电力科学与工程
電力科學與工程
전력과학여공정
INFORMATION ON ELECTRIC POWER
2015年
4期
73-78
,共6页
制粉系统%煤种适应性%燃煤成本%效益
製粉繫統%煤種適應性%燃煤成本%效益
제분계통%매충괄응성%연매성본%효익
pulverizing system%coal adaptability%cost of coal%benefits
针对某燃煤电厂300 MW中速磨煤机直吹式制粉系统，通过采用制粉系统、一次风系统与空预器系统联合设计与改造的方式，提高制粉系统对煤种的适应性以及制粉系统出力，改造过程中通过设备选型分析及校核计算、冷态动力场试验、磨煤机性能试验及锅炉优化燃烧调整，使制粉系统改造达到了预期效果。试验结果表明：在锅炉效率保持不变的前提下，制粉系统、一次风系统与空预器系统联合改造后磨煤机出力得到有效提高，机组对煤种的适应能力得到显著增强，同时系统改造后有效提高了一次风机裕量以及热一次风温，减少磨煤机设备维护、取得了较好的经济和安全效益。
針對某燃煤電廠300 MW中速磨煤機直吹式製粉繫統，通過採用製粉繫統、一次風繫統與空預器繫統聯閤設計與改造的方式，提高製粉繫統對煤種的適應性以及製粉繫統齣力，改造過程中通過設備選型分析及校覈計算、冷態動力場試驗、磨煤機性能試驗及鍋爐優化燃燒調整，使製粉繫統改造達到瞭預期效果。試驗結果錶明：在鍋爐效率保持不變的前提下，製粉繫統、一次風繫統與空預器繫統聯閤改造後磨煤機齣力得到有效提高，機組對煤種的適應能力得到顯著增彊，同時繫統改造後有效提高瞭一次風機裕量以及熱一次風溫，減少磨煤機設備維護、取得瞭較好的經濟和安全效益。
침대모연매전엄300 MW중속마매궤직취식제분계통，통과채용제분계통、일차풍계통여공예기계통연합설계여개조적방식，제고제분계통대매충적괄응성이급제분계통출력，개조과정중통과설비선형분석급교핵계산、랭태동력장시험、마매궤성능시험급과로우화연소조정，사제분계통개조체도료예기효과。시험결과표명：재과로효솔보지불변적전제하，제분계통、일차풍계통여공예기계통연합개조후마매궤출력득도유효제고，궤조대매충적괄응능력득도현저증강，동시계통개조후유효제고료일차풍궤유량이급열일차풍온，감소마매궤설비유호、취득료교호적경제화안전효익。
In this paper, we focus on the research of a 300 MW medium speed mill pulverizing system.Through the joint design and transformation of milling system, primary air system and air pre-heater system, we improved coal adaptability and output of the pulverizing system.During the transformation process we also did some equip-ment selection analysis and checking calculations, cold dynamic field tests, mill performance tests and the boiler combustion optimization, finally the result met our expectations.The result showed that: In the context of un-changed boiler efficiency, the milling system, primary air system, air pre-heater system and mill output had been effectively improved, and the unit coal adaptability had been significantly enhanced.At the same time, after the transformation, the primary fan margin and the primary air temperature were significantly improved, and the mill e-quipment maintenance was reduced.Finally we got good economic and safety benefits.
