Manganin high-temperature gas desulfurizer and preparation method thereof

Abstract

The invention relates to a manganin high-temperature gas desulfurizer and a preparation method thereof. The desulfurizer comprises the following components by weight percent: 80-95% of MnCO3, 5-20% of CuO, 5-15% of aluminum sol and 5% of pore-forming agent, wherein the pore-forming agent is one of starch or carbon black; and the aluminum sol and the pore-forming agent are added on the basis of the weight percent 100% of the MnCO3 and CuO. The preparation method comprises the following steps: adding a proper amount of ammonia water in nine hydrated aluminum nitrate used as raw material, and controlling the pH value of solution to 8.8-9.7 to obtain flocculent; filtering precipitate, adding a proper amount of water, and stirring the solution to turbid liquid; heating the turbid liquid to 40 DEG C-60 DEG C, adding a proper amount of nitric acid to control the ratio of acid to aluminum to 0.2-0.3; and heating to 80 DEG C-95 DEG C to obtain aluminum sol; based on the above weight percent, evenly ball-milling MnCO3, CuO and the pore-forming agent by a ball mill, adding the aluminum sol which is 5-15% of mixture, and drying for 4-6 hours at the temperature of 100 DEG C; extruding powder and molding; drying for 6 hours at the temperature of 100 DEG C; and roasting for 13-17 hours at the temperature of 850 DEG C-1000 DEG C, and obtaining the manganin high-temperature gas desulfurizer. The manganin high-temperature gas desulfurizer prepared by the preparation method has the characteristics of good high temperature desulfuration property, high breakthrough sulphur capacity and the like, and the preparation process is simple.

Description

technical field : [0001] The invention relates to a high-temperature gas desulfurizer and a preparation method thereof, in particular to a manganese-copper high-temperature gas desulfurizer and a preparation method thereof. It belongs to the technical field of gas desulfurization agent preparation technology. Background technique : [0002] Coal is the most abundant fossil fuel resource in the world, accounting for 92% of the world's fossil fuel reserves. Using coal as raw material to generate electricity is one of the most economical means of using coal. Now it has become a research hotspot for integrated gasification combined cycle power generation (IGCC) and Fuel cell power generation technology is the best way to clean and efficiently utilize coal. my country is the world's largest coal producer and coal consumer, and its coal consumption accounts for nearly 1 / 4 of the world's total coal consumption. Coal consumption accounts for about 3 / 4 of the country's total prim...

AI Technical Summary

Problems solved by technology

[0009] For more than 20 years, domestic and foreign countries have carried out in-depth research on gas desulfurization and developed a series of desulfurizers. Due to technical problems such as poor process stability, low desulfurization precision, easy pulverization, and low breakthrough sulfur capacity, high-temperature gas desulfurization has not been industrialized so far.

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