NaOH水溶液蒸发装置的设计

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1、目录符号说明······································································2第一节概述··································································3一、蒸发及蒸发流程····················································3二、蒸发操作的分类····················································4三、蒸发操作的特点·····

2、···············································4四、蒸发设备··························································4五、蒸发器选型························································5第二节工艺流程草图···························································5第三节三效蒸发器得工艺计算····························

3、······················5一、估计各效蒸发量和完成液浓度·······································5二、估计各效溶液的沸点和有效总温差···································6（一）各效由于溶液的蒸汽压下降所引起的温度差损失/···············6（二）各效由于溶液静压强所因引起的温度差损失···················7（三）流体阻力产生压降所引起的温度差损失······················8（四）各效料夜的温度和有效总温差··············

4、···················8三、加热蒸汽消耗量和各效蒸发水量的计算·······························8四、蒸发器的传热面积的估算···········································9五、有效温差的再分配·················································10六、重复上述计算步骤·················································10（一）计算各效溶液浓度··························

5、·················10（二）计算各效溶液沸点···········································10（三）各效焓衡算·················································11（四）蒸发器传热面积的计算·······································12七、计算结果·························································12第四节蒸发器的主要结构尺寸计算一、加热管的选择和管数的初步估计···

6、··································12二、循环管的选择·····················································13三、加热室直径及加热管数目的确定·····································13四、分离室直径与高度的确定···········································13五、接管尺寸的确定···················································14(一)溶液的进出口····

7、············································14（二）加热蒸气进口与二次蒸汽出口································14（三）冷凝水出口·················································14第五节蒸发装置的辅助设备····················································14一、气液分离器··················································