Investigation on Coal Slagging Characteristics and Combustion Behaviour in Furnace

Sophia, Nor Jauhara; Hasini, Hasril

doi:10.1051/matecconf/201710905003

Cited by 7 publications

(8 citation statements)

References 8 publications

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“…Low fusibility could increase slagging potential [13]. SRF also has low SiO2 and high CaO content, which can cause slagging and fouling [13][14][15]. In addition, it was also found that the chlorine content in SRF was very high at 5442 ppm.…”

Section: Characteristic Of Fuelsmentioning

confidence: 99%

“…Low AFT could decrease fusibility. Low fusibility could increase slagging potential [13]. SRF also has low SiO2 and high CaO content, which can cause slagging and fouling [13][14][15].…”

Section: Characteristic Of Fuelsmentioning

confidence: 99%

“…This is influenced by the blending composition of the biomass in the coal, which causes an increase in alkali content (K and Na) which can lead to ash deposits on the heating metal surface [18]. High alkali content also can reduce AFT value and increase the potential for slagging [13], but this condition can still be removed by using a shoot blower in the CFPP. In addition, the Fuel E and Fuel F probes have eroded areas.…”

Section: Influence To Slagging and Fouling Tendencymentioning

confidence: 99%

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Influence of Coal-Solid Recovered Fuel Blended on Slagging, Fouling and Corrosion During Co-Firing in A Drop Tube Furnace

Adi¹,

Prismantoko²,

Karuana³

et al. 2022

Preprint

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The problem of urban waste is one of the most complicated problems in Indonesia's big cities. Utilizing municipal waste into co-firing fuel is one way to reduce waste that accumulates and reduce global emissions. Before being used, the urban waste needs to be tested for characteristics to determine its content or its combustion characteristics. This study uses Indonesian low-rank and medium-rank coal and Solid Recovered Fuel (SRF) biomass. This observation aims to decide the effect of coal-SRF blended on slagging and fouling in cofiring using a drop tube furnace (DTF). The results obtained are SRF blending up to 15% there is no slag attached. There is slight slag attached at the blending ratio of 20% and 25%, and there is a corroded part of the plate. It can happen because SRF has a high chlorine content. Overall, it shows that co-firing coal with SRF up to 25% is still safe on slagging and fouling.

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Section: Characteristic Of Fuelsmentioning

confidence: 99%

“…Low AFT could decrease fusibility. Low fusibility could increase slagging potential [13]. SRF also has low SiO2 and high CaO content, which can cause slagging and fouling [13][14][15].…”

Section: Characteristic Of Fuelsmentioning

confidence: 99%

Section: Influence To Slagging and Fouling Tendencymentioning

confidence: 99%

See 1 more Smart Citation

Influence of Coal-Solid Recovered Fuel Blended on Slagging, Fouling and Corrosion During Co-Firing in A Drop Tube Furnace

Adi¹,

Prismantoko²,

Karuana³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…(Source: Frandsen, 1997) Each coal type was then tested to identify the respective characteristic using the ultimate analysis and approximate analysis method. The respective coal was then further analyzed to quantify its calorific value, carbon, hydrogen, nitrogen, oxygen, ash content inside the coal [5,19]. The Hard Grove Index (HGI) for each specific coal was subsequently tested to determine the coal hardness before firing at the plant [4].…”

Section: Figure 3 Schematic Diagram Process For Thermal Coal Fired Power Plantmentioning

confidence: 99%

A Study on Bituminous Coal Base Acid Ratio to the Slagging Factor at Large Scale Boiler

Samsudin¹,

Aziz²,

Hairuddin³

et al. 2021

IJHT

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Different types of coal have different characteristics and performances. In thermal coal plant, deposition of coal ash inside the furnace causes slag formation inside the boiler rear path and consequently reduces the heat transfer process and boiler efficiency. Besides, accumulation of ash on the boiler tube surfaces form layers of slags and blocks the flue gas flow out of the boiler. Therefore, the purpose of this study is to investigate the relationship between sub-bituminous coal base acid ratio towards the heat transfer process inside large-scale boilers. The base acid ratio for sub-bituminous coal is measured before firing inside large-scale boiler of studied the thermal plant which has a generation capacity of 700 MW. This study found correlation between high furnace rear path temperature (FRPT) that is observed to be above 800℃, with the build up of ash accumulation inside the boiler, for the studied coal. Thus, a high base acid ratio causes the accumulation of coal ash, thus reducing the heat transfer process which results in high FRPT of the boiler. Therefore, it proves that a base acid ratio is an indicator for coal performance during firing inside the boiler.

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“…Hal tersebut konsisten pada delapan sampel batu bara subbituminous yang tergolong LRC. [5] [6] [7] Babcock & Wilcox (selanjutnya disingkat B&W) sebagai perusahaan manufaktur boiler yang berasal dari negara USA telah mengembangkan beberapa slagging indice untuk berbagai aspek pada desain boiler. Slagging indice akan menentukan kriteria desain furnace dan area radiasi lainnya.…”

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Perbandingan Data Hasil Metode B&W dan GWC untuk Klasifikasi Slagging Abu Batu Bara LRC

Muchsin¹

2021

kilat

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Slagging classification is generally listed in coal COA in coal trading transactions using one of the methods of determining slagging classification so that coal is ensured boiler friendly (low/medium classification). The paper aims to prove the tendency of two methods of determining slagging classification (B&W and GWC) on the results of certain classifications in LRC coal. The research method uses a quantitative method by collecting LRC coal COA data on a coal-fired steam power plant for a year of coal receipt (81 lots) issued by a laboratory that has been accredited by KAN (National Accreditation Committee). According to the method of GWC, ashes of entire lots are classified as LRC ash. While the method of B&W, there are 62 lots of ash classified as lignitic ash and 19 lots of ash classified as bituminous ash. This research has shown that the GWC method shows 79 lots of ash (97.53%) has low and medium classification and 2 lots of ash (2.47%) have a high classification; the method from B&W shows 19 lots of ash (23.46%) has a low classification and 62 lots of ash (76.54%) has a severe classification.

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Investigation on Coal Slagging Characteristics and Combustion Behaviour in Furnace

Cited by 7 publications

References 8 publications

Influence of Coal-Solid Recovered Fuel Blended on Slagging, Fouling and Corrosion During Co-Firing in A Drop Tube Furnace

Influence of Coal-Solid Recovered Fuel Blended on Slagging, Fouling and Corrosion During Co-Firing in A Drop Tube Furnace

A Study on Bituminous Coal Base Acid Ratio to the Slagging Factor at Large Scale Boiler

Perbandingan Data Hasil Metode B&W dan GWC untuk Klasifikasi Slagging Abu Batu Bara LRC

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