Biomass cofiring: status and prospects 1996

Hughes, E.E.; Tillman, David A.

doi:10.1016/s0378-3820(97)00064-7

Cited by 106 publications

(50 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This could have implications at the operational scale: the blending of higher-rank (bituminous) coals with sawdust could translate into greater unburnt coal in the ashes because coal requires more combustion time to burn completely. This result agrees with that expressed some years ago by other authors, who recommended not using coal-biomass blends with over 20% biomass (Hughes and Tillman, 1998;Spliethoff and Hein, 1998) because of this operational consequence.…”

Section: Thermogravimetric Assayssupporting

confidence: 83%

Burnout synergic or inhibiting effects in combustion of coal-sawdust blends

Ulloa

Garcı́a

2014

ing.inv.

View full text Add to dashboard Cite

The co-firing of coal and biomass was studied using DTG assays. Blends of coal of different ranks and pine charcoal (obtained through pyrolysis of biomass at 1000°C) were prepared. Combustion profiles and characteristic temperatures (IT, PT and BT) were obtained and compared. To detect deviations, the experimental burnout curves for each blend were compared with weighted averages calculated from the conversion profiles obtained for the individual fuel samples and the blend composition. Positive and negative deviations were obtained which can be predicted from the differences in the reactivity of the blend components and their relative proportions. Keywords:Coal-biomass co-firing, Biomass, Coal, DTG. RESUMENSe estudia la combustión de mezclas de carbones de diferente rango con carbonizados de pino (pirolizados a 1000ºC) mediante ensayos DTG. Se registraron perfiles de combustión y temperaturas características (IT, PT y BT). Para detector desviaciones en el quemado de las mezclas, se compararon las curvas experimentales de conversión con aquellas obtenidas a partir del promedio ponderado calculado a partir de la conversión de los combustibles individuales y la composición de la mezcla. Estos ensayos revelaron que existen tanto desviaciones positivas como negativas en la conversión. Los factores clave en la predicción de estas desviaciones corresponden a las diferencias de reactividad entre los componentes de la mezcla y su proporción relativa.

show abstract

Section: Thermogravimetric Assayssupporting

confidence: 83%

Burnout synergic or inhibiting effects in combustion of coal-sawdust blends

Ulloa

Garcı́a

2014

ing.inv.

View full text Add to dashboard Cite

show abstract

“…A number of efforts have been made to address the associated problems, for example: mixing the coal with co-fuel such as biomass [3][4][5][6][7][8][9][10][11][12][13][14][15][16], refuse-derived fuel [5,6], tire-derived fuel [5,6] and plastics [6]. These efforts involved both pulverized and briquetted coals.…”

Section: Introductionmentioning

confidence: 99%

Sulfur Removal in Bio-Briquette Combustion Using Seashell Waste Adsorbent at Low Temperature

Mahidin

Gani

Muslim

et al. 2016

J. Eng. Technol. Sci.

View full text Add to dashboard Cite

Abstract. Presently, biomass is mostly utilized as co-fuel in coal combustion in view of energy diversification and emission reduction. However, since the coal content of bio-briquettes is high (up to 80% in this study), gas emissions such as those of SO x still occur. Therefore, the introduction of SO 2 adsorbent is common in coal briquette or bio-briquette combustion. A calcium-based material is usually used for this goal. The aim of this study was to observe the effects of desulfurization temperature and Ca/S ratio (Ca = calcium content in adsorbent; S = sulfur content in coal and biomass) on desulfurization efficiency and kinetics. The ratio of coal to biomass (palm kernel shell/PKS) was fixed at 90:10 (wt/wt) and the ratios of Ca to S were varied at 1:1, 1.25:1, 1.5:1, 1.75:1 and 2:1. The mixtures of coal, PKS and adsorbent were briquetted at a molding pressure of 6 ton/cm 2 with Jatropha curcas seeds and starch mixture as binding agents. Desulfurization was performed within a temperature range of 300 to 500°C for 720 seconds at an airflow rate of 1.2 L/min. The results showed that the highest desulfurization efficiency (90.6%) was associated with the Ca/S ratio of 2:1 and temperature of 400°C. Moreover, the highest reaction rate constant of desulfurization was 0.280 min -1 .

show abstract

“…European research into direct firing and cofiring biomass with coal for power generation has been fairly extensive with various agricultural biomass fuels such as wheat straw and wood waste product fuels (8)(9)(10)(11)(12)(13). In the United States, research has focused primarily on cofiring arrangements for wood (14)(15)(16)(17)(18)(19)(20)(21), and more localized agricultural waste biomass fuels have been studied less intensely (22)(23)(24)(25)(26). Figure 1 shows the types of biomass that could be expected to be available for power production in various regions of the United States.…”

Section: Introductionmentioning

confidence: 99%