Page 194 - Pressure Swing Adsorption

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Table 5.1 (Continued)
Mr,.S'l
Approximlltinn,,~ mmskr Hcat Numericail
Operating f-luidflov.· (prcs.surizalinn and Equilibrium mood effect< method
E,q,crimcnia/ cyde" Model~ dcprer..~urr.ca1ionl isoihenn
Authors sys1cm Sclec1lvit)' Full solution Loading Bidispern:: pore Heat b~lance Finite
Doong and Separation of Equilibrium One-bed, Plug fluw, allowing for ratio diffusion model included difkrencc;
p11rabolic
velocity ;·aries
modified
Yans 11 HiJCH~ eontrnlled; cycle with along Lh<e column mass transfer corrdation concentration
mb:turc for CH~b between fluid profile assumed
high purily H2 mor= strongly coc:11rrcnl and solid in both
dcpressuri.:a1ion
produeiion on adsorl:>cd crystals and
SA zeo!iie countercurrenz pd!cts
blowdown
(followed by
H2 purge};
H2 used for
product end
pn:ssurfaation Alial disper.ed Froz.en solid Binary lDF,_cycle Lime Isothermal Orthogonal
collocation
Has,;an. Air scparmion Kinetically Modified plug flow. approx1mn(ion Langmuir dependent n;
cyde with
controlled;
micropore
Ragliav.,n. and for 1'< 2 produczion pr=te ,,.elocilyvaries and square isothenn control
Ruthven 1 H on a c;,rhon oxygen in equalization along !he column wave change in
the f:ister
.._, molecular sieve romponent and no column pren!aurc
:::, cxtemsl purge Axial dispersed Fro.:en solid Langmuir LDF,n - 15; Heat balance Orthogonal
collocation
Farooq, Puri/i.c:ltion of Squmhrium Skarstrom plug flow. approxima1ion isotherm molecular im::ludcd
cycle
Hassan, and He by removing con1rol!ed; con~ant '<C'loeity and sq11arc diffusion
eontrol
Ruth~cn 1 q trace C2H~ on C:H~ is along the column wa'<C' change in
SA zeoliu: strongly column pressure Orthogonal
adwrbed Axial di~pcn;,:d Full solution Linear Poro model Isothermal collocation
Shin and Air ,..,par:ation Kinetically Single bed, p!ug f!OW. a!lo,,o,ing for [micropore
211 co111rollcd; Sk:arstrom dif(usion);
Knsehe! for N2 ..-e!oeily varies IITTIS$ transfer
production 0:ey8en is cycle with alonf' the bc\wc,en fluid eon~tsn!
on a RS,.IO the foster purge from column and solid diffusJ,,icy lsolhennal Finite
moleailar ~[ev,: component product tank Plug flow, Full ~ution Binary LDF. cycle difference
Kapoor and Separation of Kinetically One-bed, veloeity varies allowing for Langmuir lime
dependent n:
modified
Ynngl 1 CH•/C02 mixture controlled: CO2 a!ong the column; mass lransfer isothenn
imo two useful is lhe faster cycle with column pn:ssure b<,tween fluid micropon:
producLs on a component cocurrent chanics in all and wlid C<'nlrol
.,,.man molecular depre5s11riza.tion the 5lCpS
sieve co11ntcrcurren!
blowdown and
coun!<>r<:urrcnt
cva<:u111!on (Continued)
i,,;,t,: .. ,0.-,g~/4,!!i:"i:'l),,C ·-·· .,, .. ,., ·'"·•··· " ----=-----··•··-·•-.-••·· '•··--·---··•········-- -----··--••M•--·-·-·· -·----·····•·, .)
I able 5 .. 1 (Continued)
Appru~imations Mas.
