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安徽理工大学 化工原理课程设计
60?4055.965?40? ?B'?13.68mN/m
13.228?15.99?B'?15.99?m'??A'?B'12.18?13.68??13.22mN/m
?A'xB'??A'xA'12.18?(1?0.28)?13.68?0.284.4.混合物的粘度
t1 =40.485℃时
50?2540.485?25?.s ?A?7.15mpa7.37?6.80?A?6.8050?2540.485?25?.s ?B?6.88mpa7.10?6.54?B?6.54t2?55.965℃时
75?5055.965?50?.s ?A'?7.49mpa7.96?7.37?A'?7.3775?5056.3?50?7.66?7.10?B'?7.10 ?'?7.21mpa.s B?1?0.77?7.15?6.88?(1?0.77)?7.08mpa.s
?2?7.21?0.28?7.49?(1?0.28)?7.40mpa.s4.5.相对挥发度
tD =36.47℃时
40?36.136.47?36.1?o115.62?101.33PA?101.33 PA?95.93Kpa
040?36.136.47?36.10?o PB?32.48Kpa
37.26?31.98PB?31.98?1?PAPB00?2.953
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安徽理工大学 化工原理课程设计
tW=67.43℃时
68.7?6567.43?650'?o PA?264.20Kpa
273.26?246.89PA'?246.8968.7?6567.43?650' ?P?97.42KpaB101.33?89.96Po'?89.96B?1?PAPB0'0'?264.20?2.711 97.42???1?2?2.953?2.711?2.829
第5章 塔体工艺条件尺寸
5.1.气、液相体积流量计算
MV1?84.58kg/kmolML1?64.04kg/kmolMV2?99.36kg/kmol已知：ML2?61.44kg/kmol
?v1??Vm?3.54kg/m3
?v2??Vm'?4.23kg/m3?L1??LM?613.5kg/m3 ?L2??LM'?614.6kg/m3 精馏段：
L1?ML1L?64.04?105.45/3600?1.88Kg/sV1?MV1V?84.58?214.61/3600?5.04Kg/sLS1?VS1?L11.88?3.06*10?3m3/s613.55.04?1.42m3/s3.54?L1V1???V1
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安徽理工大学 化工原理课程设计
提馏段：
L2?ML2L'?61.44?287.71/3600?4.91Kg/sV2?MV2V'?99.36?214.61/3600?5.92Kg/sLS2?VS2?L24.91?8*10?3m3/s614.65.92?1.4m3/s4.23?L2V2???V2
5.2.塔径的初步设计
精馏段
??(0.6~0.8)??max,?max?C由
12?L??V,式中C可由史密斯关联图查出：?V
-312LS1??L1?3.06?10?613.5?????????0.0285??V?1.42?3.54?横坐标数值：S1?V1? 取板间距：HT?450mm,hL?60mm,则HT-hL?0.45?0.06?0.39m 查图可知
C20?0.080.2
0.2C?C20???20?????14.15??0.08????20??0.075
?max?C?L1??V1613.5?3.54?0.075?0.984m/s?V13.54
安全系数取0.8
?1?0.8?max?0.8?0.984?0.788m/s D1?4VS1??1?4?1.42?1.515m3.14?0.788
D1取整 D1=1.6m
AT??4D1?0.785?1.62?2.01m22
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安徽理工大学 化工原理课程设计
?1'?空塔气速：提馏段：
VS11.42??0.706m/sAT2.01
LS2??L2?8?10?614.6?????????0.0689??V?1.4?4.23?横坐标数值：S2?V2? 取板间距：HT?450mm,hL?60mm,则HT-hL?0.45?0.06?0.39m 查图可知
'12-312C20?0.0820.2
0.2??'?'C?C20??20?????13.25??0.082???20???0.076
?max'?C'?L2??V2614.6?4.23?0.076?0.913m/s?V24.23
安全系数取0.8
?2?0.8?max'?0.8?0.913?0.730m/s
D2?4VS2??2?4?1.4?1.56m3.14?0.730
D2取整 D2=1.6m
AT?'?4D2?0.785?1.62?2.01m22
?2'?空塔气速：
VS2AT'?1.4?0.700m/s2.015.3.溢流装置
（1）堰长取
lw
howlw?0.65D?0.65?1.6?1.04m出口堰高：本设计采用平直堰，堰上液高度
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按下式计算：