炼钢厂炉外精炼系统设计计算书

炼钢厂炉外精炼系统设计计算,,,,,,,,,

序号,计算项目,符号表示,参数来源,计算公式,国际单位,计算结果,参数说明,规范依据,判断结果

一、LF钢包精炼炉设计计算,,,,,,,,,

1,钢包容量,V_ladle,设计值,100,t,100,钢包容量,设计任务书,

2,钢水温度,T_steel,设计值,1600,℃,1600,钢水温度,设计任务书,

3,目标温度,T_target,设计值,1650,℃,1650,目标温度,设计任务书,

4,钢水比热容,c_steel,查表值,0.84,kJ/(kg·℃),0.84,钢水比热容,材料手册,

5,加热功率,P_heating,计算值,V_ladle×1000×c_steel×(T_target-T_steel)/3600,kW,1166.7,加热功率,加热功率计算,

6,加热功率要求,P_heating_req,设计值,1000-1500,kW,1000-1500,加热功率要求,YB/T4403-2014,

7,加热功率判断,,判断值,"IF(P_heating≥1000ANDP_heating≤1500,""满足"",""不满足"")",,满足,验证加热功率是否符合要求,设计要求,

8,搅拌强度,q_stir,设计值,0.05,m³/t·min,0.05,搅拌强度,设计任务书,

9,搅拌气体流量,Q_stir,计算值,V_ladle×q_stir,m³/min,5,搅拌气体流量,搅拌气体流量计算,

10,搅拌气体压力,P_stir,设计值,0.8,MPa,0.8,搅拌气体压力,设计任务书,

11,脱硫效率,η_desulfur,计算值,0.7,,0.7,脱硫效率,脱硫效率计算,

12,脱硫效率要求,η_desulfur_req,设计值,≥0.6,,≥0.6,脱硫效率要求,YB/T4403-2014,

13,脱硫效率判断,,判断值,"IF(η_desulfur≥0.6,""满足"",""不满足"")",,满足,验证脱硫效率是否符合要求,设计要求,

二、RH真空精炼炉设计计算,,,,,,,,,

14,真空度,P_vacuum,设计值,67,Pa,67,真空度,设计任务书,

15,真空度要求,P_vacuum_req,设计值,≤100,Pa,≤100,真空度要求,YB/T4404-2014,

16,真空度判断,,判断值,"IF(P_vacuum≤100,""满足"",""不满足"")",,满足,验证真空度是否符合要求,设计要求,

17,循环流量,Q_cycle,设计值,100,t/min,100,循环流量,设计任务书,

18,循环时间,t_cycle,设计值,20,min,20,循环时间,设计任务书,

19,处理钢水量,V_treatment,计算值,Q_cycle×t_cycle,t,2000,处理钢水量,处理钢水量计算,

20,脱碳效率,η_decarbon,计算值,0.9,,0.9,脱碳效率,脱碳效率计算,

21,脱碳效率要求,η_decarbon_req,设计值,≥0.8,,≥0.8,脱碳效率要求,YB/T4404-2014,

22,脱碳效率判断,,判断值,"IF(η_decarbon≥0.8,""满足"",""不满足"")",,满足,验证脱碳效率是否符合要求,设计要求,

23,脱氢效率,η_dehydrogen,计算值,0.85,,0.85,脱氢效率,脱氢效率计算,

24,脱氢效率要求,η_dehydrogen_req,设计值,≥0.8,,≥0.8,脱氢效率要求,YB/T4404-2014,

25,脱氢效率判断,,判断值,"IF(η_dehydrogen≥0.8,""满足"",""不满足"")",,满足,验证脱氢效率是否符合要求,设计要求,

三、VD真空脱气炉设计计算,,,,,,,,,

26,真空度,P_vacuum_vd,设计值,67,Pa,67,真空度,设计任务书,

27,真空度要求,P_vacuum_vd_req,设计值,≤100,Pa,≤100,真空度要求,YB/T4405-2014,

28,真空度判断,,判断值,"IF(P_vacuum_vd≤100,""满足"",""不满足"")",,满足,验证真空度是否符合要求,设计要求,

29,脱气时间,t_degas,设计值,30,min,30,脱气时间,设计任务书,

30,脱气效率,η_degas,计算值,0.8,,0.8,脱气效率,脱气效率计算,

