Chemical Industry pdf, 3.7 MB - GEA Westfalia Separator

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Chemical Industry pdf, 3.7 MB - GEA Westfalia Separator

With its aggressive media, the nitration process posesextremely stringent demands on the separator designin the nitration stages. A challenge that GEA WestfaliaSeparator has successfully mastered: from the bowland all other components that come into contact withproduct right through to the smallest seal, everythinghas been consistently designed for this process.The problem is particularly acute when processingnitrated toluene or xylene from the waste acid; specialmaterial (Incoloy 825) is used in virtually all caseswhere the components come into contact withproduct. And with liquid centripetal pumps for bothphases, the separators meet the requirement forsafely discharging both the acid and the organic phaseunder pressure.Another popular benefit of the TTC separators isthe location of the discharge drain hole in the bottomof the bowl. This prevents the operator or servicefrom coming into contact with the extremelytoxic organic substances. Throughout the world,virtually all well-known manufacturers of nitroaromatic compounds use separators supplied byGEA Westfalia Separator – and most of them havebeen doing so for many decades. There are specificreasons why GEA Westfalia Separator has continuedto be the main supplier for this application. Thenew TTC generation continues this story of successby meeting the customers’ need for higher feedcapacities, increasingly strict installation requirementsand operator safety.Mixture of nitric acid and sulfuric acidAromaticAcid forrecirculationH 2OsteamH 2OsteamClarification ofFe sulphate fromsulfuric acidTKC 100-86-576Reactor formononitrationReactor fordinitrationExhaused acid torecovery station(H 2SO 4 + H 2O + organics)≈ 1.3TTC 150-01-517≈ 1.8CondensateTTC 150-01-517RecoverystationWash waterCaustic soda solutionWash waterDinitratedaromaticWashwaterCondensate1 st washing stepSour water2 nd washing stepAlcaline water3 rd washing stepTTC 150-01-517Dryer5GEA Westfalia Separator

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