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題 名 | 起爐基料之選擇及高濕玉米穗軸對燃燒爐性能之影響 |
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作 者 | 馮丁樹; 王岱淇; | 書刊名 | 農業工程學報 |
卷 期 | 40:1 1994.03[民83.03] |
頁 次 | 頁33-43 |
分類號 | 434.251 |
關鍵詞 | 燃燒爐; 玉米穗軸; 含水率; 點火基料; Biomass burner; Corn cobs; Moisture content; Ignition mediums; |
語 文 | 中文(Chinese) |
中文摘要 | 在臺灣高濕氣候、高土地利用率條件下,玉米常在高含水份的情況下收穫,而為適應乾燥設備的使用,其脫粒作業常在乾燥中心附近進行,高濕的穗軸因而大量堆積,對環境造成嚴重污染。為此農委會於民國七十五年自美國引進一套Sujup 378 Mcal/Hr之穗軸燃燒爐一座,置於種苗繁殖改良場,其每小時能量約可焚化120公斤乾穗軸。其後並裝配玉米穗軸貯存倉與進爐輸送設備及熱能回收裝,以利用其餘熱導入乾燥倉中進行乾燥。其後亦利用相同原理彷製一台,設在義竹鄉農會進行實地操作。但隨後發現因脫粒後之玉米穗軸相當潮濕,初期以生質燃燒爐作焚化處理時,有點火不易及影響燃燒效率之現象。 本文之目的在利用種苗場之穗軸燃燒爐,針對高濕穗軸,以不同水分含量之玉米穗軸作為燃料進行燃燒,探討點火基料型式之設計對燃燒爐起爐的影響,以解決點火起爐不易的現象,並分析其對燃燒爐之燃燒情形所造成之影響。利用此一試驗,同時設法克服現存穗軸水分含量過高的問題,以期這種型式之燃燒爐能適用於國內其它農業廢棄物處理。 實驗發現,以16公斤的乾穗軸為點火基料,進料量為每分鐘1公斤時,爐體對穗軸含水率可承受至38%。若以30公斤的乾穗軸為點火基料,進料量為每分鐘1公斤時,爐體對穗軸含水率可承受至52%。以溫度而言,爐內溫度以600℃以上時,在高濕續料送入過程,較能確保起爐的順利。研究中亦發現,欲以稻殼混合高濕穗軸以降低總含水率,並解決點火不易的問題,是不可行的。 |
英文摘要 | The handling of agricultural biomass products is a serious topic we have to face nowadays, namely the rice hull and corn cobs that are continuously collected at some farmers’ associations though the receiving of either wet ear corns from farmers for drying or the dry paddy for further milling. These farm by-products can be used as animal feeds or the growing mediums for flower growers, but with a limited quantity. However, through proper burning, the biomass products can be handled safely in a large scale with the recovering heat for grain drying. In 1985, the Seed Service imported from the States a Sukup biomass burner, specially designed for burning the biomass such as corn cobs, stalks and rice hulls with a heat recovery rte of 378 Mcal/hr. and a burning capacity of 120 Kg of cobs every hour. The captured heat was conducted back to the stationary dryers for ear corn drying. Financed by COA, two biomass burners of the same type were then installed at the Seed Service and Yii-Chu farmers’ association for further study. However, it was difficult to operate smoothly due to the high moisture of the corn cob supplied right after shelling. The moisture content affects the burner efficiency considerably. Objects of this research are to examine the burning efficiency of the present biomass burner located at the Seed Service under different moisture conditions of corn cobs in the burning process. Assisted burning material with rice hulls was also studied to find a possible solution that can be helpful for staring the wet cob burning. Results shows that the wet corn cobs with a moisture content up to 38% can be burned successfully at a rate of 1Kg per minute accompanied by 16Kg of dry cobs for its ignition medium. The moisture content of the cobs up to 52% can be burned smoothly with 30 Kg of dry cobs as the ignition medium. Inside the burner, however, the air temperature should be maintained more than 600℃, to facilitate a good staring. In this study, it revealed a fact that the rice hulls were not a good medium to assist the ignition process, for they were only burned under a very slow condition. |
本系統中英文摘要資訊取自各篇刊載內容。