年产20万吨乙醛生产工艺设计

Process design for acetaldehyde production with an annualoutput of 200,000 tonsAbstractAcetaldehyde is a kind of important hydrocarbon derivatives,acetaldehyde productionmethods there are four,In organic synthesis,acetaldehyde is a dicarbon reagent and anelectrophilic reagent,which is regarded as the synthesizer of CH3CH(OH)and hasprotochirality.It condenses with three parts of formaldehyde to form pentaerythritolC(CH20H)4.In addition,acetaldehyde can be used to make acetic acid,ethanol,and ethylacetate.The pesticide DDT is synthesized from acetaldehyde.respectively is lawful,acetylene water ethanol oxidation,ethylene oxidation,direct oxidation of alkane.This paper mainly introduces various process methods and development prospects ofacetic anhydride rectification synthesis.At present,the main methods include acetaldehydeoxidation,ketene method and methyl acetate carbonylation method.Here,the specifictechnological process of ketene process is mainly discussed,and all parts of rectifying towerequipment are designed,and the materials and energy in this reaction process are calculated.The content and steps of distillation tower equipment design,and the calculation of towerequipment strength and stability.AutoCAD is used to design the chemical process flow andequipment,and to draw the layout of rectification tower and plant equipment.Keywords:Acetaldehyde;Material balance:Distillation