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2. 发明授权

US5361513A Method and apparatus for drying and briquetting coal 失效
标题翻译：干燥和压块煤的方法和设备
公开(公告)号：US5361513A
公开(公告)日：1994-11-08
申请号：US981620
申请日：1992-11-25
申请人： Paul W. Woessner
发明人： Paul W. Woessner
IPC分类号： C10L5/02 , C10L9/00 , F26B3/084 , F26B3/08 , F26B17/00
CPC分类号： F26B3/084 , C10L5/02 , C10L9/00
摘要： The subject invention is an integrated process for economically drying and briquetting coal to produce strong briquettes. The subject invention utilizes a conditioner to output dried coal having a selected moisture content and temperature and mean particle size and size distribution for briquetting. The conditioner reduces the moisture content of coal particles by contacting them with steam. The preferred conditioner fluidizes a bed of coal particles with steam generated during the coal drying process. The moisture content of the dried coal is in the form of steam which fills the pores and inter-particle void spaces of the coal particles. The moisture content of the dried coal is controlled by supplying heat to heat exchange tubes in the coal bed in response to coal bed temperature. The bed temperature is related to the moisture content of the dried coal. The dried coal is sealed from the atmosphere and conveyed at isothermal conditions to the briquetter to maintain the coal temperature and moisture content constant. During briquetting, the steam in the particles' pores and inter-particle void spaces is condensed into water, collapsing the pore structures and filling the pores and inter-particle void spaces in the coal particles with water. This action produces a high density briquette which is resistant to moisture reabsorption and spontaneous combustion.
摘要翻译：本发明是用于经济干燥和压块煤以产生强压块的综合方法。本发明利用调节剂来输出具有选定的水分含量和温度的干燥煤，以及用于压块的平均粒度和尺寸分布。调理剂通过与蒸汽接触来降低煤颗粒的含水量。优选的调理剂在煤干燥过程中产生的蒸汽使煤颗粒床流动。干燥煤的水分含量是蒸汽填充煤颗粒的孔隙和颗粒间空隙的形式。通过根据煤层温度向煤层中的热交换管供热，控制干燥煤的含水量。床温与干燥煤的含水量有关。将干燥的煤从大气中密封并在等温条件下输送到压块机，以保持煤的温度和水分含量恒定。在压块过程中，颗粒细孔和颗粒间空隙空间中的蒸汽被冷凝成水，使孔结构塌陷，并用水填充煤颗粒中的孔隙和颗粒间空隙。该作用产生耐高度吸湿和自燃的高密度团块。

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