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AssigneeEntreprise Generale de Chauffage Industriel Pillard
InventorsRoland Guiot, Luigi Russo, Jean-Claude Gauthier, Jean-Claude Pillard
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In a method of supplying air to a pulverized solid fuel burner passing through the burner cowl of a furnace, the fuel is dried and then conveyed by means of a given large quantity of hot air, which may or may not be depleted in oxygen in a separator in which the fuel is extracted from it. The fuel is then conveyed to the burner by means of a first portion only of the air from which the fuel has been removed. This conveyor air portion is used as primary combustion-supporting air for burning the fuel in the burner, into which the first portion of air, mixed with the fuel it conveys, is fed via an annular duct. The other portion of the hot air purified in the separator is used at least as additional primary combustion-supporting and flame adjustment air and is fed into the burner peripherally and centrally relative to the first portion of air charged with fuel.
A method of supplying air to a pulverized solid fuel burner passing through a burner cowl of a furnace, in which method pulverized solid fuel is dried and then conveyed by means of a given large quantity of hot air in a separator in which said fuel is extracted from said hot air, which fuel is then conveyed to said burner by means of a first portion of the air from which the fuel has been removed, said first air portion being used as primary combustion-supporting air for burning said fuel in said burner, into which said first portion of air mixed with said fuel is fed via a first annular duct, a second portion of said hot air purified in said separator being used at least as additional primary combustion-supporting and flame adjustment air and being fed into said burner peripherally and centrally relative to the first portion of air charged with fuel.
An installation for supplying air to a pulverized solid fuel burner passing through a burner cowl of a furnace, said installation including at least one separator in which pulverized solid fuel is extracted from hot air that has been used to dry and to convey said fuel thereto, at least one circuit for supplying primary air in which the pulverized solid fuel is conveyed from said at least one separator and which consists of a first portion of the air purified in said at least one separator, said at least one supply circuit introducing and circulating said primary air in said installation and discharging into said burner via an annular duct, means associated with said at least one supply circuit for creating a flow of said first portion of said primary air and said pulverized solid fuel in said at least one supply circuit, and at least one second circuit for supplying additional primary air to said installation consisting of a second portion of the purified air and fed into said burner via at least two ducts disposed peripherally and centrally relative to said axial annular duct.
Dependencies are inferred from the claim text.