Aerosol formation in real scale pulverized coal combustion

Joutsensaari, Jorma; Kauppinen, Esko I.; Ahonen, Petri; Lind, Terttaliisa; Ylätalo, S; Jokiniemi, Jorma; Hautanen, Jukka; Kilpeläinen, Markku

doi:10.1016/0021-8502(92)90394-b

Cited by 12 publications

(6 citation statements)

References 4 publications

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“…All three PSDs show a trimodal distribution, namely, submicron, fine fragment, and bulk modes. This trimodal distribution is consistent with observations made by other researchers. ,,− The submicron regime peaks around 0.22 μm (mean diameter of DLPI stage 4) for all three tests. The peak for the fine fragment mode was also similar for all three test conditions and occurred within the range of 1.3–2.1 μm (stage 8 or 9).…”

Section: Resultssupporting

confidence: 92%

Mobility of Semi-volatile Trace Elements from the Fly Ash Generated by the Combustion of a Sub-bituminous Coal—The Effects of the Combustion Temperature

et al. 2020

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The effect of the combustion temperature on the mobility of three semi-volatile trace elements (TEs), arsenic, selenium, and antimony, from the fly ash generated from the combustion of a pulverized sub-bituminous coal was assessed using a modified toxicity characteristic leaching procedure protocol. Multiple sets of size-segregated fly ash samples were collected from the combustion of a Powder River Basin sub-bituminous coal in a laboratory-scale self-sustaining combustor at peak combustion temperatures of 1623, 1673, and 1723 K. TEs were extracted from representative ash samples from each particle size mode (submicron, fine fragment, and bulk) in acidic (pH 2.88), neutral (pH 7), and basic (pH 11) solvents. TE concentrations in each solvent were compared to the concentrations from complete digestion to determine fly ash TE mobility under various conditions. It was observed that an increase in the peak combustion temperature increased the distribution of minor elements and TEs in the smaller size modes but had no significant effect on TE mobility for a given size mode under a particular leaching fluid. For all three TEs, solubility decreased with increasing pH for most size modes. In a majority of cases, the fraction present in the smaller sized submicron and fine fragment particles was found to be more leachable compared to the larger bulk particles.

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Section: Resultssupporting

confidence: 92%

Mobility of Semi-volatile Trace Elements from the Fly Ash Generated by the Combustion of a Sub-bituminous Coal—The Effects of the Combustion Temperature

et al. 2020

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“…Some studies [8][9][10][11]30,31] on the three particle modes are compared with the present work in Table 2. A few important conclusions can be obtained.…”

Section: Formation Mechanisms Of the Identified Three Particle Modesmentioning

confidence: 96%

Effective identification of the three particle modes generated during pulverized coal combustion

Yao

et al. 2008

Sci. Bull.

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“…Information on morphology and size distribution can be obtained by image analysis and the elemental composition of particles can be determined by electron probe X-ray microanalysis (EPXMA). Aerodynamic size distribution is determined using an eight stage cascade impactor (16) arranged with glass fiber paper substrates and backup filter. Additionally, 47 mm glass fiber paper filters are used to measure total mass concentration of the aerosol.…”

Section: Sampling Stationmentioning

confidence: 99%

Application of Acoustic Agglomeration to Reduce Fine Particle Emissions from Coal Combustion Plants

Gallego-Juárez¹,

Riera²,

Rodriguez-Corral³

et al. 1999

Environ. Sci. Technol.

136

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Removal of fine particles (smaller than 2.5 microns) from industrial flue gases is, at present, one of the most important problems in air pollution abatement. These particles, which are the most dangerous because of their ability to penetrate in lung tissue, are difficult to remove by conventional separation technology.Sonic energy offers a means to solve the problem. The application of a high intensity acoustic field to an aerosol induces an agglomeration process which changes the size distribution in favor of larger particles, which are then more easily precipitated by a conventional separator. In this work, we present a semi-industrial pilot plant in which this process is applied for reduction of particle emissions in coal combustion fumes. This installation basically consists of a rectangular-section acoustic agglomeration chamber driven by four high power and high directional acoustic

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Aerosol formation in real scale pulverized coal combustion

Cited by 12 publications

References 4 publications

Mobility of Semi-volatile Trace Elements from the Fly Ash Generated by the Combustion of a Sub-bituminous Coal—The Effects of the Combustion Temperature

Mobility of Semi-volatile Trace Elements from the Fly Ash Generated by the Combustion of a Sub-bituminous Coal—The Effects of the Combustion Temperature

Effective identification of the three particle modes generated during pulverized coal combustion

Application of Acoustic Agglomeration to Reduce Fine Particle Emissions from Coal Combustion Plants

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