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LEMBAR PERHITUNGAN NERACA MASSA DAN NERACA ENERGI

Nama Alat Crusher Kode Alat

Fungsi

Biomassa

TKS

C6H10O5 = 50 % C6H10O5 = 50 %

H2O = 65 % H2O = 50 %

F1 = F2

F1 = 5181,11 Kmol/Jam

F1 = F2 = 5181,11 Kmol/Jam

= 839339,759 Kg/Jam

Dibuat Diperiksa Disetujui

Crusher

F4F1


Nama Alat Rotari Dryer Kode Alat

Fungsi

H2O = 100 %

C6H10O5 = 50 % C6H10O5 = 90 %

H2O = 50 % H2O = 10 %

Analisa DOF

MB CB

Jumlah variasi aliran 5 5+5

Jumlah persamaan independen 2 2+1

Jumlah variasi spesifik 3 3+4

Jumlah 0 0

Basis F2 = 5181,11 Kmol/Jam

NMT

F2 = F3 + F4

5181,11 = F3 + F4

NMK

C6H10O5

F2 . 0,5 = F4 . 0,9

5181,11 . 0,5 = F4 . 0,9

F4 = 2590,55 Kmol/Jam

F3 = F2 – F4

= 5181,11 – 2590,55

= 2302,7153 Kmol/Jam

Dryer

F3

F4F1

T = 60 0F

Komposisi aliran

F2 C6H10O5 = 50 % . 5181,11 = 2590,55 Kmol/Jam = 419669,88 Kg/Jam

F2 H2O = 50 % . 5181,11 = 2590,55 Kmol/Jam = 466299,9 Kg/Jam


F4 C6H10O2 = 90 % . 2878,394 = 2590,55 Kmol/Jam = 419669,8 Kg/Jam


Komponen Input (Kmol/Jam) output (Kmol/Jam) input (Kg/Jam) output (Kg/Jam)

F2 F3 F4 F2 F3 F4

C6H10O5 2590,55 0 2590,55 419670 0 419670

H2O 2590,55 2302,715 287,839 466,30 41449 5181,1

Total 5181,11 5181,11 466300 466199,86



Nama Alat Separator Pressure swing adsorption (PSA) Kode Alat

Fungsi Memisahkan N2 dan O2 dengan mengikat N2 menggunakan absorber

zeolit

N2 teradsorpsi

Air

N2 = 79 %

O2 = 21 %

O2

Analisa DOF

MB

Jumlah variasi aliran 4

Jumlah persamaan independen 2

Jumlah variasi spesifik 2

Jumlah subside 0

Jumlah 0

O2 yang dibutuhkan pada gasifier = 0,3 Kg/kg berat kering biomassa

Berat kering biomassa = 419669,88 Kg/Jam

O2 dibutuhkan = 0,3 . 419669,88 = 125900,964 Kg/Jam

= 3934,4051 Kmol/Jam

= F7

NMT

F5 = F6 + F7

F5 = F6 + 3934,4051

NMK O2 NMK N2

0,21 . F5 = 3934,4051 F6 = F5 – F7

F5 = 18735,262 Kmol/Jam F6 = 18735,26249 – 3934,405722

F6 = 14801 Kmol/Jam = 414424,01 Kg/Jam

F7

F6

F5

Komposisi aliran

F2 O2 = 21 % . 18735,262 Kmol/Jam = 3934,405122 Kmol/Jam = 125900,964 Kg/Jam

F5 N2 = 79 % . 18735,262 Kmol/Jam = 14800,857 Kmol/Jam = 414424,006 Kg/Jam

F6 N2 = 100 % . 14800,857 Kmol/Jam = 14800,854 Kmol/Jam = 414424,01 Kg/Jam

F7 O2 = 100 % . 3934,405122 Kmol/Jam = 3934,4051 Kmol/Jam = 125900,964 Kg/Jam

Komposisi Input (Kmol/Jam) output (Kmol/Jam) input (Kg/Jam) output (Kg/Jam)

F5 F6 F7 F5 F6 F7

O2 3934,40 0 3934,40 125901 0 125900,96

N2 14800,85 14800,85 0 414424 414424 0

Total 18735,26249 18735,26249 540325 540325



Nama Alat Boiler Kode Alat

Fungsi Menghasilkan steam dari utilitas

H2O (l) H2O (g)

Steam yang dibutuhkan pada gasifier

= 0,3 Kg/kg berat kering biomassa

Berat kering bio massa = 419669,88 Kg/Jam

F8 = 0,3 . 419669,88 Kg/Jam

= 125900,964 Kg/Jam

= 6994,49799 Kmol/Jam

F8 = F9 = 6994,498 Kmol/Jam

= 125901 Kg/Jam

Komponen Input (gr) Output (gr)

