COMBUSTION APPARATUS WITH INDIRECT FIRING SYSTEM

摘要

The invention relates to a combustion apparatus, in particular to a burner for the combustion of carbonaceous fuel. The combustion apparatus comprises a burner having a burner inlet for receiving a supply of combustible pulverous fuel and a supply of comburant gas and a burner outlet in the vicinity of which combustion of the fuel is supported during use; at least a primary conduit defining a flow channel for conveying a mixture of fuel and comburant gas from the burner inlet to the burner outlet; a fuel feed line defining a flow channel which conveys a pulverous combustible fuel in a dense phase; and a supply conduit fluidly connecting a comburant gas supply to the primary conduit and defining with the primary conduit a primary flow stream; wherein the fuel feed line is provided with a fuel feed outlet into the supply conduit upstream of the burner inlet to supply pulverous combustible fuel in a dense phase; and wherein the primary flow stream is provided with a mixing device downstream of the fluid supply outlet. A method for combusting pulverous combustible fuel in a burner embodying such principles is also described.