Alkali influences on sulfur capture for North Dakota lignite combustion

Zygarlicke, Christopher J.; Stomberg, Andrea L.; Folkedahl, Bruce C.; Strege, Joshua R.

doi:10.1016/j.fuproc.2006.03.002

Cited by 20 publications

(17 citation statements)

References 4 publications

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“…Most organic and pyritic sulfur in coal is converted to SO 2 during combustion and only a small fraction of the sulfur is retained in the ash . For example, studies for North Dakota coals showed 83 to 93% sulfur conversion to SO 2 , depending on sulfur content and forms of sulfur in coal . Similarly, 91% of sulfur conversion for a US eastern bituminous coal was observed by Croiset and Thambimuthu .…”

Section: Introductionmentioning

confidence: 91%

“…During combustion, part of the sulfur is retained in the fly ash by reacting with alkali and alkaline earth metal compounds such as calcium carbonates, and sodium chloride . Sulfur retention by the alkali compounds is typically roughly 10–15% . It has been reported that the sulfur retention in PC boilers and fluidized beds are different, mainly due to different combustion temperatures .…”

Section: Introductionmentioning

confidence: 99%

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Sulfur trioxide formation/emissions in coal‐fired air‐ and oxy‐fuel combustion processes: a review

et al. 2018

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In oxy‐fuel combustion, fuel is burned using oxygen together with recycled flue gas, which is needed to control the combustion temperature. This leads to higher concentrations of sulfur dioxide and sulfur trioxide in the recycled gas, which can result in the formation of sulfuric acid and enhanced corrosion. Current experimental data on SO3 formation, reaction mechanisms, and mathematical modelling have indicated significant differences in SO3 formation between air‐ and oxy‐fuel combustion for both the wet and dry flue gas recycle options. This paper provides an extensive review of sulfur trioxide formation in air‐ and oxy‐fuel combustion environments, with an emphasis on coal‐fired systems. The first part summarizes recent findings on oxy‐fuel combustion experiments, as they affect sulfur trioxide formation. In the second part, the review focuses on sulfur trioxide formation mechanisms, and the influence of catalysis on sulfur trioxide formation. Finally, the current methods for measuring sulfur trioxide concentration are also reviewed along with the major difficulties associated with those measurements using data available from both bench‐ and pilot‐scale units. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Sulfur trioxide formation/emissions in coal‐fired air‐ and oxy‐fuel combustion processes: a review

et al. 2018

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“…The emission/formation of PM 10 is thus governed by two key aspects: coal mineral properties and local combustion conditions experienced by coal/char particles [3,13], both being often related to coal rank. For example, our review of some published papers [11,[14][15][16][17][18][19][20][21][22][23][24] shows that the kaolinite content in coal broadly correlates with coal rank (see Fig. S1 of the Supplementary Material).…”

Section: Introductionmentioning

confidence: 99%

Emission of inorganic PM10 from included mineral matter during the combustion of pulverized coals of various ranks

Wen

Gao

et al. 2015

Fuel

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“…The products of reaction have lowered melting points; hence their formation may favor enhanced deposit formation [17]. However, large grains of calcite could dilute deposit strength [18].…”

Section: Effect On Foulingmentioning

confidence: 99%

Overview of Solid Fuels Combustion Technologies

Vamvuka

2010

Handbook of Combustion

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Energy drives human life and is crucial for continued human development. It is the convertible currency of technology. Without energy the whole fabric of society would crumble. Global demand for energy is rapidly increasing with increasing human population, urbanization, and modernization. This growth is projected to rise sharply over the coming years in developing countries. The world heavily relies on fossil fuels to meet its energy requirements -oil, gas, and coal are providing almost 80% of the global energy demands. Oil and natural gas prices are continuously rising, due to the rapid worldwide increase in their consumption. Coals, covering about 65% of the proven fossil fuel reserves and being widely distributed throughout the world, provide stability in price and availability and will therefore play a major role in the global energy system in the coming decades. Furthermore, given the energy crisis, the development and use of renewable energy sources is one of the key challenges in the shorter and medium term to substitute fossil fuels, to provide commercially attractive options for meeting specific energy service needs, and to mitigate greenhouse gas emissions. Biomass, including all kinds of materials that were directly or indirectly derived not too long ago from contemporary photosynthesis reactions, such as vegetable matter and its derivatives, is a widely dispersed, naturally occurring carbon resource with great energy potential. It is also considered as a CO 2 -neutral energy source. The simple act of burning biomass to obtain heat and often light is one of the oldest biomass conversion processes known to mankind.Thus, the study of coal and biomass combustion for power generation or heating processes is of extreme importance, if we are to conserve our sources of energy, while achieving the required environmental goal efficiently and reliably in a world of increasing population and energy needs. This chapter provides a survey of the technologies that are either available or are being developed to enable all solid fuels to be used cleanly and with greater amenity.

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Alkali influences on sulfur capture for North Dakota lignite combustion

Cited by 20 publications

References 4 publications

Sulfur trioxide formation/emissions in coal‐fired air‐ and oxy‐fuel combustion processes: a review

Sulfur trioxide formation/emissions in coal‐fired air‐ and oxy‐fuel combustion processes: a review

Emission of inorganic PM10 from included mineral matter during the combustion of pulverized coals of various ranks

Overview of Solid Fuels Combustion Technologies

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