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1、课程设计报告名称:锅炉课程设计题目:DG1025th锅炉热力计算一、任务书1二、设计内容1一、课程设计的目的与要求11.1 目的11.2 要求1二、设计正文11燃烧产物计算2炉膛计算(结构、阻力、传热)3水平烟道计算(结构、阻力、传热)4转向室计算(结构、阻力、传热)5低温过热器计算(结构、阻力、传热)6省煤器计算(结构、阻力、传热)7空气预热器计算(结构、阻力、传热)8锅炉本体效率校核9喷水量校核10结构汇总表H阻力汇总表12水、蒸汽、空气、烟气温度汇总表13喷水量校核汇总表14锅炉效率校核15参考文献锅炉原理课程设计任务书一、目的与要求1 .熟悉前苏联1973年锅炉热力计算方法;2 .对东
2、方锅炉厂1025th锅炉进行校核设计;二、主要内容1 .锅炉受热面结构计算2 .锅炉水、水蒸汽、烟道阻力计算3 .锅炉100%ECR工况热力计算三、进度计划序号设计(实验)内容完成时间备注1燃料特性计算2014.8.2525日开始2烟气焰计算2014.8.263炉膛结构、阻力、热力计算2014.8.274水平烟道结构、阻力、热力计算2014.8.285转向室结构、阻力、热力计算2014.8.296竖井烟道结构、阻力、热力计算2014.9.17空预器结构、阻力、热力计算2014.9.28喷水量校核2014.9.39整理数据,撰写热力计算书,打印2014.9.45日下午结束10答辩2014.9.5
3、5日下午结束四、设计(实验)成果要求1 .按照教务处要求,提交课程设计报告。2 .每天上午10:00,下午3:00签到。3 .集体答疑,讲解难点。4 .本次课程设计共分为63组,以小组形式答辩。五、考核方式1 .提交课程设计报告。2.参加答辩。指导教师:二、设计内容已知条件表11锅炉参数符号数值1.1 锅炉额鳏发量D935t/h1.2 再热器蒸汽流量DZr788.5t/h1.3 过热器由口赛汽S力1pi17.33MPa1.4 汽包压力(假定)Pdrum18.83MPa1.5 顶棚+覆进口/出口压力p7p18.8318.731.6 低过进口屈口压力p/p”18.7318.331.7 大屏(前屏)
4、进口/出口压pp18.3318.03力1.8 后屏进口/出口压力p/p”18.0317.731.9 高过进口/出口压力p/p”17.7317.3$1.10 再热器入口蒸汽压力pi276MPaMl再热器出口蒸汽压力pji2358MPa1.12 低温再热器进口/出口压力p/p”3.763.7L13中温再热器进口/出口压力p7p”3.73.641.14 高温再热器进目/出口压力p,/p”3.64F581.15 过热器出口蒸汽温度t5401.16 再热器入口蒸气温度i3211.17再热器出口蒸汽温度t,25401.18再热蒸汽平均压力P2pj3.67MPa1.19给水温度tgs2701.20给水压力(
5、假定)PgS19.33MPa1.21给水焙IgS1182.08kJ/kg1.22一次风温trk,l3701.23二次风温trk,23612所选煤种连州煤Vdaf1500可磨系数K=1.23制粉系统钢球磨煤机,中间储仓式、热风送风4进风温度暖风器关闭20暖风器开启705飞灰占灰分的质量份额afh=0.92-6 飞灰平均粒径13m7 飞灰浓度Gfh=Aar*afh/100=0.296kg/kg2.2燃烧产物计算表21理论空气量Vk0vn20NmVkg4.9702理论氮气容积NmVkg3.9373三原子气体RO?的容积VDAONmVkg0.9994理论水蒸汽容积IXU乙Vh200NmVkg0.306
6、5理论烟气容积V0Vym3kg5.243空气平衡表表3入口过量空气系数出口过量空气系数漏风系数受热面名称名称,Haa炉膛Fnc1.21.250.05大屏过热器F-SH1.251.250壁式再热器W-RH1.251.280.03后屏过热器R-SH1.281.280中温再热器MT-RH1.281.290.01后水引出管RW-Out1.291.290高温再热器HT-RH1.291.320.03后后墙水冷壁管束RRWWT1.321.320高温过热器HT-SH1.321.350.03悬吊管H-T1.351.350低过垂直段LT-SH-V1.351.360.01转向室R-D1.361.370.01低温过热
7、器LT-SH1.371.380.01省煤器ECO1.381.390.01空气预热器APH1.391.510.12烟气特性表4项目名称符号单位FncF-SHW-RHR-SHMT-RHRW-OutHT-RHRRWWTHT-SHH-TLrPSH-VR-DLT-SHECOAPH烟道进口过量空气系数,-1.2001.2501.2501.2801.2801.2901.2901.3201.3201.3501.3501.3601.3701.3801.390烟道出口过量空气系数a,-1.2501.2501.2801.2801.2901.2901.3201.3201.3501.3501.3601.3701.380
8、1.3901.510烟道平均过量空气系数aPj-1.2251.251.2651.281.2851.291.3051.321.3351.351.3551.3651.3751.3851.45过剩空气量VNm3Zkg1.11821.24251.31701.39151.41641.44121.51581.59031.66491.73941.76431.81401.86371.91342.2364水蒸汽容积Vh20Nm3Zkg0.32420.32620.3274032860.32900.32940.3306033180.33300.3342033460.33540.33620.33700.3422烟气总
9、容积VyNm3Zkg6.37896.50516.58096.65666.68186.70716.78286.85866.93437.01017.03537.08587.13637.18687.5151烟气中RCh气体容积分额RO2-0.15670.15360.15190.15010.14960.14900.14740.14570.14410.14260.14210.14110.14010.13910.1330烟气中水蒸汽容积分额H2O-0.05080.05010.04980.04940.04920.04910.04870.04840.04800.04770.04760.04730.04710.
10、04690.0455烟气中R02和HzO总的容积分额n-0.20750.20380.20160.19950.19880.19810.19610.19410.19220.19030.18960.18840.18720.18600.1785烟气质量Gykg/kg8.62958.79178.88918.98649.01899.05139.14879.2461934349.44089.47329.53819.60309.668010.0898飞灰无因次浓度Phkg/kg0.03430.03360.03330.03290.03280.03270.03230.03200.03170.03130.03120
11、.03100.03080.03060.0293理论烟气焰理论空气始飞灰焰Ifh炉膛F-SHHT-RHRRWWTHT-SHH-TLT-SH-VR-DI;GthCmFncaPjaPjaPjapjapjaPjawkj/kgkj/kgkj/kgpj1.251.3051.32L3351.351.3551.36510072665623.71.2259149509609699799829892001472132149.789718521925194419641984199120043002240199876.91819281629262956298630163026304640030322688105.62766381039573998403840784092411950038473394136.43742483250195070512151725189522360046754117163.94748586960956157621962806301634270055284861196.75766694072077280735374267450749980064045609227.868188034834284278511859586238