31,脱气效率要求,η_degas_req,设计值,≥0.7,,≥0.7,脱气效率要求,YB/T4405-2014,

32,脱气效率判断,,判断值,"IF(η_degas≥0.7,""满足"",""不满足"")",,满足,验证脱气效率是否符合要求,设计要求,

33,钢水氢含量,H_content,设计值,5,ppm,5,钢水氢含量,设计任务书,

34,目标氢含量,H_content_target,设计值,2,ppm,2,目标氢含量,设计任务书,

35,脱氢量,H_removed,计算值,H_content-H_content_target,ppm,3,脱氢量,脱氢量计算,

36,脱氢率,H_removal_rate,计算值,H_removed/H_content,,0.6,脱氢率,脱氢率计算,

37,脱氢率要求,H_removal_rate_req,设计值,≥0.5,,≥0.5,脱氢率要求,YB/T4405-2014,

38,脱氢率判断,,判断值,"IF(H_removal_rate≥0.5,""满足"",""不满足"")",,满足,验证脱氢率是否符合要求,设计要求,

四、CAS-OB成分微调炉设计计算,,,,,,,,,

39,吹氩强度,q_argon,设计值,0.03,m³/t·min,0.03,吹氩强度,设计任务书,

40,吹氩流量,Q_argon,计算值,V_ladle×q_argon,m³/min,3,吹氩流量,吹氩流量计算,

41,加热功率,P_heating_cas,设计值,500,kW,500,加热功率,设计任务书,

42,加热时间,t_heating,设计值,15,min,15,加热时间,设计任务书,

43,升温幅度,ΔT,计算值,P_heating_cas×t_heating×3600/(V_ladle×1000×c_steel),℃,32.1,升温幅度,升温幅度计算,

44,成分调整效率,η_composition,计算值,0.95,,0.95,成分调整效率,成分调整效率计算,

45,成分调整效率要求,η_composition_req,设计值,≥0.9,,≥0.9,成分调整效率要求,YB/T4406-2014,

46,成分调整效率判断,,判断值,"IF(η_composition≥0.9,""满足"",""不满足"")",,满足,验证成分调整效率是否符合要求,设计要求,

五、炉外精炼系统经济性计算,,,,,,,,,

47,LF钢包精炼炉投资,investment_lf,设计值,2000000,元,2000000,LF钢包精炼炉投资,投资预算,

48,RH真空精炼炉投资,investment_rh,设计值,5000000,元,5000000,RH真空精炼炉投资,投资预算,

49,VD真空脱气炉投资,investment_vd,设计值,3000000,元,3000000,VD真空脱气炉投资,投资预算,

50,CAS-OB成分微调炉投资,investment_cas,设计值,1500000,元,1500000,CAS-OB成分微调炉投资,投资预算,

51,总投资,investment_total,计算值,investment_lf+investment_rh+investment_vd+investment_cas,元,11500000,总投资,总投资计算,

52,年维护费用,cost_maintain_year,计算值,investment_total×0.05,元/年,575000,年维护费用,年维护费为投资的5%,

53,年运行费用,cost_operation_year,设计值,1000000,元/年,1000000,年运行费用,设计任务书,

54,年总费用,cost_total_year,计算值,cost_maintain_year+cost_operation_year,元/年,1575000,年总费用,年总费用计算,

55,年收益,income_year,设计值,3000000,元/年,3000000,年收益,设计任务书,

56,年净收益,income_net_year,计算值,income_year-cost_total_year,元/年,1425000,年净收益,年净收益计算,

57,投资回收期,payback_period,计算值,investment_total/income_net_year,年,8.1,投资回收期,投资回收期计算,

58,投资回收期要求,payback_period_req,设计值