A method for emptying a furnace floor from smelt in a black liquor recovery boiler when the black liquor recovery boiler is being shut down. The emptying can be started while smelt is still flowing in smelt spouts. The floor is emptied by sucking smelt from the furnace with a smelt eductor. A device for removing smelt and wash water from a furnace of a black liquor recovery boiler by means of suction. Negative pressure is generated in the device by conducting pressurized gas into a suction pipe of an eductor so that preheated pressurized gas is discharged in the discharge direction of smelt and wash water.
The invention is related to a method for emptying a furnace floor from smelt in a black liquor recovery boiler when the black liquor recovery boiler is being shut down. The emptying can be started while smelt is still flowing in smelt spouts. The floor is emptied by sucking smelt from the furnace with a smelt eductor. The invention is also related to a device for removing smelt and wash water from a furnace of a black liquor recovery boiler by means of suction. Negative pressure is generated in the device by conducting pressurized gas into a suction pipe of an eductor so that preheated pressurized gas is discharged in the dis-charge direction of smelt and wash water.
F04F 5/24 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing liquids, e.g. containing solids, or liquids and elastic fluids
F04F 5/44 - Component parts, details, or accessories not provided for in, or of interest apart from, groups
F27D 3/14 - Charging or discharging liquid or molten material
3.
A METHOD AND DEVICE FOR EMPTYING THE FLOOR OF A BLACK LIQUOR RECOVERY BOILER
The invention is related to a method for emptying a furnace floor from smelt in a black liquor recovery boiler when the black liquor recovery boiler is being shut down. The emptying can be started while smelt is still flowing in smelt spouts. The floor is emptied by sucking smelt from the furnace with a smelt eductor. The invention is also related to a device for removing smelt and wash water from a furnace of a black liquor recovery boiler by means of suction. Negative pressure is generated in the device by conducting pressurized gas into a suction pipe of an eductor so that preheated pressurized gas is discharged in the discharge direction of smelt and wash water.
F04F 5/24 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing liquids, e.g. containing solids, or liquids and elastic fluids
F04F 5/44 - Component parts, details, or accessories not provided for in, or of interest apart from, groups
F27D 3/14 - Charging or discharging liquid or molten material
4.
Method and device for emptying the floor of a soda recovery boiler
The invention is related to a method for emptying a furnace floor in a soda recovery boiler when the soda recovery boiler is being shut down. The emptying may be started while smelt is still flowing in smelt spouts. The floor is emptied by sucking smelt from the furnace with a smelt eductor. The invention is also related to a device for removing smelt and wash water from a furnace of a soda recovery boiler by means of suction. Negative pressure is generated in the device by conducting pressurized gas into a suction pipe of the eductor so that the pressurized gas is discharged in the discharge direction of smelt and wash water.
F23G 7/04 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of specific waste or low grade fuels, e.g. chemicals of waste liquors, e.g. sulfite liquors
5.
A METHOD AND DEVICE FOR EMPTYING THE FLOOR OF A SODA RECOVERY BOILER
The invention is related to a method for emptying a furnace floor in a soda recovery boiler when the soda recovery boiler is being shut down. The emptying may be started while smelt is still flowing in smelt spouts. The floor is emptied by sucking smelt from the furnace with a smelt eductor. The invention is also related to a device for removing smelt and wash water from a furnace of a soda recovery boiler by means of suction. Negative pressure is generated in the device by conducting pressurized gas into a suction pipe of the eductor so that the pressurized gas is discharged in the discharge direction of smelt and wash water.
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