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Modified magnesite flue gas desulfurizing agent and preparation method thereof

A desulfurizer and magnesia technology, applied in the field of environmental engineering, can solve the problems of limited use range, difficult separation, fine manganese dioxide particles, etc., and achieve the effects of improving desulfurization effect, strengthening adsorption effect, and low production cost

Inactive Publication Date: 2018-02-16
安徽铭能保温科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, manganese dioxide particles are small and difficult to separate, which limits its application range

Method used

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Embodiment Construction

[0020] A modified magnesia flue gas desulfurizer, prepared by the following method:

[0021] (1) Mix carboxymethyl chitosan, polyvinyl alcohol and water at a mass ratio of 13:5:8, heat to 65°C, and stir evenly to obtain organic mother liquor A for later use;

[0022] (2) Add sodium lauryl sulfate with a mass concentration of 0.2% to an aqueous sodium hydroxide solution with a mass fraction of 15%, and stir evenly to obtain an organic mother liquor B for subsequent use;

[0023] (3) Put the magnesia into a high-temperature furnace, bake it at 500°C for 60 minutes, take it out after cooling, crush it through a 30-mesh sieve, put it into clean water and boil it for 30 minutes, cool to room temperature and filter to remove floating ash and impurities in the water , and then placed in a drying oven to dry for 10 hours, the dried powder was added to the potassium permanganate solution with a mass fraction of 2.7% according to the solid-to-liquid ratio of 1:25g / mL, soaked for 7 hours...

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Abstract

The invention discloses a modified magnesite flue gas desulfurizing agent and a preparation method thereof. The modified magnesite flue gas desulfurizing agent is prepared from carboxymethyl chitosan,a macromolecular material, lauryl sodium sulfate, magnesite, tetraethoxysilane, ferroferric oxide powder and other raw materials. According to the modified magnesite flue gas desulfurizing agent disclosed by the invention, the modified magnesite is wrapped by two organic solutions, so that the surface tension of the desulfurizing agent can be reduced, the gas-liquid specific surface area is effectively enlarged, the mass transfer rate is increased, and the dispersivity of the desulfurizing agent is improved; the desulfurizing agent can be in more effective contact with sulfur dioxide, so thatthe adsorption intensity is enhanced, and the desulfurizing effect is increased; meanwhile, the modified magnesite flue gas desulfurizing agent is low in production cost, high in desulfurizing efficiency and high in system stability and can be widely used in the field of desulfurization.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a modified magnesia flue gas desulfurizer and a preparation method thereof. Background technique [0002] Coal occupies a dominant position in my country's energy production and consumption structure, and its output accounts for the vast majority of the country's energy output. However, with the continuous development of coal energy, the corresponding industries that use coal as energy produce a large amount of waste gas. These Exhaust gas is discharged into the environment, causing environmental pollution. In the exhaust gas polluted by coal burning, the content of sulfur is the majority. This requires manufacturers to adopt effective desulfurization methods to control the pollution of exhaust gas. [0003] Among many flue gas desulfurization technologies, wet flue gas desulfurization has been the most widely used as a relatively mature desulfurization technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30B01D53/02
Inventor 杨华亮
Owner 安徽铭能保温科技有限公司
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