Waste fuel combustion system
This patent describes a furnace for burning waste fuel. It comprises: first wall defining a first elongated cylinder having an inlet end, an outlet end spaced from the inlet end, an axis extending between the inlet end and outlet end, and a substantially uniform outer diameter, and the cylinder defining therein a combustion chamber, a second wall defining a second cylinder surrounding the first cylinder and spaced from the first cylinder, the first and second cylinders defining therebetween an air passage communicable with the outlet end of the first cylinder, the air passage including a first portion having a relatively uniform cross-sectional area in a plane extending generally perpendicular to the axis and including a second portion located between the first portion and the outlet end, the air passage being adapted for conducting a secondary flow of gases form the inlet end to the outlet end, and means for accelerating the flow of gases through the air passage as the flow approaches the outlet end of the air passage, the means for accelerating the flow of combustion gases including means for decreasing the cross-sectional area of the second portion of the air passage in a plane generally perpendicular to the axis and adjacent the outlet end of the first cylinder.
- Assignee:
- NOV; EDB-93-040165; NOV-93-005121
- Patent Number(s):
- US 5158025; A
- Application Number:
- PPN: US 7-683868
- OSTI ID:
- 7029431
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020800 -- Petroleum-- Waste Management
09 BIOMASS FUELS
090900 -- Biomass Fuels-- Processing-- (1990-)
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
BOILERS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION CHAMBERS
DESIGN
FURNACES
INDUSTRIAL WASTES
MANAGEMENT
MATERIALS RECOVERY
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
PROCESSING
REFUSE-FUELED BOILERS
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE OILS
WASTE PROCESSING
WASTES