UNIVERSIDAD NACIONAL SAN CRISTÓBAL DE HUAMANGA FACULTAD DE INGENIERÍA QUÍMICA Y METALURGÍA
ESCUELA DE FORMACIÓN PROFESIONAL DE INGENIERÍA EN INDUSTRIAS ALIMENTARIAS ASIGANATURA DE TRANSFERENCIA DE MASA: AI-443
PRÁCTICA N° 10
“DESTILACION DIFERENCIAL”
FECH FECHA A DE DE PR PRÁCT CTIC ICA A
: 03 03 de de Dic Dicie iemb mbe de! de! "0#3 "0#3
GRUPO
: Mi$c%!e&' #0 ( # )m*
PROFESORA ALUMNA
: I+,* A++- .EGARRA VILA : P-/c-/-+c- 1-i/-m2+' 1/de -4i-
A1ACUCHO 1ACUCHO ( PER5 "0#3
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•
•
I O!"ETI#OS: E&4/di- !- &e)--ci6+ )% de&4i!-ci6+ di7ee+ci-! de !- me8c!- de e4-+%! ( -,/-* De4emi+- e! b-!-+ce de m-4ei- di7ee+ci-! 9 b-!-+ce de e+e,e+ !- )2c4ic-*
II
RE#ISIÓN !I !I!LIOGRÁFICA:
ASPECTOS GENERALES: L- de&4 de&4i! i!-c -ci6 i6+ + di7e di7ee+ e+ci ci-! -! e& /+/+- %)e %)e-c -ci6 i6+ + de &e &e))--ci ci6+ 6+ de !%& !%& c%m)%+e+4e& ;%!24i!e& de /+- me8c!- !+% ec4i?c-d-@ e& /+- %)e-ci6+ e
E$%&'() *'+ *'$,+)*./ *'/'2)+: Donde:
F D T T R C
C-,C-, - i+ic i+icii-!! de !!- me8 me8c! c!- ! !m%!@* De&4i!-d% 4%4-! ec%,id% >m%!@* L< Lm%!@* F-cc -cci6 i6+ + m%!- !- de! m2& m2& ;%!2 ;%!24i 4i!! >E4-+%!@ Tem)e-4/-* C-!% C!% +e4% +e4% ec-!@* C-!% +e4% e4i-d% - 4-;$& de! c%+de+&-d% &/be+7i-d% >c-!@*
!ALANCE DE MATERIA: P% &e )% c-,-&' &e 4ie+e /+ b-!-+ce e+4e e! m-4ei-! i+ici-! 9 e! ?+-! %b4e+id% -! c/!mi+- !- de&4i!-ci6+: G!%b-! : F D T M2& ;%!24i! :
FF D T
xˆ D
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F = W
Ln
Ec* R-9!ei,
xF
∫
xW
:
1 dx y − x
!ALANCE DE ENERGÍA: E& +ece&-i% de4emi+- e! c-!% +e4% 4%4-! &/mi+i&4-d%& - 4-;$& de! e;id% )-- -!c-+8- e! e&4-d% ?+-! de !- de&4i!-ci6+' b-&-d% e+ !%& c2!c c2 !c/! /!% %& de !-& !-& e+4 e+4-!) -!)-& de me me8c 8c!!-'' - 4-; ;$& de !- &i,/i i,/ie+ e+4e 4e e)e&i6+: Q R
= D T H V + WH W − FH F
Mie+4-&
= DT
HV
− HD
T
E! cc-!% !% ee-!! &/mi &/mi+i +i&4 &4-d% d% - 4-; 4-;$& $& de! de! cc-!e !e+4 +4-d -d% % e!$c e!$c4 4ic ic% % de! de! de&4i!-d% e&: SUMIN PθD 1 e! c-!% e4i-d% e+ e! c%+de+&-d% )% e! /=% de -,/- de e7i,e-ci6+ e&: REF mC)>T& ( Te@
III III
ASPE ASPECT CTOS OS EPE EPER RIM IMEN ENT TALES ALES::
P/.2'*(',. E5'/(',)+: #@ Di&)%+ Di&)%+e e )-- !- )2c4ic)2c4ic- de /+%& # !i4%& !i4%& de me8c!me8c!- !ce >ce- - em$4 em$4icic-me+ me+4e@ 4e@'' e,i& e,i&44- e! ;%!/me ;%!/me+ + e-c4% de !- me8c!- !
