NO formation during co-combustion of coal with two thermally treated biomasses

Article Engineering, Chemical

Effect of biomass co-firing position on combustion and NOX emission in a 300-MWe coal-fired tangential boiler

Yaojie Tu et al.

Summary: The study shows that the location of biomass injection affects combustion and NOX formation characteristics, with the lowest NO emission observed when biomass is injected into the highest layer.

ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING (2022)

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Review Energy & Fuels

A comprehensive review on efficient utilization methods of High-alkali coals combustion in boilers

Congwei Tang et al.

Summary: This paper clarifies the problems and difficulties faced by the combustion of high-alkali coals in boilers, and summarizes the current efficient utilization methods and solutions. Further research directions and key points are proposed.

FUEL (2022)

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Article Thermodynamics

Comprehensive study of the effect of a developed co-firing burner and its front-wall, opposed-wall, and tangential firing arrangements on the performance improvement and emissions reduction of coal-natural gas combustion in a boiler

Iman Rahimipetroudi et al.

Summary: This study discusses the efficiency of a coal-natural gas co-firing burner and its impact on combustion efficiency in boilers. Comparisons between front-wall, opposite-wall, and tangential firing configurations emphasize the advantage of using natural gas in the main burner to reduce NOx emissions.

INTERNATIONAL JOURNAL OF THERMAL SCIENCES (2022)

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Article Thermodynamics

Alkali sulfation during combustion of coal in a pilot scale facility using additives to alter the global sulfur to potassium and chlorine to potassium ratios

Thomas Allguren et al.

Summary: This study focused on the sulfation and chlorination of alkali metals in coal-fired flames, finding that the sulfation kinetics are fast and dominated by SO2. The availability of oxygen, carbon monoxide, and hydrocarbons is critical for sustaining the sulfation reaction cycle.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2021)

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Article Thermodynamics

The roles of added chlorine and sulfur on ash deposition mechanisms during solid fuel combustion

Xiaolong Li et al.

Summary: This paper focuses on the effects of chlorine and sulfur on coal ash deposition rates, showing that chlorine has a significant impact on the deposition rates of inside deposits while sulfur, added together with chlorine, does not affect deposition rates much.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2021)

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Article Energy & Fuels

NO formation characteristics and fuel-nitrogen transformation mechanism during co-firing of low-volatile carbon-based solid fuels with bituminous coal

Chang 'an Wang et al.

Summary: The co-firing of bituminous coal with semi-cokes is a promising approach for clean utilization, but the fuel-nitrogen migration mechanisms are not fully understood. Experimental results show that bituminous coal can enhance the combustion of semi-cokes, with staged feeding significantly inhibiting the conversion of fuel-nitrogen to NO.

FUEL (2021)

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Article Agricultural Engineering

Evaluation on nitrogen conversion during biomass torrefaction and its blend co-combustion with coal

Xudong Yang et al.

Summary: This study investigated the migration and transformation of nitrogen during biomass torrefaction combined with coal co-combustion. The XPS analysis showed that torrefaction in CO2 suppressed the conversion of nitrogen components. Additionally, torrefaction in a N2/O2 atmosphere at a lower temperature improved biomass properties and reduced NO emissions during co-combustion.

BIORESOURCE TECHNOLOGY (2021)

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Article Thermodynamics

Development of environment-friendly dual fuel pulverized coalnatural gas combustion technology for the co-firing power plant boiler: Experimental and numerical analysis

Iman Rahimipetroudi et al.

Summary: This study aimed to develop an effective dual-fuel burner with advanced technologies to improve performance and reduce emissions. Through experiments and modeling, optimal operating conditions were identified to minimize NOx emissions and enhance combustion efficiency. Co-firing natural gas proved to be a beneficial approach for reducing NOx emissions and improving combustion characteristics.

ENERGY (2021)

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Article Energy & Fuels