Pabrik Dimetil Eter (DME) Dari Limbah Polietilen Tereftalat (PET) Dengan Proses Direct Synthesis

Zulhilmi, Muhammad and Wiyono, Fajar (2014) Pabrik Dimetil Eter (DME) Dari Limbah Polietilen Tereftalat (PET) Dengan Proses Direct Synthesis. Diploma thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Impor LPG menunjukkan peningkatan tiap tahunnya,
maka direncanakan mendirikan pabrik DME untuk memenuhi
kebutuhan bahan bakar gas nasional. DME memiliki fungsi
utama sebagai pengganti LPG konvensional. Rencana lokasi
pendirian pabrik dipilih Sepanjang, Sidoarjo, karena
ketersediaan bahan baku, kemudahan transportasi dan sumber air.
DME dari limbah PET dibuat dengan proses sintesa
langsung melalui 6 tahap. Tahap pertama untuk memperkecil
ukuran dan menghilangkan impurities. Tahap kedua untuk
mengubah bahan baku dari fase padat menjadi fase gas pada
temperatur 950ºC dan tekanan 34 bar. Tahap ketiga untuk
menambah kuantitas gas H2 dengan proses water gas shift
reaction. Tahap keempat yaitu memisahkan gas dan H2O sisa
pada alat separator. Tahap kelima yaitu mereaksikan CO dan H2
pada temperatur 250ºC dan tekanan 50 bar untuk menghasilkan
DME. Tahap terakhir yaitu pemurnian DME dengan cara
distilasi.
Pabrik DME bekerja secara kontinyu dan beroperasi
selama 330 hari/tahun dengan kapasitas produksi 10.000
ton/tahun. PET yang dibutuhkan sebesar 18.939 kg/hari.
Kebutuhan utilitasnya adalah air sanitasi, air umpan boiler, air
proses dan air make up masing-masing sebesar 7,17; 294,646;
1099,352 dan 58,929 m3/jam.

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Import of LPG indicates an increase every year, it is
planned to set up factories to fulfill the national needs of the LPG.
DME has a primary function as a substituent for LPG. Location
plan of the establishment of the factory in Sepanjang, Sidoarjo,
because of the availability of selected raw materials, ease of
transportation and water source.
DME from waste PET is made with the direct synthesis
process through 6 stages. The first stage to minimize the size and
eliminate impurities. The second stage is to change the material
phase from solid to gas at temperature of 950 C and a pressure of
34 bar. third stage to increase the amount of H2 by water gas shift
reaction. The fourth stage is separating the gas from the water.
The fifth stage is reacting CO and H2 to produce DME at
temperature 250 C and 50 bar pressure. The last stage is DME
purification by distillation process.
The DME factory worked continuously and operates
over 330 days/year with production capacity 10,000 tons/year.
PET waste is needed 18,939 kg/day. Needs of utility is the water
sanitation, boiler feed water, process water and water make up
each amounting to 7.17; 294,646; 1099,352 and 58,929 m3/hour.

Item Type:	Thesis (Diploma)
Additional Information:	RSK 661.84 Zul p
Uncontrolled Keywords:	DME; limbah PET; direct synthesis; waste PET; Direct synthesis
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Industrial Technology > Chemical Engineering > 24401-(D3) Diploma 3
Depositing User:	Anis Wulandari
Date Deposited:	22 May 2017 08:23
Last Modified:	27 Dec 2017 02:27
URI:	http://repository.its.ac.id/id/eprint/41344

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