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The flue gas heat loss will decrease as the flue gas flow diminishes. Increasing black liquor dry solids is especially helpful since the recovery boiler capacity is often limited by the flue gas flow. A modern recovery boiler consists of heat transfer surfaces made of steel tube; furnace-1, superheaters-2, boiler generating bank-3 and ...
Sections of a steam locomotive showing the many fire-tubes which carry the hot gases of the fire through the boiler to heat the water and so create steam. Boiler design is the process of designing boilers used for various purposes. The main function of a boiler is to heat water to generate steam.
Although generally a land-based boiler, the four-drum form was also used as a marine boiler, to power large ships. [4] The brick-built setting was replaced with a box-like steel housing, lined with firebrick. The water-tube diameter was reduced to between 2 and 2 + 1 ⁄ 2 inches (50.8 and 63.5 mm). To avoid problems with the water levels ...
A Velox boiler is a turbocharged, forced circulation, water-tube boiler which utilises an axial flow compressor and a gas turbine. Velox (Latin: "fast") boilers, also known as Velox steam generators, were developed in the early 1930s by the Brown Boveri Company (BBC) of Switzerland. [ 1 ]
A recuperator is a special purpose counter-flow energy recovery heat exchanger positioned within the supply and exhaust air streams of an air handling system, or in the exhaust gases of an industrial process, in order to recover the waste heat. Generally, they are used to extract heat from the exhaust and use it to preheat air entering the ...
[4] Where the boiler was arranged for composite firing, the central flue version was used with oil firing. Fired boilers sometimes included vertical water-tubes of more conventional form as well, to improve circulation. [1] There could even be cross-tubes, as for the common vertical cross-tube boiler. [3]
The Westinghouse Combustion Turbine Systems Division (CTSD), part of Westinghouse Electric Corporation's [1] Westinghouse Power Generation [2] group, was originally located, along with the Steam Turbine Division (STD), in a major industrial manufacturing complex, referred to as the South Philadelphia Works, in Lester, Pennsylvania near to the Philadelphia International Airport.
The now-asymmetric boiler could pass all of its exhaust gas through the superheated side as the single flow type. [10] The other bank remained in use for purely radiative heating, often with fewer rows of tubes. Alternatively the 'double flow' boiler retained full gas flow through both sides, although only one of these contained a superheater.