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DESCRIPTION
vTRANSCRIPT
LAPORAN KERJA PRAKTEK
PT POLYCHEM INDONESIA TBK. DIVISI KIMIA-MERAK
MEMBUAT DESAIN HEAT EXCHANGER TAMBAHAN SEBAGAI
TINDAK LANJUT TERHADAP PENYIMPANGAN SUHU OUTPUT E-312
PLANT EO/EG II
Disusun Oleh:
Yono Purnama (03111003093)
Vera Sugi Lestari (03111003101)
JURUSAN TEKNIK KIMIA FAKULTAS TEKNIK
UNIVERSITAS SRIWIJAYA
2015
KATA PENGANTAR
Puji syukur kepada Allah SWT yang telah memberikan berkat dan rahmat–
Nya sehingga Laporan Kerja Praktek di PT Polychem Indonesia, Tbk. ini dapat
diselesaikan. Laporan kerja praktek ini disusun untuk memenuhi syarat kurikulum
semester VII pada mata kuliah Kerja Praktek di Jurusan Teknik Kimia, Fakultas
Teknik, Universitas Sriwijaya.
Laporan Kerja Praktek ini memuat informasi mengenai PT Polychem
Indonesia Tbk. Divisi Kimia-Merak secara umum serta Tugas Khusus yang
berjudul “Membuat Desain Heat Exchanger Tambahan Sebagai Tindak Lanjut
Terhadap Penyimpangan Suhu Output E-312 Plant EO/EG II”.
Dalam penulisan laporan kerja praktek ini, banyak diperoleh masukan dan
dukungan dari banyak pihak baik secara langsung maupun tidak langsung. Oleh
sebab itu, dalam kata pengantar ini secara khusus diucapkan terimakasih kepada:
1. Bapak Purwantyana selaku Production Manager di PT Polychem Indonesia,
Tbk. Divisi Kimia-Merak;
2. Bapak Anthan Tito, Achmad Irfani, Eko Rianto, Ahmad Shiddiq, dan Endar
Prasteyo selaku pembimbing lapangan kegiatan kerja praktek;
3. Keluarga dan rekan-rekan sejawat atas doa dan dukungannya.
Cilegon, 30 Januari 2015
Penulis
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DAFTAR ISI
Halaman Judul .................................................................................................
Kata Pengantar ................................................................................................i
Daftar Isi ........................................................................................................ii
Daftar Gambar ...............................................................................................v
BAB I PENDAHULUAN .............................................................................1
1.1.................................................................................Latar Belakang
.......................................................................................................1
1.2........................................................................Perumusan Masalah
.......................................................................................................2
1.3......................................................................Tujuan Kerja Praktek
.......................................................................................................2
1.4........................................................Ruang Lingkup Kerja Praktek
.......................................................................................................3
1.5.............................................................Metode Pengumpulan Data
.......................................................................................................3
1.6..............................................................Pelaksanaan Kerja Praktek
.......................................................................................................3
BAB II TINJAUAN UMUM PERUSAHAAN .............................................4
2.1.........................................................................Sejarah Perusahaan
.......................................................................................................4
2.2.................................................Lokasi dan Tata Letak Perusahaan
.......................................................................................................5
2.2.1.................................................................Lokasi Perusahaan
..............................................................................................5
2.2.2...........................................................Tata Letak Perusahaan
..............................................................................................6
2.3......................................................Struktur Organisasi Perusahaan
.......................................................................................................7
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2.4...............................................................................Peraturan Kerja
.......................................................................................................8
2.5......................................................................Visi Misi Perusahaan
.......................................................................................................8
2.6..................................................Kesehatan dan Keselamatan Kerja
.......................................................................................................9
2.7...............................................................Segi Ekonomi Perusahaan
.....................................................................................................13
2.7.1................................................................Struktur Pemodalan
............................................................................................13
2.7.2..............................................................Struktur Pembiayaan
............................................................................................14
2.7.3...............................................................Struktur Pendapatan
............................................................................................15
BAB III PROSES PRODUKSI DI PLANT EO/EG.....................................16
3.1...............................................................................................Bahan
.....................................................................................................16
3.1.1..............................................................................Bahan baku
............................................................................................16
3.1.2....................................................................Bahan penunjang
............................................................................................17
3.2..................................................................................Sistem proses
.....................................................................................................19
3.2.1.Reaksi pembentukan etilen oksida dan scrubbing (Area 100)
............................................................................................20
3.2.2..............................................CO2 removal system (Area 200)
............................................................................................25
3.2.3..............................Ethylene oxide enriching area (Area 300)
............................................................................................28
3.2.4...........................................Sistem pemurnian EO (Area 400)
