Combustible particluate fuel heater

Patent · Tue Jan 21 04:00:00 EST 1986

OSTI ID:6032875

Collins, B H; Jurgens, H J.W.

This patent describes a combustible particulate fired heater. It consists of: a combustion chamber defined by upright side walls extending between open top and bottom ends; an enclosure surrounding the combustion chamber; a retort within the combustion chamber adjacent the bottom end and having a lower particulate receiving end and an upper open end; feed conveyor means leading through the enclosure to the retort for delivering metered quantities of combustible particulates to the lower particulate receiving end of the retort; primary combustion air supply means having a primary combustion air supply manifold extending at least partially about the upper open end of the retort; primary air control means on the primary air supply means for selectively allowing entry of combustion air from outside the enclosure in to the retort; secondary combustion air supply means including a secondary air supply manifold within the combustion chamber above the primary combustion air supply manifold; secondary air control means independent of the primary air control means for selectively allowing entry of secondary air from outside the enclosure to an area within the combustion chamber above the retort; an exhaust duct opening into the enclosure; and vacuum means connected to the exhaust duct for producing a pressure differential between the area confined by the enclosure and the ambient atmosphere such that ambient air is drawn through at least one of the combustion air supply means to induce a high level of gasification and to support combustion at the retort and for drawing combustion exhaust gases out through the exhaust duct.

• Assignee: NOV; EDB-86-089010
• Patent Number(s): US 4565184
• OSTI ID: 6032875
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR FLOW
CHEMICAL REACTIONS
CHEMICAL REACTORS
COMBUSTION
COMBUSTION CHAMBERS
COMBUSTION CONTROL
CONTROL
DESIGN
DISTILLATION EQUIPMENT
EQUIPMENT
EXHAUST GASES
EXHAUST SYSTEMS
FLUID FLOW
FLUIDS
FUEL FEEDING SYSTEMS
FUEL SYSTEMS
GAS FLOW
GASEOUS WASTES
GASES
GASIFICATION
HEATERS
OXIDATION
PARTICLES
PARTICULATES
PRESSURE CONTROL
RETORTS
THERMOCHEMICAL PROCESSES
WASTES