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    燃煤是火力發電廠的主要原料,煤的費用占發電成本的70%左右,為了大力節約一次能源,提高經濟效益,就必須加強(燃煤管理) 20. 煤中的水分,根據其存在的形式不同,可以分為(內在水分)(表面水分)和(結晶水)。

    來源:未知 閱讀次數:
      燃料基礎知識
    1. 火電廠對燃煤進行化驗的目的(檢驗燃煤質量)(掌握燃煤特性)(準確計算煤耗率)
    2. 防止煤堆自燃的措施有(壓實)(分堆)(堆煤不宜過高)(定期測溫)
    3. 燃料管理包括哪些內容(驗收燃料)(接卸燃料)(輸送燃料)(貯存燃料)
    4.煤堆溫度降溫的方法有(倒堆)(松堆)(灌水)
    5. 無煙煤的特點(發份低)(含碳量高)
    6. 煙煤揮發分含量是(10%-45%)
    7. 煤的成份分析方法有(元素分析)和(工業分析)。
    8. 火力發電廠污染物主要是(二氧化硫)
    9. 燃煤表面水分的增加,會給煤倉輸煤管道及給煤機造成(粘結)(堵塞)
    10. 無煙煤的揮發份是(小于或等于10%)
    11. 煤的自燃主要是因為煤與空氣中(氧)接觸的的作用
    12. 煤的(可磨性)特性,標志著粉碎煤的難易程度。
    13. 按燃料形態的不同,可分為(固體燃料)(液體燃料)(氣體燃料)
    14. 煤的分類是以(揮發份含量)和(結焦性)為主要依據。
    15. 灰溶點低的煤,對鍋爐燃燒的影響是(容易結焦)
    16. 標準煤應用基低位發熱量規定為(7000kcal/kg)
    17. 各種煤的著火溫度與煤的(揮發份)含量有密切關系
    18. 煤中的化學元素可達三十多種,一般可列為(碳)(氫)(氧)(氮)(硫)(水分)(灰分)
    19. 燃煤是火力發電廠的主要原料,煤的費用占發電成本的70%左右,為了大力節約一次能源,提高經濟效益,就必須加強(燃煤管理)
    20. 煤中的水分,根據其存在的形式不同,可以分為(內在水分)(表面水分)和(結晶水)。
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