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A kind of fibrous biochar and its preparation method and application

A biochar and fibrous technology, applied in the field of environmental engineering, can solve problems such as resource waste and environmental pollution, achieve high iodine adsorption value, simplify the process flow, and realize the effect of resource utilization

Inactive Publication Date: 2018-02-09
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If these scraps or waste clothes are discarded directly, it will not only cause environmental pollution, but also cause a waste of resources.

Method used

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  • A kind of fibrous biochar and its preparation method and application
  • A kind of fibrous biochar and its preparation method and application
  • A kind of fibrous biochar and its preparation method and application

Examples

Experimental program
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Effect test

preparation example Construction

[0030]

[0031] A preparation method for fibrous biochar, comprising the steps of:

[0032] (1), preprocessing steps:

[0033] Soak the textile in the treatment agent at 80±10°C and keep stirring, squeeze out the water after 30±10min, and then dry it with hot air at 60±10°C to obtain the treated product.

[0034] Wherein, the treating agent is a mixture of nitrate and phosphate in a molar ratio of 1:(1-3).

[0035] The molar concentration of the nitrate solution can be 0.2-0.8mol / L, and the molar concentration of the phosphate solution can be 0.1-0.4mol / L.

[0036] The nitrate contained in the nitrate solution may be sodium nitrate or potassium nitrate, and the phosphate contained in the phosphate solution may be sodium phosphate or potassium phosphate.

[0037] The present invention adopts the treating agent that contains phosphate and nitrate simultaneously to carry out pretreatment to textile, and its reason is as follows:

[0038] First, phosphate contains phosphorus,...

Embodiment 1

[0070] The present embodiment provides a kind of preparation method of fibrous biochar, it comprises the steps:

[0071] (1) immerse 4.6853g of textiles in a treatment agent at 80°C and stir continuously, squeeze out the water after 30 minutes, and then dry with hot air at 60°C to obtain the treated product;

[0072] (2), pulverize the processed product obtained in step (1) into a powder with a particle size of ≤20 mesh, and continue to carry out hot air drying at 60°C until the moisture content of the powder is ≤10%; if the moisture content is ≤10% , it is not necessary to carry out hot air drying;

[0073] (3), the powder obtained in step (2) is heated up to 350° C. under the protection of nitrogen with a heating rate of 5° C. / min for carbonization, and the carbonization time is 1.5 hours to obtain 2.1459 g of fibrous biochar (such as figure 2 shown).

[0074] Wherein, in the step (1), the treatment agent is a mixed solution composed of a nitrate solution and a phosphate ...

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Abstract

The invention provides a preparation method of fibrous charcoal. The preparation method comprises the following steps: preprocessing textiles to obtain a processed object, crushing the processed object to obtain powder, and charring the powder to obtain the fibrous charcoal. The preparation method adopting waste textiles as a raw material is in favor of realizing recycling of wastes; and the preparation method improves the yield of the fibrous charcoal through preprocessing the textiles with a processing agent and adjusting the heating rate and the charring temperature in order to obtain the fibrous charcoal with high carbon content and large iodine adsorption value.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering and relates to a fibrous biochar and its preparation method and application. Background technique [0002] People's clothes are mostly made of textiles. On the one hand, the textile factories that produce these clothes will produce a large amount of leftover materials every year; on the other hand, with the acceleration of people's clothing renewal, a large amount of waste and old clothes will also be produced. If these scraps or waste clothes are discarded directly, it will not only cause environmental pollution, but also cause waste of resources. Therefore, how to recycle leftover materials or waste clothes has become an urgent problem to be solved. Contents of the invention [0003] The main purpose of the present invention is to provide a method for preparing fibrous biochar, which can not only recycle waste textiles, but also obtain fibrous biochar with a higher yield. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/16C01B32/05B01J20/20B01D53/02C02F1/28
CPCB01D53/02B01J20/20C01P2004/03C01P2004/61C02F1/283D01F9/16
Inventor 谢伟雪赵由才刘孝敏李杭芬曾超罗安然周涛牛冬杰柴晓利
Owner TONGJI UNIV
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