کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4764083 1423374 2017 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Elevating the flexibility and operability of dividing-wall distillation columns via feed thermal condition adjustment
ترجمه فارسی عنوان
ارتقاء قابلیت انعطاف پذیری و کارایی ستون های تقطیر دیواره از طریق تنظیم وضعیت حرارتی خوراک
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Because of the complicated interplay between the prefractionator and main distillation column involved, the black-hole problem might occur and prohibit the assignment of four specifications to dividing-wall distillation columns (DWDCs) (e.g., the three main product compositions plus an impurity ratio in the intermediate product), which lowers terribly process flexibility and operability. In this paper, a feed thermal condition adjustment strategy, achieved by the installation of a pre-heater in feed pipeline, is employed to eliminate the black-hole problem and serve to enhance process flexibility and operability. Through the strong influence to the overall mass and energy balance of the DWDC, the feed thermal condition adjustment can alter the interlinking flows between the thermally coupled prefractionator and main distillation column and work effectively to coordinate their relationship. A DWDC separating a benzene, toluene, and o-xylene mixture is chosen to ascertain the feasibility of the philosophy proposed. The static and dynamic studies demonstrate that the feed thermal condition adjustment is an effective way to refine process design and can completely eliminate the black-hole problem and elevate consequently process flexibility and operability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Chemical Engineering - Volume 25, Issue 7, July 2017, Pages 947-954
نویسندگان
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