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毕业设计题目：6万吨/年合成氨原料气脱硫工段设计学院：化学与材料工程学院专业：化学工程与工艺姓名：学号：指导老师：完成时间：2013/5/24河南城建学院本科毕业设计设计说明I设计说明硫化物在合成氨原料气中含量不高，但对生产却危害极大。本设计的任务是将合成氨原料气（半水煤气）中的硫含量由2.7g/m3脱降到0.046g/m3（0.04MPa,47℃）以下，设计采用模拟实验的方法。本设计通过工艺评选，采用综合经济效益高的栲胶法。栲胶法属湿法脱硫，半水煤气从脱硫塔底部进入，与自上面流下的栲胶液逆向接触，以吸收混合气中硫化物。脱硫后的半水煤气去变换工段，吸收了硫化物的富液去再生系统。本设计计算包括：对工艺的物料衡算、能量衡算、主塔设备填料塔的塔高塔径、填料的选取以及附属设备选型。由设计任务给出的半水煤气流量为20926.87m3/h基础数据计算出，栲胶液循环量为555.3m3/h，副产品硫产量为124.9kg/h，设计出的脱硫塔直径4m，高22.5m，阶梯环填料用量182.12m3；再生槽直径8.4m，再生槽高度7.0m。关键词：合成氨脱硫栲胶法工艺设计河南城建学院本科毕业设计设计说明IIDesignelucidationSulfideinthefeedgasintheammoniacontentisnothigh,butproductionisextremelyharmful.Thetaskistodesigntherawmaterialammoniagas(semi-watergas)inthesulfurcontentfrom2g/m3droppedfrom0.1g/m3(1.46MPa,40℃)below,designasimulationmethod.China'scurrentwater-gasdesulfurizationforthesemi-mainextractofthelaw,improvingtheADAlaw,bylaw,suchasliquidammonia,throughthedesignselectionprocess,acomprehensiveeconomicbenefitsofhighextract.Extractofawetdesulfurization,semi-watergasdesulfurizationtowerfromthebottomofentry,anddownfromabovetheliquidextractreverse,withamixtureofsulfidesinabsorption.Desulfurizationafterthesemi-watergastotransformSection,theabsorptionofthesulfide-richliquidtotheregenerationsystem.Thisdesigncalculationinclude:materialscalculation,energycalculation,themaintowerequipmentprocesscalculationandancillaryequipmentcalculation.Fromdesigndatacalculatedbased,semi-watergasflowto20926.87m3/h,toextractliquidcycleof555.3m3/h,sulfurby-productproductionof124.9kg/h,designedtodesulfurizerdiameter4.0m,high22.5m,RasiCentralfilleramountof182.12m3。Regenerationtankdiameter8.4m,regeneratedslotheight7.0m..Keywords：ProductionofAmmonlaDesulfurizationExtractLawProcessDesign河南城建学院本科毕业设计目录i目录设计说明...............................................................IDesignelucidation....................................................II主要符号一览表.......................................................iii引言.................................................................11脱硫工艺评选.........................................................31.1国内当前常用脱硫工艺..........................................31.1.1氨水液相催化法..........................................31.1.2改良ADA法..............................................41.1.3栲胶脱硫工艺............................................51.1.4FD法脱硫................................................61.1.5PDS法脱硫...............................................71.1.6KCA法脱硫...............................................81.2脱硫工艺评选..................................................91.2.1工艺评选................................................91.2.2工艺确定...............................................121.3栲胶脱硫工艺条件确定.........................................131.3.1栲胶溶液的预处理.......................................131.3.2温度...................................................131.3.3压力...................................................131.3.4溶液因素...............................................142工艺计算............................................................162.1物料衡算.....................................................162.1.1H2S脱除量................................................172.1.2溶液循环量.............................................172.1.3生成Na2S2O3消耗的H2S.................................172.1.4Na2S2O3生成量..........................................172.1.5理论硫回收量...........................................182.1.6理论硫回收率...........................................182.1.7生成Na2S2O3消耗的纯碱量...............................182.1.8硫泡沫生成量...........................................182.1.9入熔硫釜硫膏量.........................................182.2能量衡算.....................................................192.2.1脱硫塔热量衡算（按1mol硫化氢计算）....................192.2.2冷却塔热量衡算.........................................202.2.3硫泡沫槽热量衡算......................................202.2.4熔硫釜热量衡算........................................212.3脱硫塔工艺计算...............................................22河南城建学院本科毕业设计目录ii2.4压降的计算....................................................242.5附属设备的计算.................................................262.5.1塔的附属高度的计算.......................................262.5.2喷射再生槽工艺计算.......................................272.5.3喷嘴计算.................................................272.5.4混合管计算..............................................282.5.5吸气室计算...............................................282.5.6尾管直径计算De..........................................293填料塔辅助设备的选择................................................303.1液体分布装置...................................................303.2喷淋器的选择...................................................303.3填料支承板.....................................................313.4液体再分布器.................................................313.5床层限制板....................................................323.6气、液相进出口装置.............................................323.6.1气体进口装置.............................................323.6.2气体出口装置.............................................323.6.3液体进口管...............................................323.6.4液体的出口装置......................................