Active carbon preparing method by adopting walnut shell as raw material and application of the active carbon

A technology for preparing activated carbon and walnut shells, which is applied in applications, chemical instruments and methods, and fertilizer mixtures. It can solve the problems of high soil debris and harmful substances, affecting the survival and reproduction of bacteria, and short storage time of bacterial fertilizers. , to achieve the effect of eliminating environmental pollution, low production cost, and low equipment investment

Active Publication Date: 2014-08-13
石家庄金太阳生物有机肥有限公司
View PDF4 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common carriers of microbial fertilizers include cow dung, crushed crop stalks, rice husks, etc. These carriers have short storage time for bacterial fertilizers, many bacteria, soil debris and harmful substances, which seriously affect the survival and development of bacteria. reproduce

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Active carbon preparing method by adopting walnut shell as raw material and application of the active carbon
  • Active carbon preparing method by adopting walnut shell as raw material and application of the active carbon
  • Active carbon preparing method by adopting walnut shell as raw material and application of the active carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] a) Pulverization: take 500Kg of walnut shells, wash and air-dry them, pulverize them with a pulverizer, and sieve them into irregular particles with a particle size of 1-2mm;

[0032] b) Drying: Send the walnut shell particles in step a) into the reaction furnace, turn on the vacuum equipment, control the vacuum degree in the reaction furnace at a negative pressure of 600mmHg, keep stirring the material and raise the temperature to 120°C and then dry for 1 hour. Among them, The initial heating rate is controlled at 0.5°C / min. When the temperature rises to 60°C, the heating rate is adjusted to 1°C / min. Gases such as CO, CH 4 , tar, use the vacuum pipe to lead to the burner for auxiliary heating of the reactor;

[0033] c) Carbonization: When the water content of walnut shell particles is ≤5% by sampling test, under the condition of vacuum degree of 600mmHg negative pressure, continue to heat up to 400°C and then carbonize for 4 hours, in which the heating rate is control...

Embodiment 2

[0040] a) Pulverization: take 500Kg of walnut shells, wash and air-dry them, pulverize them with a pulverizer, and sieve them into irregular particles with a particle size of 1-2mm;

[0041] b) Drying: Put the walnut shell particles in step a) into the reaction furnace, turn on the vacuum equipment, control the vacuum degree in the reaction furnace at 600mmHg negative pressure, keep stirring the material and raise the temperature to 120°C and then dry for 1.5 hours, wherein, The initial heating rate is controlled at 0.5°C / min. When the temperature rises to 60°C, the heating rate is adjusted to 1°C / min. Gases such as CO, CH 4 , The tar is led to the burner by the vacuum pipe to assist the heating of the reactor;

[0042] c) Carbonization: When the water content of walnut shell particles is ≤5% by sampling test, under the condition of vacuum degree of 600mmHg negative pressure, continue to heat up to 425°C and then carbonize for 5 hours, in which the heating rate is controlled a...

Embodiment 3

[0049] a) Pulverization: take 500Kg of walnut shells, wash and air-dry them, pulverize them with a pulverizer, and sieve them into irregular particles with a particle size of 1-2mm;

[0050] b) Drying: Send the walnut shell particles in step a) into the reaction furnace, turn on the vacuum equipment, control the vacuum degree in the reaction furnace at 600mmHg vacuum negative pressure, stir the material and heat it up to 120°C and dry it for 2 hours. Among them, The initial heating rate is controlled at 0.5°C / min. When the temperature rises to 60°C, the heating rate is adjusted to 1°C / min. Gases such as CO, CH 4 , The tar is led to the burner by the vacuum pipe to assist the heating of the reactor;

[0051] c) Carbonization: When the water content of walnut shell particles is ≤5% by sampling and testing, under the condition of vacuum degree of 600mmHg and negative pressure, continue to heat up to 450°C and then carbonize for 4 hours. The heating rate is controlled at 1°C / min. ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention relates to an active carbon preparing method by adopting walnut shell as raw material and an application of the active carbon. The walnut shell is adopted as the raw material. The active carbon is prepared by adoption of a vacuum pyrolysis method through steps of smashing, drying, charring, puffing for activation, cooling, discharging, sieving, and the like. The obtained active carbon is applied as a microbial fertilizer carrier. The preparing method and the application are advantaged by: short production period, low reaction temperature, low production cost, low energy consumption, no pollution to the environment, and capability of improving the soil granular structure, reducing soil hardening, enhancing the water retention property of the soil, playing a role of nitrogen-fixation controlled release fertilizers, and reducing the using amount of fertilizers and decomposed crop straw when the active carbon is applied as a microbial fertilizer carrier and used in the agriculture.

Description

technical field [0001] The invention relates to the field of activated carbon preparation, in particular to a method for preparing activated carbon from walnut shells and the application of the obtained activated carbon as a microbial fertilizer carrier. Background technique [0002] At present, there are many defects in the domestic activated carbon production and manufacturing process, such as high pollution, high energy consumption, and high cost, which seriously restrict the development of the activated carbon industry and the application of products. The area is wide, and if it cannot be utilized, it will not only cause waste of resources but also cause environmental pollution. Take walnuts as an example. In recent years, for the convenience of consumers, many companies have broken the shells of walnuts to take out the walnut kernels, and then fried the walnut kernels before selling them, resulting in a large number of hard walnut shells. These hard shells are hard and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/10C05G3/00C01B32/336
Inventor 刘志军王占武李明
Owner 石家庄金太阳生物有机肥有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap