2 results about "Coal pipeline" patented technology

The invention relates to a method and device for improving the output of a coal mill based on a lignite coal pulverizing system. The device for improving the output of the coal mill based on the pulverizing system comprises that a grinding disc is arranged in the coal mill; nozzles are arranged on the periphery of the grinding disc; a grinding roller is arranged at the upper end of the grinding disc; one end of a high-temperature superheated steam pipeline is connected with a steam turbine, the other end of the high-temperature superheated steam pipeline penetrates through the cylinder wall ofthe coal mill, and then the other end of the high-temperature superheated steam pipeline is introduced into a grinding area of the grinding disc through a grinding roller gap; a valve is arranged onthe high-temperature superheated steam pipeline; and a primary fan conveys hot primary air into the coal mill through a primary air duct. According to the method and the device, raw coal is instantlyheated by using high-temperature superheated steam, and the temperature of the raw coal can be increased by 10-20 DEG C. Under the premise of ensuring the normal air-powder ratio, the outlet temperature can also be ensured, so that the drying output problem of burning lignite is solved. The combustion efficiency of a boiler is improved, meanwhile, the abrasion of related equipment of the pulverizing system and a pulverized coal pipeline is reduced, and the operation safety of the pulverizing system is improved.