CAJ | 학술논문

在石化企业蒸汽动力系统中存在大量减温减压器,将高品位蒸汽降为低品位蒸汽以满足生产过程对不同品位热量的需求.减温减压器在降低蒸汽品位的同时存在着很大的火用损失.采用背压汽轮机代替减温减压器是减少火用损失的有效方法.为了确定背压汽轮机的适用范围,本文提出背压汽轮机的经济出力分界点的概念以及确定该分界点的模型,并讨论了不同价格条件下该分界点的变化趋势.
재석화기업증기동력계통중존재대량감온감압기,장고품위증기강위저품위증기이만족생산과정대불동품위열량적수구.감온감압기재강저증기품위적동시존재착흔대적화용손실.채용배압기륜궤대체감온감압기시감소화용손실적유효방법.위료학정배압기륜궤적괄용범위,본문제출배압기륜궤적경제출력분계점적개념이급학정해분계점적모형,병토론료불동개격조건하해분계점적변화추세.
Petrochemical plants need steam under different temperature and pressure to guarantee normal operation.Throttle valves are wide used to reducer temperature and pressure of steam at higher pressure level to meet the demand for steam at lower pressure level,which causes a lot of exergy loss in the process.It is an effective method to use hack-pressure turbine in this case to reduce exergy loss.In this paper,the concept of economic critical point for back-pressure turbine is proposed,and the model to obtain the critical point is established.Furthermore,the variation tendency of the critical point at different economic conditions is discussed.