Reactive Distillation Technology Used In Etherification Of FCC Light Gasoline

About 80%of the gas used in cars comes from the FCC light gasoline,which contains a high concentration of olefin,the concentration of olefin in FCC light gasoline is difficultly meet the standards which limits the proportion of olefin less than 35%in volume base,so,how to reduce the olefin concentration reasonably and at the same time not reduce the octane number of gas,is a important technology problem to be resolved.It is a effective way to realize the aim above to eherify FCC light gasoline by Reactive Distillation,Reactive Distillation is refered to one new chemical process which combines the reaction and the distillation.Compared to the traditional fix-bed technology,the Reactive Distillation technology has superiorities, so,the researchment of Reactive Distillation has important significance.Firstly,one key problem in reactive distillation-the catalytic packing has been studied.After knowing about the defects in current catalytic packing clearly,started from two different thinking,and at the end,invented new catalytic packing.Then,the experimental on fluid hydrodynamics has been done,and the result has proved that compared with current catalytic packings,the new one has several superiorities as: simpler making;bigger surface area;better flowing.Also,the new packing was adjustable at the catalyst amount and catalyst density,guaranteeing bigger bed-gap ratio and smaller pressure-drop at the same time,so to improve the production capacity of the column,and what is more,in the new packing,catalysts is more easy to fill in and out,more easy to do technological operation.Secondly,experimental on reacted distillation has been done using the new packing that has been invention,by that,the effects of feed location,reaction temperature,alcohol/olefin ratio and reflux ratio on conversion rate have been studied by that,and reasonable results are obtained by integrating theory with experiment,and at the same time,the catalytic-separation performance of the new packing has been tested.At last,the process simulation has been done used by simulation software-aspen plus.Compared the simulation data with the experimental data,showed that the simulation data and the experimental data anastomoses basically.So The validity of the model is verified and thus can provide guidance for further experimental and industrial scale-up.