LAMPIRAN

Lampiran 1. Perhitungan Tugas Khusus

1. Gilingan

NBT A+B = C+D

12.915 Ku+(0,4111x12.915 Ku) = (0,4588x12.915 Ku)+D

18.224,3565Ku = 5.925,402Ku+D

D = 18.224,3565Ku–5.925,402Ku

D = 12.298,9545 Ku

2. Pemurnian

Gilingan

Pemurnian

Tebu (A)12.915 Ku

Nira Mentah (D)

Air Imbibisi (B) 41,11%

Ampas (C) 45,88%

Nira Mentah (D)12.298,9545 Ku

Flokulan (E)0,0003%

SO2 (H)0,021%

Phosfat (F)0,002%

Susu Kapur (G)0,16%

Nira Encer (J)

Blotong (I)4,2%

NBT D + E + F + G + H = I + J

12.298,9545+(0,000003x12.298,9545)+(0,00002x12.298,9545)+

(0,0016x12.298,9545)+(0,00021x12.298,9545)=H+(0,042x12.298,9545)

12.321,4985Ku = H + 516,5561 Ku

H = 11.804,9424 Ku

3. Penguapan

NBT J = K + L

11.804,9424 Ku = (0,7924x11.809,9424 Ku) + K

11.804,9424 Ku = 9354,2364 + K

K = 2.450,706 Ku

4. Pemasakan

NBT L = M + N

Penguapan

Pemasakan

Uap (K)79,24%

Nira Encer (J)11.804,9424 Ku Nira Kental (L)

Uap (M)32,97%

Nira Kental (L)2.450, 706 Ku Massecuite (N)

2.450,706 Ku = (0,3297x2.450,706 Ku + N

2.450,706 Ku = 807,998 Ku + N

N = 1.642,708

5. Putaran

NBT N = O + P

1.642,708 Ku = (0,05x1.642,708 Ku) + O

1.642,708 Ku = 82,1354 + O

O = 1.560,5726 Ku

Lampiran 2. Perhitungan Tugas Khusus

Dik : Tebu : 4300 TCD = 179,17 TCH

Tebu : 105% x NM

179,17 = 1,05 x NM

NM = 170,64 TCH

Ampas : (T + I) – NM

Putaran

Tetes (O)5%

Massecuite (N)1.642,708 Ku Gula (P)

: (179,17 + 53,75) – 170,64

: 62,28 Ton/jam

Dik : kapasitas Giling : 4300 TCD

: 179,17 TCH

Uap %Tebu: 55,25 %

Kebutuhan uap: kapasitasGiling+uap% tebu

100

: 179,17 x 55,25

100

: 98,99 ton/jam

Kebutuhan ampas :

kebutuhanuap x (enthalpiuap−T air isi ketel)Efisiensi+NCV

: 98,99 x(722−95)0,8 x1824

: 42,53 ton/jam

Kelebihan Ampas : 62,28 – 42,53

: 19,75 ton/jam ampas