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1、. 目录一、设计题目1二、设计依据1三、 设计要求1第1节：物料衡算、热量衡算11.精馏塔物料衡算12.冷凝器物料衡算及热量衡算63.产品冷却器物料衡算及热量衡算84.原料预热器（1）的物料衡算及热量衡算95.原料预热器（2）的物料衡算及热量衡算106.再沸器的物料衡算及热量衡算117.物料衡算汇总表128.热量衡算及换热器要求汇总表13第2节：列管式换热器选型及校核（原料预热器）151.初选原料预热器（1）规格152.核算总传热系数21第3节：所选固定管板式换热器的结构说明231.管程结构232.壳体结构243.其他主要附件24第4节：换热器的主要结构和计算结果25第5节：参考文献及资料26
2、附27精品.设计任务书一、 设计题目：乙醇水精馏系统换热器设计二、 设计依据： 1、产量：7万吨 2、年工作时间：330天 3、原料乙醇：浓度50%（质量），出库温度25 4、产品乙醇：浓度95%（质量），入库温度45 5、乙醇回收率：99.5%6、原料乙醇泡点进料，回流比R=1.15Rmin 7、循环冷却水进口温度：30 8、再沸器饱和水蒸气温度：150 9、系统散热损失：不考虑系统散热损失 10、换热器KA值裕度：2040% 11、原料预热器（2）设计三、 设计要求：第1节：物料衡算、热量衡算1.精馏塔物料衡算乙醇、水的相对分子质量为M乙醇=46.07g/mol，M水=18.02g/mol
3、由原料乙醇质量浓度为50%得原料乙醇的摩尔分率为：精品.由产品乙醇质量浓度为95%得产品乙醇的摩尔分率为：原料F、塔顶馏出液D的平均相对分子质量：塔顶产品流率D：由乙醇回收率得：精品. 流率W：塔底残液摩尔分率：塔底残液W的平均相对分子质量：计算Rmin精品.乙醇-水气液平衡数据P(kPa)T()XY101.325100.017700101.32594.808570.0204080.187889101.32591.457910.0408160.295516101.32589.131880.0612240.365032101.32587.445820.0816330.413396101.3258
4、6.174730.1020410.448925101.32585.192160.1224490.476089101.32584.415180.1428570.497555101.32583.78810.1632650.515008101.32583.272240.1836740.529566101.32582.839990.2040820.542004101.32582.471220.224490.552871101.32582.151070.2448980.562574101.32581.868420.2653060.571414101.32581.614870.2857140.579625
5、101.32581.384050.3061220.587387101.32581.171150.3265310.594843101.32580.972470.3469390.602108101.32580.785250.3673470.609275101.32580.607390.3877550.616421101.32580.437340.4081630.62361101.32580.273950.4285710.630897101.32580.116440.448980.638329101.32579.964250.4693880.645945101.32579.817050.489796
6、0.653783101.32579.674650.5102040.661873101.32579.5370.5306120.670245101.32579.404160.551020.678926101.32579.276250.5714290.687942101.32579.153470.5918370.697317101.32579.036060.6122450.707074101.32578.922230.6326530.717273101.32578.816680.6530610.727858101.32578.717420.6734690.738896101.32578.624790
7、.6938780.750411101.32578.539170.7142860.762426101.32578.460950.7346940.774966101.32578.390520.7551020.788058101.32578.32830.775510.80173精品.101.32578.27470.7959180.816009101.32578.230130.8163270.830926101.32578.195040.8367350.846514101.32578.169870.8571430.862807101.32578.155050.8775510.879841101.32578.151050.8979590.897655101.32578.158340.9183670.916291101.32578.177390.9387760.935794101.32578.20870
