Particulate Distributor for Coal Supply Conduit

A particulate distributor for pulverized coal flowing to a combustion chamber, the particulate distributor comprising:

• an inner cylinder;
• an outer cylinder concentric with the inner cylinder;
• an intermediate cylinder concentric with the inner cylinder;
• a first flow channel defined between the inner cylinder and the intermediate cylinder, the first flow channel having first vanes each extending between and attached to the inner cylinder and the intermediate cylinder to divide the first flow channel into first flow subdivisions;
• a second flow channel defined between the intermediate cylinder and the outer cylinder, the second flow channel having second vanes each extending between and attached to the outer cylinder and the intermediate cylinder to divide the second flow channel into second flow subdivisions;
• and
• an outlet diffuser attached to an outlet side of the particulate distributor, the outlet diffuser configured to reduce a cross-sectional area of each of the first flow subdivisions and the second flow subdivisions at the outlet side.

A particulate distributor for pulverized coal flowing to a combustion chamber, the particulate distributor comprising:

• an inner cylinder;
• an outer cylinder concentric with the inner cylinder;
• an intermediate cylinder concentric with the inner cylinder;
• a first flow channel defined between the inner cylinder and the intermediate cylinder, the first flow channel having first vanes each extending between and attached to the inner cylinder and the intermediate cylinder;
• a second flow channel defined between the intermediate cylinder and the outer cylinder, the second flow channel having second vanes each extending between and attached to the outer cylinder and the intermediate cylinder;
• and
• an outlet diffuser attached at an outlet side of the particulate distributor, comprising:
• a number of members, each member aligned with an outlet edge of a respective first vane or a respective second vane and comprising:
• opposed longitudinal edges having teeth formed in therein, the teeth extending into one of the first flow channel or the second flow channel and forming an impingement surface configured to reduce a cross-sectional area of each of the first flow channel and the second flow channel.