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Method for high-efficiently processing asphalt fumes

A kind of asphalt fume, high-efficiency technology, applied in the direction of combustion method, lighting and heating equipment, combined combustion mitigation, etc., can solve the problems of incomplete governance, high operation cost, and no application, etc., to achieve low investment cost and low operation cost , good processing effect

Active Publication Date: 2010-07-14
YUNNAN YUANXIN CARBON CO LTD
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AI Technical Summary

Problems solved by technology

[0004] For this kind of asphalt smoke with low concentration and extremely dispersed, conventional methods such as electric tar collectors cannot completely control it.
Even if the current relatively advanced thermal storage incineration method is used for treatment, in order to achieve better results, the incineration temperature must be above 800°C. However, due to the large investment and high operating cost of this treatment technology, it is currently used in the asphalt flue gas in the domestic carbon industry. No application yet in the processing step

Method used

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  • Method for high-efficiently processing asphalt fumes
  • Method for high-efficiently processing asphalt fumes

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Embodiment Construction

[0017] First collect the asphalt flue gas produced by the asphalt melting process, asphalt storage tank, batching kneading, cooling material, and vibration molding, and use a high-power induced draft fan to directly send it to the rear combustion chamber of the rear rotary kiln for waste heat incineration. During the initial design, the positions of the raw anode manufacturing workshop, asphalt melting workshop, and combustion chamber after petroleum coke calcination are optimized, so that the asphalt fume generated by green anode manufacturing and asphalt melting can be introduced into the combustion chamber more easily and conveniently. Save investment and reduce costs. Use the calcined flue gas with a temperature of 1100-1200°C in the combustion chamber of the rotary kiln to pass the asphalt flue gas through the combustion chamber of the rotary kiln. The tar and polycyclic aromatic hydrocarbons in the asphalt flue gas are decomposed and burned to effectively remove benzopyre...

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Abstract

The invention relates to a method for high-efficiently processing asphalt fumes, which is characterized in that the asphalt fumes produced by the green anode pass through the rotary kiln rear combustion chamber by utilizing the calcined smoke of the rotary kiln rear combustion chamber, and tar and polyaromatic hydrocarbon in the asphalt fumes in the rotary kiln rear combustion chamber is decomposed and combusted, so the harmful substances such as the benzopyrene and the like can be effectively removed. The invention is a novel technology designed for processing the carbon formation asphalt fumes. The asphalt fumes which are produced by the green anode and the smelting of the asphalt are combusted in the rotary kiln rear combustion chamber so as to be purified. The harmful substance-benzopyrene is completely removed. The running cost is low, and no additional fuel is added. The surplus heat is adequately used and can be recycled.

Description

technical field [0001] The invention relates to the technical field of environmental protection for the production of prebaked anodes for aluminum electrolysis, in particular to a method for efficiently treating waste heat incineration of pitch flue gas during the production process of prebaked anodes for aluminum electrolysis. Background technique [0002] The prebaked anode is made of calcined petroleum coke, pitch coke, residual pole (roasted crushed), raw crushed as aggregate, and coal tar pitch as binder. The raw anode formula is equipped with 14%-17% coal asphalt. The raw anode manufacturing process is as follows figure 1 shown. [0003] In addition to producing a large amount of dust during the production of raw anodes, a large amount of asphalt fume is also generated in the processes of asphalt melting, kneading and vibration molding. After thermal decomposition of coal tar pitch, the exhaust gas is yellowish brown, and its main components are hydrocarbon gas cond...

Claims

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Application Information

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IPC IPC(8): F23G7/06
CPCY02E20/12
Inventor 杨实宁德元刘仕宏周道生郭峻李再芳曹显平陈石平赵永林张亚宏刘胜谢志群马华远张开祺陶进
Owner YUNNAN YUANXIN CARBON CO LTD
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