Cofiring multiple opportunity fuels with coal at Bailly Generating Station

Hus, Patricia J; Tillman, David A.

doi:10.1016/s0961-9534(00)00050-7

Cited by 40 publications

(14 citation statements)

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“…Biomass can be directly fired in dedicated boilers. In recent years, there has been considerable emphasis on co-firing waste fuels with coal in pulverized coal (PC) and cyclone boilers owned and operated by electricity generating utilities (Gold and Tillman, 1996;Hein and Bemtgen, 1998;Hughes and Tillman, 1998;Ekmann et al, 1998;Hus and Tillman, 2000;Battista et al, 2000;Demirbaş, 2000a). …”

Section: Introductionmentioning

confidence: 99%

Biomass Co-Firing for Coal-Fired Boilers

Demırbas¹

2003

Energy Exploration & Exploitation

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In this study ground biomass and pulverized coal were used for co-firing test.The tests of co-firing of coal and biomass were carried out in a bench-scale bubbling fluidized bed combustor. Biomass is an attractive and sustainable renewable fuel to supplement coal combustion in utility boilers. Coal co-firing was successful with up to a 20% biomass mix boilers. Coal and biomass fuels are quite different in composition. Ash composition for the biomass is fundamentally different from ash composition for the coal. Chlorine in the biomass may affect operation by corrosion. Ash deposits reduce heat transfer and may also result in severe corrosion at high temperatures. Biomass and coal blend combustion is a promising combustion technology; however, significant development work is required before large-scale implementation can be realized. Issues related to successful implementation of coal biomass blend combustion are identified. Co-firing of coal and biomass is an effective method of control NO x . Formation of NO x decreases with the increase of biomass fraction. INTRODUCTIONBiomass co-firing in large industrial and utility coal-fired boilers is a practical approach for increasing renewable energy given the wide availability, existing capital investment, and established performance of coal-fired boilers for providing efficient, low cost power (Hughes, 2000). Biomass can be directly fired in dedicated boilers. In recent years, there has been considerable emphasis on co-firing waste fuels with coal in pulverized coal (PC) and cyclone boilers owned and operated by electricity generating utilities (Gold and Tillman, 1996;Hein and Bemtgen, 1998; Hughes and Tillman, 1998;Ekmann et al., 1998;Hus and Tillman, 2000;Battista et al., 2000;Demirbaş, 2000a).Biomass energy is renewable and sustainable, when the resource is managed so that as much or more biomass is grown each year as is used as a source of fuel or feedstock. Biomass is the organic material of living organisms, mostly plant life and the products of plant life. As a source of energy it is stored solar energy. Table 1 shows world final energy consumption in 1995. Biomass energy (firewood, agricultural residues, animal wastes, charcoal and other derived fuels) currently represents approximately 14% of world final energy consumption, a higher share than that of coal (12%) and comparable to those of gas (15%) and electricity (14%) ( Table 1).

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Section: Introductionmentioning

confidence: 99%

Biomass Co-Firing for Coal-Fired Boilers

Demırbas¹

2003

Energy Exploration & Exploitation

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“…The Bailly Generating Station triburn program resulted from this assessment, as described by , Tillman and Hus (2000), and Hus and Tillman (2000).…”

Section: The Bailly Generating Station Triburn Test Programmentioning

confidence: 99%

Epri-Usdoe Cooperative Agreement: Cofiring Biomass With Coal

Tillman¹

2001

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“…Different biomass materials including wood waste, agricultural residue, residues left after biomass processing, and municipal solid wastes have been tested for co-combustion with coal in small scale facilities as well as in bigger demonstration plants [4][5][6][7][8][9][10][11][12][13][14]. Co-combustion of biomass with coal resulted in lower NO x , SO x , and CO 2 emissions due to lower percentages of nitrogen in some biomass materials, lower sulfur content in the biomass when compared with coal, and carbon neutrality of the biomass.…”

Section: Introductionmentioning

confidence: 99%

“…Co-combustion of biomass with coal resulted in lower NO x , SO x , and CO 2 emissions due to lower percentages of nitrogen in some biomass materials, lower sulfur content in the biomass when compared with coal, and carbon neutrality of the biomass. Synergistic NO x reduction has been reported upon combustion of biomass with coal [4,10,15,16]. The amount of biomass which can be co-fired with coal is limited due to the poor grindability of biomass [17].…”

Section: Introductionmentioning

confidence: 99%

Co-firing carbon dioxide-torrefied woody biomass with coal on emission characteristics

Thanapal

Annamalai

Ansley³

et al. 2015

Biomass Conv. Bioref.

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Torrefaction is a pre-treatment technique that involves the partial pyrolysis (200-300°C) of biomass in an inert environment to improve its fuel properties. Effect of co-firing CO 2 -torrefied mesquite and juniper (10 % on mass basis) with coal in a 30-kWt downfired burner was studied considering the grindability potential of CO 2 -torrefied biomass (60 % higher grindability than N 2 -torrefied biomass). It was observed that co-firing 10 % by mass of raw mesquite with coal reduced the NO x emission from 420 to 280 ppm (33 % reduction) for an equivalence ratio (ER) of 0.9. However, co-firing TB with coal reduced the NO x emission by 10 % when compared to base case NO x emission from combustion of pure powder river basin coal (PRB) coal. Carbon monoxide percentage in the flue gas increased when biomass was co-fired with coal. An inverse relation was observed between CO and NO x emissions due to NO x reducing potential of CO in the presence of fixed carbon. Combining the advantages of using a greenhouse gas CO 2 for pretreatment and potential of CO 2 -torrefied biomass in reducing emissions with improved grindability, proves co-firing torrefied biomass with coal is an efficient technique.

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Cofiring multiple opportunity fuels with coal at Bailly Generating Station

Cited by 40 publications

References 0 publications

Biomass Co-Firing for Coal-Fired Boilers

Biomass Co-Firing for Coal-Fired Boilers

Epri-Usdoe Cooperative Agreement: Cofiring Biomass With Coal

Co-firing carbon dioxide-torrefied woody biomass with coal on emission characteristics

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