Process for obtaining activated carbon by physical activation method

A technology of physical activation and activated carbon, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of low activation temperature, short activation time, environmental hazards of waste water and waste gas, etc., achieve simple synthesis process, improve preparation efficiency, The effect of low process cost

Inactive Publication Date: 2020-02-21
深圳市起源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Chemical activation is the introduction of chemical drug activation into the production process of granular carbon. A series of crosslinking or polycondensation reactions between chemical reagents and carbon materials to create rich micropores is a common method for producing activated carbon by chemical methods. The advantage of chemical activation is that the activation time is short and the activation temperature is low. However, the use of a large number of chemical reagents increases the cost of preparation, and it has a strong corrosion effect on equipment at high temperatures. A large amount of water is required in the washing process. These wastewater can only be processed after complex treatment processes. Meet environmental protection emission requirements, and the consumption of activator is large, the recovery rate is low, and the waste water and waste gas produced are harmful to the environment

Method used

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  • Process for obtaining activated carbon by physical activation method
  • Process for obtaining activated carbon by physical activation method
  • Process for obtaining activated carbon by physical activation method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] combine figure 1 , a kind of technique that physical activation method obtains activated carbon, comprises the steps:

[0037] S1, crushing: the wood is torn and crushed into sawdust by the crusher 1;

[0038] S2. Drying: The crushed sawdust is sent to the drying furnace 3 through the conveyor 2, the drying temperature is 200°C-250°C, the drying time is 15-30min, and the moisture content of the dried sawdust is 15-20 %;

[0039] S3. Carbonization: Send the dried sawdust into the carbonization device 4, and heat the carbonization device 4 through the combustion system 5. The temperature of the carbonization device 4 is 560°C to 750°C, and the carbonization time is 20 to 30 minutes to form charcoal;

[0040] S4. Charcoal production: the charcoal is cooled, and the water-cooled spiral is used for four-stage cooling, and the charcoal is pulverized into charcoal powder after sufficient cooling;

[0041] S5. Preparation of activated carbon: put the carbon powder in the phy...

Embodiment 2

[0043] combine figure 2 and image 3 , a system for preparing activated carbon, comprising a pulverizer 1, a conveyor belt 2, a drying furnace 3, a carbonization device 4, a combustion device 5 and a physical activation device 6, the pulverizer 1, a conveyor belt 2, a drying furnace 3, The carbonization device 4 is connected with the physical activation device 6 in turn, and the combustion device 5 is connected with the drying furnace 3, the carbonization device 4 and the physical activation device 6, and the carbonization device 4 is sent into the carbon powder in the physical activation device 6, and the combustion The system 5 delivers water vapor into the physical activation device 6 .

[0044] The carbonization device 4 includes a carbonization furnace 41 and an insulating brick wall 42 wrapped outside the carbonization furnace 41 , and there is a cavity 43 between the carbonization furnace 41 and the insulating brick wall.

[0045] The combustion system 5 includes a c...

Embodiment 3

[0049] Such as Figure 4As shown, in combination with step S1, crushing: the wood is torn and crushed into sawdust by the shredder 1, and the wood is transported from the raw material storage area to the twin-shaft shredder 101, the twin-shaft shredder 102 and the pair of rollers respectively through belt transport. The pulverizer 103 pulverizes, and the pulverized sawdust is stored in the pulverized storage area for storage.

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Abstract

The invention relates to a process for obtaining activated carbon by a physical activation method. The process comprises the following steps: S1, crushing, namely tearing and crushing wood into sawdust by a crusher; s2, drying, namely conveying smashed wood chips into a drying oven through a conveyor to be dried; s3, carbonizing, namely feeding dried sawdust into a carbonizing device through a spiral conveyor, and carrying out heat conduction heating on the carbonizing device through a combustion system to form carbon; s4, discharging carbon, namely cooling the formed carbon, and fully coolingto obtain matrix carbon; and S5, preparing the activated carbon, namely putting the matrix carbon into a physical activation device, conveying water vapor into the physical activation device, enabling the matrix carbon to be in direct contact with the water vapor, and enabling the water vapor to destroy the cell structure of the matrix carbon to allow the matrix carbon to form countless nanoscalepore structures, thereby obtaining the activated carbon.

Description

technical field [0001] The invention belongs to the technical field of activated carbon preparation, and in particular relates to a process for obtaining activated carbon by a physical activation method. Background technique [0002] Activated carbon has the advantages of good chemical stability and large specific surface area, and has a wide range of applications in the fields of adsorption, separation, and catalysis. Its preparation is mainly through charcoal, wood chips, coconut shells, fruit cores, polymers, coal, and heavy petroleum. It is prepared by carbonization activation, and the activation process has an important impact on the pore structure of activated carbon, and ultimately determines the performance of the material in the target application field. [0003] Chemical activation is the introduction of chemical drug activation into the production process of granular carbon. A series of crosslinking or polycondensation reactions between chemical reagents and carbo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/336
CPCC01B32/324C01B32/336
Inventor 刘福彬李鹏鹏姜文军周建斌
Owner 深圳市起源环保科技有限公司
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