年产5万吨工业级甲醛的工艺设计甲醇的预热器的设计【完整版】(文档可以直接使用，也可根据实际需要修订后使用,可编辑放心下载）年产5万吨工业级甲醛的工艺设计—甲醇的预热器的设计摘要：甲醛是重要的化工产品。这篇文章主要介绍了甲醛的性质、用途、主要生产方法、市场前景及开展趋势；设计了年产5万吨工业级甲醛的生产工艺；选用铁钼法，以甲醇为原料，经甲醇预热、甲醇的蒸发、换热器、反响釜反响后得甲醛产品。本文主要承当甲醇预热器的设计，根据物料衡算及热量衡算结果，确定了预热器的工艺参数、类型及特征尺寸：公称直径250mm、公称面积9m2、管数20、管长6m；采用浮头式换热器，管束的排列方式采用正三角形排列，弓形折流挡板。并对换热器进行了流力学和热力学的核算.结果说明所设计的换热器符合要求。关键词：甲醛；工艺设计；预热器ProcessdesignofindustrialformaldehydeOf50,000tonsperyear—thedesignofHeatExchangerLixiaoping(DepartmentofChemistryandChemicalEngineering,BaojiUniversityofArtsandSciences,Baoji,Shaanxi,721013)Abstract:Formaldehydeisimportantchemicalproducts.Thisarticlemainlyintroducedtheformaldehydeproperties,applicationsandthemainproductionmethod,themarketprospectanddevelopmenttendency;Theannual5,000tonsofindustrialdesignformaldehydeproductioncraft;Chooseironmolybdenumlawtomethanolasrawmaterials,themethanolpreheating,methanolevaporation,heatexchangers,reactorreactiontoformaldehydeproducts.Thispapermainlyundertakesmethanolpreheaterdesign,accordingtothematerialcalculationandheatcalculationresultstodeterminethepreheaterparameters,typeandfeaturesizes:nominaldiameter9m2250mm,nominalarea,tubelengthnumber20,6m;UsingFuTouheatexchanger,bundlearrangementthepositivetriangleisarranged,bowbaffleplatens.Andtheflowofheatexchangeraccountingofmechanicalandthermodynamics.Resultsshowedthatthedesignmeetstherequirementsofheat.Keywords:formaldehyde;Processdesign;preheater目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc293322855"1.概述PAGEREF_Toc293322855\h1HYPERLINK\l"_Toc293322856"1.1性状及用途[1]PAGEREF_Toc293322856\h1HYPERLINK\l"_Toc293322857"1.2甲醛的生产工艺PAGEREF_Toc293322857\h1HYPERLINK\l"_Toc293322858"银催化法生产甲醛PAGEREF_Toc293322858\h2HYPERLINK\l"_Toc293322859"铁钼法生产甲醛PAGEREF_Toc293322859\h4HYPERLINK\l"_Toc293322860"其他方法PAGEREF_Toc293322860\h5HYPERLINK\l"_Toc293322861"1.3国内外生产概况PAGEREF_Toc293322861\h7HYPERLINK\l"_Toc293322862"1.4市场需求及开展前景PAGEREF_Toc293322862\h8HYPERLINK\l"_Toc293322864"2.原料、辅助原料