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Preparation process of special activated carbon for desulfurization

A preparation process and activated carbon technology, which is applied in the field of activated carbon, can solve the problems of poor adsorption capacity and recycling capacity of activated carbon, and achieve the effects of enhancing the porosity of raw materials, increasing the degree of carbonization of raw materials, and saving costs

Active Publication Date: 2021-06-11
东至县森茂炭业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, activated carbon is widely used in desulfurization technology, but the adsorption capacity and recycling capacity of activated carbon are poor

Method used

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  • Preparation process of special activated carbon for desulfurization

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Comparison scheme
Effect test

Embodiment 1

[0022] A preparation process of special activated carbon for desulfurization, comprising the following steps:

[0023] (1) Crush the raw materials into 200-500 mesh granules, put the granular raw materials into a pressure tank for pressure treatment, stop pressurization after the pressure reaches 5.5MPa and keep the pressure for 30 minutes, and then release the pressure tank within 1 minute Pressure to normal pressure; raw material is fruit shell.

[0024] (2) mix the raw material after pressure treatment with magnesium powder of raw material quality 0.5%, 0.2% sodium hydroxide, the mixed material is heated to 115 ℃, constantly stir the mixed material in the heating process, after heating for 30 minutes, place the mixed material Freeze in a low-temperature freezer at -50°C for 1-4 hours;

[0025] (3) take out the mixture after freezing and cool naturally to normal temperature, and drop into its mass ratio 0.01% bacillus in the mixture, put the mixture into the blasting machin...

Embodiment 2

[0031] A preparation process of special activated carbon for desulfurization, comprising the following steps:

[0032] (1) Crush the raw materials into 200-500 mesh granules, put the granular raw materials into a pressure tank for pressure treatment, stop pressurization after the pressure reaches 5MPa and keep the pressure for 30 minutes, and then release the pressure tank within 1 minute to atmospheric pressure; the raw material is wood.

[0033] (2) Mix the raw material after the pressure treatment with the magnesium powder of raw material quality 0.5%, the sodium hydroxide of 0.2%, the mixed material is heated to 105 ℃, constantly stirs the mixed material in the heating process, after heating 30 minutes, put the mixed material Freeze in a low-temperature freezer at -50°C for 1-4 hours;

[0034] (3) take out the mixture after freezing and cool naturally to normal temperature, and drop into its mass ratio 0.01% bacillus in the mixture, put the mixture into the blasting machi...

Embodiment 3

[0040] A preparation process of special activated carbon for desulfurization, comprising the following steps:

[0041] (1) Crush the raw materials into 200-500 mesh granules, put the granular raw materials into a pressure tank for pressure treatment, stop pressurization after the pressure is increased to 6MPa and keep the pressure for 30 minutes, and then release the pressure tank within 1 minute to atmospheric pressure; the raw material is a mixture of sawdust, wood and spent activated carbon.

[0042](2) mix the raw material after the pressure treatment with the magnesium powder of raw material quality 0.5%, the sodium hydroxide of 0.2%, the mixed material is heated to 130 ℃, constantly stirs the mixed material in the heating process, after heating 30 minutes, put the mixed material Freeze in a low-temperature freezer at -50°C for 1-4 hours;

[0043] (3) take out the mixture after freezing and cool naturally to normal temperature, and drop into its mass ratio 0.01% bacillus...

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Abstract

The invention relates to the field of activated carbon, in particular to a preparation process of special activated carbon for desulfurization, which comprises the following steps: pressurization and pressure relief treatment; heating and freezing; explosion spraying and expansion; cold blowing; carbonization; activation. The adsorption capacity of activated carbon of the present invention to sulfur is 10-15 times that of ordinary activated carbon, and magnesium powder and sodium hydroxide are mixed into raw materials to help improve the degree of carbonization of raw materials. Activated carbon adsorbed with sulfur can be placed in hot water to separate sulfur into water, and then the activated carbon can be reused after drying, which greatly saves the cost.

Description

technical field [0001] The invention relates to the field of activated carbon, in particular to a preparation process of activated carbon special for desulfurization. Background technique [0002] Activated carbon. It is black powder or massive, granular, honeycomb amorphous carbon, and there are also regular crystalline carbons. In addition to carbon elements, activated carbon also contains two types of admixtures: one is chemically combined elements, mainly oxygen and hydrogen, these elements are left in the carbon due to incomplete carbonization, or in the activation process, foreign Non-carbon elements are chemically combined with the surface of activated carbon. For example, when activated by water vapor, the surface of activated carbon is oxidized or oxidized by water vapor; another type of admixture is ash, which is the inorganic part of activated carbon; ash in activated carbon is easy to cause secondary pollution . [0003] In terms of element composition, more t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/336C01B32/348C01B32/342C01B32/324C01B32/33B01D53/02B01J20/20
CPCB01D53/02B01D2253/102B01D2257/30B01J20/20
Inventor 洪闪松
Owner 东至县森茂炭业有限公司