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首页> 外文会议>第六届煤燃烧国际会议(The 6th International Symposium on Coal Combustion) >THERMAL CALCULATION ON A 300MW COAL FIRED BOILER WITH O2/CO2 COMBUSTION
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THERMAL CALCULATION ON A 300MW COAL FIRED BOILER WITH O2/CO2 COMBUSTION

机译：O2 / CO2燃烧300MW燃煤锅炉的热力计算。

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Generation of electricity of which coal is the main fuel emits about 25% CO2 of the total caused by the human activity and that is the biggest resources of CO2 release. The O2/CO2 combustion technology can control the emission of CO2, SO2 and NOx, and is a very promising clean coal combustion technology. Based on an existing unit in North China, the thermal calculation of a 300MW boiler combustion in O2/CO2 has been carried, which involves the calculation of coal adiabatic combustion temperature, boiler heat balance, design and checking calculation of furnace and convection pass. The calculation shows that when O2 concentration is 30% in the oxidant, the furnace gas temperature is higher than combustion with air to some extent, the heating surfaces should be retrofitted with the aim of operation safety. To avoid slagging, the furnace exhaust temperature is determinated as 1200℃ and the furnace will be taller. Besides water cooled wall there is surperheating and reheating surface in the furnace, therefore, in the convection pass there will be smaller surface needed. Except that the economizer is equivalent to the conventional boiler, the other convection surfaces all reduce, and the reheater even decreases to 5.4%. The study shows the feasibility of O2/CO2 combustion of coal fired boiler in power plant, and calculation results may be the reference of boiler designing.
机译：以煤炭为主要燃料的发电所产生的二氧化碳排放量约占人类活动总量的25％，这是释放二氧化碳的最大资源。 O2 / CO2燃烧技术可以控制CO2，SO2和NOx的排放，是一种非常有前景的清洁煤燃烧技术。在华北现有机组的基础上，进行了3​​00MW锅炉O2 / CO2燃烧的热力计算，包括煤绝热燃烧温度的计算，锅炉热平衡，炉膛设计和对流道次的计算。计算表明，当氧化剂中O2浓度为30％时，炉内气体温度在一定程度上要高于空气燃烧，出于安全考虑，应对受热面进行改造。为避免结渣，炉子排气温度确定为1200℃，炉子会更高。除水冷壁外，炉子中还有过热和再热表面，因此，在对流通道中，所需的表面会更小。除了省煤器等效于传统锅炉外，其他对流面都减小了，再热器甚至降低到了5.4％。研究表明，电厂燃煤锅炉进行O2 / CO2燃烧是可行的，计算结果可作为锅炉设计的参考。

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