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Method for producing activated carbon using hickory shells as raw material

A technology for producing activated carbon and pecan shells, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of high corrosion of equipment, high cost, environmental pollution, etc., and achieve the effect of increasing specific surface area and increasing particle strength.

Inactive Publication Date: 2017-01-04
旌德县龙强净化材料厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical activation method is to add chemicals to the raw materials, and then heat them in an inert gas medium to activate them; the most representative chemical activation methods are zinc chloride method, phosphate method, calcium chloride method and alkali method; but due to The use of chemicals will bring the following problems: highly corrosive to equipment; pollute the environment; chemicals remain in the activated carbon; a large amount of chemicals are consumed and the cost is high; an external heat source is required and the activation temperature is strictly controlled
At present, the raw materials for preparing activated carbon are mainly wood and high-quality coal, etc., and the production cost is relatively high; therefore, in recent years, special attention has been paid to the use of various industrial and agricultural wastes to prepare high-adsorption activated carbon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 Preparation of modified dolomite

[0035] Calcinate 135g of dolomite powder and 38g of sepiolite powder at 515°C for 6 hours, then soak in 12% hydrochloric acid solution for 3 hours, then wash with deionized water until neutral, and dry;

[0036] Then add 1.5g of sodium gluconate, 3g of potassium dihydrogen phosphate, 4g of tetrasodium ethylenediaminetetraacetic acid, 2.9g of polyethylene glycol cetyl ether, and 0.8g of cinnamon oil, stir at high speed, dry, and pulverize into super Fine powder is fine.

Embodiment 2

[0038] A kind of method that takes hickory nut shell as raw material to produce gac, comprises the following steps:

[0039] a. Raw material selection: hickory nut shell, plant straw, bamboo, pine bark; the mass ratio of the above raw materials is 9:2:1.2:0.6;

[0040] b. After the above-mentioned raw materials are dried, the water content is controlled at 20%, and they are sent to the chopping device, chopped into short pieces with a length of 0.5 cm, and the scraps are transported to the feed bin of the molding device through a belt conveyor; the feeding is controlled speed, so that the crushed material is extruded into a block; the block material is transported to the carbonization furnace silo by the belt conveyor; the formed block material enters the carbonization furnace intermittently, and the acid source, gas source and inorganic silicon are added to the carbonization furnace and the temperature is 330 ° C. Carbonize for 6 hours to form a carbon block;

[0041] c. Aft...

Embodiment 3

[0052] A kind of method that is raw material production gac with pecan shell, comprises the following steps:

[0053] a. Raw material selection: hickory nut shell, plant straw, bamboo, pine bark; the mass ratio of the above raw materials is 9:2:1.2:0.6;

[0054] b. After the above-mentioned raw materials are dried, the moisture is controlled at 22%, and sent to the chopping device, which is chopped into short pieces with a length of 0.3 cm, and the scrap is transported to the feed bin of the forming device through a belt conveyor; the feed is controlled speed, so that the crushed material is extruded into a block; the block material is transported to the carbonization furnace silo by the belt conveyor; the formed block material enters the carbonization furnace intermittently, and the acid source, gas source and inorganic silicon are added to the carbonization furnace and the temperature is 320 ° C. Carbonize for 5 hours to form a carbon block;

[0055] c. After the carbon blo...

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PUM

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Abstract

The invention discloses a method for producing activated carbon using hickory shells as raw material. The method comprises the steps of raw material selecting, drying, shredding, extruding to form blocks, forming carbon in a carbonization furnace, crushing into granules, activating to forma rough product of activated carbon, acid pickling, water washing, drying and mixing; according to the method disclosed by the invention, an acid source generates metaphosphoric acid or poly metaphosphoric acid when heated, so that the carbon yield of the organic matter Chinese chestnut shells is increased; the volume of the carbon is increased byusing an air source so as to increase the specific surface area of the activated carbon; the particle strength of expanded carbon is increased by inorganic silicon; nano zinc oxide has the characteristics of large specific surface area and specific surface energy, so that the adsorbability and the antibacterial property of the material can be increased; and self-researched modified dolomite is added to further reinforce the adsorption capacity of the produced activated carbon.

Description

technical field [0001] The invention relates to a method for producing activated carbon by using hickory nut shells as raw materials. Background technique [0002] Activated carbon is a kind of porous carbon material, which has the advantages of large specific surface area, wide source of raw materials, high mechanical strength, easy regeneration and good stability. Activated carbon is usually obtained by carbonizing and activating raw materials under certain conditions. The main purpose of carbonization is to obtain a carbonized material with initial pores suitable for activation and a certain mechanical strength. The essence of carbonization is that the organic matter in the raw material undergoes pyrolysis reactions, including thermal decomposition reactions and polycondensation reactions. The main purpose of activation is to prepare activated carbon with high specific surface area; activation methods are usually divided into physical activation method and chemical activ...

Claims

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Application Information

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IPC IPC(8): C01B31/10B01J20/20B01J20/30
CPCB01J20/20B01J20/30C01P2004/80
Inventor 强昌余
Owner 旌德县龙强净化材料厂
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