کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8869656 | 1622609 | 2018 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Production of benzene/toluene/ethyl benzene/xylene (BTEX) via multiphase catalytic pyrolysis of hazardous waste polyethylene using low cost fly ash synthesized natural catalyst
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
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چکیده انگلیسی
The valuable aromatics benzene, toluene, ethyl benzene and xylene (BTEX) were effectively produced from waste polyethylene (PE) using fly ash synthesized catalyst. The BTEX yield was enhanced significantly using multiphase catalytic pyrolysis of polyethylene. Low cost natural catalyst was synthesized from fly ash (FA) in 5 different synthesized form i.e., fly ash in natural form (FAN), fly ash calcined at 600â¯Â°C (FA-600), 700â¯Â°C (FA-700), 800â¯Â°C (FA-800) and 900â¯Â°C (FA-900). The thermal and catalytic pyrolysis both were conducted in a specially designed semi-batch reactor at the temperature range of 500-800 °C. Catalytic pyrolysis were performed in two different phases within the reactor batch by batch systematically, keeping the catalyst in a liquid phase (A-Type) and liquid and vapor phase/multiphase (B-Type), respectively. The maximum liquid yield of 78.20â¯wt% was obtained at a temperature of 700â¯Â°C using FA-800 catalyst in A-type arrangement. Total aromatics (BTEX) of 10.92â¯wt% was obtained for thermal pyrolysis at a temperature of 700â¯Â°C. In contrary, the aromatic (BTEX) contents were significantly increased for the catalytic pyrolysis in both reactor arrangement A and B types, nearly doubled from 10.92â¯wt% (thermal pyrolysis) to 21.34â¯wt% for A-type and 22.12â¯wt% for B type/multiphase. The pyrolysis oil was characterized using GC-FID, carbon residue test and other fuel testing methods to evaluate the suitability of its end use and aromatic content.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Waste Management - Volume 77, July 2018, Pages 114-130
Journal: Waste Management - Volume 77, July 2018, Pages 114-130
نویسندگان
Pramendra Gaurh, Hiralal Pramanik,