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題名 | 蓄熱式重油燃燒器降低氮氧化物排放控制技術之探討 |
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作者姓名(中文) | 張文振; 吳森榮; 焦鴻文; 鐘一郎; | 書刊名 | 能源季刊 |
卷期 | 33:1 2003.01[民92.01] |
頁次 | 頁100-113 |
分類號 | 400.15 |
關鍵詞 | 蓄熱式燃燒器; 高溫空氣燃燒; 氮氧化物控制; 階段燃料; 外部煙氣循環; Regenerative burner; High temperature preheating air combustion; NOx control; Fuel staging; External flue gas recirculation; |
語文 | 中文(Chinese) |
中文摘要 | 蓄熱式燒燒器由於其燃燒預熱空氣的溫度可高達1000℃以上,故如何有效控制其氮氧化物的排放量為一重要且迫切的課題。本研究主要是以實驗的方法,利用習知之階段燃料法(Fuel staging)與外部煙氣循環(External flue gas re-circulation)的控制方式,來探討其對於蓄熱式重油燃燒器氮氧化物排放量的影響。由實驗結果顯示採用階段燃料法時,在爐溫為1240℃之條件下,當%F2/(F1+F2)再提高至1000%,即專燒F2之條件時,其NOx排放量更可降低至173ppm,其NOx降低率則為62%。另外,在1200℃、1250℃及1300℃等三種不同爐溫條件下,以不同的的FGR添加率測試其NOx降低率所得到的結果,發現其整體的趨勢十分接近,在30∼35%的FGR添加率條件下,其NOx降低率約介於25~30%的FGR添加率條件下,其NOx降低率約為35%左右;在提高至70%以上的FGR添加率時,其NOx降低率則達到約45%左右。 |
英文摘要 | Regenerative combustion with higher than 1000℃ preheated air correspondingly emits more NOx pollutants. To control NOx emission is an important issue in the study of regenerative combusion. Fuel staging and externally flue gas re-circulation were applied to control NOx emission of regenerative burner in this study. It is observed for furnace operating temperature at 1240℃, when F2/(F1+F2) ratio increases from 0% to 50%, the NOx emission drops significantly from 450ppm TO 300ppm, a NOx reduction rate 33% is obtained. When F2/(F1+F2) ratio increases to 100%, fully burning on F2 fuel is investigated and NOx emissions is further reduced to 173ppm, a maximum of NOx reduction rate 65% is achieved. Externally flue gas re-circulation method was also applied to control NOx emission in this investigation. The test result shows the similar tendency of NOx reduction rate under different furnace operating temperature from 1200℃ to 1300℃. The results show 30~35% FGR could achieve 25~30% NOx reduction, and 45~50% FGR could achieve 35% NOx reduction. The reduction could be further improved 45% by increasing the FGR with more than 70% FGR. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。