NaOH水溶液蒸发装置的设计.pdf

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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

2、的特点····················································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（

4、四）各效料夜的温度和有效总温差·································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

5、（一）计算各效溶液浓度···········································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················································

6、·········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·····································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·············

7、······································14(一)溶液的进出口················································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

8、离器·············································