摘 要：本課題的研究試圖從循環流化床鍋爐的幾個主要經濟指標（燃燒效率、飛灰含碳量、煤耗、風機電耗）方面進行分析，并依據國內外對于此課題研究的現狀，總結一些提高其經濟性的運行調整經驗，以便在實際運行中加以實施，充分發揮循環流化床鍋爐的優勢。

　　　循環流化燃燒技術作為一種高效、低污染清潔燃燒技術，在我國已得到了迅速發展。但其較煤粉爐而言，熱效率要低一些。本文結合南京金陵石化公司熱電廠220T/H CFB鍋爐，首先介紹其設備結構及布置，包括鍋爐主要參數；燃料參數；汽水系統；風煙系統；燃料系統；底灰系統；鍋爐及輔助設備相關參數。然后對循環流化床鍋爐進行熱效率的計算，包括工況表；鍋爐正平衡效率；鍋爐反平衡效率（固體未完全燃燒熱損失、氣體未完全燃燒熱損失、排煙熱損失、鍋爐外部冷卻熱損失、灰渣物理熱損失）。最后對影響鍋爐熱效率主要因素和循環流化床鍋爐運行方式調整進行討論，分別包括燃料特性的影響；飛灰份額的影響；影響排煙熱損失的因素；影響固體未完全燃燒熱損失的因素以及風量的調整。

關鍵詞：循環流化床鍋爐；經濟性；燃燒效率；運行調整

Abstract：Research of this subject from the circulating fluidized bed boiler trying several major economic indicators (combustion efficiency, carbon content of fly ash, coal, wind electrical energy consumption) were analyzed, and according to international status for this research, summarizes some adjustment experience of the running to improve their economic to be implemented in the actual operation, give full play to the advantages of circulating fluidized bed boiler.

    CFB combustion technology as an efficient, low pollution and clean combustion technology, in China, has been developing rapidly. However, comparison of CFB and the pulverized coal, CFB’s thermal efficiency is lower. this topic combination of Nanjing Jinling Petrochemical Company Thermal Power Plant 220T / H CFB boiler, first introduced the structure and layout of their equipment, including the main parameters of the boiler; fuel parameters; water system; wind and smoke systems; fuel system; bottom ash system; boilers and auxiliary equipment related parameters. Then the thermal efficiency of circulating fluidized bed boiler calculations, including the condition table; boiler efficiency is balanced; boiler efficiency of anti-balance(incomplete combustion of solid heat loss, incomplete combustion gas heat loss, heat losses and boiler external cooling Heat loss, ash physical heat loss).Then on the main factors affect the thermal efficiency of boilers and circulating fluidized bed boiler means to discuss the impact of fuel properties were included; share of fly ash; of exhaust gas heat loss factors; of incomplete combustion of solid heat loss factors and the amount of wind adjustment. 

Keyword: Circulating fluidized bed boiler; Economy; Combustion efficiency; Operation adjustment