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

A preparation process and carbonaceous technology, which is applied in the field of energy storage carbonaceous materials, and can solve problems such as the inability to produce carbonaceous materials that absorb and store natural gas

Inactive Publication Date: 2008-08-27
盐城市炭化工业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

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Experimental program
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Effect test

Embodiment 1

[0033]Take the petroleum pitch coke and grind it to 100~160um, use (KOH:NaOH is 75:25): carbon at 6:1, soak for 2h, transfer to the activation furnace and input the set time and temperature at one time through the electronic intelligent program controller The change program is carried out according to the following heating and constant temperature steps: 750℃~770℃ / 30min, then 800℃~850℃ / 30min, then heating to 870℃ / 30min, in N 2 Activated under protection, and then fully washed to neutrality to obtain a specific surface area of ​​3887m 2 / g, the iodine absorption value is 3750mg / g, the methylene blue value is 750mg / g, the nanometer pore size is 0.5-1.82nm, and the pore 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 is 60:40): charcoal 5:1, impregnate for 2h, transfer to activation furnace according to the following heating and constant temperature steps: 770℃ / 30min, then heating 820℃ / 30min, then heat up to 870℃ / 30min, at N 2 Activated under protection, and then fully washed to neutrality to obtain a specific surface area of ​​3578m 2 / g, the iodine absorption value is 3350mg / g, the methylene blue value is 550mg / g, the nanometer pore size is 1~1.92nm, and the pore volume accounts for 75~85% of the total pore volume. The adsorption capacity of methane is inferior to the effect of experiment 1. .

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Abstract

A process for preparing carbon material with the property of energy storage is a method of high-temperature strong base activation, which takes petroleum pitch coke as raw material and is composed of processes of crushing and grinding, screening, charring, catalyzing and activating, washing, drying and alkali recovery. The energy storage carbon material can be mass-produced and has specific surface area of 2500-4000m2g, iodine sorption value 2500-3500mg/g, methylene blue value of 600-1200mg/g, ash less than 1%, nano microporous aperture of 0.75-1.5mm and micro volume rate larger than 90-95%. The process particularly meets the absorption and storage requirements, thereby facilitating the wide and safe application of natural gas.

Description

Technical field [0001] The invention belongs to a process for preparing carbonaceous material with storage performance. It uses petroleum pitch coke, nutshell carbonized material, and coal-based carbonized material as raw materials, and adopts a high-temperature strong alkali chemical activation method to prepare nano-scale micropores with high specific surface area Energy storage carbon materials. The energy storage carbon material produced by this process has a developed microporous structure and is particularly suitable for natural gas (methane) adsorption storage and high-energy storage capacitor materials. Background technique [0002] The adjustment of the national energy strategy during the Tenth Five-Year Plan period is mainly reflected in the promotion and application of natural gas. The smooth implementation of the “West-East Gas Pipeline” project aims to promote “gas instead of oil”, “gas power generation”, and “urban gasification”. With the decline in oil reserves, pe...

Claims

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Application Information

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Patent Type & Authority Applications(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
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