FIELD: power industry.
SUBSTANCE: invention relates to power industry. Prepared brown coal is used as fuel according to the control method of the pulverised-coal boiler plant. In the boiler plant, exit gas removed from an exit gas duct is added to air from a primary air fan for preparation of mixed gas with oxygen concentration of less than 12% in volumetric ratio; with that, mixed gas is separately supplied to a conveying gas duct that passes through a gas heater and a bypass duct for conveying gas, which bypasses the gas heater, and after that, mixed gas is supplied to the mill.
EFFECT: invention allows safe use of prepared low-grade coal as fuel and requires inconsiderable modification of the existing pulverised-coal boiler plants.
4 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF FLARING OF LOW-GRADE COALS IN BOILER INSTALLATIONS | 2017 |
|
RU2658450C1 |
| HYBRID SYSTEM OF BURNING COAL AND COAL DUST IN FLUIDIZED- BED | 0 |
|
SU1732821A3 |
| COAL DRESSING AND COMBUSTION WASTE PROCESSING COMPLEX | 2012 |
|
RU2545575C2 |
| SWIRLING-TYPE LOW-TEMPERATURE FURNACE | 1997 |
|
RU2132016C1 |
| DEVICE FOR FIRING PULVERIZED FUEL | 1993 |
|
RU2047048C1 |
| PLANT FOR COAL GASIFICATION | 2009 |
|
RU2466178C2 |
| BOILER UNIT | 1994 |
|
RU2096687C1 |
| COMBINATION STEAM-GAS POWER PLANT AND METHOD OF ITS OPERATION | 1998 |
|
RU2124134C1 |
| VORTEX KINDLING PULVERIZED COAL BURNER | 2018 |
|
RU2683052C1 |
| PLASMA-COAL LIGHTING-UP METHOD OF PULVERISED-COAL FIRED BOILER | 2009 |
|
RU2399842C1 |
