Energy saving in boiler thermal power plants and systems of heat supply

Kudinov, Anatoliy; Ziganshina, S. K.

doi:10.12737/11565

Cited by 3 publications

(3 citation statements)

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“…The use of heat-recovery technologies without protection systems for gas exhaust-ducts leads to corrosion destruction of the exhaust-ducts and chimneys [8][9][10]. This is due to the deep cooling of exhaust-gases in heat-recovery systems.…”

Section: Resultsmentioning

confidence: 99%

Environmental aspects of heat recovery systems of boiler plants

et al. 2019

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The results of studies on improving the environmental characteristics of boiler plants of municipal heat-power engineering in the application of technologies for the deep recovery of heat from exhaust-gases of gas-fired boilers are presented. The data on the reduction of environment by reducing the amount and temperature of harmful emissions resulting from fuel combustion are given. The data are given for boiler plants equipped with complex heat-recovery systems characterized by cooling the exhaust-gases below the dew point of the water vapor contained in them. It is shown that the decrease in emissions is due to a decrease in fuel consumption in boilers due to the beneficial use of the heat of exhaust-gases in these systems and the dissolution of nitrogen and carbon oxides in the condensate, formed in the heat-recovery equipments. The analysis of improving the environmental safety of boiler plants when used in heat-recovery technologies of corrosion protection systems for chimneys has been performed. Anticorrosion protection is provided by preventing condensate formation in the exhaust-gas ducts of boiler plants when using technologies for the deep recovery of exhaust-gas heat. To prevent condensate formation, the method of pre-drying cooled exhaust-gases in a heat exchanger-preheater installed after heat-recovery equipment is used. It is also shown that the use of complex heat-recovery systems provides in the boiler plant additional water in the form of condensate formed during condensation of moisture from exhaust-gases. Receipt of this condensate is another ecological effect of heat-recovery, which allows reducing the consumption of natural water resources for supply municipal heat networks.

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Section: Resultsmentioning

confidence: 99%

Environmental aspects of heat recovery systems of boiler plants

et al. 2019

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“…here G G -flue gas flow rate, kg/s; G С -their heat capacity, J / kg 0 C. The formula for lowering the temperature of combustion products when they move in the gas duct [6] dQout = π Kl (tGtamb ) dy (3) here Kl is the coefficient of heat transfer from flue gases through the cylindrical wall of the chimney to the external environment, which has a linear character W/(m  K); tG is the temperature of the exhaust flue gases, in the section dy, 0 C; tamb air temperature outside, 0 С.…”

Section: Methodsmentioning

confidence: 99%

“…The condition for the long-term operation of external gas ducts and chimneys is to ensure a thermal regime in the cold season without the appearance of condensation on the internal surfaces of the gas ducts. To do this, it is necessary to ensure that the surface temperature of the external gas duct and chimney tcm rises above the dew point td [3][4][5][6]. First of all, at the head of the chimney, that is t h.ch.…”

Section: Introductionmentioning

confidence: 99%

Studying on thermal processes during the motion of combustion products in the gas chimneys of the heat power plant

Anarbaev

Kodirov²,

Khushiev³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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This article discusses the new in Uzbekistan heat recovery technology is leaving the flue gas from boilers. This is achieved by condensation of water vapor therein. An analysis of the advantages and disadvantages of contact heat recovery and surface types. The analysis of the heat transfer coefficients in the condensing heat exchanger surface. The temperature regimes which provide point of the flue gas dew point. The limited stresses in the chimney of the boiler unit are calculated using condensing heat utilizers of the exhaust gas for stations of Uzbekistan.

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Analysis of the Efficiency of Using the Heat of Natural Gas Combustion Products to Preheat Forced Air Supplied to the Boiler

Ziganshina

Kudinov

2018

Power Technol Eng

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Energy saving in boiler thermal power plants and systems of heat supply

Cited by 3 publications

References 0 publications

Environmental aspects of heat recovery systems of boiler plants

Environmental aspects of heat recovery systems of boiler plants

Studying on thermal processes during the motion of combustion products in the gas chimneys of the heat power plant

Analysis of the Efficiency of Using the Heat of Natural Gas Combustion Products to Preheat Forced Air Supplied to the Boiler

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