Manganin high-temperature gas desulfurizer and preparation method thereof

A desulfurizing agent, high temperature technology, used in combustible gas purification, combustible gas purification/transformation, petroleum industry, etc., to achieve high desulfurization accuracy, improve desulfurization accuracy, and reduce equipment investment.

Inactive Publication Date: 2011-04-20
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Manganin high-temperature gas desulfurizer and preparation method thereof
  • Manganin high-temperature gas desulfurizer and preparation method thereof

Examples

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Effect test

Embodiment 1

[0025] Use aluminum nitrate nonahydrate as raw material to make a 0.1mol / L solution, then add a certain amount of ammonia water to control the pH value of the solution between 8.8 and 9.7 to obtain a flocculent precipitate, filter the precipitate and then add an appropriate amount of water to stir and dissolve it into Suspension, heat the suspension to 40°C-60°C, add a certain amount of nitric acid to control the acid-aluminum ratio at 0.2-0.3, and then raise the temperature to 80°C-95°C to obtain aluminum sol; weigh 5.74g of copper oxide, 71.68 g of manganese carbonate and 3.87g of pore-forming agent starch were evenly ball-milled, then added 7.74g of sol and stirred evenly, placed in an oven (100°C) to dry for 4-6 hours, then added 15-35% of the mixture's mass of water, and then It is extruded into a cylindrical (Ф1~3mm) desulfurizer body, dried naturally for 24 hours, then placed in an oven at 100°C for 6 hours, and finally placed in a muffle furnace for 13-13 hours at 900°C...

Embodiment 2

[0032] Use aluminum nitrate nonahydrate as raw material to make a 0.1mol / L solution, then add a certain amount of ammonia water to control the pH value of the solution between 8.8 and 9.7 to obtain a flocculent precipitate, filter the precipitate and then add an appropriate amount of water to stir and dissolve it into Suspension, the temperature of the suspension is raised to 40°C-60°C and a certain amount of nitric acid is added to control the acid-aluminum ratio at 0.2-0.3, and then the temperature is raised to 80°C-95°C to obtain aluminum sol, and 57.34g of manganese carbonate, 4.6 g of copper oxide and 3.1g of pore-forming agent carbon black are prepared into powder, the molar ratio of Mn:Cu in the powder is 9:1, and after the powder is evenly ball milled, add 5% of the total mass of manganese carbonate and copper oxide powder respectively , 10%, 15% aluminum sol as the bonding aid to prepare three different powders, and then place them in an oven (100°C) to dry for 4 to 6 ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/20
Inventor 郭曙强李德颀丁伟中潘晋波李玉龙
Owner SHANGHAI UNIV
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