Chapter 10
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Transcript of Chapter 10
![Page 1: Chapter 10](https://reader034.fdokumen.com/reader034/viewer/2022042603/563db7cc550346aa9a8e047b/html5/thumbnails/1.jpg)
Chapter 10Pemilihan Separator untuk Campuran Fluid Homogen
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Absorbsi dan Stripping1
Ekstraksi Liquid-Liquid2
OUTLINE
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ABSORPSI DAN STRIPPING
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ABSORPSI
Untuk A=1
Kremser Equation
Jika stage secara teori diketahui, maka konsentrasi dapat dihitung sebagai berikut
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Stripping
Untuk A=1
Kremser Equation
Jika stage secara teori diketahui, maka konsentrasi dapat dihitung sebagai berikut
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ABSORPSI
Faktor Yang mempengaruhi Absorpsi :
1. Liquid Flowrate
FlowrateFaktor
Absorpsi(L/KiV)
Komponen yang
terabsorpsi
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ABSORPSI
Faktor Yang mempengaruhi Absorpsi :
2. Suhu
Gas Liquid
Heating effect
SuhuSolubility
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ABSORPSI
Faktor Yang mempengaruhi Absorpsi :
3. Pressure
HighPressure
GreatSolubulity
KompresorNEED
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Example 10.1
Diketahui:Gas Stream- Flowrate : 850 m3/h- Benzene dalam gas : 0.02 by volume- Benzene dalam liquid : 0.002 by mass- BM Benzene : 78 kg/kmol- Psat Benzene : 0.128 bar
Liquid Stream- BM rata-rata Heavy Liquid Hydrocarbon : 200 kg/kmol- Psat Benzene : 0.128 bar
P = 1.07 barT= 250C22.4 m3 (keadaan standar)
Ditanya:a. Jika diinginkan 95 % removal benzene, berapa liquid flowrate (L) dan jumlah stage teoritis (N) ?
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Example 10.1JAWAB :• Flowrate vapor
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ABSORPSI Kimiawi
Reaksi Irreversible - Menghilangkan Oxide dari NO2 menggunakan hydrogen peroksida
Reaksi reversible - Menghilangkan Hidrogen Sulfida dan Karbon Dioksida dari gas stream menggunakan larutan monoetanolamin
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LIQUID-LIQUID EXTRACTION
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LIQUID-LIQUID EXTRAKSI
FeedLiquid Liquid
Immiscible
Solute
Pencampuran (Mixer)
Ekstrak E
Rafinat R
Solven
Campuran
Pemisahan (Separator)
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LIQUID-LIQUID EXTRAKSI
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LIQUID-LIQUID EXTRAKSI
Pemilihan Solvent, berdasarkan:
1. Distribution Coefficient
Semakin besar nilai Ki maka menunjukkan pelarut kurang dibutuhkan untuk separasi
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LIQUID-LIQUID EXTRAKSI
Pemilihan Solvent, berdasarkan:
2. Separation Factor
Mengukur kecenderungan komponen yang di esktrak apakah lebih mudah atau tidak
![Page 17: Chapter 10](https://reader034.fdokumen.com/reader034/viewer/2022042603/563db7cc550346aa9a8e047b/html5/thumbnails/17.jpg)
LIQUID-LIQUID EXTRAKSI
Pemilihan Solvent, berdasarkan:
Perbedaan densitas antara ekstrak dan rafinat harus setinggi mungkin
4. Recovery
Kelarutan Solvent terhadap raffinate harus serendah mungkin
3. Kelarutan solvent
5. Perbedaan Densitas
Tidak membuat Azeotrop dengan pelarut
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LIQUID-LIQUID EXTRAKSI
Pemilihan Solvent, berdasarkan:
High Vapor Pressure mengakibatkan emisi senyawa organic yang berdampak buruk terhadap lingkungan
7. Reaksi
Semakin besar tegangan antar mukaantara dua cairan, peleburan lebih mudah
6. Ketegangan Antarmuka
8. Vapor Pressure
Pelarut tidak menghasilkan reaksi samping dengan pelarut
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LIQUID-LIQUID EXTRAKSI
Pemilihan Solvent, berdasarkan:
- Tidak Beracun- Tidak mudah terbakar- Viskositas rendah dan titik beku yang tinggi juga akan
menguntungkan
9. Sifat Umum
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LIQUID-LIQUID EXTRAKSIKremmser EquationAsumsi : Garis kesetimbangan dan operasi merupakan garis lurus
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EXAMPLE 10.2
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EXAMPLE 10.2a
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EXAMPLE 10.2b
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EXAMPLE 10.3
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EXAMPLE 10.3a
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EXAMPLE 10.3aPlot Data equilibrium
Not straight
Slope = R SR=Flowrate of feed solventS= flowrate of extraction solvent
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EXAMPLE 10.3a
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EXAMPLE 10.3a
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EXAMPLE 10.3b
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EXAMPLE 10.3b
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EXAMPLE 10.3b
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EXAMPLE 10.3b
Data ekuilibrium dapat di linearisasi
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EXAMPLE 10.3b