کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
207577 461220 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Formation of NOx precursors during wheat straw pyrolysis and gasification with O2 and CO2
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Formation of NOx precursors during wheat straw pyrolysis and gasification with O2 and CO2
چکیده انگلیسی

The release behavior tests of NOx precursors from wheat straw during pyrolysis in argon and gasification in 5%O2/95%Ar and 5%CO2/95%Ar were performed using a thermogravimetric analyzer (TGA) coupled with a Fourier transform infrared (FTIR) spectrometer. The results show that heating rate and particle size have substantial effects on the selectivity of N-conversion due to the selectivity of cracking of cyclic amides and the secondary reaction influencing the formation of NH3, HCN and HNCO. The atmosphere influences the N-selectivity to HCN, NH3, NO and HNCO. The formation of HCN and NH3 in 5%O2/95%Ar is a result of competition among the opposing effects of O2. The presence of O2 promotes the yields of HCN and HNCO evidently, and HNCO seems to be a favourable product from biomass-N compared in Ar atmosphere although HCN yield is a little bigger than that of HNCO. The use of CO2 reduces the formation of HCN, the yield of NH3 keeps essentially constant compared in Ar, and the emission of HNCO is suppressed. NH3 seems to be a favourable product from biomass-N in 5%CO2/95%Ar.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 89, Issue 5, May 2010, Pages 1064–1069
نویسندگان
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