METHOD AND SYSTEM FOR SUPPLYING AND FIRING PULVERISED FUEL IN GLASS MELTING FURNACE AND BURNER TO BE USED IN SYSTEM Russian patent published in 2009 - IPC F23D1/00 

FIELD: heating systems.

SUBSTANCE: invention refers to power engineering. Pulverised fuel firing burner is designed for being used in glass melting furnace and includes the main housing containing external tube, intermediate tube and internal tube. At that, tubes are located concentrically relative to each other; at that, external tube and intermediate tube comprise the first chamber. External tube includes inlet connection pipe and outlet connection pipe for introducing and circulating the cooling fluid medium inside the first chamber in order to cool burner; at that, intermediate tube includes air inlet tube (282) for introducing the first air or gas flow to the second chamber (284), at that, the second chamber is formed between internal tube and intermediate tube; internal tube includes upper end (285) for introducing flow of pulverised fuel mixed with air to internal tube; flow distributing device (286) is connected below lower end of the main housing; at that, flow distributing device has curvature for gradual change of trajectory direction of flow of pulverised fuel mixed with air and air or gas flow, at that, flow distributing device includes external cylindrical housing (266), intermediate cylindrical housing (268) and internal cylindrical housing (270), external cylindrical housing (266) and intermediate cylindrical housing (268) determine limits of first chamber (294) for circulation of cooling fluid medium from the main housing in order to cool the flow distributing device. At that, internal cylindrical housing and intermediate cylindrical housing determine limits of second chamber (284) designed for receiving and changing trajectory direction of flow of the first air or gas flow from second chamber (284) of the main housing, and the main chamber for fluid medium, which is designed for receiving and transmitting pulverised fuel mixed with air to the outside at least to one outlet end of flow distributing device to be mixed with the first air or gas flow in combustion zone of glass melting furnace. At that, the main housing includes cone part which is uniformly reduced from the first part to the second part in the burner body; at that, the second part is connected to flow distributing device in order to increase velocity of the first air or gas flow and pulverised fuel mixed with air, and outlet nozzle connected to each outlet end; at that, outlet nozzle includes a tip, cylindrical element fixed in rear part of the tip; at that, cylindrical element includes central hole, at least one set of holes, which is formed at the periphery of cylindrical element; at that, holes are formed transversely in the periphery of cylindrical element in order to provide interconnection between the second chamber and central hole of the above nozzle.

EFFECT: invention allows decreasing the amount of hazardous emissions to atmosphere.

5 cl, 21 dwg