F8 F9

H2O 125901 -

Steam - 125900,964

Total 125901 125900,964


F9F8


Nama Alat Gasifier Kode Alat

Fungsi Menghasilkan synthesis gas dari biomassa

CO = 22,10 %

C6H10O5 = 90 % H2 = 46 % 18,46

H2O = 10 % CO2 = 31 %

CH4 = 1 %

Ash = 7,54 %

O2 Char = 21,26 %

H2O = 52,83 %

Steam

F4 = 2878,394 Kmol/Jam

F5 = 3934,40512 Kmol/Jam

F6 = 6994,49799 Kmol/Jam

NMT

F10 = F4 + F7 + F9

= 2878,394 + 3934,394 + 6994,49799

= 13807,3 Kmol/Jam

F4 H2O = 0,1 . 2878,394 = 287,83 Kmol/Jam

F9 H2O = 6994,498 Kmol/Jam

Komposisi keluaran

F10 CO = 22 % ( 18,46 x 13807,3 ) = 563,2907 Kmol/Jam

F10 CO2 = 31 % ( 18,46 x 13807,3 ) = 785,0387 Kmol/Jam

F10 H2 = 46 % ( 18,46 x 13807,3 ) = 1177,55812 Kmol/Jam

F10 CH4 = 1 % ( 18,46 x 13807,3 ) = 22,9394 Kmol/Jam

F10H2O = 52,74 % . 13807,3 = 7281,96 Kmol/Jam

F10Ash = 7,54 % . 13807,3 = 1041,0702 Kmol/Jam

F10 Char = 21,26 % . 13807,3 = 2935,431 Kmol/Jam

Komponen input (Kmol/Jam) output (Kmol/Jam)

F4 F7 F9 F10

H2 - - - 1177,558116

CO - - - 563,2907

F7

F10

F4

F9



Nama Alat Cyclone 1 Kode Alat

Fungsi Memisahkan produk syngas dari impurities

H2 H2

CO CO

CO2 CO2

CH4 CH4

Impurities

NMT

F10 = F11 + F12

13807,2974 = F11 + F12

Konversi = 99 %

F12 Ash = 99 % . 1041,0702 = 1030,6595 Kmol/Jam

Char = 99 % . 2935,43 = 2906,077 Kmol/Jam

F12 = 1030,6595 + 2906,077

= 3936,736621 Kmol/Jam

F11 = F10 + F12

= 13807,2974 + 3936,73

= 9870,5607 Kmol/Jam

Komposisi input (Kmol/Jam) output (Kmol/Jam)

