Detrimental effects of low-rank coal utilization to the operational condition of large capacity updraft moving-bed gasifier

Phiciato, Phiciato; Huda, Miftahul

doi:10.1080/19392699.2019.1642200

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…A high equivalence ratio can increase the chance of localised hotspots. To distribute the heat accumulated in the bed, the grate is moved faster leading to decreased distance between the grate and the combustion zone which can cause grate failure as discussed by Phiciato et al [100]. Additional operational issues like the melting of the cone, blocking of air exit ports, localised pressure drop, and aggravated bed channelling have been observed by the author.…”

Section: Operational Effectsmentioning

confidence: 97%

A Review of Factors Affecting Gasifier Performance

Pathak,

Dhaigude,

Sahu

et al. 2023

ChemBioEng Reviews

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The Physico‐chemical characteristics are inherent properties of fuel and their behaviour changes in different gasification conditions. The critical properties of the coal impede the gasifier's performance, and hence, a proper study is needed to develop and further enhance the gasification systems. A proper assessment of factors influencing gasifier performance and their optimization enables to select, alter, and adjust the conditions. The present paper reviews the effect of important coal properties and gasifier operating conditions on gasification performance parameters. Further, the suitability of gasifiers (moving bed, fluidized bed, and entrained flow) according to the physico‐chemical properties of fuel along with proper operating parameters has also been studied.

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Section: Operational Effectsmentioning

confidence: 97%

A Review of Factors Affecting Gasifier Performance

Pathak,

Dhaigude,

Sahu

et al. 2023

ChemBioEng Reviews

View full text Add to dashboard Cite

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Effect of Low-Rank and High-Rank Coal Blend Characteristics on the Gasification Performance in Fixed Bed Reactor

Sharma,

Anand,

Gautam

et al. 2024

ACS Omega

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Coal gasification is the most demanding technology, increasing day by day for synthesis gas and chemical production in a clean environment. Coal is a primary source of energy or fuel. India has a high preservation of high-ash coal. Employment of this coal for gasification is tough due to its abrasive nature. Coal blending is an effective way to utilize such coal and to control the gasification performance. The present study focuses on using high-ash, low-rank Indian coal with high-rank imported coal in a suitable blend. The blending effect on raw gas yield (kg/kg of coal) and heating value (kcal/Nm 3 ) was studied for coal blends� CH1 (20:80), CH2 (30:70), CH3 (40:60), CH4 (50:50), and CH5 (60:40) of RC (raw Indian coal) with RH (raw high-rank imported coal). Also, the gasification characteristics of the WC (washed Indian coal) were studied similarly. It may be seen that the raw gas yield with blends of raw coal and the rank of imported coal is 1.11 to 1.46 (ton/ton of coal), whereas in washed Indian coal, it is 0.95 (ton/ton of coal). A slight change was observed in the heating value of raw gas, and its average value in the blended CH1 to CH5 coal is 2860 kcal/Nm 3 , whereas in WC, it is 2956 kcal/Nm 3 . The maximum utilization of raw coal in the blend for gasification can be 60%, which is economical and 0.55 times more effective than WC gasification.

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