کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6632621 1424952 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling study of residence time of molten slag on the wall in an entrained flow gasifier
ترجمه فارسی عنوان
مطالعهی مدلسازی زمان اقامت سرباره مذاب بر روی دیوار در یک گسیفایزر جریان جابجایی
کلمات کلیدی
گازسیون، سرباره زغال سنگ، زمان اقامت، مدل جریان
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
In an entrained flow coal gasifier, the slag viscosity property is of great importance to the slagging process. The slag viscosity is affected by the crystal mineral and the crystallization process has a time effect. The molten slag residence time in gasifier was calculated by slag flow model to estimate the isothermal time or crystal growth time during the cooling process. The residence times of tracer slag unit were calculated by the slag velocity. The residence time distribution (RTD) curve was obtained and the mean residence time was about 100-500 s in this study. Moreover, the molten slag mean residence time decreases significantly with increasing ash contents in coal, decreases slightly with increasing operating temperatures, and increases with increasing slag critical viscosities and temperatures. In addition, a plug flow reactor (PFR) series a similar laminar flow tubular reactor model was used to analysis the RTD curves of molten slag with different operating conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 212, 15 January 2018, Pages 437-447
نویسندگان
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