| 摘要 |
FIELD: heating.SUBSTANCE: invention refers to heat engineering and can be used for steam generation in different industries. A method of steam generation in a fire-tube boiler with through vertical tubes for solid hot heat carrier flows consists in the fact that hot bulk heat carrier in the form of a heated circulating flow is extracted from a heat source, for example from a furnace with a fluidised bulk material bed, and supplied through a distributor located above the boiler to extended inlets of through vertical tubes so that downward gravity flows that are in thermal contact with tube walls are formed. Gravity flows of solid heat carries provide high heat release coefficients from solid heat carriers to tube walls and high heat flows to boiler water. As a result of internal mixing of solid bulk heat carrier, the tubes constricting towards the outlet create uniform heat carrier temperature distribution throughout the tube cross section. Constricted tube outlets in the boiler lower part are connected to a solid heat carrier flow control of a damper type.EFFECT: invention will allow increasing heat release efficiency.3 cl, 1 dwg |
