CAJ | 학술논문

以他人建立的富氧燃烧条件下锅炉燃料燃烧计算为框架，结合富氧锅炉热力系统的特点，运用Visual Basic 6.0开发了富氧燃烧条件下燃料燃烧计算软件，分析了锅炉操作参数中氧气浓度对锅炉效率、空气量、烟气量的影响；分析了富氧燃烧条件下排烟温度、过量氧气系数对锅炉热效率的影响。结果显示：理论空气量和理论干烟气量随着氧气浓度的增加而减少；锅炉热效率随着氧气浓度的增加和过量氧气系数的减小呈上升趋势，而且排烟温度越高，锅炉热效率上升越慢；低氧气浓度下，氧气浓度的变化对锅炉燃烧用空气量、烟气量、锅炉热效率、燃料消耗量的影响较为显著；高氧气浓度下，影响相对减弱。
이타인건립적부양연소조건하과로연료연소계산위광가，결합부양과로열력계통적특점，운용Visual Basic 6.0개발료부양연소조건하연료연소계산연건，분석료과로조작삼수중양기농도대과로효솔、공기량、연기량적영향；분석료부양연소조건하배연온도、과량양기계수대과로열효솔적영향。결과현시：이론공기량화이론간연기량수착양기농도적증가이감소；과로열효솔수착양기농도적증가화과량양기계수적감소정상승추세，이차배연온도월고，과로열효솔상승월만；저양기농도하，양기농도적변화대과로연소용공기량、연기량、과로열효솔、연료소모량적영향교위현저；고양기농도하，영향상대감약。
Based on the calculation method of fuel combustion in boiler under the condition of the oxygen-enriched combustion, combining with the characteristics of oxygen-enriched boiler thermodynamic system, the fuel combustion calculation software was developed using Visual Basic 6.0. By the software, the influence of the oxygen concentration on the boiler efficiency, combustion air volume and smoke gas volume was analyzed as well as the impact of discharge smoke temperature, excess oxygen coefficient on the boiler thermal efficiency. The results show that theoretical air volume and smoke volume decrease with the increase of oxygen concentration; the boiler thermal efficiency rises with the increase of oxygen concentration and reduction of excess oxygen coefficient; the higher the smoke temperature, the slower the boiler thermal efficiency rising rate; under lower oxygen concentration, the oxygen concentration has significant influence on the combustion air volume, smoke volume, boiler thermal efficiency and fuel consumption; on the other hand, under higher oxygen concentration, oxygen concentration has relatively less influence on the above mentioned factors.