Ignition of Coal Particles at High Pressure in a Thermogravimetric Analyzer

Sun, Chengyu; Zhang, Ming Y.

doi:10.1016/s0010-2180(97)00350-7

Cited by 32 publications

(29 citation statements)

References 23 publications

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“…With the exception the work by Meserole et al (15) , all published models assume a monodisperse size distributions. However, the sorbents used in full-scale settings have polydisperse size distributions.…”

Section: Effect Of Individual Sorbent Propertiesmentioning

confidence: 99%

“…Over the last decade, there have been numerous studies of coal particle ignition mechanisms [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Essenhigh et al [8] completed a classical review on coal particle ignition mechanisms in 1980.…”

Section: Single Coal Particle Ignition Mechanismmentioning

confidence: 99%

“…Essenhigh et al [8] completed a classical review on coal particle ignition mechanisms in 1980. Both homogenous, gas phase ignition(GI), and heterogeneous (HI) mechanisms have been proposed to describe the ignition process [8][9][10][11][12][13][14][15]. The greatest controversy lies on which mechanism is controlling: devolatilization followed by gas phase ignition (first proposed by Faraday) or gas/solid reaction (whole coal ignition).…”

Section: Single Coal Particle Ignition Mechanismmentioning

confidence: 99%

“…Sun [15] suggested that when weight loss occurs before ignition, it can be assumed that pyrolysis occurs first, so that ignition is homogeneous. On the other hand, when ignition occurs before or at almost same time as weight loss, ignition can be assumed to be heterogeneous.…”

Section: Single Coal Particle Ignition Mechanismmentioning

confidence: 99%

“…Many criteria, such as temperature, pyrolysis rate, local gas phase combustible concentration, local gas phase reaction rate, local gas phase heat release rate, local gas phase heating rate [10,11,15], and spatial concentration distribution of combustibles, have been developed to define the ignition of coal particles.…”

Section: Single Coal Particle Ignition Mechanismmentioning

confidence: 99%

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Clean Coal Program Research Activities

Baxter¹,

Eddings²,

Fletcher³

et al. 2009

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Although remarkable progress has been made in developing technologies for the clean and efficient utilization of coal, the biggest challenge in the utilization of coal is still the protection of the environment. Specifically, electric utilities face increasingly stringent restriction on the emissions of NO x and SO x , new mercury emission standards, and mounting pressure for the mitigation of CO 2 emissions, an environmental challenge that is greater than any they have previously faced. The Utah Clean Coal Program addressed issues related to innovations for existing power plants including retrofit technologies for carbon capture and sequestration (CCS) or green field plants with CCS.The Program focused on the following areas: simulation, mercury control, oxycoal combustion, gasification, sequestration, chemical looping combustion, materials investigations and student research experiences. The goal of this program was to begin to integrate the experimental and simulation activities and to partner with NETL researchers to integrate the Program's results with those at NETL, using simulation as the vehicle for integration and innovation. The investigators also committed to training students in coal utilization technology tuned to the environmental constraints that we face in the future; to this end the Program supported approximately 12 graduate students toward the completion of their graduate degree in addition to numerous undergraduate students. With the increased importance of coal for energy independence, training of graduate and undergraduate students in the development of new technologies is critical.ii

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Section: Effect Of Individual Sorbent Propertiesmentioning

confidence: 99%