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e7i e7i,e ,e-ci -ci6+ 6+ cic/! cic/!-+4 -+4e e )% e! c%+de+ c%+de+&-d &-d% %** e-!i8-+ -&4- !- ?+-!i8-ci6+ de !- de&4i!-ci6+*
L%&& e,i& L% e,i&4 4%& %& &e
OBSERVARSE LAS PRIMERAS GOTAS GOTAS DE DESTILADO ' @ AL OBSERVARSE e,i&4- !- %-' ec%,e ec%,e !-& m/e&4-& i+&4-+42+e-& de de&4i!-d% de&4i!-d% 9 de! !
@ C-mbi- C-mbi- de )%be4)%be4- -! mi&m% mi&m% 4iem)% de&4i!-d% 9 7%+d%@ e+ !%& 7-&00 mL@ !- 4em)e-4/- 9 ,-d% -!c%6!ic% c%+ e! -!c%%!me4% 9 -c/m/!- e+ /+ eci)ie+4e eci)ie+4e ce-d%* ce-d%* Re)e4i Re)e4i $&4e )-&% >@ -&4-
A6+$$ *' +)$ M&'$,/)$: #@ E! m/e&4e% m/e&4e% de! de! de&4i!-d% de&4i!-d% 9 e! !- /+%& /+%& "0C "0C@K @K i+7% i+7%m m-c -ci6 i6+ + U&- >U&- !-& P/b!icP/b!ic-ci% ci%+e& +e&@* @* L-
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w x − w aire ρx = w w − agua destilada aire
3@ C%+ e! ;-!% de !- de+&id-d de !- m/e&4- de4e em mi+- !c%+ce+4-ci6+ de e4-+%! e+ c-d- m/e&4- /4i!i8-+d% !- 4-b!- de de+&id-de& de e4-+%! >A@ e+ -,/- >B@ 9 e)%4- e! Q e+ )e&% de e4-+%! 9 de4emi+- !- 7-cci6+ m%!- de e4-+%! e+ c-d- m/e&4-: Wi=
%peso 100
→ X i ó Y i =
(
Wi / M A Wi ( 1 −W ) − M A M B
)
D','/()27 (.+)/: #@ T-+4% !- -!ime+4-ci6+ !
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@ De4emi+- De4emi+- e! c-/d-! )%medi )%medi% % de de&4i!-d% de&4i!-d% )%)% )%)%ci%+-d ci%+-d% % )% e! e
#I
CÁLCULOS
PM A =46.069 Kg / Kmol PM B=18.015 Kg / Kmol
41 41 D),.$ D),.$ .8,' .8,'*. *.$ $ ' '+ +)8 +)8./) ./),./ ,./. . N° 0 # " 3 J #0 ## #" #3 #J
T'(5 . 9( 0 #0 # "0 "*J "*30 33*#0 3*"0 J#*## J*"3 J*J J*"# *# J*#"
T 1
T 2
T 3
3J*" * #* #* "* 3* J*" J* * * * *3 *# * 0*J
"*J "* "* 3"*# "* * 0* #* "* 3*J J*J *" * * *3
3* 3* 33* 33* "*" #* "* 3*# 3*3 J*# *0 * * * *3
T D
# # # # # # # # # # #
T E
T S
#* #* #* #* #* #* #* #* #* #* #* #* #* #* #*
#* #* #* #* #*0 "* 30*0 30*0 30*" 3#* 3#* 3#* 3#* 3#* 3#*
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#00 #00 0 0 0 T# T# T" T" T3 T3 TD TD TE TE TS TS
0 0 J0 30 "0 #0 0 0
#0
N M/e&4 Pe&% !-&4e -ie 0 # "
F D% % D# # D"
*J" *J" *J" *J" *J" *J"
"0
30
Pe&% !-&4e -,/J*03 J*03 J*03 J*03 J*03 J*03
J0
Pe&% !-&4e m/e&4 J*0 J*0 J*0 J*3 J*0" J*0
0
De+&id-d de !m/e&4>,m!@ 0*0J 0*#0 0*30 0*##J 0*J00 0*#3
0
0
Q Q VV
#J J
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D #0 D#0 #0
*J" *J" *J" *J" *J"
