Air-Cooler H-408 Aftercooler H-409
4.83 Air-Cooler H-408
a. Entalpi aliran input, H 41 , pada 167,778 o C = 201471099,601 kJ b. Menghitung entalpi produk air-cooler, H 42 pada Temperatur = 60 o C = 333,15K Komponen m kg n mol CpdT, kJmol ∑H i kJ H 2 6940,429 3442673,066 28,983 99778031,556 CO 2 33911,119 770537,384 38,677 29802290,485 CO 739,007 26382,835 29,213 770714,748 H 2 O 31825,077 1766577,879 33,922 59925800,394 CH 4 2081,558 129749,478 37,527 4869124,867 C 2 H 4 0,020 0,712 47,356 33,702 C 2 H 6 0,231 7,673 57,368 440,194 C 3 H 8 2,967 67,284 81,389 5476,181 C 3 H 6 4,475 106,342 69,787 7421,242 C 4 H 10 0,204 3,514 107,456 377,647 C 4 H 8 0,209 3,720 94,233 350,587 H 42 195160061,603 Universitas Sumatera Utara Tabel LB-48 Neraca Energi pada Air-Cooler H-408 Komponen Masuk kJ Keluar kJ H 41 H 42 H 2 100536122,715 99778031,56 CO 2 32944082,469 29802290,49 CO 779206,261 770714,75 H 2 O 61537990,594 59925800,39 CH 4 5656094,681 4869124,87 C 2 H 4 41,365 33,70 C 2 H 6 546,336 440,19 C 3 H 8 6912,066 5476,18 C 3 H 6 9194,429 7421,24 C 4 H 10 470,159 377,65 C 4 H 8 438,526 350,59 Sub total 201471099,601 195160061,603 Q -6311037,998 Total 195160061,603 195160061,603 Universitas Sumatera Utara T in = 60 o C Aliran 42 Aliran 43 T out = 43,3333 o C ΔH CWS CWR H-409 42 43 TC TI TI4.84 Aftercooler H-409
Fungsi : mendinginkan aliran keluar dari H-408 sampai dengan 43,333 o C a. Entalpi aliran 42, H 42 pada 60 o C = 195160061,603 kJ Aliran 42 adalah aliran keluar dari H-408 b. Menghitung entalpi aliran 43, H 43 pada 43,3333 o C Aliran 43 adalah aliran 42 yang telah didinginkan. T 1 = 60 o C = 333,150 K T 2 = 43,333 o C = 316,483 K Komponen m kg n mol CpdT, kJmol ∑H i kJ H 2 6940,429 3442673,066 28,937 99621738,766 CO 2 33911,119 770537,384 37,969 29256815,107 CO 739,007 26382,835 29,192 770169,110 H 2 O 31825,077 1766577,879 33,795 59700795,161 CH 4 2081,558 129749,478 36,588 4747329,594 C 2 H 4 0,020 0,712 45,557 32,422 C 2 H 6 0,231 7,673 55,105 422,828 C 3 H 8 2,967 67,284 77,833 5236,891 C 3 H 6 4,475 106,342 67,017 7126,752 C 4 H 10 0,204 3,514 103,149 362,510 C 4 H 8 0,209 3,720 90,266 335,828 H 43 194110364,968 Universitas Sumatera Utara c. Menghitung beban Cooler H-303 Q H-303 Q H-409 = H 43 – H 42 = -1049696,635 kJ d. Menghitung kebutuhan air pendingin Cooler H-303 Q H-303 Suhu Air pendingin masuk, T 1 = 32,222 o C = 305,372 K Suhu Air pendingin keluar, T 2 = 43,333 o C = 316,483 K ∫ 483 , 316 372 , 305 CpdT = 0,83519 kJmol Maka jumlah air pendingin yang dibutuhkan adalah : N air = 1000 1 Q 483 , 316 372 , 305 303 H × ∫ − CpdT kmol = 1000 1 0,83519 5 1049696,63 × = 1256,838 kmol F air = Air Air BM N × = 1256,838 × 18,015 = 22642,069 kg Tabel LB-49 Neraca Energi pada Cooler H-303 Komponen Masuk kJ Keluar kJ H 42 H 43 H 2 99778031,556 99621738,77 CO 2 29802290,485 29256815,11 CO 770714,748 770169,11 H 2 O 59925800,394 59700795,16 CH 4 4869124,867 4747329,59 C 2 H 4 33,702 32,42 C 2 H 6 440,194 422,83 C 3 H 8 5476,181 5236,89 C 3 H 6 7421,242 7126,75 C 4 H 10 377,647 362,51 C 4 H 8 350,587 335,83 Jumlah 195160061,603 194110364,97 Sub total 195160061,603 194110364,968 Q -1049696,635 Total 194110364,968 194110364,968 Universitas Sumatera Utara4.85 Pre-PSA Knock-Out 2 S-402
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» Knock Out Drum S-302C Compressor K-301D Air-cooler H-302D Knock Out Drum S-302D
» Compressor K-301E Air-cooler H-302E After-cooler H-303 Post-Compressor Knock-Out S-303
» Steam Reformer R-401 NERACA ENERGI
» Air-Cooler H-408 After-cooler H-409 Pre-PSA Knock-Out 2 S-402 Pressure Swing Adsorption Unit S-403
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» Knock Out Drum S-301 Compressor K-301A Air-cooler H-302A
» Knock Out Drum S-302A Compressor K-301B Air-cooler H-302B
» Knock Out Drum S-302B Compressor K-301C Air-cooler H-302C
» Knock Out Drum S-302C Compressor K-301D Air-cooler H-302D
» Knock Out Drum S-302D Compressor K-301E Air-cooler H-302E
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» Cyclone S-203 Reformer R-203
» Cooler H-201 H-202 KESIMPULAN
» Scrubber Gas Sintesis M-301 M-302
» Quench Water Recirculation Cooler Knock Out Drum S-301
» Compressor K-301A Air-cooler H-302A
» Knock Out Drum S-302A Compressor K-301B
» Air-cooler H-302B Knock Out Drum S-302B
» Compressor K-301C Air-cooler H-302C
» Knock Out Drum S-302C Compressor K-301D
» Air-cooler H-302D Knock Out Drum S-302D
» Compressor K-301E Air-cooler H-302E
» After-cooler H-303 Post-Compressor Knock-Out S-303
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