distillation-1

distillation-1 - 11.4—1. Disriiinrioa Using...

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Unformatted text preview: 11.4—1. Disriiinrioa Using McCabe—Tirieie Method. A rectification oolumn is fed 100 kg moi/h of a mixture of 50 me] “A: benzene and 50 mol “H: toluene at 101.32 kPa abs pressure. The feed is liquid at the boiling point. The distillate is to contain 910 mol % benzene and the bottoms 10 mol % benzene. The reflux ratio is 4.52 : 1. Calculate the kg moi/h distillate, kg mol/h bottoms. and the number of theor- etical trays needed using the McCabe-Thiele method. Ans. D = 50 kg moi/h, W = 50 kg mol/h, 4.9 theoretical trays plus reboiler H-‘i—3 Rm:? Mn! :1 EL I: = D +UJ \oo = [bl-L0 ....© cit-m?» FXF = DXD 4-.wa (30°) ('3) 7: DC?) +00 '60 = ~90 + -1 Lo * *thortha N L9 r: 1“? = 1 163 :D RJMLV“ {2+1 1+ 51 ’H ' - - "'~ X. __._ i? i Q PlheL poch :5 lama-1% =.LrJ-_-_ E3; -m% :5 Rh: *fi/na: Q+rdmikw_ .I- ill-I... .IulflflI.I1.. _II.. JIIr... I. _l. I.r1 . .. . . I... .. _I . ...iHJ..........Iu.._.-2:43.; ....--Iil: n. . ..n . . ....I..q .. +.-“... I I. _ I. . I . . ..Il .LLJI .. ..th u. .. .u I I .. . . --. I". __. _u . _ ..I _ ..I q I . I- . . .. ... .. . . u _ ...I . . I . . . .. I ....I. u a. II : . II . I. "n H. _ . ... . . I. L... ._ _ _ _ "T. . I. .....L....... I . I I . mum ..... _ I a _.u . I. . p." _ . 4" n . .. ...... u . . _. . ‘u . h . . I. .. . . . ..lu.1._.—..II.I|I.II.I.I .u... .I_.m .... I .W._q. _ ...I . ..I . Ill|.| .l. . . ... I . I+. . I. I .I. I. .|_. . . .I.--I....._uI....-... ...I I... 113 T. --.I. I." - . . . ..I: I . I . . . I .— . . u. .... . . ...._._. .. . .....I .. . ... . . . fini- ' . __. I5th . 11__.__._ . _. ..I. .. A H. . . . w... ..I... . .. . ... _.I_.... .. . “.....Ec. _- mu.-.” "...... ... ._..-m. . II _. .. ..I‘HIIMIUI-u. . I .122. / LILY: H n ..n ... fume". .. __ _r ......m...:.. . “$.52... . ..5 ...I I -...I..:I”.. .. . ...... _. . .. . ma am. ...... ......h....I..H.....I_I.I_.H.L.. . fl mwmmwnhnhexfi . ...... II “riahtnfiiI . -- .“.I . . I. . I... ..H... H: U...“ . N4. __. ..I.._mu_..I._ .-.I. . . .-....IT ..n........:._I-I.- . . . .- an .. .... ....u-.H ._ u .. ...“ -- ..- ..... ....” u. . . . .. .. .t. n .. . ... ...... .......-U.............- H._.. . “a. . . .. . h... . u...... . . .. n. I... . __.... I _ m...— I . -.n... T H - um _III... . _ . . H“. p C 11.4-5. Rectification Using a Partially Vaporizer! Feed. A tutal feed ul' 200 marl/h having an overall enmpesitien ef 42 me] “it: heptane and 58 met “A. ethyl benzene is to be fraetinnated at 101.3 kPa pressure tn give a distillate euntaining 97 me! as. heptane and a bottnms euntaining Ll me! % heptane. The feed enters the tuwer partially sapnrized sn that 41] mal as is liquid and as me] % vaper. Equilibrium data are given in Problem 11.4u2t Calculate the fullnwing. {a} Mules per hear distillate and bettems. (b) Minimum reflux ratin Rm. (c) Minimum steps and thenretieal trays at tntal reflux. {d} Theoretical number {if trays required fer an eperating reflux ratie at 2.5 : l. Cumpare with the results of Preblem 11.4-2, whieh uses a saturated liquid feed. . . . . Ill-illllllllllllllllll I.- I ..II .._.I..II.......- -. .. . .1.. LI. . .r... ... .. V. n. . . .. 1....1 . ... .. 1.1.1.... .. . I . . lllrltlllilllillllll ...-II ._=. .11 I_I_.-. m- . .- . .. ...._ ..m . .I . .... rllIIlllliilIFlIilll Illll III JILI; .. . .. ..L.... ..qu. .. . . ..lllllllliillll...lllllhhlll II I .._..._I. . ... .__.. ...... . ._I._... _ . ... . ...-II-ulluilI-II-II-III . IlL. I... m TI .. ....I.. T. _ q _. . . .