The report studies the production of formaldehyde from methanol using a silver catalyst, and includes an overview of typical plant setup and operation, as well as sections on safety and troubleshoo...
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metanol tecnologia lurgi
Propylene production from methanolFull description
The report studies the production of formaldehyde from methanol using a silver catalyst, and includes an overview of typical plant setup and operation, as well as sections on safety and trou…Full description
Propylene production from methanolDescripción completa
Lurgi Methanol Process Saturday, February 19, 2011 11:30 PM
Operates at 2:1 2:!O "atio !an handle our pro#ect$s production production speci%cations& 'process can e(ceed 3,000,000 tons per year) Speci%cations: !atalyst : !uO'*0+0-)+ .nO'20+30-) /l2O3 '+ 1-)or !r2O3 '+1-) ep: ep: 220+3004! Pressure: +10 Mpa ypical ypical Feed Feed !oposition: 9 +5-2, 2+ 1- !O, !O, 6- !02, 3-!5 !on7ersion o8 !O to MeO per pass norally 1*+502:!O usually 2&1 Selecti7ity 99&6•
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Ma(iu con7ersion obtained at lo; and hi P he Lurgi MegaMethanol< MegaMethanol< technology has been de7eloped 8or ;orld+scale ethanol plants ;ith capacities greater than one illion etric tons per =ear =ear 'this is our ethanol process process here)& he ain process process 8eatures to achie7e these targets are: 1) O(ygen+blo;n natural gas re8oring, either in cobination ;ith stea re8oring, or as pure autotheral re8oring& 2);o+step ethanol synthesis in ;ater+ and gascooled reactors operating along the optiu reaction route& 3) d#ustent o8 syngas coposition by hydrogen recycle&
"eactor: >sotheral eat o8 reaction used to generate high pressure stea ;hich is used to dri7e the copressor& Optiu teperature pro%le in the reactor igh con7ersion Lo; catalyst 7olue Lo; ?as "ecycle @nergy @Acient • •
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Methanol reactor is a shell and tube heat e(changer ;ith %(ed tube sheets& ubular !atalyst in tubes and %(ed on a bed o8 inert aterial& >sotheral reactor First reactor achie7es partial con7ersion o8 the syngas at higher teperatures copared ;ith single+stage reactors Methanol+containing gas lea7es the %rst reactor, routed to the second reactor ;ithout cooling& >n the second reactor, cold 8eedgas 8or the %rst reactor is routed through tubes in countercurrent Bo; ;ith the reacting gas& his aCes the reaction teperature 7ariable and decreasing throughout the path o8 the second reactor and the teperature gradient is the eDuilibriu dri7ing 8orce 8or ethanol synthesis o7er the catalyst bed& Second reactor$s catalyst does not get poisoned as 8resh syn gas only enters the %rst reactor& !atalyst li8e E7irtually unliited&E "eaction control preser7es catalyst li8e in the %rst reactor&
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>8 ethanol yield decreases in the %rst reactor due to declining catalyst, the tep at the inlet o8 the second reactor ;ill increase to increase the reaction Cinetics in the second reactor thus increased yield& Methanol that results coes ;ith 2 and !5& http:;;;&lurgi&co;ebsite%leadinpd8sbrochuresGrHMegaMethanol&pd8