Review_UOP Patent_PRODUCTION OF DIESEL FUEL FROM RENEWABLE FEEDSTOCKS WITH REDUCED HYDROGEN...
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Transcript of Review_UOP Patent_PRODUCTION OF DIESEL FUEL FROM RENEWABLE FEEDSTOCKS WITH REDUCED HYDROGEN...
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PRODUCTION OF DIESEL FUEL FROM RENEWABLE FEEDSTOCKS
WITH REDUCED HYDROGEN CONSUMPTION
United States Patent No. : US 7999143 B2Date of patent : August 16, 2011
Inventors: Terry L. Marker (US); Peter Kokayeff (US); Giovanni Faraci (IT); Franco Baldiraghi (IT)
Assignees: UOP LLC (US); ENI S.p.A (IT)
Bambang Aditya N.A. (23012310)
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Source: U.S. Department of Energy, 2010
Bahan baku terbarukan:minyak sawit, jarak
pagar, zaitun, kanola, kecipir, karet, lemak
hewani
Paten US 2004/0230085 A1: proses produksi hidrokarbon melalui hidrodeoksigenasi yang dilanjutkan dengan
isomerisasi
Pada paten ini, Paten US 7999143 B2: menggunakan tahap hidrogenasi, dekarboksilasi, dekarbonilasi, dan/atau hidrodeoksigenasi serta isomerisasi pada bahan baku terbarukan
Reduksi konsumsi hidrogen
Aspek biaya
Pendahuluan
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Proses hidrogenasi dan hidrodeoksigenasi untuk mengkonversi bahan terbarukan (minyak nabati dan lemak hewani) menjadi hidrokarbon dengan rentang didih diesel (terutama C15-C18) membutuhkan konsumsi hidrogen yang tinggi, sehingga dibutuhkan suatu cara untuk mereduksi konsumsi hidrogen agar biaya produksi dapat dikurangi.
Permasalahan
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Tindak lanjut
Kehadiran air pada reaksi pencampuran menghasilkan produk berupa hidrogen dan selanjutnya dapat dikonsumsi pada reaksi hidrogenasi dan hidrodeoksigenasi, proses recycle yang terjadi dapat mereduksi penambahan hidrogen dari luar.
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Hidrodeoksigenasi & Hidrogenasi
H2
CO2
H2O
CO
Dekarboksilasi & Dekarbonilasi
Water Gas Shift Reaction
Hubungan antar reaksi
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Skema sederhana
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Reaktor Deoksigenasi & Hidrogen Stripper
Kondisi operasi:Tekanan: 689 kPa – 13790 kPa
Temperatur: 40 oC – 300 oC
Kondisi operasi:Tekanan: 689 kPa – 13790 kPa
Temperatur: 40 oC – 300 oC
Katalis:NiMo/Al2O3
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Reaktor Isomerisasi
Kondisi operasi:Tekanan: 689 kPa – 13.790 kPa
Temperatur: 40 oC – 400 oC
Katalis:Pt/Si-Al2O3
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Zona deoksigenasi
Feed Recycle H2
Produk liq. : parafin (9 – 18 atom C
Produk gas: H2, CO2, CO, H2O, propan, sulfur
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Zona Isomerisasi dan Stripper Hidrogen
Produk reaktor
deoksigenasi
Tambahan H2
Produk: parafin tanpa CO2, H2O menuju reaktor
isomerisasi
Produk recycle
Recycle H2
Hasil separasi produk gas: H2O,
CO, CO2 menuju Air cooler
Produk isomerisasi: branched paraffin
Recycle
produk
Produk isomerisasi + produk gas
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Zona Pemisahan Produk
Produk isomerisasi + produk gas
Recycle H2
CO2
H2ODiesel
Light HC (LPG,
Naphta)
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Skema lengkap
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Contoh eksperimen
Test A BPressure ; kPa 3372 3372Temperature ; 0C 320 321Water additionVol H2O/vol feed ; % - 0,625Vol H2O/vol Canola oil ; % - 2,5Yield CO 95 92Yield CO2 64 65Hydrogen Consumption ; SCF
1448 1376
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TERIMA KASIH
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Ringkasan penemuan (paten)
Perlakuan bahan pada zona reaksi dengan kehadiran 5%-30% massa air serta hidrogenasi dan deoksigenasi bahan baku pada kondisi operasi untuk memperoleh produksi reaksi pertama yang meliputi fraksi hidrokarbon berupa n-parafin.
Sesaat setelah karbon monoksida diproduksi oleh reaksi dekarbonilasi, karbon monoksida dan air bereaksi melalui water gas shift reaction menghasilkan karbon dioksida dan hidrogen.
Hidrogen yang dihasilkan untuk penggunaan reaksi hidrogenasi dan hidrodeoksigenasi.
Air dan karbon dioksida yang dihasilkan dari zona reaksi pertama diintegrasikan dengan stripper bertekanan dan bersuhu tinggi menggunakan hidrogen, produk kemudian dimasukkan pada zona hidroisomerisasi dan produk isomerisasi tercukupi.
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Contoh
Proses produksi parafin rantai cabang-rich diesel:
a. Penambahan 0,1 % - 30% massa air pada umpan bahan baku untuk zona reaksi pertama, % massa air pada umpan sudah termasuk dari recycle
b. Proses hidrogenasi dan deoksigenasi pada umpan bahan baku, konversi CO dan air menjadi karbon dioksida dan hidrogen menggunakan katalis (NiMo/Al2O3)
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Water Gas Shift Reaction
Merupakan reaksi yang melibatkan karbon monoksida dan air untuk menghasilkan hidrogen
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Hidrogenasi
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Dekarboksilasi dan Dekarbonilasi
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Isomerisasi
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