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US 6,253,714 B1Granted
Steam generator
AssigneeBBP Energy GmbH
InventorManfred Klein
Life of this patent
Estimating the term…
Abstract
A steam generator with a stack of coal-dust burners (4), each of which accommodates a removable oil lance, and with one or more flues (3) that communicate with a combustion-air heater (6). The heater rests on a scaffolding (12) and has flue gas flowing through it, its flue-as outlet (9) communicating by way of a distriutor (20) with an electric filter (16). The filter is provided with a housing (17) and with one or more intake hoods (18). The distributor is upright and below the heater's flue-gas outlet and the heater is above where the lances can be removed from the burners.
Claims5
A steam generator comprising:
- a combustion chamber demarcated by walls and having at least one flue;
- a combustion-air heater communicating with said at least one flue and having flue gas flowing therethrough;
- scaffolding supporting said combustion-air heater;
- said combustion-air heater having a flue gas outlet;
- an electric filter communicating with said flue gas outlet through a vertical distributor line;
- said electric filter having a housing and at least one intake hood;
- coal-dust burners on said walls demarcating said combustion chamber and having each an axis;
- an oil injection lance removably mounted along the axis of each coal-dust burner;
- said distributor line being located vertically upright inside said scaffolding and below said flue-gas outlet;
- said filter intake hoods extending into said scaffolding,
- said oil injection lance being removable from said coal-dust burner at a location,
- said combustion air heater being positioned above said location where said oil injection lance is removable from said coal-dust burner for forming said oil injection lance from said coal-dust burner,
- said vertical distributor line entering said intake hood vertically, said intake hood extending into said scaffolding.
10 more elements
A steam generator comprising:
- a combustion chamber demarcated by walls and having at least one flue;
- a combustion-air heater communicating with said at least one flue and having flue gas flowing therethrough;
- scaffolding supporting said combustion-air heater;
- said combustion-air heater having a flue gas outlet;
- an electric filter communicating with said flue gas outlet through a vertical distributor line;
- said electric filter having a housing and at least one intake hood;
- coal-dust burners on said walls demarcating said combustion chamber and having each an axis;
- an oil injection lance removably mounted along the axis of each coal-dust burner;
- said distributor line being located vertically upright inside said scaffolding and below said flue gas outlet;
- said filter intake hoods extending into said scaffolding,
- said oil injection lance being removable from said coal-dust burner at a location said combustion air heater being positioned above said location where said oil injection lance is removable from said coal-dust burner for forming said oil injection lance from said coal-dust burner,
- said vertical distributor line entering said intake hood vertically,
- said intake hood extending into said scaffolding;
- a single support for said scaffolding at a location facing said electric filter, said electric filter having a longitudinal axis with a geometrical projection of the longitudinal axis, said single supporting being arranged in said geometrical projection of the longitudinal axis half-way between the filter-intake hoods, said housing communicating upstream with a rear wall of said combustion-air heater.
11 more elements
A steam generator comprising:
- a combustion chamber demarcated by walls and having at least one flue;
- a combustion-air heater communicating with said at least one flue and having flue gas flowing therethrough;
- scaffolding supporting said combustion-air heater;
- said combustion-air heater having a flue gas outlet;
- an electric filter communicating with said flue gas outlet through a vertical distributor line;
- said electric filter having a housing and at least one intake hood;
- coal-dust burners on said walls demarcating said combustion chamber and having each an axis;
- an oil injection lance removably mounted along the axis of each coal-dust burner;
- said distributor line being located vertically upright inside said scaffolding and below said flue gas outlet;
- said filter intake hoods extending into said scaffolding,
- said oil injection lance being removable from said coal-dust burner at a location said combustion air heater being positioned above said location where said oil injection lance is removable from said coal-dust burner for forming said oil injection lance from said coal-dust burner,
- said vertical distributor line entering said intake hood vertically,
- said intake hood extending into said scaffolding;
- a single support for said scaffolding at a location facing said electric filter, said electric filter having a longitudinal axis with a geometrical projection of the longitudinal axis,
- said single supporting being arranged in said geometrical projection of the longitudinal axis half-way between the filter-intake hoods,
- said housing communicating upstream with a rear wall of said combustion-air heater;
- said steam generator being a columnar boiler;
- said coal-dust burners being stacked between opposing walls of said combustion chamber;
- said housing having a cylindrical shape with a rotor having inertial masses;
- said scaffolding being attached to another scaffolding supporting the steam generator;
- said combustion air heater being located above an uppermost coal-dust burner and above said lances so that said lances are removable for maintenance;
- said combustion air heater being located next to one of said walls,
- said scaffolding being as tall as a distance between a rear wall of combustion air heater and an axis of a support supporting said other scaffolding;
- said housing communicating upstream closely with said rear wall of said combustion air heater,
- said vertically upright distributor reducing friction and energy of gas flow from the steam generator.
22 more elements
Dependencies are inferred from the claim text.