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Method for preparing active carbon fiber for removing SO2 and its application

A technology of activated carbon fiber and SO2, which is applied in the fields of fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of failure to meet emission standards and decreased desulfurization activity, and achieve the effects of easy operation, low preparation cost and simple preparation

Inactive Publication Date: 2006-05-10
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But as the temperature rises from room temperature to 50-80°C, the desulfurization activity drops sharply, so that the emission standard cannot be met

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: Fe(NO 3 ) 3 Prepare a 1wt% aqueous solution, mix it with 1g of pitch-based activated carbon fiber and 2ml of aqueous solution, leave it at room temperature for 12 hours, and take out the activated carbon fiber loaded with salts. After drying at room temperature, dry overnight at 120°C. The activated carbon fibers loaded with metal salts are installed in the reaction furnace, and then the temperature of the furnace is raised to 50°C and the space velocity is 10000h -1 Feed containing SO 2 , O 2 and water vapor N 2 (SO 2 : 50ppm; O 2 : 3%; water vapor: 5%. The rest is N 2 ) for SO 2 removal. Detection of SO by Flame Photometer with Gas Chromatography 2 concentration. SO 2 Concentration divided by SO 2 The initial concentration calculated its removal rate, SO 2 The removal rate is 86%. Embodiment 2: Fe(NO 3 ) 3 Prepare a 20wt% aqueous solution, mix 1g of polyacrylonitrile-based activated carbon fiber with 5ml of the aforementioned aqueous sol...

Embodiment 3

[0018] Embodiment 3: Fe 2 (SO 4 ) 3 Made into a 10wt% aqueous solution, mixed with 1g of pitch-based activated carbon fiber and 3ml of the aforementioned aqueous solution, left at room temperature for 10h, and taken out the activated carbon fiber loaded with salts. After drying at room temperature, dry overnight at 100°C. Put the activated carbon fibers loaded with metal salts in the reaction furnace, and then raise the temperature of the furnace to 60°C and use a space velocity of 500h -1 Feed containing SO 2 , O 2 and water vapor N 2 (SO 2 : 1000ppm; O 2 : 3%; water vapor: 5%. The rest is N 2 ) for SO 2 removal. SO 2 The removal rate is 89%. All the other are with embodiment 1.

Embodiment 4

[0019] Embodiment 4: Fe 2 (SO 4 ) 3 Prepare a 5wt% aqueous solution, mix 1g of polyacrylonitrile-based activated carbon fiber with 4ml of the aforementioned aqueous solution, leave it at room temperature for 11 hours, and take out the activated carbon fiber loaded with salts. After drying at room temperature, dry overnight at 120°C. The activated carbon fibers loaded with metal salts are installed in the reaction furnace, and then the temperature of the furnace is raised to 80°C and the space velocity is 800h -1 Feed containing SO 2 , O 2 and water vapor N 2 (SO 2 : 1%; O 2 : 10%; water vapor: 20%. The rest is N 2 ) for SO 2 removal. SO 2 The removal rate is 97%. All the other are with embodiment 1.

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Abstract

One for SO removal at higher temperature 2 The preparation method of the catalyst is to formulate metal salts into a 1-20wt% aqueous solution, mix 1g of activated carbon fiber with 2ml of the aforementioned aqueous solution, leave it at room temperature for 12 hours, and take out the activated carbon fiber loaded with salts. After drying at room temperature, dry overnight at 120°C. Put 0.1g-2g of activated carbon fibers loaded with metal salts in the reaction furnace, and then raise the temperature of the furnace to 50-80°C, the SO 2 , O 2 and water vapor N 2 into the reaction furnace for SO 2 removal. The invention is simple to prepare and easy to operate, and the loaded metal salts can remove SO in the flue gas with high activity at a relatively high temperature such as 50-80°C without any treatment 2 , which has the advantage of low preparation cost.

Description

[0001] Field: [0002] The invention belongs to a method for removing SO 2 The preparation method of activated carbon fiber and its application method, in particular to a preparation method of activated carbon fiber loaded with metal salts and its removal of SO in flue gas 2 application method. Background technique: [0003] It is well known that SO emitted into the atmosphere 2 It has caused serious pollution to the atmospheric environment and poses a serious threat to the survival of humans, animals and plants. SO emissions 2 Mainly from coal-fired power generation, mineral smelting, petroleum refining and H 2 SO 4 production. As an energy source, coal is mainly converted and utilized through combustion. However, a large amount of coal burning will cause the atmosphere to be polluted by soot, which will cause economic losses to agriculture, forestry and material damage, and also seriously endanger human health. Therefore governing SO 2 Pollution is of great signific...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/12
Inventor 李开喜凌立成
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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