

[0053] (2) Dispersing and dissolving the monomer obtained in step (1) in methanol or ethanol solution to prepare a monomer solution with a concentration of 8 g / L, and immersing the desulfurizing agent obtained in Example 1 in the monomer solution In the bulk solution, fully stirred and mixed, heated to 40-50° C., soak...

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Abstract

The invention provides a renewable desulfurizer, and belongs to the field of flue gas desulfurizers, the desulfurizer is a modified carbon composite metal organic framework material, the modified carbon is polyethylene polyamine modified activated carbon micro powder, the metal organic framework material takes indium (III) as a metal ion core, and the metal ion core is a metal ion core. The compound is prepared by taking tetra (4-(carboxyl phenyl) methoxyl) formic acid as a ligand through a hydrothermal synthesis reaction. The adsorption capacity and the adsorption efficiency on sulfur dioxide are improved, and the MOF material can be desorbed at normal temperature in a pressure reduction manner after adsorption saturation.

Description

technical field [0001] The invention relates to the field of flue gas desulfurizers, in particular to a renewable desulfurizer. Background technique [0002] my country's special primary energy storage and consumption structure of "rich coal, less oil, and lack of natural gas" determines that coal will remain the most abundant, most reliable and cheapest basic energy in my country for a long time to come. With the rapid development of thermal power industry With the continuous improvement of transportation, the consumption of coal has increased sharply. Since coal itself contains a certain amount of sulfur, SO 2 Emissions also increase, while SO 2 It belongs to the third category of carcinogens. It is directly discharged into the air and easily combined with water vapor in the air to form acid rain, which erodes building materials, endangers human health, and destroys the ecological environment. It is one of the important environmental factors restricting the sustainable dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/34B01D53/02
CPCB01J20/226B01J20/3491B01D53/02B01D2257/302B01D2253/204
Inventor 李军鹏李翔
Owner 吴忠市鹏昱新环保科技有限公司
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