Fouling of the flue gas cooler in a large-scale coal-fired power plant

Retracted: Techno-economic analysis of a novel hot-air recirculation process for exhaust heat recovery from a 600-MW hard coal-fired boiler

“…Especially when the flue gas is cooled to a temperature below its water dew point, the tubular heat exchanger for heat recovery must be made of expensive stainless steel, 11 which makes the benefit from the recovery project very little. As a countermeasure to acid corrosion, the fluorine plastic heat exchanger, 12 ceramic membrane condenser, [13][14][15] and open LiBr solution absorption system 16 were advanced for trial in laboratory or pilot scale. However, these technologies still need to be further developed before being applied in a large-scale thermal power plant.…”

Thermal Energy Processes in Direct Steam Generation Solar Systems: Boiling, Condensation and Energy Storage – A Review

“…Another approach is to conduct research on actual systems and apparatus, to thoroughly understand the phenomena related with real operating conditions and scales. To do so, some researchers performed experiments on industrial scales Chen et al, 2017a). Mazed et al (2018) performed an experimental study on condensation of steam inside a pressure vessel prototyped from a real thermonuclear reactor.…”

Process Failure Detection via Recurrence Quantification Analysis in a Slot-Rectangular Spouted Bed

“…The combustion of these fossil fuels (typically coal) tend to generate not only fly ash and corrosive gasses in the exhaust stream but can also experience particle agglomeration depending upon the fuel properties, moisture content, and operating conditions within the fluidized bed boiler [2][3][4][5]. The fly ash and corrosive sulphur gases can cause problems via fouling and corrosive failure of the heat transfer tubes of the plant economizers and air preheaters, as well as electrostatic precipitators [1,[6][7][8][9]. Within the CFB boiler itself, the thermal cycling and corrosive slag depositions on the refractory walls can lead to refractory failures and spalling, which can result in sections of the refractory detaching from the wall and falling into the boiler, mixing in with the bed material and potentially affecting the bed dynamics [1,10,11].…”