Overview of Low-Rank Coal (LRC) Drying
Overview of Low-Rank Coal (LRC) Drying
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DOI：
10.1080/07349349708905135
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
W. Willson;D. Walsh;W. Irwinc
中科院分区：
文献类型：
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作者：
W. Willson;D. Walsh;W. Irwinc
摘要 低阶煤（LRC）干燥工艺通常按操作温度、干燥环境以及进料或产品类型进行分类。在这些大类中，干燥工艺根据干燥设备的类型以及淬火和稳定干燥产品的方法而进一步不同。本文重点讨论了一些商业化或已中试规模的 LRC 干燥工艺生产的产品质量问题，包括低温和高温蒸发干燥以及非蒸发工艺，例如水热干燥。蒸发工艺通常成本最低，并且在干燥产品立即使用时优选。这避免了 LRC 运输和长期储存时出现的水分重吸收、粉尘产生和自燃问题。随后进行水热干燥。低阶煤水燃料生产是消除稳定性问题最有前途的技术之一，同时生产......
Abstract Low-rank coal (LRC) drying processes are generally categorized by operating temperature, drying environment, and type of feed or product. Within these broad categories, drying processes differ further according to the type of drying equipment and methods of quenching and stabilizing dried products. This paper focuses on the issue of the quality of products produced from a number of LRC drying processes that are commercial or have been demonstrated at a pilot-scale, including low and high temperature evaporative drying and non-evaporative processes, such as hydrothermal drying. Evaporative processes are usually the lowest cost and are preferred when the dried product is used immediately. This avoids the problems of moisture reabsorption, dust generation and spontaneous combustion associated with LRC transportation and long term storage. Hydrothermal drying followed by. low-rank coal-water fuel production is one of the most promising techniques for eliminating stability problems, while producing a ...