Preparation method of biochar-based composite material

A technology of composite materials and biochar, applied in carbon preparation/purification, chemical instruments and methods, silicon compounds, etc., can solve problems such as weak adsorption capacity

Inactive Publication Date: 2018-07-17
DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adsorption capacity of simple biochar materials is weak, and it needs to be compounded with other materials. The comprehensive performance of the compounded materials is better than that of the original constituent materials, which can meet various requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of a biochar-based composite material, comprising the following steps:

[0025] (1) Dry and clean the orange peel, crush it to obtain orange peel powder; mix the obtained orange peel powder with a urea solution with a mass concentration of 13 wt%, stir at 1500rpm, 30°C for 10h, and then - Freeze-dry at 50°C for 10 hours to obtain pretreated orange peel powder; wherein, the dosage ratio of orange peel powder and urea solution is 0.3g:3mL; the temperature of calcination treatment is 450°C, the time is 3h, and the flow rate of inert gas is 100 -200sccm;

[0026] (2) After mixing the above-mentioned pretreated orange peel powder and rectorite powder, they are placed in an inert gas atmosphere and calcined to obtain a mixed powder; wherein, the mass of the pretreated orange peel powder and rectorite powder The ratio is 1:1;

[0027] (3) Place the mixed powder prepared above under a nitrogen-containing atmosphere, perform ball milling, and then pass thr...

Embodiment 2

[0029] A preparation method of a biochar-based composite material, comprising the following steps:

[0030] (1) Dry and wash the orange peels, grind them to obtain orange peel powder; mix the obtained orange peel powder with a urea solution with a mass concentration of 22 wt%, stir at 3500rpm, 30°C for 15h, and then - Freeze-dry at 50°C for 20 hours to obtain pretreated orange peel powder; wherein, the ratio of orange peel powder to urea solution is 1g:3mL; the temperature of calcination treatment is 800°C, the time is 7h, and the flow rate of inert gas is 100- 200 sccm;

[0031] (2) After mixing the above-mentioned pretreated orange peel powder and rectorite powder, they are placed in an inert gas atmosphere and calcined to obtain a mixed powder; wherein, the mass of the pretreated orange peel powder and rectorite powder The ratio is 1:3;

[0032] (3) Place the mixed powder prepared above under a nitrogen-containing atmosphere, perform ball milling, and then pass through a ...

Embodiment 3

[0034] A preparation method of a biochar-based composite material, comprising the following steps:

[0035] (1) Dry and clean the orange peel, crush it to obtain orange peel powder; mix the prepared orange peel powder with a urea solution with a mass concentration of 15 wt%, stir at 2000rpm, 30°C for 11h, and then - Freeze-dry at 50°C for 12 hours to obtain pretreated orange peel powder; wherein, the dosage ratio of orange peel powder and urea solution is 0.4g:3mL; the temperature of calcination treatment is 500°C, the time is 4h, and the flow rate of inert gas is 100 -200sccm;

[0036] (2) After mixing the above-mentioned pretreated orange peel powder and rectorite powder, they are placed in an inert gas atmosphere and calcined to obtain a mixed powder; wherein, the mass of the pretreated orange peel powder and rectorite powder The ratio is 1:1.5;

[0037] (3) Place the mixed powder prepared above under a nitrogen-containing atmosphere, perform ball milling, and then pass t...

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PUM

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Abstract

The invention discloses a preparation method of a biochar-based composite material, and the preparation method comprises the following steps: firstly mixing, stirring and lyophilizing self-made orangepeel powder and a urea solution to prepare pretreated orange peel powder; mixing the pretreated orange peel powder and rectorite powder to put into an inert gas for calcination treatment, and performing ball-milling and sieving in a nitrogen-containing atmosphere, pickling, washing, filtering and drying to obtain the biochar-based composite material. The biochar-based composite material has goodstability, large adsorption capacity, strong adsorption capacity, simple preparation method and low preparation cost.

Description

Technical field: [0001] The invention relates to the field of preparation of composite materials, in particular to a preparation method of biochar-based composite materials. Background technique: [0002] Biochar generally refers to a solid biofuel with high carbon content and a large specific surface area produced by pyrolysis of biomass raw materials at a certain temperature (<700°C) under anaerobic or anoxic conditions, also known as biochar. Substance charcoal. Common biochars include charcoal, rice husk charcoal, straw charcoal and bamboo charcoal. They are mainly composed of aromatic hydrocarbons and simple carbon or carbon with graphite structure. In addition to C elements, they also include H, O, N, S and a small amount of trace elements. Although the properties of biochar are greatly affected by the preparation conditions, in general, biochar has a large specific surface area, small bulk density, high stability, and strong adsorption capacity, and is widely use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05C01B33/40B01J20/20B01J20/12
CPCC01B33/40B01J20/12B01J20/20
Inventor 陈东进
Owner DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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