Coal desulfurization in a rotary kiln combustor

Cobb, Jr

doi:10.2172/6986558

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Somewhat disappointing process performance was reported when the rotary kiln was fed with low-grade solid fuels,s ucha sa nthracite culm, andd ifficulties in relation to maintaining sustained combustion, even when large quantities of supplemental fuels were used. [11] Fluidized-bed technology can also be used to combust waste coal through mixing with VA M. During the combus-tion process in fluidized beds,s olid fuels are suspended by upward-blowing jets of air, resulting in the turbulent mixing of gas and solids.T he bubbling fluid provides amedium for high chemical reaction rates and rates of heat transfer. Them ixing action of the fluidizedb ed can facilitate flue gases coming into contact with sulfur-absorbing chemicals,s uch as limestone or dolomite,t hat have been added to the bed.…”

Section: Technology Options For Utilization and Mitigation Of Vammentioning

confidence: 99%

Development of Combustion Technology for Methane Emitted from Coal‐Mine Ventilation Air Systems

2017

View full text Add to dashboard Cite

Fugitive gas emissions from coal mining are widely known to be significant contributors to the emission of alkanes, mainly methane, to the environment. Utilization of coal‐mine ventilation air methane (VAM) is a crucial mission to minimize methane emission in the atmosphere. This paper reviews current technology for mitigation and utilization of methane emissions from coal mining. Challenges and opportunities for each technology are discussed together with their benefits/disadvantages. Catalytic combustion technology is recommended as the best option due to the low and variable concentration of methane in coal‐mine ventilation air, as well as its high volumetric flow. Herein, current developments in flameless combustion are discussed in detail with a few highlights on palladium‐based catalyst development. The remaining uncertainties and obstacles in the development of palladium‐based catalysts for VAM are also discussed. This paper highlights a few important practical aspects that necessitate further detailed investigation, such as catalyst deactivation phenomena, the stability of the catalyst under humid conditions, and the effect of coal dust on catalytic activity and stability. Notably, a pressure decrease, heat recovery/self‐sustaining, and long‐term deactivation are key for the successful development of VAM catalytic combustors.

show abstract

Section: Technology Options For Utilization and Mitigation Of Vammentioning

confidence: 99%

Development of Combustion Technology for Methane Emitted from Coal‐Mine Ventilation Air Systems

2017

View full text Add to dashboard Cite

show abstract

“…In early 1990's, the combustion performance of waste coal has been examined by Cobb [40]. The test results concluded that it was very difficult to carry out a sustain combustion process even a sufficient amount of supplementary fuel were used.…”

Section: Rotating Kilnmentioning

confidence: 99%

Untitled

2016

Adv. sci. technol. eng. syst. j.

View full text Add to dashboard Cite

show abstract

Coal desulfurization in a rotary kiln combustor

Cited by 2 publications

References 0 publications

Development of Combustion Technology for Methane Emitted from Coal‐Mine Ventilation Air Systems

Development of Combustion Technology for Methane Emitted from Coal‐Mine Ventilation Air Systems

Untitled

Contact Info

Product

Resources

About