回收流化床锅炉底渣热量方式对机组热经济性的影响  

Influence of CFB Boiler Bottom Ash Heat Recovery Mode on Thermal Economy of Units

作　　者：曾兵[1] 方欣[1] 

机构地区：[1]中国能源建设集团广东省电力设计研究院,广州510663

出　　处：《应用能源技术》2013年第5期11-15,共5页Applied Energy Technology

摘　　要：在汽轮机THA工况和定功率条件下,采用热平衡法对三种不同容量等级的循环流化床机组进行研究,分析分别采用风水联合冷却式和纯水冷式两种回收流化床锅炉底渣热量方式时对机组热经济性的影响。计算结果表明:两种底渣热量回收方式均提高全厂热经济性;采用风水联合冷却式时的全厂热耗率更低,全厂标准煤耗率更少;随着水冷比例的减小,采用风水联合冷却式比采用纯水冷式节约的标准煤耗率越大。Based on the heat balance calculation about the principled thermal system in turbine heat acceptance condition, the unit thermal economic indicators of three CFB power plants in China with two different bottom ash heat recovery modes were studied. The results indicated that both the use of air water combined mode and water mode improved the thermal economy of power unit. Compared with the water mode, the airwater combined mode obtained higher plant thermal efficiency, lower plant heat rate and less standard coal consumption. The save standard coal consumption between the air - water combined mode and water mode increased with the decreasing of water cooling ratio.

关 键 词：循环流化床 冷渣器 底渣热量回收 热经济性 

分 类 号：TK229.2[动力工程及工程热物理—动力机械及工程]