Electronic Theses and Dissertation

Prarancangan pabrik Barium Karbonat ini menggunakan barium sulfida (BaS) dan
karbon dioksida (CO₂) sebagai bahan baku dengan kapasitas produksi 22.000
ton/tahun. Proses produksi dilakukan melalui metode karbonasi yang terdiri dari
empat tahap utama, yaitu pada tahap persiapan, barium sulfida dari tangki
penyimpanan dialirkan ke hopper menggunakan bucket elevator, kemudian
dicampur air di mixing tank untuk membentuk slurry untuk dipanaskan hingga
60°C menggunakan heater. Gas CO₂ dari tangki penyimpanan juga dipanaskan
hingga suhu yang sama sebelum dialirkan ke reaktor bubble column melalui
sparger. Tahap reaksi berlangsung pada suhu 60°C dan tekanan 1 atm,
menghasilkan barium karbonat (BaCO₃) dan gas hidrogen sulfida (H₂S) dengan
konversi 99%. Campuran hasil reaksi dialirkane rotary filter untuk memisahkan
padatan dan cairan. Padatan (cake) yang mengandung BaCO₃ dikeringkan dalam
rotary dryer, kemudian dilakukan pengecilan ukuran menggunakan ball mill dan
vibrating screen hingga mencapai ukuran 200 mesh. Produk akhir dikemas dalam
karung 50 kg, disimpan di gudang, dan didistribusikan ke konsumen.
Hasil analisa ekonomi yang diperoleh adalah sebagai berikut:
a. Fixed Capital Investment = Rp. 97.916.905.691
b. Working Capital Investment = Rp. 15.460.564.056
c. Total Capital Investment = Rp. 103.070.427.043
d. Total Biaya Produksi = Rp. 204.108.065.105
e. Hasil Penjualan = Rp. 240.777.834.355
f. Laba bersih = Rp. 27.984.778.874
g. Pay Out Time (POT) = 3,45 tahun
h. Break Even Point (BEP) = 39,03%
i. Internal Rate of Return (IRR) = 19,34 %
Berdasarkan data-data di atas dapat disimpulkan bahwa Prarancangan Pabrik
Barium Karbonat dengan kapasitas produksi 22.000 ton/tahun layak dilanjutkan
ke tahap rancangan.

The preliminary design of a Barium Carbonate plant utilizes barium sulfide (BaS) and carbon dioxide (CO₂) as raw materials, with a production capacity of 22,000 tons per year. The production process is carried out using the carbonation method, which consists of four main stages. In the preparation stage, barium sulfide from the storage tank is transferred to a hopper using a bucket elevator, then mixed with water in a mixing tank to form a slurry and heated to 60°C using a heater. Carbon dioxide gas from the storage tank is also heated to the same temperature before being fed into the bubble column reactor through a sparger. The reaction stage takes place at 60°C and 1 atm, producing barium carbonate (BaCO₃) and hydrogen sulfide gas (H₂S) with a conversion of 99%. The reaction mixture is then sent to a rotary filter to separate the solid and liquid phases. The solid (cake) containing BaCO₃ is dried in a rotary dryer, followed by size reduction using a ball mill and vibrating screen until it reaches 200 mesh. The final product is packed in 50 kg bags, stored in a warehouse, and distributed to consumers. The results of the economic analysis are as follows: a. Fixed Capital Investment = Rp. 97,916,905,691 b. Working Capital Investment = Rp. 15,460,564,056 c. Total Capital Investment = Rp. 103,070,427,043 d. Total Production Cost = Rp. 204,108,065,105 e. Sales Revenue = Rp. 240,777,834,355 f. Net Profit = Rp. 27,984,778,874 g. Pay Out Time (POT) = 3.45 years h. Break Even Point (BEP) = 39.03% i. Internal Rate of Return (IRR) = 19.34% Based on the data above, it can be concluded that the Preliminary Design of the Barium Carbonate Plant with a production capacity of 22,000 tons per year is feasible to proceed to the detailed design stage.