Modeling the Process of Hazardous Emissions Formation in the Exhaust Gases Of
            Ship's Steam Boilers

Mikhailenko, V.S.; Shcherbinin, V.A.; Leshchenko, Violetta V.; Kharchenk, R.Yu.; Lozhechnikova, Nadezhda V.

doi:10.15276/imms.v10.no3-4.154

Cited by 4 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Modern trends in the use of fuelconsuming thermal power plants for various purposes are largely related to the requirements for improving their environmental and eco nomic performance [1,2]. The main directions of meeting these requirements in the design and operation of municipal heat and power facilities are the reduction of toxic substances in the environment with gas emissions from boiler plants [3,4] and fuel savings in them through the use of efficient waste heat recovery technologies [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…In most situations of implementation of this method, exhaust gases are taken for mixing into the blown air before the air heat er of such a thermal power plant. The temperature of the se lected gases is usually 300-400 °С [4]. The use of the consid ered method of ecologization for heating boiler installations of small heating capacity, which are usually not equipped with air heaters, is associated with certain problems.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Problems of operating heating boilers of increased environmental efficiency

Fialko,

Navrodska,

Shevchuk

et al. 2023

Nauk. visn. nat. hirn. univ.

View full text Add to dashboard Cite

Purpose. Ensuring reliable operation of heating heat-generating devices with recirculation and exhaust gas heat recovery. Methodology. The normative methods of thermal calculation for surface heat exchange devices and the software according to the requirements of regulatory methods for this type of equipment for processing the results of our own experimental studies on heat exchange during deep cooling of combustion products of gas-consuming boilers were used. Findings. Calculation studies on the thermal operation modes during the heating period under the conditions of recirculation and heat recovery of flue gases of gas-fired water-heating boiler plants not equipped with air heaters were carried out. The main characteristics were determined of the thermal and humidity operation state for the air-supply ducts of these installations under the conditions of recirculation of flue gases’ part into the blown air. Regularities of temperature and dew point changes in the mixture of admixed gases and air under the conditions of using traditional heat recovery technologies and without them in different boiler modes and with different parts of recirculated gases were established. Problems of ensuring the operability and reliability of such boiler plants are highlighted. It is shown that these problems are related to condensate formation on the internal surfaces of air ducts and their freezing in some operating modes during in the cold period of the heating season. It is also shown that an effective solution to existing problems can be the use of air heaters in heat recovery systems to preheat the blown air before its mixing with recirculation gases. Originality. For the first time, the thermal and humidity operation modes of the air-supply ducts of heating boiler plants with increased environmental efficiency, which is ensured by boiler exhaust gases recirculation into the blown air, have been investigated. Practical value. The obtained research results will be used in the design of systems of recirculation and heat recovery of heat-generating devices’ exhaust gases to improve their environmental and thermal efficiency.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Problems of operating heating boilers of increased environmental efficiency

Fialko,

Navrodska,

Shevchuk

et al. 2023

Nauk. visn. nat. hirn. univ.

View full text Add to dashboard Cite

show abstract

Development of a Neuro-Fuzzy Intelligent Network for Monitoring and Control of Microclimate Systems

Kharchenko

Mykhailenko

Kochetkov

2023

Aut. Control Comp. Sci.

View full text Add to dashboard Cite

Thermal Aspects of Heating Boiler Plants Operation With Heat-Recovery and Exhaust Gas Recirculation

Fialko¹,

Navrodska²,

Shevchuk³

et al. 2023

Energy and automation

View full text Add to dashboard Cite

The feature analysis of application for heating boiler plants of relatively small heating capacity, which are not equipped with air heaters, of the method of reducing the emission of nitrogen oxides due to decrease the temperature in the boiler furnace by recirculating exhaust gases into the blown air are presented. At the same time, heating gas-consuming boiler plants with traditional heat recovery systems of exhaust gases and implementation of this method with the selection of recycled gases after the boiler and heat-recovery exchanger are considered. The study results for a water-heating boiler with a heating capacity of 2 MW of the change regularities of the combustion temperature in the boiler furnace, the its exhaust gases temperature and water heated in the boiler as well as the boiler efficiency, depending on its relative heat load changed (from 30 to 100%) and with different parts of recirculated gases (from 10 to 20%) in the mixture with the blown air are presented. The studies were performed with and without them recirculation and heat recovery of flue gases. The research results show that the use of waste gas recirculation causes a noticeable decrease (by 150 – 250°C) in the combustion adiabatic temperature and a slight (by 0.5 – 4.7°C) decrease in the boiler waste gases temperature. Recirculation also leads to a decrease in boiler efficiency by 1.3 – 3.1% during the heating period, and the use of the considered heat recovery system of boiler waste gases with heating of return heat-network water by cooling them provides an increase in boiler efficiency by 2.5 – 8.1%. The resulting increase in boiler efficiency with a heat recovery and recirculation system is 0.1–4.8%.

show abstract

Modeling the Process of Hazardous Emissions Formation in the Exhaust Gases Of Ship's Steam Boilers

Cited by 4 publications

References 0 publications

Problems of operating heating boilers of increased environmental efficiency

Problems of operating heating boilers of increased environmental efficiency

Development of a Neuro-Fuzzy Intelligent Network for Monitoring and Control of Microclimate Systems

Thermal Aspects of Heating Boiler Plants Operation With Heat-Recovery and Exhaust Gas Recirculation

Contact Info

Product

Resources

About