【摘要】：遼河油田現(xiàn)有注汽鍋爐347臺,大部分已運行15年以上,由于缺少必要的技術手段,鍋爐熱效率已有不同程度的降低,造成鍋爐熱效率降低的主要原因是煙溫高,煙氣指標沒有在最佳狀態(tài),為了解決鍋爐熱效率降低這個實際難題,本課題開展了“注汽鍋爐脈動在線吹灰技術研究與應用”,完成了在線燃氣脈沖吹灰降低排煙溫度裝置研制,通過大量的室內(nèi)試驗工作表明,該裝置能夠?qū)崿F(xiàn)在線吹灰,使煙氣溫度由最高時的360℃下降到250℃以下,下降幅度達到100℃以上,效果明顯,因此,該裝置能夠有效地提高鍋爐的熱效率。在線燃氣脈沖的發(fā)生器在吹灰裝置的下游,是燃氣發(fā)生爆燃的主要的空間。本論文利用FLUENT軟件,對吹灰裝置進行了數(shù)值模擬,得到了發(fā)生器內(nèi)的流場分布,計算出發(fā)生器內(nèi)的燃燒過程中溫度分布和壓力分布,以及不同點火位置時的溫度和速度云圖,通過云圖分析得到發(fā)現(xiàn),在中心點點燃時,火焰溫度更高,反應更劇烈,因此裝置中優(yōu)先選擇了中心點點火方式。
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圖片說明：燃氣脈沖吹灰系統(tǒng)安裝示意圖
[Abstract]:There are 347 steam injection boilers in Liaohe Oilfield, most of which have been in operation for more than 15 years. Due to the lack of necessary technical means, the thermal efficiency of boilers has been reduced to varying degrees. The main reasons for the decrease of boiler thermal efficiency are the high smoke temperature and the lack of smoke index in the best state. In order to solve the practical problem of boiler thermal efficiency reduction, this paper has carried out the research and application of pulsating on-line soot blowing technology of steam injection boilers. The on-line gas pulse soot blowing device for reducing smoke exhaust temperature has been developed. a large number of laboratory tests show that the device can realize on-line soot blowing, and the flue gas temperature can be reduced from 360 鈩，

本文編號：2510149