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Method for preparing biochar by using thermal plasma and application

A technology of thermal plasma and biochar, applied in the direction of biofuel, special form of dry distillation, petroleum industry, etc., to achieve high efficiency, high adsorption and removal capacity, and short processing time

Inactive Publication Date: 2022-01-28
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The application of plasma in the field of biochar in the prior art mainly uses plasma technology to modify the surface of biochar; at present, there are no reports at home and abroad that use plasma technology to directly process plant straw to prepare biochar

Method used

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  • Method for preparing biochar by using thermal plasma and application
  • Method for preparing biochar by using thermal plasma and application
  • Method for preparing biochar by using thermal plasma and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method of preparing biocompancy using hot plasma, including the following steps:

[0042] (1) Add 10g wheat straw (no need to be pulverized), the reaction crucible is placed in the insulation vacuum, and the vacuum pump is vacuum, then blow nitrogen forming a nitrous environment (vacuum pressure 19-29Pa, nitrogen pressure 600-850Pa) ;

[0043] (2) Open the plasma torch, the plasma torch spout align wheat straw, current modulation 180A in step (1), reaction for 3 min;

[0044] (3) After the reaction is completed, the temperature vacuum chamber is kept to room temperature, and the crucible is removed.

Embodiment 2

[0046] A method of preparing biocompancy using hot plasma, including the following steps:

[0047] (1) Add 10 g of wheat straw in the graphite crucible, and the reaction crucible is placed in the insulation vacuum chamber, and the vacuum pump is vacuum, then the nitrogen is blown into a nitrous environment (vacuum pressure 19-29Pa, the nitrogen pressure is 600-850Pa);

[0048] (2) Open the plasma torch, the plasma torch spout align wheat straw in step (1), and the current is adjusted to 180A, and the reaction is 4 min;

[0049] (3) After the reaction of step (2), the temperature of the air vacuum is kept at room temperature, takes out the crucible, and collects bio.

Embodiment 3

[0051] (1) Add 10 g of wheat straw in the graphite crucible, and the reaction crucible is placed in the insulation vacuum chamber, and the vacuum pump is vacuum, then the nitrogen is blown into a nitrous environment (vacuum pressure 19-29Pa, the nitrogen pressure is 600-850Pa);

[0052] (2) Open the plasma torch, the plasma torch spray mouth align the wheat straw in step (1), and the current is adjusted to 180A, and the reaction is 5 min;

[0053] (3) After the reaction of step (2), the temperature of the air vacuum is kept at room temperature, takes out the crucible, and collects bio.

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Abstract

The invention provides a method for preparing biochar by using thermal plasma and application. The biochar is provided, the specific surface area of the biochar is 240-270 m<2> / g, the pore volume is 0.10-0.15 cm<3> / g, the pore diameter is 1.7-2.1 nm, and the biochar is prepared by directly treating a biomass raw material by using the thermal plasma. The invention also provides a method for preparing biochar by using the thermal plasma. The method comprises the following steps: collecting biomass raw materials; and treating the biomass raw material under the nitrogen condition by utilizing the thermal plasma to prepare the biochar. The biochar prepared by the method has a remarkable formaldehyde removal effect.

Description

Technical field [0001] The invention belongs to the field of biocarbon preparation, and more particularly to a method and application of a biocataher having a hot plasma. Background technique [0002] Biochacoal is a solid product obtained by thermochemistry under hypoxia conditions. It has large porosity and specific surface area, strong adsorption, antioxidant and antibiotic decomposition capability, in soil improvement, carbon-based fertilizer, carbon emission reduction, water pollution and air pollution control, catalyst carrier, energy storage, The field of electrode materials has a huge application prospect, which has become a research hotspot in plant biomass-material cross discipline. Biomass represented by crop straw has the advantages of rich resources, regeneration, and environmentally friendly, is an ideal raw material for synthetic biocompanies. [0003] Bio-carbon preparation methods include pyrolysis, hydrothermal carbonization, gasification, inert gas carbonizatio...

Claims

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Application Information

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IPC IPC(8): C10B53/02
CPCC10B53/02Y02E50/10
Inventor 夏涛卢宪芹张雨晴刘玮王守国
Owner QILU UNIV OF TECH