Site Erected Steam Generators – SD Type
Steam capacity range from 120 to 455 tons/h
The SD pre-engineered steam generators has proven itself over the years, reliably meeting the rigorous demands of industrial steam porcedures. The most common users of this equipment are utilities and petroleum, chemical, paper and metal industries. Numerous applications have been made for power generation in a wide range of sizes with capacitoes up to and in excess of 65 MW.
STF Standard Design Field Erected Boilers present a constant cross of the furnace and boiler bank, whilst setting of the boiler width defines the boiler production in accordance to the design output required by the Client. The boiler can be also optimized by pre-engineered design flexibilities and allowance for granting special modifications to standard models. Standard for the selection SD Standard Design Filed Erected Boiler capable to suit the Client requirements, are based on the boiler performance program, the maximum heat volumetric liberation rate allowed, furnace width, maximum flue gas flow, maximum flue gas temperature at the boiler outlet.
Nine Series of Boiler Models define Nine Sizes Classes:
SD-31, SD-32, SD-33, SD-34, SD-35, SD-36, 3D1, 3D2, 3D3.
SD-31, SD-32, SD-33 inorporate 4 (four) burners;
Series SD-34, SD-35, SD-36 incorporate 6 (six) burners;
Series 3D1, 3D2, 3D3 incorporate 8 (eight) burners.
Burners are fuel flexible, being capable of burning the majority of Gaseous and Liquid Fuels, either natural or by-products of refinery process.
Gaseous Fuels include Natural Gas, Refinery Process Gases (high hydrogen, tail gas, refinery fuel gas), Landfill Gas, CO & Blast Furnace Gas, Coke Gas, Waste Gases.
Liquid Fuels include Oils (normal fuel oil, light fuel oil, diesel), Waste Liquids.
Firing systems are designed and engineered to achieve for all fuels the required combustion parameters with safety, ease of control, reliability, granting that the emissions are within the required limits, with a minimum of maintenance. Circulation in this type of boilers is provided by the difference in specific gravity of the fluid in the heated circuits (water-steam mixture) and in the downcomer tubes (water only).
Boiler furnances are generously sized to ensure a complete combustion.
The width of STF Standard Design Field Erected Boilers can span from 5 meters to 12 meters and as a consequence the Furnace Volume can range from 268 m3 to 690 m3.
Remaining boiler dimensions are kept almost fixed, to an overall height of about 15 meters.
Steam production can vary from 120 tons/hour to 455 tons/hour with superheated steam temperature up to 540 °C at the operating pressure of 110 barg, granting the best available technology for the emission using a wide variety of gaseous and liquid fuels.