Medium-speed coal mill static separator with real-time adjustment function

Abstract

The invention discloses a medium-speed coal mill static separator with a real-time adjustment function. All separator baffles are divided into a plurality of groups, each group of separator baffles corresponds to one electric control system, and each separator baffle corresponds to one baffle adjusting mechanism. Each baffle adjusting mechanism comprises a central shaft. Each electric control system comprises a controller, a signal source and an angular travel actuator. The output end of an external DCS control system is connected with the input ends of the controllers through the signal sources. The output end of each controller is connected with the control end of the corresponding angular travel actuator. An output shaft of each angular travel actuator is connected with the central shaft of one baffle adjusting mechanism. The central shafts of the baffle adjusting mechanisms corresponding to the separator baffles in the same group are connected through an adjusting connecting rod, and the lower ends of the central shafts penetrate through the top of a coal mill separator shell to be connected with the corresponding separator baffles. The separator can achieve real-time adjustment of the fineness of pulverized coal at an outlet of a coal mill, and the energy-saving effect is good.

Description

technical field [0001] The invention relates to a coal pulverizer static separator, in particular to a real-time adjustable medium-speed coal pulverizer static separator. Background technique [0002] At present, the sources of coal combustion in power plants are complex, and the coal combustion of boilers varies greatly and frequently. During the operation of boilers, it is necessary to continuously adjust the fineness of pulverized coal according to changes in coal quality, so as to make boiler combustion more complete and economical, and ensure boiler operation safety. Adjusting the separator according to the actual coal quality into the furnace, and changing the fineness of pulverized coal at the outlet of the coal mill can effectively solve the problems of increased carbon content in fly ash, increased exhaust gas temperature, and increased desuperheating water caused by changes in coal quality. The problems of burning out burner nozzles and coking of furnace water wall...

AI Technical Summary

Problems solved by technology

However, due to the large adjustment workload, poor site environment, and jamming of the adjustment baffle, it is impossible to effectively adjust the fineness of pulverized coal in actual operation.

The dynamic separator can effectively solve the above problems, and real-time adjustment of coal fineness can be realized in a remote place, but it also has problems such as complex equipment, high cost, and difficult maintenance, and a large number of test data show that the dynamic separator has no The expected effect of increasing the output of the coal mill, the dynamic separator uses the motor to drive the rotor to separate the coal powder, and there is still a certain amount of waste of electricity

Images