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Oxygen-enriching heat-accumulating air preheating and flue gas recirculating apparatus

A technology of flue gas recirculation and oxygen-enriched air, applied in waste heat treatment, lighting and heating equipment, indirect carbon dioxide emission reduction, etc., can solve the problem of reduction of combustion products, increase of combustion temperature, oxygen-enriched combustion or high-temperature heat storage combustion transformation Problems such as the decline in investment economy, to achieve the effect of improving investment economy

Inactive Publication Date: 2005-05-04
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0015] 3. Technical and economic problems in the use of oxygen-enriched, high-temperature regenerative combustion
Using oxygen-enriched or high-temperature regenerative combustion technology on existing industrial furnaces will cause two technical problems: the increase of combustion temperature and the reduction of combustion products
Whether it is to replace the material of the furnace body or to modify the structure of the furnace body, the investment economy of oxygen-enriched combustion or high-temperature regenerative combustion transformation will be reduced.

Method used

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  • Oxygen-enriching heat-accumulating air preheating and flue gas recirculating apparatus
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  • Oxygen-enriching heat-accumulating air preheating and flue gas recirculating apparatus

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Embodiment Construction

[0031] according to figure 1 The schematic diagram of the combined process of the oxygen-enriched combustion system and the flue gas recirculation system shows that the combined process of the two is that the oxygen-enriched air passes through the oxygen-enriched air inlet pipe 3 in the oxygen-enriched air preheater and between the furnace and the air preheater. The flue gas discharged from the flue 5 in between is subjected to heat exchange in the oxygen-enriched air preheater 4, wherein the oxygen-enriched air absorbs the heat of the flue gas and is heated, and the flue gas at the outlet of the oxygen-enriched air preheater is cooled; the gas passes through the gas inlet pipe 1 In the gas preheater, the flue gas from the outlet of the oxygen-enriched air preheater performs heat exchange in the gas preheater 2, in which the gas absorbs the heat of the flue gas and is heated, and the flue gas at the outlet of the gas preheater cools down and enters the flue gas Gas discharge p...

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Abstract

The present invention relates to the combination of preheating with heat accumulated high-temp air, promoting combustion with oxygen-enriched air and recirculating flune gas for industrial furnace. Its advantages are high heat efficiency, low requirement for the material for furnace body, and low glue gas concentration in furnace.

Description

technical field [0001] The invention belongs to the field of effective utilization of heat energy, and relates to a combustion technology of an industrial furnace and a flue gas recirculation device. Background technique [0002] Current status of industrial furnace energy utilization [0003] In the smelting and processing of industrial raw materials or the manufacture of finished products, the heating devices required to achieve the expected physical or chemical changes are generally called industrial furnaces. Industrial furnaces are widely used in various industries within the industry. Due to the different energy sources, structures, functions and demand characteristics, not only their types are increasing, but their functions are also increasing due to different purposes. The heating process can be said to be an indispensable process in the manufacturing and processing of the metal industry and all industries. About half of the total sales of industrial furnaces are ...

Claims

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Application Information

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IPC IPC(8): F23C9/00F23L15/00F27D17/00
CPCY02E20/34
Inventor 王立童莉葛杨晶
Owner UNIV OF SCI & TECH BEIJING
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