COAL FLOW SPLITTERS AND DISTRIBUTOR DEVICES

• US 20120237304A1
• Filed: 03/16/2011
• Published: 09/20/2012
• Est. Priority Date: 03/16/2011
• Status: Active Grant

• Current Assignee: Babcock Power Services Inc. (Babcock Power Incorporated)
• Original Assignee: Babcock Power Services Inc. (Babcock Power Incorporated)
• Inventors: Zarnescu, Vlad
• Granted Patent: US 8,403,602 B2
• Time in Patent Office: Days
• US Class Current: 406/181
• CPC Class Codes: F23K 2203/105 Flow splitting devices to feed a plurality of burners
• CPC Class Codes: F23K 3/00 Feeding or distributing of lump or pulverulent fuel to combustion apparatus
• CPC Class Codes: F23K 3/02 Pneumatic feeding arrangements, i.e. by air blast

Abstract

A flow splitter for distributing solid particles flowing in a fluid through a piping system includes a divider housing. The divider housing has an inlet configured to connect to an upstream pipe and has a plurality of outlets, each outlet being configured to connect to a respective downstream pipe. A divider body is mounted within the divider housing. A plurality of divider vanes are included, each extending from the divider body to the divider housing. The divider housing, divider body, and divider vanes are configured and adapted to reduce non-uniformity in particle concentration from the inlet and to supply a substantially equal particle flow to each outlet.

Claims

1. A flow splitter for distributing solid particles flowing in a fluid through a piping system, the flow splitter comprising:

a) a divider housing having an inlet configured to connect to an upstream pipe and having a plurality of outlets, each outlet being configured to connect to a respective downstream pipe;

b) a divider body mounted within the divider housing; and

c) a plurality of divider vanes, each extending from the divider body to the divider housing, wherein the divider housing, divider body, and divider vanes are configured and adapted to reduce non-uniformity in particle concentration from the inlet and to supply a substantially equal particle flow to each outlet.

2. A flow splitter as recited in claim 1, wherein the divider body is conical and is mounted concentric within the divider housing.

3. A flow splitter as recited in claim 2, wherein the divider body diverges in a direction from the inlet of the divider housing to the outlets thereof.

4. A flow splitter as recited in claim 3, wherein the divider body extends substantially from the inlet of the divider housing to the outlets thereof.

5. A flow splitter as recited in claim 1, wherein the inlet is castellated with peripherally spaced teeth that extend inward.

6. A flow splitter as recited in claim 1, wherein the inlet and outlets are each circular.

7. A flow splitter as recited in claim 1, wherein the plurality of divider vanes includes four divider vanes spaced apart circumferentially around a longitudinal axis of the divider body at 90°

intervals.

8. A flow splitter as recited in claim 1, wherein the divider vanes extend substantially from the inlet to the outlets.

9. A flow splitter as recited in claim 1, wherein the divider vanes are each aligned parallel to a longitudinal axis running from the inlet to the outlets.

10. A flow splitter as recited in claim 1, wherein the divider housing includes an outlet plate opposed to the inlet of the divider housing and substantially perpendicular to a longitudinal axis running from the inlet to the outlets of the divider body, wherein the outlets of the divider head are four circular outlets defined through the outlet plate, wherein the plurality of divider vanes includes four divider vanes spaced apart circumferentially around the longitudinal axis with each divider vane evenly spaced between a respective pair of the four circular outlets.

11. A flow splitter as recited in claim 10, wherein the outlet plate has a rectangular periphery, with one of the divider vanes mounted at a mid-point of each side thereof.

12. A flow splitter as recited in claim 11, wherein each corner joining respective sides of the rectangular periphery of the outlet plate is rounded.

13. A flow splitter as recited in claim 12, wherein each rounded corner of the outlet plate is substantially concentric with a respective one of the outlets.

14. A flow splitter as recited in claim 1, wherein the inlet defines an inlet area, the outlets define an outlet area, and wherein the ratio of the inlet area to the outlet area is about 1.0.

15. A flow splitter as recited in claim 1, wherein the divider housing, divider body, and divider vanes are configured and adapted to have a pressure drop that is less than about 3.2 in H₂O from the inlet to the outlets.

16. A coal flow splitter for distributing coal fines flowing in an air flow through a coal piping system, the coal flow splitter comprising:

a) a divider housing having a circular inlet configured to connect to an upstream coal pipe and having an outlet plate opposite the inlet with four circular outlets defined therethrough, each outlet being configured to connect to a respective downstream coal pipe;

b) a divider body mounted within the divider housing; and

c) a plurality of divider vanes, each extending from the divider body to the divider housing, wherein the divider housing, divider body, and divider vanes are configured and adapted to reduce non-uniformity in coal particle concentration from the inlet and to supply a substantially equal coal particle flow to each outlet.

17. A coal flow splitter as recited in claim 16, wherein the divider body is conical and is mounted concentric within the divider housing, wherein the divider body extends substantially from the inlet of the divider housing to the outlet plate, and wherein the divider body diverges in a direction from the inlet of the divider housing to the outlets thereof.

18. A coal flow splitter as recited in claim 16, wherein the inlet is castellated with peripherally spaced teeth that extend inward.

19. A coal flow splitter as recited in claim 16, wherein the plurality of divider vanes includes four divider vanes spaced apart circumferentially around a longitudinal axis running from the inlet to the outlets with each divider vane evenly spaced between a respective pair of the four outlets, wherein the divider vanes extend substantially from the inlet to the outlets, wherein the divider vanes are each aligned parallel to the longitudinal axis, wherein the outlet plate has a rectangular periphery, with one of the divider vanes mounted at a mid-point of each side thereof, and wherein each corner joining respective sides of the rectangular periphery of the outlet plate is rounded and is substantially concentric with a respective one of the outlets.

20. A coal flow splitter as recited in claim 16, wherein the inlet defines an inlet area, the outlets define an outlet area, wherein the ratio of the inlet area to the outlet area is about 1.0, and wherein the divider vanes are configured and adapted to have a pressure drop that is less than about 3.2 in H₂O from the inlet to the outlets.