Method for preparing coal-based carbonized material used for preparing active carbon

A technology for preparing activated carbon and carbonization materials, which is applied in the field of coal chemical industry, can solve problems such as abnormal operation, and achieve the effect of improving oxidation efficiency, increasing calorific value, and continuous discharge

Active Publication Date: 2010-08-25
西安三瑞实业有限公司
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However, due to various reasons, it has not been able to function normally

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  • Method for preparing coal-based carbonized material used for preparing active carbon

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Embodiment 1

[0021] Fully oxidize 100kg of coal-based briquette molding material (amorphous granular) with a particle size of 0.60-3.35mm, moisture content ≤ 2%, and volatile content: 30%-40% in an oxidation furnace at 200°C Hour. The coal-based oxidizing material is discharged from the discharge box at the tail of the oxidation furnace into the conveying device and sent to the rotary carbonization furnace. It is carbonized in the carbonization furnace with gradually increasing temperature for 2 hours. The temperature of each section of the carbonization furnace is: 270°C, 330°C, 390°C , 450°C, 510°C and 570°C, the pressure value is controlled at 10mm H 2 O. The produced coal-based carbonized material is sent to the cooling furnace for cooling under the condition of isolating the air, and the cooling furnace adopts the form of circulating water spray cooling. The generated carbonized tail gas is separated and purified to obtain tar and coal gas. After calculation and analysis, the parti...

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Abstract

The invention provides a method for preparing coal-based carbonized material used for preparing active carbon, which comprises: making raw coal into coal-based briquetted material (amorphous grains); delivering the coal-based briquetted material into an externally heated rotary oxidation furnace to perform the forced oxidization reaction of the coal-based briquetted material and hot air, which iscontinuously and quantitatively added into the barrel of the oxidization furnace, at 150 to 280 DEG C; delivering the oxidized coal-based briquetted oxide material into an externally heated carbonizing furnace; and making the coal-based carbonized material by performing heat treatment and reactions such as destructive distillation, thermal cracking and polycondensation under certain conditions atdifferent temperature stages. The coal-based carbonized material produced by the cracking in the carbonizing furnace is delivered by a delivering device to a follow-up step for cooling. The tail gas of the carbonizing furnace, which is high in calorific value, is separated and purified to be supplied to the oxidization furnace and the carbonizing furnace as a heat source to be recycled. The technical process of the method is simple and free from waste gas, water and slag discharge. The method belongs to an environmental protection and comprehensive utilization project.

Description

technical field [0001] The invention relates to a process for preparing coal-based carbonized material for active carbon. It belongs to the technical field of coal chemical industry. Background technique [0002] Coal-based activated carbon is a carbonaceous adsorption material. It has good chemical stability and thermal stability, can resist acid and alkali corrosion, is insoluble in water and organic solvents, can withstand water immersion, high temperature and high pressure, and can be regenerated after failure; it is widely used in gas adsorption, separation, purification and Body purification etc. [0003] At present, activated carbon for industrial applications includes granular activated carbon, powdered activated carbon, shaped activated carbon and activated carbon carbon fiber. Activated carbon is mainly used in water treatment, chemical pharmaceuticals, mining, gas purification, food processing, sugar production, decolorization and gas solvent recovery. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/08C10B57/08C10L5/06C10L5/04
Inventor 何建祥魏超
Owner 西安三瑞实业有限公司
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