The ability to conduct a comparative analysis of technical and commercial proposals for the supply of boiler equipment from different manufacturers is not only a professional duty of a specialist, but also a necessary pre-requisite for making a right decision which would allow you to gain a maximum profit from the project under otherwise equal conditions. Each supplier has its own understanding of the "turnkey" equipment completeness, which is diametrically opposed to the understanding of this term by a customer. The exemplary analysis of the scope of equipment delivery shows that ADDITIONAL HIDDEN COSTS for the customer may be worth up to $5,000,000, and very often the customer learns of this amount after the conclusion of the contract, during the project implementation.
In accordance with its "key solution" concept, WELLONS.RU procures all basic and auxiliary equipment necessary for the operation of the entire boiler house facility, including buildings and structures, and makes sure that no "surprises" will appear in the later stages of the project.
DELIVERY PACKAGE COMPARISON: WELLONS EQUIPMENT VS. FLUIDIZED BED BOILER
EQUIPMENT CONFIGURATION: | WELLONS | FLUIDIZED BED |
| BOILER | ||
| Pressure vessels | + | + |
| Furnaces | + | + |
| Furnace refractory lining | + | + |
| Boiler shell and heat insulation | + | -- |
| Superheater | + | + |
| Desuperheater | + | + |
| Economizer | + | + |
| MAIN STEAM | ||
| Steam pipe to MSIV | + | + |
| BOILER AUXILIARY DEVICES | ||
| Safety valves | + | + |
| Noise damper | + | -- |
| Continuous blowdown tank | + | -- |
| Continuous blowdown heat exchanger | + | -- |
| Continuous blowdown pipes | + | -- |
| Blowdown tank | + | -- |
| Drainage pipes | + | -- |
| FEEDWATER | ||
| Feedwater storage tank: | + | -- |
| Deaerator | + | -- |
| Feedwater pumps | + | -- |
| Condensate pumps | + | -- |
| Feedwater piping (all) | + | -- |
| Air/water valves | + | + |
| Feedwater control system | + | + |
| FUEL SUPPLY | ||
| Fuel supply to feed hopper | -- | -- |
| Feed hopper | + | -- |
| Equipment for fuel supply from feed hopper to furnace (feeders, conveyor, level indicators, etc.) | + | + |
| Makeup sand feed system | n/a | + |
| Startup oil burners | n/a | + |
| Auxiliary fuel piping | n/a | -- |
| Atomizing steam/air piping | n/a | -- |
| Load oil burners (2х20 MW) | n/a or optional | + |
| Oil fuel piping | n/a | -- |
| Atomizing steam/air piping | n/a | -- |
| COMBUSTION AIR | ||
| Forced draft fan | + | + |
| Air pre-heater | + | + |
| Air ducting | + | -- |
| Air ducting insulation | + | -- |
| Combustion air control system | + | + |
| FLUE GASES | ||
| Induced draft fan | + | + |
| Gas ductwork | + | -- |
| Exhaust ducting insulation | + | -- |
| Multiple cone collector | + | -- |
| Electrostatic precipitator | option | + |
| Flue stack* | incl. electrostatic precipitator | -- |
| Flue gas control system | + | + |
| SOOT BLOWER | ||
| Sootblowers | + | + |
| Sootblower supports | + | + |
| Steam, air and condensate piping | + | -- |
| Essential valves, actuators, etc. | + | + |
| ASH HANDLING SYSTEM | ||
| Ash removal system (hoppers, augers, scrapper conveyors) | + | + |
| Ash receiving bin | + | -- |
| AUXILIARY SYSTEMS | ||
| Sample station with coolers | + | + |
| Chemical dosing system (pumps, tanks, piping, etc.) | + | -- |
| Condensate pumps | + | -- |
| Instrument and combustion air compressors | + | -- |
| Compressed instrument and combustion air piping | + | -- |
| Tank, gas duct and piping insulation and lining | + | -- |
| ELECTRIC EQUIPMENT | ||
| Electric motors | + | + |
| Variable speed controllers | + | + |
| Control cabinets | + | + |
| Junction boxes | + | + |
| Instruments | ||
| Control valves, flow sensors, control room equipment, flue gas analyzers, local instrumentation, instrumentation, etc.) | + | + |
| Switchgear | + | -- |
| ACS | + | + |
| UPS | + | + |
| METAL STRUCTURES | ||
| Boiler support beams | + | + |
| Boiler support posts | + | + |
| Boiler platforms and ladders | + | + |
| Boiler house pillars | + | + |
| Platforms and ladders for other equipment | + | -- |
| Interfloor stairs and walkways | + | -- |
| Boiler house railing | + | -- |
| Boiler house roof | + | -- |
| Building siding | + | -- |
| Roof and wall insulation | + | -- |
| Window and door openings | + | -- |
| Indoor air duct steel supports | + | -- |
| Steel supports of gas ductwork from boiler to chimney | + | -- |
| Indoor pipe hangers | + | -- |
| OTHER | ||
| Painting | + | + |
| Installation drawings | + | + |
| Installation supervision | + | + |
| Training and operation manuals | + | + |
| Commissioning | + | + |
| Operation tests | + | -- |
| Freight | DDP | DAP |
| ADDITIONAL COST OF LACKING EQUIPMENT / WELLONS OPTIONS = | $ 5 000 000 | |
€ 4 545 455 | ||