Combustor with multistage internal vortices

Patent · Tue Sep 19 04:00:00 EDT 1989

OSTI ID:5296196

Shang, J Y; Harrington, R E

This patent describes a combustor. It comprises a vertically oriented housing having walls defining lower and upper regions, a combustion zone in the lower region of the housing, means for introducing particulate fuel into the combustion zone, means for introducing a primary stream of gaseous combustion-supporting medium into the combustion zone for reacting with the fuel and thereby providing a stream of ascending gaseous combustion products containing entrained solid particulate material, exhaust passageway means extending through the housing at a central location vertically separated from the combustion zone by the upper region for receiving and discharging from the housing gaseous combustion products ascending through the upper region, vortex-generating means comprising a plurality of elongated nozzle means projecting into the upper region of the housing with each of the plurality of nozzle means extending away from the walls of the housing and into the upper region along a plane perpendicular to the walls of the housing and at an angle tangent to the vertical center of the housing, at least two of the plurality of nozzle means being disposed at spaced apart locations in a common cross-sectional plane in the upper region, and means for conveying a secondary stream of combustion-supporting medium through an open end of each of the plurality of nozzle means into the upper region only at a location inwardly spaced from the walls for forming a vortex of the combustion-supporting medium and the gaseous products of combustion.

• Assignee: NOV; EDB-90-010313; NOV-89-086057
• Patent Number(s): US 4867079
• Application Number: PPN: US 7044697A
• OSTI ID: 5296196
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
COMBUSTION PRODUCTS
COMBUSTION WAVES
COMBUSTORS
DESIGN
MASS TRANSFER
NOZZLES