TY  - GEN
CY  - Universitas Lampung
ID  - eprints8114
UR  - http://digilib.unila.ac.id/8114/
A1  - Tosty Maylangi Sitorus, 0915041049
Y1  - 2015/03/10/
N2  - ABSTRAK
PRARANCANGAN PABRIK KALSIUM HIDROKSIDA
DARI KALSIUM OKSIDA DAN AIR KAPASITAS 30.000 TON/TAHUN
(Perancangan Reaktor -201 (R-201))
Oleh
TOSTY MAYLANGI SITORUS
 Pabrik Kalsium Hidroksida berbahan baku Kalsium Oksida dan Air,
direncanakan didirikan di Gresik, Jawa Timur. Pendiriaan pabrik berasarkan atas
pertimbangan akan ketersediaan bahan baku, sarana transportasi yang memadai,
tenaga kerja yang mudah didapatkan dan kondisi lingkungan.
Pabrik direncanakan memproduksi Kalsium Hidroksida sebanyak 30.000
ton/tahun, dengan waktu operasi 24 jam/hari, 333 hari/tahun. Bahan baku yang
digunakan adalah Kalsium Oksida sebanyak 2990.5752 kg/jam dan Air sebanyak
1152.8933 kg/jam.
Penyediaan kebutuhan utilitas pabrik terdiri dari unit pengadaan air,
pengadaan listrik, udara instrument, pengadaan steam.
Bentuk perusahaan adalah Perseroan Terbatas (PT) menggunakan struktur
organisasi line dan staff dengan jumlah karyawan sebanyak 163 orang.
Dari analisis ekonomi diperoleh:
Fixed Capital Investment (FCI) = Rp 205,740,256,298.81
Working Capital Investment (WCI) = Rp 36,307,104,052.73
Total Capital Investment (TCI) = Rp 242,047,360,351.54
Break Even Point (BEP) = 35.93 %
Shut Down Point (SDP) = 23.21 %
Pay Out Time before taxes (POT)b = 1.3 Tahun
Pay Out Time after taxes (POT)a = 1.58 Tahun
Return on Investment before taxes (ROI)b = 56.68 %
Return on Investment after taxes (ROI)a = 45.35 %
Discounted cash flow (DCF) = 48 %
Setelah melalui pengkajian, pada unit utilitas tidak memerlukan proses
demineralisasi, karena pada demineralisasi akan dihilangkan ion-ion positf seperti
Ca2+ dan Mg+
dimana ion-ion ini terdapat pada produk. Selain itu steam yang
berasal dari air dari proses demineralisasi dapat digantikan dengan heater yang
dilengkapi dengan furnace, sehingga dapat mengurangi biaya produksi.
Mempertimbangkan paparan di atas, sudah selayaknya pendirian pabrik
Kalsium Hidroksida ini dikaji lebih lanjut.

ABSTRACT
MANUFACTURING OF CALCIUM HYDROXIDE
FROM CALCIUM OXIDE AND WATER WITH CAPACITY 30.000 TONS/YEAR
(Design of Reactor-201 (R-201))
By
TOSTY MAYLANGI SITORUS
Calcium hydroxide plant with raw materials, calcium oxide and water is planned to be
built in Gresik, Jawa Timur. Establishment of this plant is based on some consideration due
to the raw material resourcess, the transportation, the labors availability and also the
environmental condition.
This plant is meant to produce 30,000 tons/year with 333 working days in a year. The
raw materials used consist of 2990.5752 kg/hour of calcium oxide and 1152.8933 kg/hour of
water.
The utility units consist of water supply system, power generation system, air supply
system, and steam supply system.
The bussines entity form is Limited Liability Company (Ltd) using line and staff
organizational structure with 163 employee.
From the economic analysis, it is obtained that:
Fixed Capital Investment (FCI) = Rp 205,740,256,298.81
Working Capital Investment (WCI) = Rp 36,307,104,052.73
Total Capital Investment (TCI) = Rp 242,047,360,351.54
Break Even Point (BEP) = 35.93 %
Shut Down Point (SDP) = 23.21 %
Pay Out Time before taxes (POT)b = 1.3 Tahun
Pay Out Time after taxes (POT)a = 1.58 Tahun
Return on Investment before taxes (ROI)b = 56.68 %
Return on Investment after taxes (ROI)a = 45.35 %
Discounted cash flow (DCF) = 48 %
After the assessment, the utility unit does not require demineralization process,
because the demineralization will be eliminated bye positive ions such as Ca 2+ and Mg +
ions which is contained in the product. In addition, the steam coming from the water
demineralization process can be replaced with a heater equipped with a furnace, to reduce
production costs.
Considering the summary above, it is proper to study the establishment of Calcium
Hydroxide plant further
PB  - Fakultas Teknik
TI  - Prarancang Pabrik Kalsium Hidroksida Dari Kalsium Oksida dan Air Kapasitas 30000 Ton/Tahun
AV  - restricted
ER  -