System for controlling coal flow in a coal pulverizer

A system for controlling one or more coal flow vanes in a coal pulverizer via an internal control system, the internal control system comprising:

• a cartridge assembly designed to operatively engage and/or be positioned in an upper portion of a coal pulverizer, the cartridge assembly comprising:
• at least two coal flow vanes;
• and
• at least one drive, or actuating, means per coal flow vane, wherein the at least one drive, or actuating, means is operatively coupled to a coal flow vane,
• wherein the location of the cartridge assembly is selected so that each of the at least two coal flow vanes can affect the output of pulverized coal in at least one outlet pipe of the coal pulverizer, and wherein the at least two coal flow vanes are positioned at equal intervals around an external surface of a coal inlet pipe of the coal pulverizer.

A method for controlling the output of coal in a plurality of coal outlet pipes in a coal pulverizer, the method comprising the steps of:

• modifying, or retrofitting, a portion of a coal pulverizer with a cartridge assembly designed to operatively engage and/or be positioned in an upper portion of a coal pulverizer, the cartridge assembly comprising:
• at least two coal flow vanes;
• and
• at least one drive, or actuating, means per coal flow vane, wherein the at least one drive, or actuating, means is operatively coupled to a coal flow vane;
• and
• controlling either independently, or in combination, the at least two coal flow vanes so as to modify, or control, the amount of coal exiting at least one coal outlet pipe in a coal pulverizer,
• wherein the location of the cartridge assembly is selected so that each of the at least two coal flow vanes can affect the output of pulverized coal in at least one outlet pipe of the coal pulverizer.