Analysis of MSW Combustion Temperature in a Hot Water Boiler with the Low-Capacity

Kornilova, N V; Trubaev, P A

doi:10.1088/1742-6596/1066/1/012003

Cited by 9 publications

(1 citation statement)

References 1 publication

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“…The total number of hot-water and heating domestic solid fuel boilers operating in the territory of Kazakhstan is tens of thousands (Fuel and energy…, 2018). Such sources of harmful emissions must have more stringent requirements for the content of harmful substances released into the atmosphere (Zhang et al, 2017;Liu et al, 2017b;Kornilova and Trubaev, 2018). However, coal prismatic and cylindrical coal-fired boilers with heat pipes widespread in Kazakhstan have an efficiency of not higher than 55-65%.…”

Section: Problem Statementmentioning

confidence: 99%

Research of Combustion Modes During Layer-Burning of Shubarkul Coal on the Fire Grate With the Hand Furnace of the KSVR-0.43 Hot Water Boiler

Orumbayev¹,

Kibarin²,

Bakhtiyar³

et al. 2020

PTQ

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Experience shows that the trend towards using solid fuels in the energy sector of Kazakhstan will be implemented for a rather long time. At the same time, the global trend is currently tightening environmental requirements. They set the task to continue improving coal combustion efficiency and minimize emissions of harmful substances and greenhouse gases into the atmosphere. This article aims to conduct complex thermal engineering tests of the KCVr-0.43 hot water boiler. For this, the following measurement and control tools were used: the standard boiler room secondary devices, an industrial gas analyzer Testo-350, a control (reading) module Testo-454 with temperature probes and a Pitot tube, a soot number meter Testo-308, a temperature meter 2TPM1, a portable liquid flow meter Vzlet-PRC and a stopwatch. All they had valid verification and calibration certificates. An analysis of the gas composition and technical parameters of the KCVr-0.43 hot water boiler in the investigated operation mode with Shubarkul coal during a long-term test showed that it seems possible to operate boilers of this series under low load conditions without boosting air and fuel. They can reduce emissions of toxic NOx and greenhouse gases CO2 into the atmosphere. In this case, burning Shubarkul coal without forcing through the air is characterized by significant carbon monoxide CO emissions. The formed nitrogen oxides NOx decompose in reactions with CO with the formation of molecular nitrogen and oxygen. Burning, coke residue in the layer, coal-burning stages, emissions of harmful substances.

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Section: Problem Statementmentioning

confidence: 99%

Research of Combustion Modes During Layer-Burning of Shubarkul Coal on the Fire Grate With the Hand Furnace of the KSVR-0.43 Hot Water Boiler

Orumbayev¹,

Kibarin²,

Bakhtiyar³

et al. 2020

PTQ

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Method development for the thermotechnical calculations utilizing reduced characteristics of the RDF fuels

Kornilova

Trubaev

2019

IOP Conf. Ser.: Mater. Sci. Eng.

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The paper presents method of calculation of the heat leakage and efficiency by using method of indirect heat balance, utilizing data from gas analysis, which can be employed for operational evaluation plant operation during burning of different types of waste materials. Taking into account that practically only oxygen and carbon dioxide is being measured in the exhaust gases, calculation method for heat leakage with exhaust gases, using measurements of only this component, without utilizing carbon dioxide content in combustion products, was developed. Carbon dioxide and oxygen calculated percentage content in dry complete combustion products in actual air consumption was measured with consideration of incomplete combustion. Heat leakage for low power boilers and furnaces was analyzed, heat leakage calculation method for this kind of plants was introduced. Using design factors analysis of the solid fuel boilers for burning low-calorie fuel and wood waste, was developed dependence of the outside walls specific area of the boiler on the boiler’s efficiency. Based on the developed method for seven types of the RDF fuels, tabular and graphic dependences for reduced factors, characterizing heat leakage to the atmosphere and incomplete combustion, were introduced. Suggested method was tested for calculating losses in solid fuel water heating boiler with grate stoker and designed output power of 200 kW during burning of the briquetted waste materials.

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Thermotechnical tests of the low power solid fuel heating boilers while incinerating briquetted RDF

Kornilova

Trubaev

2019

IOP Conf. Ser.: Mater. Sci. Eng.

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Objective of this paper is an analysis of briquetted waste combustion in the low power boilers. Research was conducted for the 100 kW pyrolysis heating boiler and 200 kW heating boiler with grate stoker. Briquettes were made by compacting milled and crushed materials into cylinders 50 mm in diameter, with a length of 100-200 mm, density of 800 kg/M3. It was established that process of combustion in low power boilers has low thermal efficiency, value of which fluctuated within 60…74% for wood combustion and 50…70% for RDF briquettes combustion. Burning process was stable and characteristics of the RDF combustion were similar to the wood combustion. Incineration of the fuel briquettes had better effectiveness than burning of solid wood. During RDF briquettes combustion high CO content (up to 0,2% or 2000 ppm) in flue gas was observed, which is an indication of insufficient burning time. It may be concluded that waste incineration in low-duty plants is viable, but to secure complete combustion and desired temperatures process of combustion and heat extraction should be separate in terms of design.

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Analysis of MSW Combustion Temperature in a Hot Water Boiler with the Low-Capacity

Cited by 9 publications

References 1 publication

Research of Combustion Modes During Layer-Burning of Shubarkul Coal on the Fire Grate With the Hand Furnace of the KSVR-0.43 Hot Water Boiler

Research of Combustion Modes During Layer-Burning of Shubarkul Coal on the Fire Grate With the Hand Furnace of the KSVR-0.43 Hot Water Boiler

Method development for the thermotechnical calculations utilizing reduced characteristics of the RDF fuels

Thermotechnical tests of the low power solid fuel heating boilers while incinerating briquetted RDF

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