کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6476671 1425390 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study on the interaction between CaO-based sorbents and coal ash in calcium looping process
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Study on the interaction between CaO-based sorbents and coal ash in calcium looping process
چکیده انگلیسی


- Effect of coal ash on CaO-based sorbents was comprehensively studied.
- Identification of key factors in the interaction of coal ash and sorbents.
- Explanation of interaction mechanism between sorbents and coal ash.

Calcium looping (CaL), implemented via cyclic carbonation and calcination of calcium-based sorbents, is a novel and promising technology in reducing emissions of CO2 into the atmosphere. The reactivity of CaO is important in calcium looping, but its CO2 sorption will be affected by the presence of ash deriving from coal combustion in the calciner. We report here, the investigation of influence of coal-derived ash on CaO-based sorbents using a thermogravimetric analyzer and a combination of other techniques. As a result of this work, our understanding of the role of several key variables (sorbent type, ash content and its particle size, the calcination conditions) and how they interact during repeated cycles of CO2 sorption and desorption, has been greatly enhanced. Furthermore, an attempt was made to explain the interaction mechanism between sorbents and coal-derived ash. It is proposed that the blockage of pores blow 3 nm due to ash deposition and subsequent grains agglomeration are the main reason for CaO-based sorbents' loss in CO2 carrying capacity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel Processing Technology - Volume 156, February 2017, Pages 339-347
نویسندگان
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