F10 F11 F12

H2 1177,5581 1177,55812 -

CO 563,2907 563,290708 -

F10F10 = 13807,2974 Kmol/Jam

CO = 563,290787 Kmol/Jam

CO2 = 785,0387 Kmol/Jam

H2 = 1177,5518 Kmol/Jam

CH4 = 22,9394 Kmol/Jam

Konversi

99 %

F11

F12

F11 = 9870,56 Kmol/Jam

CO = 563,29 Kmol/Jam

CO2 = 785,038 Kmol/Jam

H2 = 1177,55 Kmol/Jam


Ash = 10,410 Kmol/Jam

Char = 29,354 Kmol/Jam

H2O = 7281,968 Kmol/Jam

F12 = 3936,7366 Kmol/Jam




Nama Alat Cyclone 2 Kode Alat

Fungsi Memisahkan Ash dan Char

H2 H2

CO CO

CO2 CO2

CH4 CH4

Impurities

NMT

F11 = F13 + F14

9870,6 = F11 + F12

Konversi = 99 %

F14 Ash = 99 % . 10,411 = 10,307 Kmol/Jam

Char = 99 % . 29,354 = 29,061 Kmol/Jam

F14 = 10,307 + 29,061

= 39,367 Kmol/Jam

F13 = F11 + F14

= 9870,67 + 39,367

= 9831,2 Kmol/Jam


F10 F11 F12

H2 1177,6 1177,6 -

CO 563,29 563,29 -

F11 Konversi

99 %

F13

F14

F13 = 9831,2 Kmol/Jam



H2 = 1177,6 Kmol/Jam




H2O = 7282 Kmol/Jam

F12 = 39,367 Kmol/Jam


F11 = 9870,6 Kmol/Jam



H2 = 1177,6 Kmol/Jam




H2O = 7282 Kmol/Jam



Nama Alat Steam methane reformer Kode Alat

Fungsi Mengubah kembali methane menjadi syngas

H2 H2

CO CO

CO2 CO2

CH4 CH4

Reaksi 1

CH4 + H2O CO + 3H2

m 22,93944 - 563,290 1177,5581

r 20,6454 20,645 20,64251 61,934

s 2,2939 20,645 583,93 1239,4946

Jadi air yang dibutuhkan = 20,64 Kmol/Jam

= 371,5652 Kmol/Jam


F13 F11

CO 15 77,14 16350,21

CO2 34541,70 34541,70

H2 2355,11 2478,9892

CH4 367,03 36,703

H2O 131075,43 130703,81

Total 18411,429 18411,429

F13

Reformer F15

F15 = 9872,08672 Kmol/Jam


CO2 = 785,0387 Kmol/Jam

H2 = 1239,4946

F13 = 9830,79572 Kmol/Jam


CO2 = 785,0387 Kmol/Jam

H2 = 1177,55,812 Kmol/Jam



Nama Alat Absorber Kode Alat

Fungsi

CO CO

CO2 CO2

CH4 CH4

Konversi = 99,66 %

F CO2 = F CO2 . 99,66 %

= 785,038 . 99,66 %

= 782,3696 Kmol/Jam


F15 F16 F17 F18

H2 583,936 - 583,9362 -

CO 785,038 - 2,66913 782,2564

CO2 1239,49 - 1239,494 -

CH4 2,2939 - 2,29394 -

Ash 7261,323 5130,29 7261,323 5130,29

MEA - 1282,5731 - 1282,57

Total 16284,95239 16284,95239

F18 = 7195,23

CO2 = 782,3696 Kmol/Jam

20 % MEA = 1282,57 Kmol/Jam

F14

F11

F13

F15

F17 = 9831,2 Kmol/Jam



H2 = 1239,49 Kmol/Jam

F15 = 9872,086 Kmol/Jam



H2 = 1239,4946

F16 = 9872,086

MEA = 20 % = 1282,3876 Kmol/Jam

H2O = 880 % = 5129,5502



Nama Alat Stripper Kode Alat

Fungsi Untuk mericycle MEA untuk proses absorbsi

Air

N2 = 79 %

O2 = 21 %


F18 F19 F20

CO2 782,3696 782,36 -

MEA 1282,573 - 1282,57

H2O 5130,29 - 5130,29

Total 7195,23 7195,23

Stripper

CO2

782,3696 Kmol/JamF18 = 7195,2352

Kmol/Jam


MEA = 1282,387 Kmol/Jam

H2O = 5129,550 Kmol/Jam

F20

F19

F18

F18 = 6412,88 Kmol/Jam

MEA = 1282,577 Kmol/Jam



Nama Alat Reaktor Kode Alat

Fungsi Untuk mengkonversi produk dari absorbs menjadi metanol

CO CO

CO2 CO2

CH4

Reaksi 1

CO + 2H2 → CH3OH

583,93 1239,49 -

554,73 1109,47 554,73

29,1968 130,02 554,7394

Reaksi 2

CO + 3H2 → CH3OH + H2O

2,66913 130,01 554,7394 7261,3231

2,535675 7,60702 2,5356 2,5356

0,1334 122,4086 557,2751 7263,85


F17 F21

CH3OH - 17832,80

CO 16350,21 817,5108

F21

F17

F17 = 9089,717 Kmol/Jam



H2 = 1239,49 Kmol/Jam

F21 = 7975,16 Kmol/Jam



H2 = 122,40

Konversi 95 %

F CO bereaksi = 95 % . F17 CO

= 95 % . 583,93

= 554,73

F CO2 bereaksi = 95 % . F17 CO2

= 95 % . 2,6691

= 2,535308 Kmol/Jam



Nama Alat Flushdrum Kode Alat

Fungsi

CO CO

CO2 CO2

CH4


F21 F22 F23

H2 557,2751 - 557,1945

CO 29,19 29,1968 -

CO2 0,13 0,1334 -

CH4 2,2939 2,2939 -

H2 122,40 122,40 -

H2O 7263,8588 - 7263,8588

Total 7975,1668 7975,1668

F23

F22

F13

F21

FlashdrumF21 = 7975,16 Kmol/Jam



H2 = 122,40

F21 = 154,0328 Kmol/Jam



F23 = 7821,1339 Kmol/Jam

CH3OH = 2,2939 Kmol/Jam

H2O = 7263,85



Nama Alat Distilasi Kode Alat

Fungsi

CO2

CH4

H2O = 7263,02163

F24 H2O = 0,15%

99,85% . 557,27514 = 0,837168 Kmol/Jam

F25 H2O = F23 H2O – F24 H2O = 7263,85 – 0,837168

= 7263,02163 Kmol/Jam


F21 F22 F23

CH3OH 17832,80 17832,80 0

H2O 130749,45 15,0690 130734,389

Total 148582,26 148582,26

F23 = 7821,1339 Kmol/Jam

CH3OH = 557,1945 Kmol/Jam

F25

F24

F13F23

Distilasi

F24 = 558,1123 Kmol/Jam

CH3OH 99,85 % = 557,27514 Kmol/Jam

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