“ alrlrtzliilIIIIII-ltll I ...... T. . . . . ..I ...... ...... .. IIIIIIIIII IIIIIIIIIII - I... I I. I ... . ... - . . . .... ...u..r.null-IIIIIIIIIIIIIIIIIIII+fl..._.1 JLIHII I .u .. . . . .. . :lIllliIIIIIlllflFIllII+muI... rp-11..I.I.| ... .. .. . . .. .. ... -_ .I ..." rill llllliIIIlI Eli .... l1..|T.|-.... . I... . . ... ... .I _ ..... . . Itll llll IIIIIIHIII ..E. _ ...... ....I. u . ... .Iill Ill. 1 .....I.. . L ..hI . .....u... II]. It... “III . "HET. _ ... . ” ... . _ . _ II III. I .I . . ...-... lllllllll - Mfr—.... .... I. . "fl". "flt_.uu..+....-..._ . . III II .Tflm....u...l.H . . . III! III 2.. .... . .. _ . llll I |..mI..I...I.. .. .. I. . . 1%}? III FA‘EfiI'I: i?__zE_.-Ih._“ - .rl .... J" I' F a. I ' JI: I a I ..' - - _I. ." _.- 1“ #1: EH 3 -A. II I ungain- E L F: -_!._ {ff-:- fl-II I I III!!- I I ; --I_._f -I. EIMDNTGD “5 ' '*'I1-‘!3I| E-J 15$. -. WEI-e.“ hr" .' .. ii it.“ n .l ....m E .... l _. - ... . - ... . .- I I .I: -I u. .I... . F "HEEEEEEm " Ii f:1 PhliE'TEHIés mum Iii-I I i I'IlIl'I-III II I III-I IIIII I I I II I1IIIIIIIIIIIIIIIIIIFI ' I III" -—-I--—-|I-r—g--I.——-—II II -- _ I I..l 'l- J i..! I I44 -.--'r Inn.- f-I I:- J-!— . 1.:..—|'—_' . :... "...—.— J .____._T 1 nun-nim- '--1-I-:-. r- .. ---I--- ...1_._.. —I'l.' ' ---—H-I _ _ _ ._ __ fl .. _ . .... L . ..H. I .. .... __ .U. . .w . .. _ ....... H” - I. . .. ...h“..u“._._..w.n.._ . . ... ...I.I.I..III ml.“.IIJ1-.. ..I .11. ...-. I . _ .. ._.. a . . " ...—.... .....I. _ 1...." ..m”... _ . _ . II- ..__I_... ._I H . . . 1111-..I-Il .III I 11-. . . . . ... . I I I — I. II--. .... . 1.II... .....flvW... h". Hm .. - . ...ILHHT. ..I. . ._ . I1._.ll..ln ... _-IrI:.r- - uI .. I I I I..- ..-...I... .r .... ...-...I... a .....1-.-. .... . II... .P L.—I I1 I. ILI... L .-. I. .lllll .-.»: .lflll l . .. .. ...“. nu.uumuflu....duw_ud.-n ..d .... ..flmmflu. pr... .-. .. -- . :- ..- .m" ..J”..I.._u. .m._.m..............I-_. . ... . " .....- . .. ......I... 11.445. Distraction Using a Vapor Feed. Repeat Problem 11.4—1 but use a feed that is saturated vapor at the dew point. Calculate the following. {a} Minimum reflux ratio R“. _ (b) Minimum number of theoretical plates at total reflux. {c} Theoretical number of trays at an operating reflux ratio of 1 .5011," ). I:24mg:Irmare::uIIIIII-uII-n-I-Ia-IIFI-u III “III! II.-IIIIII.-_-'I.Iu-'I: rrtucnIuII-HalluntEI-I'Ifl IIIIIIII lI-‘IIIIIII'II Dnllllllil :II-III-Ifl-Illlilllll-lI . . I I _ II- IIIIIIIII I “III - Igliiill-lll-l-lll ll Ill-IIIIII:: = IIIIII I III-I'll.- Illll'lll [-..-I ...-l 'l _.- I- I I "I I llll. lutlll-lll-l-I‘ I'll-III: Ill-l ' j “H ' .._—L ' r _Er u IIIflI-IIIIIII I Ill-fl II": | -I;H :.u ...-",7... _ III II. - -- ILIIIIIIl-l-l-lll Ill-I In! ._1_..;_.... __.... ..I.--—-.--.._-...I.- _' In“ ' _ - ' ' -l—I—II—.I-—I_I.J—__ .I.-I-- ---I- --I- ----I—II--d_-I-I'II--:r--I—I-I I I I“ I _'.:I ._-__._.-.. r-'_._ . *1 -- " -:" " "I" " " '__,__ ___... ._, IIIIHI'IIIIIIfl-i I'- '_L ' "“-|"=""'-"--'"" """ -"‘ _' I IIIIIII "- - ..l. IHIl-h'l-d lI-Ifl 5" I 'l-EI'FII-H $55....“ II .._I_ .I . - - L4.._l_._I_ . 'I'_I"l--1—:—I_ r ___—_._..: . . . _ __ . IIIIIIII Ill-I I I H.”- I" :--"=--'-' '—"-" ' " T T -- "Ia-i" --a—-'- hl'm"=:=fl'flfll ' a“ .._. II: IIJ'II:=-: 1:: "-._—..I—I;_I___.._. __ ___-_ _, ,_-_._- ., -I-l-IlI-I-lll ._ III - - i I I. 1.— I __ :_: ' ' :' 'L‘lhri‘rli; --- -_I—r-'r.-..-.=...:.l "IA-Ii. -—'_1.-.r.+ .-.. '|._'_.r._._..... - - _ . - .. 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This note was uploaded on 06/06/2011 for the course CHEM 3040 taught by Professor Reddy during the Spring '10 term at Taylor's.

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distillation-1 - 11.4—1. Disriiinrioa Using...

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