D ^
ρmuestra=
(
P lastre lastre aire− P lastre lastre muestra muestra P lastreaire − Plastre lastre agua
N M/e&4 Pe&% !-&4e -ie 0 # " 3 J
F D% % D# # D" " D3 3 DJ J D D D D
J*03 J*03 J*03 J*03 J*03
*J" *J" *J" *J" *J" *J" *J" *J" *J" *J" *J" *J" *J" *J" *J" *J" *J" *J" *J"
)
J*#" J*# J*#" J*#0 J*J
0*03" 0*3 0*" 0*30
" # JJ
0*J#0J
20 ° C
× ρ agua
Pe&% !-&4e -,/J*03 J*03 J*03 J*03 J*03 J*03 J*03 J*03 J*03 J*03 J*03 J*03 J*03 J*03 J*03 J*03 J*03 J*03 J*03
Pe&% !-&4e m/e&4 J*0 J*0 J*0 J*3 J*0" J*0 J*0# J*0 J*0J" J*0 J*0" J*"" J* J*J3J J* J*3 J* J*"J J*3
De+&id-d de !m/e&4>,L@ 0*0J 0*#0 0*30 0*##J 0*J00 0*#3 0*## 0*"#" 0*0# 0*"0 0*3 0*3" 0*0J 0*J 0*# 0*J" 0*"3 0*3 0*3
Q Q VV
#"*" "*0 #0*0 #* *3 0* * J*#0 *3 J3*3 *# 3* *3 3*03 J* 30* J*" "J* #*
#*#J * #"*J * #"*0 * ##*# J*# #0*J" #*3 * J*" * J#*3 *0 3*0 *3" 30*0# "*JJ
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P!r"i"as P!r"i"as= −( D D T + W ) =18 #−( 5.2292 + 12.4800 ) # P!r" P!r" i"as =0.2908 #
%W / W $ =
PM A %W / W PM A A
+
100−%W / W
PM B
0.12 0.12 25
$ =
46.069 0.12 0.12 25 46.069
+
1− 0.1225 18.015
$ =0.0518
^ ^ ^=
PM PM = $ ∗ PM A + ( 1− $ )∗ PM B PM PM =0.0518∗46.069 + ( 1−0.0518 )∗18.015 PM PM
Kmol=
19.4682 Kg / Kmol
× ρ
^
PM PM
Kg # Kg 19.4682 Kmol
# × 0.98048 18 #× =
Kmol=0.9065 Kmol
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37.91
$ D = ^
46.069 37.91 46.069
− + 100 37.91 18.015
$ D =0.1927 ^
^ ^ ^
PM PM DT = $ D∗ PM A + ( 1− $ D )∗ PM B ^
^
PM PM DT = 0.1927∗46.069 + ( 1−0.1927 )∗18.015 PM PM DT = 23.4210 Kmol
D T Kmol Kmol =
D T × ρ DT
^
PM PM DT
5.2292 # × 0.94104
= 23.4210
D T Kmol Kmol =0.2101 Kmol
%W / W $ &=
PM A %W / W PM A
+
100−%W / W
PM B
0.37
$ %&=
46.069 0.37
+
100 −0.37
Kg Kmol
Kg #
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W Kmol=
W × ρW
^
PM PM W
# × 0.9993 12.48 #×
= 18.0571
Kg #
Kg Kmol
W Kmol= 0.6906 Kmol
P!r"i"as P!r"i"as= ∗ $ −( D T ∗ $ D + W ∗ $ & ) ^
P!r"i"as P!r"i"as= 0.9065∗0.0518 − ( 0.2101∗0.1927 + 0.6906 ∗0.0015 ) P!r"i"as P!r"i"as= 0.0054 Kmol
!)+)2' *' (),'/) ,'7/2) Ec/-ci6+ R-9!ei, $
"$ = ln W $ ' − $
∫ &
91,09 81,95 78,19 76,18 74,92
0,0000 0,0500 0,1000 0,1500 0,2000
0,0000 0,3280 0,4416 0,5000 0,5374
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70,09 70,30
0,9500 1,0000
0,9434 1,0000
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