公开(公告)号：US20110167668A1

公开(公告)日：2011-07-14

申请号：US12987768

申请日：2011-01-10

申请人： Xu ZHAO ,  Yinghai LI ,  Yan DOU ,  Yongfei YUE ,  Zhongfu ZHAN ,  Jinwen SHI

发明人： Xu ZHAO ,  Yinghai LI ,  Yan DOU ,  Yongfei YUE ,  Zhongfu ZHAN ,  Jinwen SHI

IPC分类号： F26B7/00 ,  F26B3/02

CPC分类号： F26B11/04 ,  C10L9/00

摘要： The present invention relates to A drying process for drying lignite by swashing dust collection and washing, comprising steps of: conveying wet powdered coal into a dryer by a feed belt so as to be dried; introducing hot steam for drying via a rotary joint at an outlet end of the dryer and into a heat exchange tube via a steam chamber; having the wet powdered coal contact and heat exchange with a steam pipe and dried; discharging the dried coal from an discharge port and conveying the dried coal to a subsequent station by a discharging belt; introducing condensed water resulted from steam heat exchange into a condensate pot via a rotating joint and then conveying the condensed water to a next station via a condensate pump; performing a primary dust collecting in a bin at a tail end of the dryer on waste gas produced during the drying process, discharging the waste gas from a top end of the bin and the introducing the waste gas into a swashing dust collector; discharging waste liquid resulted from washing the waste gas from a bottom of the swashing dust collector, conveying the waste liquid discharged from the swashing dust collector via a waste liquid pump. In the present invention, lignite is dried with steam latent heat, and the dried waste gas is washed by a gravity settlement and swashing dust collection so as to assure that the waste gas is discharged after reaching a standard value and avoid the risk of taking fire and explosion occurred in a dry-type dust collecting way.

摘要翻译： 本发明涉及通过粉尘收集和洗涤来干燥褐煤的干燥方法，包括以下步骤：通过进料带将湿粉煤输送到干燥机中以进行干燥; 通过干燥器的出口端处的旋转接头引入热蒸汽以通过蒸汽室进入热交换管; 与湿粉煤接触并与蒸汽管进行热交换并干燥; 从排出口排出干燥的煤，并通过排放带将干燥的煤输送到后续的站; 引入通过旋转接头将蒸汽热交换到冷凝罐中的冷凝水，然后经由冷凝泵将冷凝水输送到下一站; 在干燥过程中产生的废气上，在干燥机尾端的垃圾箱内进行一次粉尘收集，从垃圾箱的顶端排出废气，并将废气引入粉碎集尘器; 从排出的集尘器的底部清洗废气而排出的废液通过废液泵输送从排出的集尘器排出的废液。 在本发明中，褐煤用蒸汽潜热干燥，干燥废气通过重力沉降和粉尘收集来洗涤，以确保废气在达到标准值后排出，避免发生火灾的风险 爆炸发生在干式集尘方式。