Process for producing active carbon by cyclic utilization of high temperature flue gas

A technology for producing activated carbon and high-temperature flue gas, applied in inorganic chemistry, non-metallic elements, carbon compounds, etc., can solve problems such as environmental pollution and resource waste, and achieve the effect of reducing production costs, avoiding pollution, and avoiding energy waste

Inactive Publication Date: 2013-07-31
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process, due to the need to burn a large amount of raw coal, a large amount of harmful gases and dust such as sulfur dioxide and nitrogen oxides are emitted, causing serious environmental pollution and a serious waste of resources.

Method used

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  • Process for producing active carbon by cyclic utilization of high temperature flue gas

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specific Embodiment approach 1

[0027] Implement a kind of technique that recycles high-temperature flue gas to produce gac provided by the present invention, and its described process is as follows:

[0028] First of all, anthracite or bituminous coal is passed through the extrusion molding equipment to form the coal material, and the feeding equipment is fed into the drying chamber 2 through the inlet 1 on the top of the carbonization activation furnace, and the forming material is passed through the carbonization activation furnace. The hot air is used for drying, the drying temperature is 100°C-120°C, the drying time is 30-60 minutes, and it descends slowly.

[0029] Secondly, a carbonization chamber 3 and a pure oxygen burner 7 with a "Y" structure are provided in the middle of the carbonization activation furnace. 4 、H 2 The mixed gas and oxygen with CO are passed into the pure oxygen burner 7 of "Y" structure according to the volume ratio of 1~2:1 for combustion. Carry out carbonization reaction at ...

specific Embodiment approach 2

[0035] The industrial analysis of the molding material used in the present invention is as follows:

[0036] Moisture Ash Volatile matter Fixed carbon M ad A ad V ad FC ad 2.44 3.83 9.62 84.11

[0037] After the above-mentioned molding material is transported to the feed port 1 on the top of the furnace by the conveying device, it slowly descends along the product channel to the drying chamber 2 by gravity, and the molding material is dried at a controlled temperature of 100~120°C. After drying, the molding The material goes down to the carbonization chamber 3, and the pure oxygen burner 7 in the carbonization chamber 3 passes into the high-temperature mixed gas and oxygen in the gas cabinet 10, and is ignited by the ignition device, and the high-temperature mixed gas is burned in the pure oxygen burner 7, and the adjustment The flow of high-temperature water vapor and carbon dioxide enters the lower "horn" type gas distributo...

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Abstract

The invention relates to a process for producing active carbon by cyclic utilization of high temperature flue gas. The process comprises that: high temperature mixing gas of a thermal insulation gas cabinet is introduced into a pure oxygen burner arranged in a carbonization activation furnace; a carbonization reaction is performed by controlling a temperature; the generated high temperature steam, the generated carbon dioxide, and a downflow carbonization material are subjected to an activation reaction through a downstream gas distributor, and active carbon after the activation reaction enters a cooling chamber, and then is discharged; high temperature flue gas discharged from a carbonization chamber and an activation chamber enters the pure oxygen burner again to be burned; and the generated high temperature steam and the generated carbon dioxide are adopted as mixing activation gas, the mixing activation gas and the downflow carbonization material are subjected to the activation reaction through the downstream gas distributor again, and the process is cyclically and continuously performed to prepare the active carbon. According to the process, the high temperature flue gas produced through carbonization and activation is adopted to cyclically produce the active carbon so as to save steam energy source, reduce cost, achieve continuous production, and effectively avoid environment pollution.

Description

technical field [0001] The invention relates to a method for producing activated carbon, in particular to a process for producing activated carbon while recycling high-temperature flue gas for carbonization and activation. Background technique [0002] Compared with wood and shell activated carbon, coal-based activated carbon is cheap, easy to regenerate, wear-resistant, and has low fluid resistance. Because activated carbon can be applied to air purification, microcrystalline industry, water treatment, solvent recovery and medicine and other fields. Therefore, in recent years, the demand for coal-based activated carbon in the domestic and foreign markets has been increasing year by year, and there is a large supply gap for high-quality products, especially in water treatment and environmental protection. The prospects are very broad. [0003] The main processes of traditional production of coal-based activated carbon are: raw material preparation process, extrusion molding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/10C01B32/336
CPCY02P20/129
Inventor 张永发郭彦江武云霞张国杰范成旭
Owner TAIYUAN UNIV OF TECH
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