POSSIBILITIES FOR UTILIZATION OF BLOWDOWN WASTE ENERGY IN INDUSTRIAL STEAM BOILERS


IX Regionalna konferencija Industrijska energetika i zaštita životne sredine u zemljama Jugoistočne Evrope  (str. 97-105)

АУТОР(И) / AUTHOR(S): Nikola D. Tanasić, Miloš M. Ivošević, Mirjana S. Stamenić

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DOI: 10.46793/IEEP24.097T

САЖЕТАК / ABSTRACT:

Steam boiler blowdown is a necessary process undertaken in steam boilers to control the level of total dissolved solids (TDS) within the boiler. The number of times a boiler is blown down depends mainly on the quality of boiler feed water. The hot water is usually discharged into a flash or expansion vessel which reduces the pressure of the liquid, and results in flash steam and boiler blowdown water. Heat recovery then may take place, both on the flash steam and boiler blowdown water, by means of heat exchangers. The paper presents the possibilities for reducing heat losses caused by desalination and blowdown of industrial steam boilers. Techniques for reducing the amount of hot water discharged for the purpose of desalination and blowdown, as well as the possibility of waste energy recovery, were considered. The paper also presents a methodology for determining the flow rate of hot water from boiler desalination and blowdown where it is not possible to measure the flow rate directly, which can be useful when conducting short energy audits. In the paper feasibility of the application of heat recovery systems is presented, based on the results of analysis that was carried out for an industrial scale system in operation.

КЉУЧНЕ РЕЧИ / KEYWORDS:

industrial steam boilers, desalination and blowdown, reduction of heat losses

ЛИТЕРАТУРА / REFERENCES:

[1] Chantasiriwan, S., The recovery of blowdown heat using steam dryer in biomass power plant, Energy, 283 (2023), 129002

[2] ***,www.spiraxsarco.com/learn-about-steam/the-boiler-house/bottom-blowdown