Experimental O!'<'raling Fluid flow (prcssuriution ~nd Equi!ihrium tran~fer He.:it NumuricQI
Authors system Selectivity cycle~ Mcx.!d' depre;,ssurizatiunl isotherm m<J<lcl <>fT~ts mcthud
Farooq, Air s,:paratiun Equilibrium Skarstrom Axial dispersed Full solution Binary l.DF, !l - I~; fsutht·rmal Or(hogon;,1
Ruthwn. aod forO2 produnion controlled; N2 cycle pl118 11,,,.. alk,wing for Langmuir m,,k,ul;,r etllluc:iunn
Bonifaee 22 un SA z<"nlitc is murc stronBly vclncity ~arics mas; trnn,fcr isotherm ditlu~ion n,ntrnl
acls.:,rhcd al!1ng th• column under lineurly
changing
pressure
Uow and Air separatkm Equilibrium Backfill cyde A>.ial dispersed Full ~olutinn Idea! LDF fs<11hcr<1tal Orthogonal
Kennuy 23 for O 2 pmdu,'lion mntru!led; N2 plug fl""'· ~!lowing for adsorbed ,.,.,lloc,nio"
(In SA li><'H\,• is more strongly vcl0<iti-varies ma~s 1rnnsfor solutiun
ad.surhed along 1hc C<>lumn theory
Ackley and Sepamtiun .,r Kin.-1ically Modiric<.l cyde Plug flow Fn,~cn snlid Bimiry 1.DF. il · !5; b,Hhcrm~I Method of
Yangl4 NiiCH• mi.\ture rontrolled; (one .. hed) wi1h vdndt)· -,,rics appm~imalinn and Langmuir mi,'WP<lf< d1~n,c1cri~u.,
on ~ 1>11rlx>n nitrogen is th<: cvaruation al<lng th,· C(llumn >Quarc """'-' isothermal control
n1',Jecu!"r ~i<'-c faster comp,,nenl rcplacrng :banic in
- .._, for upg,,.ding blc,wduwn ,·.,lumn prc,,urc
- natural gQ~ and .purge Fr.1;c n -~•lid
Riller 3ntJ
Yang 25 Purifamiun nf Equilibrium One.hed Plug fin". "pproximati"n ,md l.:tn)l"rnhcrm LDF; ra1c ,:,11,st:int \smh,rm,l Finite
diflc,cmc
isulhcrmul
"hrnined
,»nstnnt
mntmllcd:
J.ir b)· rcni.win~
proce.""
trnce dimc•th~l DMMPis Skarstrom n:k>,CU)' .. 1,,ng <qum,· wave h~ 1init111"
methyl ph,:,,pbJ1e very ~tronclr cycle using the ,·<>lumn ,·h;,n)i"<' in ih, r>miti from
on anh•a1~ol ud,mrhcd 11ncon1amln~1..-d :,,,!unm prc.s.,urc "run o.·1th
,·arbun air ~spurge ~as ,i)l"nilkun1
hrcaklhwugh
farooq and Air ~,par111io11 Kinc1iwl!~ Modified ,-yclt A,;iuldi~pcrs.:d Full «,Ju1ion Binmy l'i>re mudd ls,11h,1n1;,I Or\!1'1g<mlll
Ruthwn 2 b for Ni pm.!U<'ll<ln ,·on1rullcd: wi1h pres,urc r,lug tl<m nH><lcl .1!1owi!lg fnr 1..,mgmuir lJ11>Cr"pt~rt colJoc;oti, n
on·acart>on llXYl:C'n is cquu!fzatkiil i:-Cl<><'ilj,1iirl6 mii.i..Sii-:i0,lCr iSnthcrm di!tu,!nnl;
n,olec-ulnr,ie.-e the Caster and no purge uloug 1h,· ,"t,lumn l'o.:Lwe,·n fluid variahlc
eumpnn<:m .111d s<'lid diffuq,•il)
ta square, wm·c
,hang,· in
pr, .... ,urc•l
• TwO hcd proce'-' unless ntb 0 n,;,., ,\.1kd
h All lht mode!• :1s<,.1me nci:!igit k in,u,,nal pr<ssure drop Tnrnl c<>lumn r,rcssurc 1< nrn,n, ., n• 1 •m du tut~ t»i:h r,t<•ssurc 1<.c<i ;1ml dc,mr,1inn ,iep, unk '-' <1lh:rwN' ,1:,ie,J T, •""um ,. •·• ,ha!lgmg :,•h1m<1
r,rc>,un: ur,l,::;ss ~ny «mpli!ic·a1i<,t1 i~ u,.11,. atc•J tht ,-·1u~l pre~~ure -lime his!""" Cur 1<ppr<,11riu1< lx·,t lit 11<1<rn1>,,nl "'" u-.:d