焦爐循環(huán)煙氣加熱技術控制氮氧化物生成的研究與實踐

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摘 要：闡述循環(huán)煙氣加熱技術在焦爐生產(chǎn)過程中改變了燃燒機理，使焦爐燃燒室垂直溫度分布均勻，降低焦爐生產(chǎn)標準溫度，從而控制氮氧化物的生成，分析循環(huán)煙氣燃燒模式變化帶來的節(jié)能減排效果；介紹將該技術應用于焦化生產(chǎn)實踐所增加的工藝控制點、設備配置情況及其產(chǎn)生的效果。

關鍵詞：循環(huán)煙氣加熱；垂直溫度分布；低氮燃燒；超低排放

RESEARCH AND PRACTICE ON CONTROLLING NITROGEN OXIDE GENERATION USING COKE OVEN CIRCULATING FLUE GAS HEATING TECHNOLOGY

Wang Ming    Yang Zhiwei    Liu Yanqi

（Fangda Special Steel Technology Co.， Ltd.     Nanchang    330012）

Abstract：The article explains that the circulating flue gas heating technology has changed the combustion mechanism in the coke oven production process， making the vertical temperature distribution of the coke oven combustion chamber uniform， reducing the standard temperature of coke oven production， thereby controlling the generation of nitrogen oxides， and analyzing the energy-saving and emission reduction effects brought about by the changes in the circulating flue gas combustion mode. This article introduces the process control points， equipment configuration， and the resulting effects of applying this technology to coking production practice.

Key words： circulating flue gas heating；vertical temperature distribution；low nitrogen combustion；ultra-low emissions

0    前    言

焦化廠在生產(chǎn)過程中需要在燃燒室燃燒煤氣對碳化室提供熱量，將原煤進行干餾產(chǎn)生焦炭，同時排放燃燒室產(chǎn)生的廢氣。（剩余4811字）