Cement plant with the device monitoring device and the powder

摘要

PROBLEM TO BE SOLVED: To provide a highly reliable monitoring device for powder allowing highly precise measurement all the time, and a cement plant provided with the device.;SOLUTION: In this monitoring device for the powder provided with an LIBS device 4b equipped in a midway of piping for the powder, for emitting a laser beam toward the powder flowing in the piping to bring each composition component into plasma and to make plasma light generated from the plasma get incident into a spectroscope, and for identifying the composition component and for measuring a concentration of the component, based on a difference in an emitted light wavelength in spectral lights separated into spectral components by the spectroscope, the powder pneumatically transported by air sucked by a feed blower 31 to make the powder flow nonblockedly through a measuring part 22 irradiated with the laser beam, a pressure sensor 34 for detecting pipe inside pressure in a measuring part 32 is attached to the part, an exhaust blower 33 provided in the piping in a downstream of the measuring part 32 is feedback-controlled by an inverter 35 for inputting a detection signal of the pressure sensor 34, and the pipe inside pressure is kept thereby in constant negative pressure all the time.;COPYRIGHT: (C)2002,JPO