کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8075692 1521465 2015 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimization of a lignite-fired open pulverizing system boiler process based on variations in the drying agent composition
ترجمه فارسی عنوان
بهینه سازی فرایند بویلر سیستم پودر باز شونده از چوب بر اساس تغییرات در ترکیب مواد خشک کننده
کلمات کلیدی
سنگ قیمتی، فرایند تولید برق بویلر، سیستم کشش باز بازیابی آب ذخیره انرژی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی
This paper evaluates three lignite-fired OPSB (open pulverizing system boiler) processes, named OPSB-A, OPSB-B and OPSB-C, corresponding to three options of drying agents used for the pulverizing systems. OPSB-B is similar to our previous work [18] on drying agent composition. Performances of the three OPSBs were calculated and compared with a 600 MW lignite-fired boiler as the reference. The results showed that the coal savings of OPSB-A and OPSB-C were 5.41% and 4.06% in comparison with the reference boiler, whereas for OPSB-B, the savings was 2.57%. Accordingly, emissions of each OPSB could be reduced in proportion to the coal savings. Among the three OPSBs, OPSB-C showed the best performance of water recovery from mill-exhausts because it had the highest mill-exhaust water dew point of 73.2 °C, whereas the exhaust dew points of OPSB-A and OPSB-B were 63.9 °C and 70.9 °C, respectively. Both OPSB-C and OPSB-B are beneficial for achieving a high mill-exhaust humidity ratio, which facilitates water recovery from the mill-exhaust, and a low oxygen content in mill-exhaust, which improves the operating safety of the pulverizing systems, whereas OPSB-A is relatively inferior in these respects. The OPSB-C process is recommended for engineering applications because of its favorable overall performances.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 81, 1 March 2015, Pages 304-316
نویسندگان
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