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Preparation method for biomass medicinal charcoal

A technology of biomass and medicinal charcoal, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of high production cost, low adsorption performance, poor applicability, etc., save log materials, and be easy to operate , Accelerate the effect of effective utilization

Inactive Publication Date: 2012-05-09
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason why biomass activated carbon cannot replace wood activated carbon for chemical decolorization and refining is that biomass activated carbon has high ash content and low adsorption performance, and cannot meet the technical index requirements for chemical decolorization and refining. How to reduce the ash content of biomass activated carbon and improving its adsorption performance are the difficulties in the current research and development of biomass activated carbon
To sum up, the existing biomass activated carbon production technology is not mature enough, the production process is complicated, the production cost is high, the product quality is not good, the applicability is poor, and the decolorization effect is not good, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The preparation method of the biomass medicinal activated carbon involved in the present embodiment is carried out in the following steps:

[0017] (1) walnut shell crushing: the walnut shell is crushed through a 20-200 mesh sieve;

[0018] (2) Walnut shell screening and impurity removal: the walnut shell powder after step (1) is pulverized with double-layer sieve for impurity removal;

[0019] (3) pickling, alkali washing: the walnut shell powder after the impurity removal through step (2) is that the acid solution of 15% is carried out pickling with the mass percent concentration, after washing with water to neutrality then, then use the mass percent concentration of Alkaline washing with 15% lye, then rinsing with water until neutral, the washing temperature is 80-100°C, and the washing time is 240 minutes;

[0020] (4) Drying: first rinse the walnut shell powder washed in step (3) and then dry it at 100°C;

[0021] (5) Carbonization: send the walnut shell powder d...

Embodiment 2

[0024] The preparation method of the biomass medicinal activated carbon involved in the present embodiment is carried out in the following steps:

[0025] (1) crushing of peanut shells: crushing the peanut shells through a 120-200 mesh sieve;

[0026] (2) Peanut shell screening to remove impurities: the peanut shell powder pulverized in step (1) is removed with double-layer sieves;

[0027] (3) pickling, alkali washing: the peanut shell powder after step (2) removes impurity is carried out pickling with the acid solution of 10% mass percent concentration, after washing with water to neutrality then, then use mass percent concentration of 10% lye for alkaline washing, then rinse with water until neutral, the washing temperature is 100°C, and the washing time is 120 minutes;

[0028] (4) Drying: Rinse the peanut shell powder washed in step (3), and then dry it at 110°C;

[0029] (5) Carbonization: send the peanut shell powder dried in step (4) into the activation furnace, and ...

Embodiment 3

[0032] The preparation of the biomedical activated carbon involved in the present embodiment is carried out in the following steps:

[0033] (1) Corn stalk crushing: crush the corn stalk through a 80-120 mesh sieve;

[0034] (2) Screening and removing impurities from corn stalks: using double-layer sieves to remove impurities from the corn stalk powder pulverized in step (1);

[0035] (3) Pickling, alkali washing: pickling the corn stalk powder after the impurity removal in step (2) with a mass percent concentration of 5% acid solution, then washing with water to neutrality, then using a mass percent concentration of 5% 5% lye for alkaline washing, then rinse with water until neutral, the washing temperature is 90°C, and the washing time is 20 minutes;

[0036] (4) Drying: Rinse the corn stalk powder washed in step (3), and then dry at 120°C;

[0037] (5) Carbonization: send the corn stalk powder dried in step (4) into the activation furnace, heat up to 450°C under the prote...

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Abstract

The invention discloses a preparation method for biomass medicinal charcoal, which belongs to the technical field of processing and preparation of activated charcoal, and aims to reduce ash content in activated charcoal and to improve adsorption performance of the activated charcoal. The method comprises the following steps: crushing biomass and screening the biomass with a 20 to 200 mesh sieve; carrying out pickling and alkali washing on the biomass after screening and removal of impurities; drying the biomass; sending the raw material of the treated biomass to an activation furnace, heating the raw material to a temperature of 300 to 600 DEG C under the protection of nitrogen and carrying out carbonization for 30 to 240 minutes; allowing carbon dioxide to enter into the activation furnace at a temperature of 800 to 1000 DEG C, carrying out carbonization for 30 to 360 minutes, with gas flow being 10 to 300 L / h, and after carbonization, cooling the biomass to room temperature so as to obtain the biomass medicinal charcoal. Ash content, decolouring capacity and adsorption quantity of the prepared biomass medicinal charcoal are all superior to those of wooden activated charcoal; the biomass medicinal charcoal has the advantages of a simple operation process, low cost, suitability for large scale production and strong market competitiveness.

Description

Technical field: [0001] The invention belongs to the technical field of biomass medicinal charcoal production, and relates to a method for preparing activated carbon used for medicine decolorization and refining, in particular to a method for preparing biomass medicinal charcoal by pretreatment. Background technique: [0002] At present, wood activated carbon is generally used for decolorization and refining of traditional Chinese medicines. In recent years, with the improvement of people's awareness of environmental protection, and the country has issued corresponding natural forest and wood protection policies, the supply of raw materials for wood activated carbon manufacturers is scarce. Wood activated carbon The supply is increasingly insufficient, and the price remains high; most of the existing activated carbon manufacturers and research institutions are devoting themselves to the development of cheap and easy-to-obtain activated carbon for the decolorization and refini...

Claims

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Application Information

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IPC IPC(8): C01B31/10C01B32/336
Inventor 郭庆杰付国家郭拓刘新民田红景王许云
Owner QINGDAO UNIV OF SCI & TECH
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