The Hartford Loop on Steam Boilers Definition, function

The Hartford Loop: this article gives a defnition of the Hartford Loop used on steam heating systems, explains why the Hartford Loop is necessary to protect against steam boiler damage, and gives a bit of the history of the development of the Hartford loop. We include sketches and photographs of the Hartford Loop piping arrangement on steam boilers and list inspection & defect points of interest.

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Coal-Fired Power Station - an overview | ScienceDirect Topics

May 04, 2011 · Y. Yan, in Advanced Power Plant Materials, Design and Technology, 2010 10.1 Introduction. Coal-fired power stations are burning an increasingly varied range of fuels and fuel blends, including sub-bituminous and lower volatile coals and biomass of varying composition and combustion properties, under tight economic and environmental constraints. Since existing coal-fired plants are

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Air preheater - Wikipedia

Types. There are two types of air preheaters for use in steam generators in thermal power stations: One is a tubular type built into the boiler flue gas ducting, and the other is a regenerative air preheater. These may be arranged so the gas flows horizontally or vertically across the axis of rotation.

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Hurst Boiler | Boiler Models| Plan Views | Spec Sheets

Two pass boiler design eliminates refractory baffles between flue gas passes. Minimum maintenance with rugged construction for extra-long life. Efficiencies allow for burning number 5 and number 6 oil with complete combustion with low heat release.

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Superheaters - an overview | ScienceDirect Topics

The temperature is gradually reduced from the outlet of the furnace to the tail of the boiler, while the volume of gas is reduced with no air leakage. In order to improve the convective transfer in the convective passes, the superheater and the reheater are placed close to the economizer in the flue gas path of relatively low temperatures.

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Utility systems - processdesign

Feb 22, 2016 · Heating values for solids and liquids are usually on a per-mass basis, and gases on a per-volume basis. A specified amount of heating cannot be met with the amount of fuel calculated using only the HHV. There will be heat losses, the flue gas temperature will be greater than 60 ⁰F, and water in the flue gas will typically be vapor. (Seider 608)

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Design Guidelines for an Optimum Scrubber System

Typical power plant flue gas volumes range from 3000 to 4000 acfm/MW depending on coal composition, boiler heat rate, gas temperature, and amount of excess air. Because of economies of scale, the utility industry has tended toward larger and larger power stations implying that scrubber systems must be capable of handling volumes of gas as large

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(PDF) Steam Boiler - ResearchGate

A steam boiler is a closed vessel, generally made of steel, in which water is heated by some source of heat produced by combustion of fuel and ultimately to generate steam.

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Flue-gas desulfurization - Wikipedia

For a typical coal-fired power station, flue-gas desulfurization (FGD) may remove 90 percent or more of the SO 2 in the flue gases. History. Methods of removing sulfur dioxide from boiler and furnace exhaust gases have been studied for over 150 years. Early ideas for flue gas desulfurization were established in England around 1850.

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Steam locomotive - Wikipedia

How a steam locomotive works, in 100 words ; Coal or oil is directed into the firebox (item 27 in the large diagram below), where it burns at high temperature. The firebox is surrounded by water in the boiler, and many tubes (28) extend from the firebox's front along the boiler barrel (29). Very hot gases travel through these tubes and up the smokestack/chimney (33).

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