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Preparation technique of carbon-based material having energy-storage property

A preparation process and carbon-based technology, applied in the field of energy-storage carbon-based materials, can solve problems such as the inability to produce carbon-based materials that can absorb and store natural gas.

Inactive Publication Date: 2011-04-27
盐城市炭化工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to make natural gas better used in various fields of the national economy, it is necessary to change the multi-stage high-pressure compression storage method (CNG) of natural gas into the adsorption storage method (ANG), in order to solve the extremely unsafe factors brought about by the multi-stage high-pressure compression method. The adsorption storage method requires carbonaceous materials with high specific surface area and nano-scale microporous structure. The current method of industrial production of super activated carbon is the physical activation method of water vapor, which cannot produce carbonaceous materials suitable for adsorption and storage of natural gas. For this reason, this invention uses High-temperature strong alkali chemical activation method provides a process for mass production of carbonaceous materials with high specific surface area and nano-scale microporous structure

Method used

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  • Preparation technique of carbon-based material having energy-storage property
  • Preparation technique of carbon-based material having energy-storage property
  • Preparation technique of carbon-based material having energy-storage property

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Take petroleum pitch coke and grind it to 100-160um, use (KOH:NaOH 75:25): carbon 6:1, impregnate for 2 hours, transfer to the activation furnace, and input the set time and temperature at one time through the electronic intelligent program controller Change the program according to the following temperature rise and constant temperature steps: 750°C-770°C / 30min, then heat up 800°C-850°C / 30min, then heat up to 870°C / 30min, in N 2 Activated under protection, fully washed to neutral, and obtained a specific surface area of ​​3887m 2 / g, the iodine absorption value is 3750mg / g, the methylene blue value is 750mg / g, the nano-scale micropore diameter is 0.5-1.82nm, and the micropore volume accounts for 80-90% of the total pore volume.

Embodiment 2

[0035] Take petroleum pitch coke and grind it to 100-120um, use (KOH:NaOH 60:40): carbon 5:1, impregnate for 2 hours, transfer to the activation furnace and follow the steps of heating and constant temperature: 770°C / 30min, then heat up 820°C / 30min, then heated to 870°C / 30min, in N 2 Activated under protection, fully washed to neutral, and obtained a specific surface area of ​​3578m 2 / g, the iodine absorption value is 3350mg / g, the methylene blue value is 550mg / g, the nano-scale micropore diameter is 1-1.92nm, the micropore volume accounts for 75-85% of the total pore volume, and the adsorption amount of methane is inferior to the effect of experiment 1 .

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Abstract

The invention relates to a process for preparing carbon materials with the property of energy storage, comprising the following steps: adopting a high-temperature strong base activation method, using petroleum pitch coke as raw material, after processes of crushing and grinding, sieving, dipping, charring, catalyzing and activating, washing the base-containing carbon materials with water, then washing the materials with acid to neutral, then performing drying and alkali recovery processes, mass-producing the carbon materials with the property of energy storage which have specific surface area of 2500-4000m<2> / g, iodine sorption value of 2500-3500mg / g, methylene blue value of 600-1200mg / g, ash less than 1%, nano microporous aperture of 0.75-1.5nm and micro volume to total pore volume larger than 90-95%. The process meets the absorption and storage requirements of natural gas, thereby facilitating the safe and wide application of natural gas.

Description

Technical field [0001] The invention belongs to a preparation process of a carbonaceous material with storage performance, which uses petroleum pitch coke, fruit shell carbonized material, and coal-based carbonized material as raw materials, and adopts a high-temperature strong alkali chemical activation method to prepare a carbonaceous material with high specific surface area and nano-scale micropores. energy storage carbonaceous materials. The energy storage carbonaceous material produced by this process has a well-developed microporous structure, and is especially suitable for natural gas (methane) adsorption storage and high-energy storage capacitor materials. Background technique [0002] The national energy strategy adjustment during the Tenth Five-Year Plan period is mainly reflected in the popularization and utilization of natural gas. The smooth implementation of the "West-to-East Gas Transmission" project aims to promote "replacing oil with gas", "power generation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/00C01B31/08C01B31/10B01J20/20C01B32/336
Inventor 谢建纲黄振兴花锦柏张超周其新谢建明凌莉钱钧
Owner 盐城市炭化工业有限公司