............................................................................................30
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3.2.5.......................Pembentukan dan evaporasi glikol (Area 500)
............................................................................................32
3.2.6.......................Pengeringan dan pemurnian glikol (Area 600)
............................................................................................36
3.2.7....................Pemisahan fraksi berat glikol (Area 600 & 700)
............................................................................................38
3.3.............................................................................................Produk
.....................................................................................................41
BAB IV TUGAS KHUSUS: MEMBUAT DESAIN HEAT EXCHANGER
TAMBAHAN SEBAGAI TINDAK LANJUT TERHADAP PENYIMPANGAN
SUHU OUTPUT E-312 PLANT EO/EG II..................................................45
4.1...................................................................................Pendahuluan
...................................................................................................45
4.1.1....................................................................... Latar belakang
............................................................................................45
4.1.2................................................................. Rumusan masalah
............................................................................................46
4.1.3................................................................................... Tujuan
............................................................................................46
4.1.4.................................................................... Batasan masalah
............................................................................................46
4.1.5.................................................................................. Manfaat
............................................................................................46
4.2............................................................................ Tinjauan Pustaka
...................................................................................................47
4.2.1................................................. Plate heat exchanger (PHE)
............................................................................................47
4.2.1.1............................... Kunggulan dan kelemahan PHE
................................................................................48
4.2.1.2......................................... Prosedur merancang PHE
................................................................................49
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4.3......................................Perancangan Heat Exchanger Tambahan ...................................................................................................504.3.1.................................................. Tahap-tahap perancangan
.........................................................................................524.3.2....................................................................... Perancangan
........................................................................................54 4.3.3........................................................ Hasil dan pembahasan
.........................................................................................664.4.................................................................. Kesimpulan dan Saran
...................................................................................................684.4.1........................................................................... Kesimpulan
............................................................................................684.4.2..................................................................................... Saran
............................................................................................68
BAB V KESIMPULAN DAN SARAN ......................................................695.1.....................................................................................Kesimpulan
.....................................................................................................695.2...............................................................................................Saran
.....................................................................................................69Daftar Pustaka ..................................................................................................
Lampiran ..........................................................................................................
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DAFTAR GAMBAR
Gambar 2.1. Citra Satelit Lokasi PT Polychem Indonesia Tbk. Divisi Kimia-
Merak.........................................................................................6
Gambar 2.2. Tata Letak PT Polychem Indonesia Tbk. Divisi Kimia – Merak
....................................................................................................6
Gambar 2.3. Struktur Organisasi PT Polychem Indonesia Tbk. Divisi Kimia –
Merak (Terlampir)
Gambar 3.1. PFD Area 100 (Terlampir)
Gambar 3.2. Reaksi Utama dan Reaksi Samping Pembentukan Etilen Oksida
..................................................................................................23
Gambar 3.3. PFD Area 200 (Terlampir)
Gambar 3.3. PFD Area 300 (Terlampir)
Gambar 3.5. PFD Area 400 (Terlampir)
Gambar 3.6. PFD Pelucutan Umpan dan Reaksi Pembentukan Glikol (Area 500
A) (Terlampir)
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Gambar 3.7. PFD Pemekatan Glikol (Area 500B) (Terlampir)
Gambar 3.8. PFD Pemekatan Glikol (Area 500C)(Terlampir)
Gambar 3.9. PFD Pengeringan dan Pemurnian Glikol (Terlampir)
Gambar 3.10. PFD Pemisahan Fraksi Berat Glikol (Area 600 & 700) (Terlampir)
Gambar 3.11. Produk Monoetilen Glikol (MEG).........................................42
Gambar 3.12. Produk Dietilen Glikol (DEG)...............................................43
Gambar 3.13. Produk Trietilen Glikol (TEG)...............................................44
Gambar 4.1. Gasketed Plate Heat Exchanger..............................................47
Gambar 4.2. PFD (sebagian) Area 300 Sebelum Penambahan PHE (sesuai data
DCS) .......................................................................................51
Gambar 4.3. PFD (sabagian) Area 300 Sebelum Kalkulasi Penambahan HE
..................................................................................................51
Gambar 4.4. Grafik Log Mean Temperature Correction Factor untuk PHE
.................................................................................................59
Gambar 4.5. PFD (sebagian) Area 300 Setelah Kalkulasi Penambahan PHE
..................................................................................................68
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