Coal granule drying process and apparatus

• Main Authors: LI DAYONG, CHEN GANG, ZHAO JINGKUAN, ZHANG YI, LIU LIZHI, LIU LIANXIANG, LI CHUNQI, ZHANG GUOHUA
• Format: Patent
• Language: Chinese; English
• Published: 20.02.2008
• Subjects: BLASTING; DRYING; DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; WEAPONS

The utility model relates to a drying technology of coal powder, which comprises following steps: (1) pre-drying coal lumps; (2) transporting the pre-dried coal lumps to a crusher for crushing, making the diameter of the crushed coal powder at 3 to 10 mm; (3) transporting the coal powder to a tubular dryer and heating the coal powder by a heater with hot steam; (4) rotating the tubular dryer and introducing airflow so as to take out the steam spent after heating dust and coal powder; (5) collecting the coal powder which come out from the tubular dryer directly for use; (6) introducing the dust and the spent steam brought out by the carrying air to a dust treatment system. The utility model also provides a drying equipment of coal powder and can dry lignite coal powder using the drying technology of the utility model. The utility model has advantages of simple drying technology process, reliable operation of the drying device, and high efficiency, and also the application to industries such as other coal types