FIELD: power industry.
SUBSTANCE: system includes coal gas generator 2, high-temperature separator 3, heat exchanger 5, low-temperature separator 4 and heat recovery steam generator 6, which are connected in series. Coal gas generator 2 is equipped with primary air inlet 21 and at least one secondary air inlet 22 to supply high-temperature gasifying agent to gas generator 2. Gas generator 2 is also equipped with inlet 23 for circulating coal. Primary air inlet 21 and primary air inlet 22 are connected to heat exchanger 5. Inlet 23 for circulating coal is connected to high-temperature separator 3, low-temperature separator 4 and heat exchanger 5. System can include venturi scrubber 7 connected to HRSG 6, gas cleaning column 8 connected to venturi scrubber 7. At that, sedimentation tank 9 is arranged at the bottom of gas cleaning column 8, and slag removal device 11 is located at the bottom of sedimentation tank 9. Cooling tower 10 is arranged between cooling water inlet and cooling water outlet on gas cleaning column 8.
EFFECT: system has low coal consumption level, high calorific capacity, high efficiency and low cost.
15 cl, 2 dwg, 1 ex
