CD Skripsi

Executive Summary Rancangan Pabrik Dimetil Eter Proses Direct Dari Gas Alam Dengan Desain Alat Utama Reaktor Dimetil Eter (R-102)

---

Design of a Direct Dimethyl Ether (DME) Plant from Natural
Gas with the Main Equipment Design of
Dimethyl Ether Reactor (R-102)
Nadiyah Nesa Syakdiyah
ABSTRACT
Dimethyl Ether (DME) is a simple ether compound used as a raw material in industry and as
a fuel. DME is a colorless, odorless gas that is soluble in water and oil. It is non-carcinogenic,
nonteratogenic, non-mutagenic, and non-toxic. It exhibits environmentally friendly properties
because its combustion does not produce sulfuric acid (SOx) and smoke, and produces very low
levels of NOx, CO, and particulate matter. Global demand for dimethyl ether in 2024 was
reported to be 824,021 tons per year. In 2021, DME demand in Indonesia increased by 26,834
tons per year. This demonstrates the significant demand for DME by the Indonesian and global
communities, leading to the construction of a factory with a production capacity of 30,000 tons
per year. The factory is planned to be built in the Bontang industrial area, South Bontang
District, Bontang City, East Kalimantan Province.
The production of Dimethyl Ether begins with the synthesis of methanol from syngas,
followed by the dehydration of methanol into Dimethyl Ether in a single reactor, namely the
DME Reactor (R-102), using a copper–zinc–alumina (CuO–ZnO–Al₂O₃) catalyst that
achieves a conversion rate of 95%. The reactor has a diameter of 0.91 m, a shell height of 3.66
m, and contains 146 tubes with a diameter of 1.9 inches and a tube pitch of 0.32 inches, with a
head height of 0.3 m, resulting in a total reactor height of 4.62 m. Subsequent processes include
separation and purification using a separator and a distillation column. The water source for
the Dimethyl Ether plant is seawater from Lallo, East Kalimantan, which is demineralized to
meet the plant’s operational requirements. The total electrical power requirement of the plant is
890.17 kW after accounting for a 20% overdesign factor. The waste generated consists of liquid
and gaseous waste, both of which are treated before being discharged into the sea, while solid
waste is managed in cooperation with a licensed third-party hazardous waste (B3) management
company. The instrumentation system used in the Dimethyl Ether plant includes measuring
devices (sensors), indicators, controllers, alarms, and recorders, with monitored variables
including temperature, flow rate, pressure, and liquid level.
The Dimethyl Ether plant has a fixed capital investment of Rp. 1,678,394,112,571,
and a working capital investment of Rp. 251,759,116,886 and total production cost of
Rp.1,896,873,320,717. The resulting product is sold with revenue of Rp. 2,442,330,112,104 per
year. Profitability analysis shows a net present value of Rp. 2,476,034,419,768 with a discount
in the form of an internal rate of return of 20.15%, a break-even point at a production capacity
of 43.64%, and a payback period of 3.3 years. Based on these results, the design of a dimethyl
ether plant from natural gas is considered feasible to be established and is a profitable
investment.
Keywords: Economic Analysis, DME, Direct synthesis, Syngas

---

Ketersediaan

Informasi Detail

Judul Seri

-

No. Panggil

2107111245

Penerbit

Pekanbaru : Universitas Riau – F.TEKNIK – kimia., 2024

Deskripsi Fisik

-

Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

2107111245

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

TEKNIK KIMIA

Info Detail Spesifik

-

Pernyataan Tanggungjawab

daus

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar