本文通过设计筛板式精馏塔达到分离丙酮-水二元混合物，需要满足年处理量70000吨。原料中丙酮含量80%，塔顶产品要求丙酮含量不低于99.5%，塔底丙酮含量不高于0.5%，常压操作，泡点进料。本次设计采用连续精馏过程，将原料液通过预热器加热至泡点后送入精馏塔内。该物系属于易分离混合物，采用塔釜直接蒸汽加热法。塔顶上升蒸汽采用全凝器，冷凝液在泡点下一部分回流至塔内，其余部分经产品冷却后送至储罐。本次设计结果为理论板数12块，实际板数25块，塔效率为44.0%，第17块板为进料板。在板式塔主要工艺尺寸的设计计算中得出塔径1.8米，全塔高度米。各项设计均通过流体力学验算满足设计要求。关键词：板式精馏塔；板式塔；丙酮-水；设计计算AbstractInthispaper,throughthedesignofplatedistillationcolumntoachieveseparationofacetone/watermixtureneedstwoyuan,theannualhandlingcapacityof70000tons.80%acetonecontentinrawmaterial,theproductrequirementsofacetonecontentofnotlessthan99.5%,thebottomofthetowerandacetonecontentofnotmorethan0.5%,normaloperation,thebubblepointfeed.Thedesignofacontinuousdistillationprocess,therawmaterialliquidthroughapreheaterafterheatedtosoakintothedistillationtower.Thesystemiseasytoseparatemixtures,thetowerkettledirectsteamheatingmethod.Theriseofthecondensersteam,condensatepointbacktothenextpartofthetower,therestpartofproductstothestoragetankaftercooling.Thedesignresultsoftheoreticalplatenumber12,theactualplatenumber25,columnefficiencywas44%,seventeenthboardsforthefeedplate.Inthedesignandcalculationofmainparametersofplatetowerinthetowerdiameterof1.8meters,thetowerheightof19.5meters.Thedesignoffluidmechanicscheckedthroughtomeetthedesignrequirements.Keywords:distillationcolumn;plate;acetone-water;designandcalculation目录TOC\o"1-4"\h\uHYPERLINK\l"_Toc31879"摘要PAGEREF_Toc31879IHYPERLINK\l"_Toc2103"AbstractPAGEREF_Toc2103IIHYPERLINK\l"_Toc15545"引言PAGEREF_Toc155451HYPERLINK\l"_Toc17328"第一章设计条件与任务PAGEREF_Toc173282HYPERLINK\l"_Toc32708"PAGEREF_Toc327082HYPERLINK\l"_Toc23884"PAGEREF_Toc238842HYPERLINK\l"_Toc16728"第二章设计方案的确定PAGEREF_Toc167283HYPERLINK\l"_Toc18807"PAGEREF_Toc188073HYPERLINK\l"_Toc21957"PAGEREF_Toc219573HYPERLINK\l"_Toc16009"PAGEREF_Toc160093HYPERLINK\l"_Toc10274"PAGEREF_Toc102743HYPERLINK\l"_Toc22745"PAGEREF_Toc227454HYPERLINK\l"_Toc12959"PAGEREF_Toc129594HYPERLINK\l"_Toc10