Desulfurization activated coke and method for preparing same

A technology for desulfurization of active coke and coal tar, applied in chemical instruments and methods, other chemical processes, inorganic chemistry, etc., can solve problems such as production reduction, and achieve the effects of simple process, low price and good product performance

Active Publication Date: 2012-10-24
DATONG COAL MINE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, domestic high-quality anthracite resources are limited, and due to disorderly development, production has been reduced year by year

Method used

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  • Desulfurization activated coke and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0023] Raw material composition and ratio: Bituminous coal A60% (mass percentage), bituminous coal B 10% (mass percentage), coal tar 30% (mass percentage);

[0024] Preparation method: (1) Grinding: Crushing the raw materials of bituminous coal A and bituminous coal B to a particle size of 250 meshes; (2) Forming: uniformly mixing the pulverized raw materials of bituminous coal A and bituminous coal B with coal tar in proportion, and mixing them at 1000kgf / Extruded into carbon strips under a pressure of cm2 and air-dried for aging; (3) Carbonization: Carbonize the aged carbon strips to generate carbonized materials. The final carbonization temperature is 600°C, the carbonization time is 50min, and the heating rate is 2min / °C; ( 4) Activation: The carbonized material is activated by passing water vapor, the activation temperature is 800°C, and the activation time is 30 minutes to obtain an activated coke product with a particle size of 9mm.

Embodiment ２

[0026] Raw material composition and ratio: Bituminous coal A52% (mass percentage), bituminous coal B 20% (mass percentage), coal tar 28% (mass percentage);

[0027] Preparation method: (1) Grinding: Crushing the raw materials of bituminous coal A and bituminous coal B to a particle size of 300 meshes; (2) Forming: uniformly mixing the pulverized raw materials of bituminous coal A and bituminous coal B with coal tar in proportion, and mixing them at 900kgf / Extruded into carbon strips under a pressure of cm2 and air-dried for aging; (3) Carbonization: Carbonize the aged carbon strips to generate carbonized materials. The final carbonization temperature is 500°C, the carbonization time is 80min, and the heating rate is 6min / °C; ( 4) Activation: The carbonized material is activated by passing water vapor, the activation temperature is 850°C, and the activation time is 40 minutes to obtain an activated coke product with a particle size of 9mm.

Embodiment ３

[0029] Raw material composition and ratio: bituminous coal A 40% (mass percentage), bituminous coal B 30% (mass percentage), coal tar 30% (mass percentage);

[0030] Preparation method: (1) Grinding: Crushing the raw materials of bituminous coal A and bituminous coal B to a particle size of 180 meshes; (2) Forming: uniformly mixing the pulverized raw materials of bituminous coal A and bituminous coal B with coal tar in proportion, and mixing them at 800kgf / Extruded into carbon strips under a pressure of cm2 and air-dried for aging; (3) Carbonization: Carbonize the aged carbon strips to generate carbonized materials. The final carbonization temperature is 650°C, the carbonization time is 30min, and the heating rate is 4min / °C; ( 4) Activation: The carbonized material is activated by passing water vapor, the activation temperature is 850°C, and the activation time is 60 minutes to obtain an activated coke product with a particle size of 9mm.

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Abstract

The invention discloses desulfurization activated coke made of bituminous coal. The desulfurization activated coke is made by steps of mixing, by weight, 40-60% of bituminous coal A serving as main materials with 10-30% of bituminous coal B and 20-30% of coal tar serving as adhesive, grinding, forming, carbonizing and activating, wherein the ash content of the bituminous coal A is 4-10%, the volatile matter content of the bituminous coal A is 22-27%, the ash content of the bituminous coal B is 4-6%, and the volatile matter content of the bituminous coal B is 33-36%. The method for preparing the desulfurization activated coke includes grinding, forming, carbonizing and activating. Compared with anthracite, Datong bituminous coal which is used as feed coal has the advantages that the bituminous coal is low in cost and abundant in reserves, and the prepared flue gas desulfurization activated coke has the advantages of high adsorption capacity, high mechanical strength, high bulk density and the like and belongs to excellent flue gas desulfurization activated cokes.

Description

technical field [0001] The invention relates to flue gas desulfurization active coke and a preparation method thereof. Background technique [0002] China is the world's largest coal producer and consumer, and the massive mining and utilization of coal has brought serious environmental pollution. SO emissions from coal combustion 2 is one of the important factors causing environmental pollution, SO 2 The area covered by acid rain mainly caused by acidic gas accounts for 40% of my country's land area, causing serious harm to the ecological environment. Also SO 2 The large amount of emissions also caused a large loss of sulfur resources in my country. [0003] Activated coke flue gas desulfurization technology is an advanced dry desulfurization technology. This technology has the advantages of high desulfurization efficiency, no water consumption in the desulfurization process, no secondary pollution from waste water and residue, and the realization of sulfur resource uti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/10B01J20/20C01B32/336
Inventor 李艳芳蒋煜王鹏石兴堂吴涛常晓华傅翔方娜孙仲超陶逊陈化新兰志成
Owner DATONG COAL MINE GRP
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