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Method of using forestry and agricultural wastes to prepare long-chain fatty acid and nitrogen-doped carbon

A technology for agricultural and forestry waste and long-chain fatty acids, which is applied in the field of pyrolysis of agricultural and forestry waste and microalgae, and achieves the effects of wide application prospects, reduced content of acetic acid and other oxygen-containing substances, and high selectivity

Active Publication Date: 2017-08-29
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of the invention solves the problem of high-value utilization of biomass waste pyrolysis bio-oil and pyrolysis carbon

Method used

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  • Method of using forestry and agricultural wastes to prepare long-chain fatty acid and nitrogen-doped carbon
  • Method of using forestry and agricultural wastes to prepare long-chain fatty acid and nitrogen-doped carbon
  • Method of using forestry and agricultural wastes to prepare long-chain fatty acid and nitrogen-doped carbon

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Embodiment 1

[0054] The embodiment of the present invention describes a method for preparing long-chain fatty acids and nitrogen-doped carbon by utilizing agricultural and forestry waste and microalgae, and the method specifically includes the following steps:

[0055] S1: Crush and sieve the bamboo to less than 120 mesh, put the bamboo and Nannochloropsis in an oven at 105°C to dry for 24 hours, and mix the bamboo and Nannochloropsis at a mass ratio of 1:0 (1:0 is equivalent to only one Raw materials, the purpose is to compare the results after mixing the two raw materials, highlighting the effect of mixing the two raw materials together, including the following 0:1 also has a similar contrast effect) to fully mix to obtain agricultural and forestry waste and microalgae mixture;

[0056] S2: Use a fixed-bed reactor with a diameter of 45 mm and a length of 60 mm for mixed pyrolysis. After the reactor is heated to a specified temperature of 600 ° C, 2 g of biomass mixture is quickly sent in...

Embodiment 2

[0065] This embodiment is the same as Embodiment 1, except that bamboo and Nannochloropsis are fully mixed with a mass ratio of 3:1.

Embodiment 3

[0067] This embodiment is the same as Embodiment 1, except that bamboo and Nannochloropsis are fully mixed with a mass ratio of 2:1.

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Abstract

The invention discloses a method of using forestry and agricultural wastes to prepare long-chain fatty acid and nitrogen-doped carbon; the method comprises: mixing forestry and agricultural wastes with microalgae in a certain ratio, thermally decomposing an inert atmosphere to obtain a bio-oil product rich in high-added-value long-chain fatty acid; soaking thermally decomposed carbon in KOH solution to carry an activator, activating at high temperature to obtain nitrogen-doped carbon material having high specific surface area and rich active nitrogen-bearing functional groups. No catalysts are used herein to prepare the long-chain fatty acid, and the method has the advantages of greenness, good process simplicity, good operational convenience, and low cost; the prepared nitrogen-doped carbon material with excellent features is widely applicable to adsorbents, catalysts, electrode materials and other fields. The method provides high-value all-component utilization for biomass.

Description

technical field [0001] The invention relates to the field of pyrolysis of agricultural and forestry waste and microalgae, in particular to a method for preparing long-chain fatty acids and nitrogen-doped carbon by using agricultural and forestry waste and microalgae. Background technique [0002] Biomass is the only renewable carbon source. The total amount of biomass grown on the earth is about 140-180 billion tons per year, with a heat equivalent of 3*10 21 About J, equivalent to 10 times the total energy consumption in the world at present. Biomass resources mainly include forestry resources, agricultural resources, domestic sewage and industrial organic wastewater, urban solid waste and livestock manure, etc. The most common of these is agricultural and forestry waste. my country's agricultural and forestry waste reaches 1 billion tons per year. Using my country's rich agricultural and forestry waste resources to develop renewable petroleum to replace liquid fuels is o...

Claims

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Application Information

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IPC IPC(8): C10B53/02C10B57/10C10G1/00C01B32/348C07C51/00C07C53/126C07C57/03C07C57/12
CPCC01P2002/85C01P2006/12C01P2006/80C07C51/00C10B53/02C10B57/10C10G1/00C10G2300/1014C07C53/126C07C57/03C07C57/12Y02E50/10
Inventor 陈汉平陈伟陈应泉杨海平王贤华邵敬爱张雄曾阔张世红
Owner HUAZHONG UNIV OF SCI & TECH
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