کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6632254 | 1424948 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gasification of dried sewage sludge using an innovative three-stage gasifier: Clean and H2-rich gas production using condensers as the only secondary tar removal apparatus
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Air gasification of dried sewage sludge was performed in a new-type three-stage gasifier consisting of an auger, a fluidized bed, and a tar-cracking reactors. The study aimed to evaluate the possibility of gasification using only condensers for the secondary tar removal method. The effects of Ni- and Fe-impregnated active carbons on the quality of producer gas were also investigated. Finally, to investigate the deactivation behavior of active carbon, a spent active carbon obtained after about 4.3â¯h of gasification, was used again for approximately 3.7â¯h of gasification. The active carbons used effectively reduced the contents of condensed and gaseous tars. Ni-impregnated active carbon produced a gas with a high H2 content (26â¯vol%) and a low NH3 content (198â¯ppmv), while Fe-impregnated active carbon produced a gas with a low H2S content (96â¯ppmv). The compositions of the producer gases obtained solely using condensers were similar to those obtained using electrostatic precipitator. During the total â¼8â¯h of gasification, active carbon could efficiently remove tar; however, its surface area and total pore volume slowly decreased with time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 216, 15 March 2018, Pages 810-817
Journal: Fuel - Volume 216, 15 March 2018, Pages 810-817
نویسندگان
Young-Kon Choi, Ji-Ho Ko, Joo-Sik Kim,