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Regenerable metal oxide desulfurizer and its prepn. process

A preparation process and technology for metal regeneration, applied in metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, chemical/physical processes, etc. pollution and other problems, to achieve the effect of reducing the operating cost of desulfurization, fast desulfurization reaction, and high desulfurization efficiency

Inactive Publication Date: 2002-10-23
向军 +1
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

traditional control SO 2 The methods of emission mainly include wet flue gas desulfurization, rotary spray dry desulfurization, and calcium spray desulfurization in the furnace, etc. The desulfurizers used are mostly quicklime and limestone. Wet method, control method of desulfurization process" (Patent No. 87102943) and "Exhaust Flue Desulfurization Method" (Patent No. 87106325), etc., but there are high desulfurization costs, and the desulfurization by-products are difficult to reuse, and landfill is generally used, so there are secondary Pollution and other issues, in addition, the use of wet desulfurization technology also generates a large amount of waste water, resulting in water pollution

Method used

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Embodiment Construction

[0024] Enumerate the embodiment of the present invention below:

[0025] DS01 type desulfurizer: selected 88% γ-Al 2 o 3 powder, add 5% ZnO and 5% catalyst NiO and TiO 2 , the rest is 2% Na 2 O, FeO, put into the bonding machine, add water, fully stir to form a paste, and then put it into the molding machine for molding, after that, put it in an oven to dry at 105°C for 4 hours, and bake it at 650°C to make a paste. Xihuan carrier, the outer dimensions of the carrier are: outer diameter 18mm, inner diameter 4mm, length 18mm, bulk density about 0.7g / ml, wear rate100N / piece. Put the prepared catalytic support into saturated CuSO 4 In the aqueous solution, soak for about 1-2 hours, put it in an oven and dry it at 230°C for about 1 hour, then take out the carrier and put it in saturated CuSO 4 Soaking in an aqueous solution, and then drying, repeated four times in this way to obtain an intermediate carrier. Then, put the intermediate carrier into a constant temperature furna...

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PUM

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Abstract

The desulfurizing agent is made from metal oxide (oxide of copper, zinc, iron, sodium, nickel and titanium, etc.) as main component, and can be divided into two types of DSO1 and DSO2. The preparation method of DSO1 includes the following steps: firstly, preparing carrier using Al2O3, ZnO, NiO, TiO2 and Na2O as component, the attaching the metal oxide to the carrier, and the preparation method ofDSO2 includes the following steps: mixing the metal oxide, activating agent, adhesive and pore-forming agent and making them undergo the one-step forming process to obtain the invented product. It can be used for desulfurizing and cleaning fuel gas and flue gas, and its desulfurizing efficiency can be up to 90%.

Description

technical field [0001] The invention relates to a method for removing SO in flue gas 2 Renewable metal oxide desulfurizer for gas and its preparation process. Background technique [0002] SO contained in flue gas (gas) released by burning fossil fuels (coal, oil, natural gas, etc.) in energy, chemical, metallurgy, electronics and other industries 2 Cause serious pollution to the atmosphere, my country has become the world's largest SO 2 As the country with the largest emission and the third largest acid rain area, environmental issues have become a key issue for the sustainable development of my country's national economy. In recent years, the Chinese government has paid great attention to environmental issues. For example, my country's Environmental Protection Law has clearly stipulated that power plant boilers that burn coal with a sulfur content greater than 1% must be equipped with desulfurization facilities. [0003] In recent years, the...

Claims

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Application Information

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IPC IPC(8): B01D53/18B01D53/50B01D53/86B01J20/06B01J23/72B01J37/02
Inventor 向军孙学信
Owner 向军
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