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Modified activated carbon, preparation method thereof and method for adsorbing hydrogen sulfide using modified activated carbon

A technology of activated carbon and hydrogen sulfide, applied in chemical instruments and methods, separation methods, other chemical processes, etc., can solve the problem that hydrogen sulfide is difficult to meet the needs, and achieve good effect and large adsorption capacity

Inactive Publication Date: 2012-07-18
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, the activated carbon prepared by the above method is still difficult to meet the current needs when adsorbing hydrogen sulfide, especially the need to adsorb hydrogen sulfide at a specific temperature and concentration.

Method used

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  • Modified activated carbon, preparation method thereof and method for adsorbing hydrogen sulfide using modified activated carbon
  • Modified activated carbon, preparation method thereof and method for adsorbing hydrogen sulfide using modified activated carbon
  • Modified activated carbon, preparation method thereof and method for adsorbing hydrogen sulfide using modified activated carbon

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Effect test

Embodiment 1

[0052] Measure 3 parts of 20ml activated carbon, place activated carbon and water in a high-temperature reactor according to the volume ratio of 2:3, first modify it in a high-temperature reactor at 270°C for 3 hours, and bake it in an oven at 85°C for 3 hours, then Respectively with mass fractions of 3%, 7% and 15% K 2 CO 3 The solution is used as the impregnating liquid, the volume ratio of activated carbon and impregnating liquid is 4:3, impregnated at 50°C for half an hour, the impregnated activated carbon is washed with distilled water until neutral, then baked in an oven at 85°C for 3 hours, and calculated For: GS270KCO5003, GS270KCO5007 and GS270KCO5015, the three kinds of activated carbon are heated at a temperature of 80°C and a space velocity of 900h -1 , the imported hydrogen sulfide concentration is 750-850mg / m 3 Adsorption of hydrogen sulfide under certain conditions, detection of H at the inlet and outlet 2 S concentration, the adsorption curve as figure 1 . ...

Embodiment 2

[0054] Measure 3 parts of 20ml activated carbon, respectively in the high-temperature reactor, the volume ratio of activated carbon and water is 2:3, first modify it in the high-temperature reactor at 270°C for 3 hours, and bake it in an oven at 85°C for 3 hours, use mass Score 7% K 2 CO 3 The solution was impregnated at 20°C, 50°C, and 80°C for half an hour (the volume ratio of activated carbon to impregnation solution was 4:3), and the impregnated activated carbon was washed with distilled water until it was neutral, and then dried in an oven at 85°C. 3 hours, and counted as: GS270KCO2007, GS270KCO5007 and GS270KCO8007, made of activated carbon with different impregnation temperatures. Prepared activated carbon at a temperature of 80°C and a space velocity of 900h -1 , the imported hydrogen sulfide concentration is 750-850mg / m 3 The adsorption of hydrogen sulfide is carried out under the conditions, and the adsorption curve is as follows figure 2 .

Embodiment 3

[0056] Measure 2 parts of 20ml activated carbon, respectively in the high-temperature reaction kettle, the volume ratio of activated carbon and water is 2:3, first modify it in a high-temperature reaction kettle at 270°C for 3 hours, bake it in an oven at 85°C for 3 hours, and then dry it in a high-temperature reaction kettle for 3 hours. With mass fraction of 7% CuSO 4 and KOH solution at 50°C for half an hour (the volume ratio of activated carbon to impregnation solution is 4:3), the impregnated activated carbon is washed with distilled water until neutral, and then baked in an oven at 85°C for 3 hours, and calculated as : GS270CuSO5007 and GS270KOH5007 to obtain different modified solutions. The prepared GS270CuSO5007 and GS270KOH5007, at a space velocity of 900h -1 , Intake concentration 750-850mg / m 3 , investigated their removal of H at different temperatures of 30°C, 50°C, 70°C, 80°C and 90°C 2 S capacity, CuSO 4 The adsorption curves of modified activated carbon imp...

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Abstract

The invention relates to modified activated carbon, a preparation method of the modified activated carbon, and a method for adsorbing hydrogen sulfide using the modified activated carbon. The modified activated carbon is prepared by the method comprising the steps of: 1) mixing the raw material activated carbon with water, adding the mixture into a high-temperature reaction kettle for high-temperature modification, and then drying the high-temperature modified activated carbon; 2) then dipping the high-temperature modified activated carbon into KOH solution or CuSO4 solution for solution dipping modification; and 3) washing the activated carbon modified by dipping by distilled water to be neutral, drying again to obtain the combined modified activated carbon. The modified activated carbonhas good adsorptive capacity for hydrogen sulfide and greatly improves the sulfur capacity, thus being used for disposing hydrogen sulfide in a centralization-breeding factory.

Description

technical field [0001] The invention belongs to the field of polluted air purification, and in particular relates to a modified activated carbon, a preparation method and a method for absorbing hydrogen sulfide, especially the use and method of using the modified activated carbon to remove hydrogen sulfide in intensive farms. Background technique [0002] In the past ten years, with the expansion of the city scale, intensive breeding plants have continued to develop, bringing greater economic profits and facilitating market demand. However, the ensuing environmental problems cannot be ignored, and the smell it emits is unpleasant. , when it is serious, it will also cause discomfort to the people living around it, seriously affecting the quality of people's living environment, so the research and treatment of this kind of malodorous gas has great practical significance. h 2 S is the main odor-causing substance of farm odor, and its treatment is imminent. The adsorption metho...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01D53/02
Inventor 梁美生康文凯郝瑞刚陈文杰郑海涛
Owner TAIYUAN UNIV OF TECH
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