年产10万吨硫磺制酸转化工艺计算书

#100kt/a硫磺制酸转化工艺计算书、基本条件：气体成分与气量：①进转化气体成份：SO9.0%；O8.1%；N82.9%222②进转化气量：33300Nm3/h转化率与进口温度段IIIIII转化率（％）62809299.6进口温度（°C）430480440420二、物料衡算：（33300/22.4=1486.6）一段进kmolKg三段出kmolKgSO2133.88562.5SO210.7685.1O2120.43853.4SO3123.19847.7N21232.434506.9O258.91884.8N21232.434506.91486.646922.8E1425.146924.5一段出kmolKg四段进kmolKgSO250.83254.0SO210.7685.1SO383.06636.5O258.91884.8O278.92524.8N21232.434506.9N21232.434506.9E1445.146922.2E1302.037076.8二段出kmolKg四段出kmolKgSO226.81715.2SO20.53534.25SO3107.08563.2SO310.16813.18O266.92140.8O253.821722.24N21232.434506.9N21232.434506.9E1433.146926.1E1296.937076.6右左c081吸一去I右左C081吸一Oo三、热量衡算：段数气体进口反应热kcal/h气体出口温度C热容kcal/hC热量kcal/h温度C热容kcal/hC热量kcal/h—一43011109.54777094.41865737.9583.411385.76642832.2二48011385.75465136.0539778.0530.6611316.06004914.0三44011316.04979040.0363793.2475.2711241.65342833.1四4209302.93907218.0218152.5442.59322.24125370.4注：lkcal=4.1868kJ(一)一段反应热量和出口温度1、进一段：SO133.8X10.96=1466.45kcal2O120.47X7.407=891.8kcal2N1232.4X7.101=8751.27kcal2E11109.5kcal/h°CQ=11109.54X430=4777094.4kcal/h1入2、出一段：SO50.81X1.31=574.55kcal2SO83.01X6.025=1330.08kcal3O78.97X7.547=595.46kcal2N1232.4X7.21=8885.60kcal2E11385.7预计反应后温度：t=430+0.62X252=586.2t=(430+586.2)/2=508.1m反应热：Q=24205-2.21X(273+508.1)=22478.77平均

总反应热：Q=83.0X22478.77=1865737.9.反一段出口温度：t=（Q+Q）/出口气体平均热容出1入反=（4777094.4+1865737.9）/11385.7=583.4°C出一段气体带出的热量：Q=11385.7X583.4=6642832.2kcal1出（二）二段反应热和出口温度：1、进入二段气体带入热量：进二段气体温度480C，进二段气体每升高1C需热量与一段出口基本相当，即：11385.7Q=480X11385.7=5465136.0kcal2入2、反应热：预计反应后的温度：t=480+(0.8-0.62)X252=525.36Ct=(480+525.36)/2=502.68mQ平Q平=24205-2.21X(273+502.68)=22490.750?反=(107.0-83.0)X22490.75=539778kcalT=(5465136+539778)/11316=530.662出3、三段带出热量：热容：SO26.8X11.174=299.5kcal2SO107.0X15.725=1682.6kcal3O66.9X7.493=501.3kcal2N1232.4X7.167=8832.6kcal2E11316Q=530.66X11316=6004914kcal2出三)三段反应热和出口温度：1、三段气体进口温度440°C,热容与二段出口相当。即：11316Q=440X11316=4979040.0kcal3入2、反应热：预计反应后温度：t=440+(0.92-0.80)X252=470.24Ct=(440+470.24)/2=455.12CmQ=24205-2.21X(273+455.12)=22595.85kcal平均Q=(123.1-107)X22595.85=363793.2kcal3反出三段气体的热容：SO10.7X11.05=118.2kcal2SO123.1X15.42=1898.2kcal3O58.9X7.44=438.2kcal2N1232.4X7.13=8787.0kcal2E11241.6三段出口温度：T=(4979040+363793.2)/11241.6=475.273出Q=475.27X11241.6=5342833.13出四)四段反应热和出口温度：1、进四段气体温度420C进四段气体热容：SO10.7X10.94=117.06kcal2O58.9X7.40=435.8kcal2N1232.4X7.10=8750.0kcal2E9302.9Q=420X9302.9=39072184入预计温度：t=420+(0.992-0.92)X252=438.14Ct=(420+438.14)/2=429.07CmQ平均=2反)05-2.21X(273+429.07)=22653.43kcalQ=9.63X22653.43=218152.5kcal4反t=(3907218+218152.5)/9322.2=442.5°C4出四段出口气体热容：SO0.535X10.98=5.87kcal2SO10.16X15.24=154.83kcal3O53.82X7.42=399.34kcal2N1232.4X7.11=8762.36kcal2E9322.2Q=442.5X9322.2=4125370.44出四、换热量的计算1、II换：换热量：Qj(525-443)X11316.0=927912kcal927912=(423-X)X9302.9X=423-99.7=323.3CSO525-4433SO423-3232△t102120△t=(102+120)/2=111CmF=Q/K△t=927912/(20X111)=418m2m2、W换:Q=(327-60)X9302.9=2483874.3kcal换2483874.3二(438-X)X9322.2X=438-266.4=171.6°CSO438-171.63SO327-602△t111111.6△t=(111+111.