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Method for comprehensively utilizing ginger straw

A technology of ginger straw and straw, which is applied in the direction of chemical instruments and methods, carbon compounds, carbon preparation/purification, etc., can solve the problems of complex steps of porous activated carbon, large amount of chemical reagents, etc., achieve high utilization value and improve electrochemical performance , easy to realize the effect of industrialization

Active Publication Date: 2019-09-06
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, in the process of using plant straws to prepare porous activated carbon, it is necessary to add active agents, which makes the steps of preparing porous activated carbon from plant straws complicated and requires a large amount of chemical reagents.

Method used

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  • Method for comprehensively utilizing ginger straw
  • Method for comprehensively utilizing ginger straw
  • Method for comprehensively utilizing ginger straw

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preparation example Construction

[0061] The preparation method of the above-mentioned porous carbon electrode is also within the protection scope of the present disclosure. The mixing method of waste ginger straw-based porous carbon, binder and conductive agent uses the current common method: including preparing the mixed slurry of ginger straw-based porous carbon, binder and conductive additive through pulping and spreading the slurry evenly on the The method on the current collector and the method of heating and pressing the uniformly mixed ginger straw-based porous carbon, binder and conductive additive mixed active material.

[0062] The current collector used in the present disclosure includes copper foil, aluminum foil, nickel mesh, stainless steel foil, etc. that have been widely used at present.

[0063] The fifth embodiment of the present disclosure is a method for comprehensively utilizing ginger straw, including the above-mentioned preparation method of ginger straw-based porous carbon, after the p...

Embodiment 1

[0070] A comprehensive utilization and preparation method of ginger straw, comprising the following steps:

[0071] Step 1, ginger stalk raw material (such as figure 2 Shown) rinse with clean water to remove impurities such as soil, then cut into 3cm-long segments, then squeeze with a juicer, and collect the squeezed juice and slag separately.

[0072] Step 2: filter the ginger straw juice obtained in step 1 with qualitative filter paper, remove the insoluble particles therein to obtain a transparent liquid, then let it stand until obvious layers are separated, and then remove the water layer to separate the upper oil layer to obtain ginger straw crude oil.

[0073] Step 3, drying the obtained ginger straw residue at 105° C. for 24 hours, crushing, and passing through an 80-mesh sieve. Then place it in a tube furnace for carbonization at 700°C for 2h, the protective gas is nitrogen, and the flow rate is 1L / min. The heating rate was 5°C / min.

[0074] Step 4, place the produ...

Embodiment 2

[0077] A comprehensive utilization and preparation method of ginger straw, comprising the following steps:

[0078] Step 1: Rinse the raw material of ginger stalks with clean water to remove impurities such as soil, then cut them into 2cm-long sections, then press them with a juice extractor, and collect the juice and slag obtained from the pressing.

[0079] Step 2: filter the ginger straw juice obtained in step 1 with qualitative filter paper, remove the insoluble particles therein to obtain a transparent liquid, then let it stand until obvious layers are separated, and then remove the water layer to separate the upper oil layer to obtain ginger straw crude oil.

[0080] Step 3, drying the obtained ginger straw residue at 105° C. for 24 hours, crushing, and passing through a 120-mesh sieve. Then place it in a tube furnace for carbonization at 500°C for 2h, the protective gas is nitrogen, and the flow rate is 1.5L / min. The heating rate is 10°C / min.

[0081] Step 4: Place th...

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Abstract

The present invention provides a method for comprehensively utilizing ginger straw. The method comprises: washing ginger straw, pressing, and separately collecting the juice and the residue after thepressing treatment; separating the oil from the obtained ginger straw juice through standing or by using a centrifuge to obtain a ginger straw crude oil; drying the obtained ginger straw residue, placing in a closed furnace hearth, introducing a protective gas, and heating to carbonize so as to obtain ginger straw charcoal; and carrying out acid washing on the obtained ginger straw charcoal, carrying out water washing to achieve a neutral state, and drying to obtain the ginger straw-based porous carbon, wherein the temperatures of the acid washing and the water washing respectively are 70-90 DEG C. According to the present invention, with the method, the high value utilization of ginger straw waste is achieved, the preparation process is simple, the chemical reagent consumption is less, and the waste utilization rate is high.

Description

technical field [0001] The disclosure belongs to the field of comprehensive utilization of agricultural and forestry waste, and specifically relates to the extraction and preparation of a natural product, a preparation method of a porous carbon material with high mass specific capacitance, excellent cycle performance, and rate performance, and a supercapacitor electrode. aspects of application. Background technique [0002] The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] At present, resource shortage and environmental problems are two major problems affecting human existence. Traditional fossil energy is gradually being replaced, while new energy and energy storage are getting more and more attention. Biomass is a renewable resource, low-carbon, and environmentally friendly, making it one of the key points of energy research today. [0004] China is the birthplace and one ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/05H01G11/24H01G11/44
CPCC01B32/05C01B32/324H01G11/24H01G11/44Y02E60/13
Inventor 韩奎华王加敏齐建荟李金晓
Owner SHANDONG UNIV
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