Patent ID: 7549382

Claim:
In a vertical coal pulverizer having a discharge turret for expelling pulverized coal particles, said discharge turret having with an inner wall and funnel-shaped outer wall with oblique slope, and plurality of pulverized coal outlet pipes leading outward from the outer wall of said discharge turret, a device for balancing and controlling the distribution of pulverized coal particles into the plurality of outlet pipes without substantially affecting the distribution of primary air flow, comprising: a plurality of adjustable coal-flow-diverting guide-vane flow control elements each being spaced upstream of a corresponding one of said plurality of outlet pipes within said discharge turret in a region of highly concentrated particle flow resulting from a phase separation between air and pulverized coal particle flows occurring within the discharge turret to alter trajectories of the pulverized coal particles within the discharge turret thereby altering flow rate of the pulverized coal flow into the corresponding outlet pipe, and each of said plurality of coal-flow-diverting guide-vane flow control elements comprising a plate having an angled edge positioned within said discharge turret of said pulverizer proximate said outer wall in a region of highly concentrated particle flow resulting from a phase separation between air and coal flows occurring within the discharge turret, and rotatable by at least +/−90 degrees along an axis running perpendicular to said corresponding outlet pipe from a vertical orientation in which said angled edge conforms to said oblique slope of said discharge turret outer wall to a horizontal position; a corresponding plurality of adjustment rods each pivotally seated in the outer wall of said discharge turret along an axis running perpendicular to said corresponding outlet pipe and each attached to one of said plurality of coal-flow-diverting guide-vane flow control elements; and said corresponding plurality of adjustment rods allows for independent adjustment of the position of each coal-flow-diverting guide-vane flow control element relative to said plurality of outlet pipes to selectively vary the pulverized coal particle flow trajectories without causing a significant pressure drop or affecting primary air flow distribution inside said discharge turret, thereby selectively altering a mass flow rate of the pulverized coal flow into the corresponding outlet pipes.