Page 193 - Pressure Swing Adsorption

Table 5 1 (Continued)
Mas.s
Approxim"11on> Equilihrium trnn~fcr !kat )'.lumcrlcal
Exp!,!rimc:mal Operating Fluid no.,, (prc~""rization am! isulhcrm model clfoet< mcthm.l
dcprcs~uriz"tinnl
Authors system Scl,;,;Livily cycle" Model" Loading Pon,: motlcl Hco,\ hatanc:c FinitC
Yang and Separation of Equilibrium Onc-he<l. Plu~ flow. Full solution ratio {macropurc included difkrcncc:
alfowing for
velocity v,rtics
paralmlic
Doongg H;/CH 4 mixture controlled; mmJilicd along !he m..is..s transfer i:crrdation diffusion): pore contcmra1ion
into two useful CH~ is cycle wilh hctwccn fiuid dilTuslon
productJ on preferentially cocurrcn\ column; and solid uniml)Onanl profile assumed
eo!umn pressure
act<Yatcd carbon adsorbed dcpTC"-SllriZalion {eomparsion with within a
,:ountcrcurrenl chaos<'-~ in all cquilibruim particle
blowdown the steps model)
(followed hy
H2 purge) FroZC'!'lwlid Langmuir LDF. 0 • 15: Isothermal Ortho~,:mal
Hassan, Purification of Equilibrium Skamrom Axial dispc~d appro,jmation i.-othcrm micro;,orc colhlClllion
pl11g !iow.
cycle
Ragha.,an. He by removing con1rollcd; conS1.11nt vc!oci1y and ,;q=rc contrnl in 4A:
Ruthven and ti:11<:e C2H, on c,H4 I~ along the column ,..,......,_ change molc.:ular
Bonifacc 10 4A and5A strongly ,n rolurnn diffusion
con1tol in $A
ieolitcs aclwrbed pre!e~ure Linear L.DF. tl,. 1$; r..,,,thermal Double
~ppn,xim .. 1ion
~ Raghavan and Air separation Kinetically Skai;trom Axial disp,:,=d Fro.xn ,olid m,crup<>rC oi1kx:,uion
plugflm,-.
cycle
control
controlled;
11
Ruthven for N 2 pro,duction vcloeitr vari,::; and square
on carbon oxygen is !he wave change
molecular sieve fo~tcr a!ong the rolumn in column
compOllC!ll
pres.~un: Loading Pore mo<lcl Heat balance Finite
aU..,..,ing for
Doons and Separation of Equilibrium One•bcd, Plug flow. Fun wlu1ion r.itin accounting included dilkrene"';
vclodly varies
parnbolic
Yang 11 HifCH,/COi controlli:d with modified ma<,; transfer correlation for sutfaee
nuxture imci equilibrium cycle with along the column h<:tl>CCCI nuid and IAS and Knudsen oonccntrnti,in
profile as.sum~d
three u,,:ful affinity cocurrcnl and solid th<.'Ory: di!fusiun
products on CO2> deprc~•uriu:1i11n PSA resul\s within u
activated carbon CH4 > H2 countcrcurrcnt using these particle
blowdown
di/Tctcnt
(followed b~ mlldcl.s
H;_ purge);
were clo,;c
Hi used for
product end
pn:-uuri.tation (Continued)
...
;~" -~ --.... ---·-.... --.--... ·-----~---·-----··--··•""--"---······•······----··-··-····
I able 5 1 (Continued)
Appro,immions Mas.s
Exp,crimenuil Operating Fluid flow (pn:ssuri,::,tiun and Equilibrfum transfer Heat Nuin~rirnl
Authors system Sclectivily cycle" Mode!h 1,kpr.:,a;uriwtion) iso(hcrm mmk! effects method
Hassan. Air scparnlion Kinetically Skars1rom Axiu! disp,,,rscd Fm,cn solid Binary L DF. cydc time ls"thcrm"I Oohu~nnal
Ruthvdn, and for N~ production COnlrO!led; cycle plug nov., apprt,xinll1lion Langmuir dependent 11; cul\,,ca,i"n
R.igh11van 1 J on a cnbon o~ygcn ii the vcllldty,·aricl ,1nd S<juare isn!hcr miempnrc
molecular si~•·e faswr alllng the column "11'-C change in cnntrnl
cnmpe,ncnt n11umn prcs.,urc
Ragha.,.~n Drying of air on EQuiWirium Slrnr.,1rnm Axial dispnso-J Fml(,;n snlid l.•mgmuir Pon· model !so1hcrm~I Or\h,,gon·,1
Has.san. and activated alun,ina comm-lied; cycle plug Bow. ,1ppro'.'<ima1ion i,;,nhcrm lm11cm1><><c coll<>c,ui,,n
Ruthvcn 14 (lheoretica! moi~urc is eunst~nl vdodtr ;on,J square diffusion);
study with st,·oni;ly along the C"t>lumn v. a,·e change cumpur.:d with
phy,,kal adsorbed in column I.DFm,idd fnr
parnmetcrs (,.,m prc-,;surc <~>rrcla1111rn <>f
R~f 4) 1l vs cycle
umc·
( en and Scpara1ing H~, CO Equilibrium One hc<l Plug llow Full -.,lu!lor, t,rntling ! DFmodd H-,a t>·.,l,1m·<· Finii,·
Yallgl! mi,turc in1<1 tv.·<1 con1r11llcd modified velocity varic~ .,lf.,wing l<>r r:um ll - l;'i; .,,.l.,dcd Jilfon·nn
useful P"'ducu CO is L')'de wilh ulong the r"lumn m.o ... , 1rnnsr,r '-"rr<.l;o!inn dilfu,iu,,..I
tln a,·tivaled prdercntiall1· rnrnrrcnl column pres.,urc 1>c,1wcc·n nuid lime· n>nsiant
earhun sdsorhcd deprc~suri.:miun remains cl\n<unt ~ntl ,nlid ohtainctl hy
cuumcrcurrcnt Ju ring hi~h lhtin!!
hlowdnwn prc~surc J<'cd c.~pNimc ntal
(f<,llwcd hy step nnl)' daUL
Hi purg~);
Hi used for
pro-duct en,\
prcssurizmion
Sli'in 11iul Afr <C['i'iii~li(;n Kiii.etlCtinj, Skars1rmTl Axial disp,,t,;.cd Full solu!ion Linear Pure m<1dd !so1h,·{mal Orthugon:ol
Knuchc1 1 ~ for N" prod .. cti<ln controlled: cycle plug t\ow a!l<>wing for lmicwp,1rc , ... ,11 ... , .... "'
on 4A ,c.,!it<· o~ygcn is ~d<>~ity •·ni« n"'-" ,rnn.sfcr Jifl'u,i\!nl;
(<h,;,,rctkal the fos1<:r ,,lnog th~ c~>lumn un,lcr linc"rl)· rnn~tunt
srnJy) eompr.m,;n\ l'hanging Jil[usivi11·
1>1cs..,un•
(Cv,Himlf'd)