Description
Realization:
steel structure / technology: 2010 - 2012
cladding: 2011 - 2012
Place: ČEZ, a.s., Ledvice Power Plant, Bílina, Czech Republic
Description:
Description:
Steel structure, technology and cladding of buildings of desulphurization system in Ledvice Power Plant.
Purpose of desulphurization technology is ensuring of final flue gas cleaning, which will be produced by the new built-up boiler unit 660 MWe. Is used „wet limestone method" (washing of raw flue gas through the limestone suspension in absorption system), which has the highest operating efficiency. As a secondary product of this technology arises the energo-gypsum, which is further used in various branches of building industries.
Buildings and technological parts:
Limestone unloading and storage:
- Steel structure of building (dimensions: l=60,0m x w=27,0m x h=18,0m)
- Technology
- Rubber-lining of hoppers + limestone vibration feeders (10ks)
- Belt conveyors (175m) and bucket elevators (1ks x 25m)
- Dedusting technology
Limestone grinding and milling:
- Steel structure of building (dimensions: l=7,0m x w=21,5m x h=31,0m / l=25,0m x w=21,5m x h=12,0m)
- Technology
- Limestone crushers (2pcs)
- Bucket elevators (2pcs x 37m)
- Limestone day silos 1,2 (diameter:7m/height:17m/plate thickness: 8,0mm) + filtration equipment
- Weight conveyors (2pcs x 5m)
- Wet ball mills 1,2 (2 x 40tun)
- Circulation tanks (2pcs) incl. agitators and pumps
- Limestone hydrocyclones (2pcs)
- Limestone slurry pumps (2pcs)
Limestone slurry tanks 1,2:
- Welded steel structure of tanks / cylindrical structure with flat roof
(diameter:8,5m/height:15,3m/plate thickness: from 8,0 up to 6,0mm)
- Servis technology platforms
- Technology
- Limestone slurry agitators (2pcs)
FGD Pump house:
- Steel structure of building (dimensions: l=40,0m x w=14,0m x h=13,5m)
- Stair tower and absorber elevator (dimensions: l=10,0m x w=3,0m x h=41,0m)
- Pipe bridge (total lenght: 34m)
- Technology
- Recirculation pumps (5pcs)
- Oxidation air compressors (2pcs)
- Process pumps (7pcs)
- Drain pit pumps and agitators (3pcs)
- Raw flue gas cooling technology
Raw flue gas duct:
- Supporting steel structure incl. servis platforms
- Welded steel structure of the duct
(section:11x11m/lenght:70m/plate thickness: 8,0mm)
- Steel structure for flue gas cooler (dimensions: l=4,0m x w=21,0m x h=55,0m)
- Technology
- Emergency cooling system (material: Alloy 31)
- Flue gas cooler boundles
- Secondary heat exchanger (location: machinery hall)
- Compensators (2pcs)
Absorber:
- Welded steel structure of the absorber / cylindrical structure with flat roof
diameter: 21m, from +/-0,0 up to 10,5m
conus: from +10,5m up to 14,0m, change of diameter from 21m to 17m
diameter: 17m, from 14,0m up to +50,0m
height: 50m
plate thickness: from 18,0 up to 10,0mm
- Absorber INLET/welded structure (material: Alloy 59)
- Absorber OUTLET/welded structure
- Supporting beams of inner equipment
- Servis technology round platforms
- Technology
- INLET flushing system (material: Alloy 59)
- Spray banks (5 levels)
- Mist eliminator (1 úroveň)
- Agitators (5pcs)
Clean gas duct:
- Supporting steel structure incl. stair tower and servis platforms of the duct (dimensions: l=6,0m x w=13,0 x h=52,0m)
Drainage tank (emergency slurry tank):
- Welded steel structure of the tank / cylindrical structure with flat roof
(diameter:16m/height:27m/plate thickness: from 20,0 up to 8,0mm)
- Servis technology platforms
- Technology
- Agitators (4pcs)
Gypsum dewatering and gypsum buffer storage:
- Steel structure of building (dimensions: l=15,0m x w=21,5m x h=25,0m)
- Technology
- Centrifuges (5pcs)
- Gypsum hydrocyclone (1pcs)
- Waste water hydrocyclone (1pcs)
- Gypsum belt conveyors (2pcs x 20m)
- Gypsum bucket elevator (1pcs x 15m)
- Screw conveyor (1pcs)
- Process pumps and drain pit agitator (13pcs)
- Agitators (4pcs)
Gypsum pipe conveyor:
- Supports of pipe conveyor + tension tower (7 supports in total, heights of supports from 7m up to 18m)
- Steel structure of pipe conveyor (total lenght: 220m)
Gypsum storage and loading:
- Steel structure of storage building (dimensions: l=53,0m x w=25,0m x h=23,0m)
- Steel structure of loading building (dimensions: l=45,0m x w=6,0m x h=13,5m)
- Technology
- Belt conveyors (160m)
- Reclaimer scraper (1pcs)
- Telescopic loading devices (2pcs)
Cladding of buildings:
Limestone unloading and storage:
dimensions: l=60,0m x w=27,0m x h=18,0m
Limestone grinding and milling:
dimensions: l=7,0m x w=21,5m x h=31,0m / l=25,0m x w=21,5m x h=12,0m
FGD Pump house:
dimensions: l=40,0m x w=14,0m x h=13,5m
- Stair tower and absorber elevator
dimensions: l=10,0m x w=3,0m x h=41,0m
Gypsum dewatering and gypsum buffer storage:
dimensions: l=15,0m x w=21,5m x h=25,0m
Gypsum storage and loading:
- Cladding of storage building
dimensions: l=53,0m x w=25,0m x h=23,0m
- Cladding of loading building
dimensions: l=45,0m x w=6,0m x h=13,5m
Design and worpcshop drawings of steel structure and cladding. Production and erection of steel structure / installation of technology. Production and installation of cladding.
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