สืบค้นงานวิจัย
The characterization of particulate matter emitted from co- combustion of Thai lignite and agricultural residues
Nattasut Mantananont - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): The characterization of particulate matter emitted from co- combustion of Thai lignite and agricultural residues
ผู้แต่ง / หัวหน้าโครงการ (EN): Nattasut Mantananont
บทคัดย่อ (EN): (is combustion technology. In this study, two sampling methods for PM emissions, from co-combustion of Thai lignite with rice husk and bagasse, at various mixtures of fuel composition and airflow rates, are applied: Total Filtration (TF) for gravimetric analysis and real-time mass-size distribution investigation, using an Electrical Low Pressure Impactor (ELPI). A more detailed characterization of the emitted PM, in terms of morphology and trace elements was conducted, using Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDS). The overall total mass concentrations during mono- and co-firing of coal/rice husk range between 2.32-26.7 mg/m3, when measured by TF method, and 2.1-29 mg/m3 by ELPI method. For mono and co-firing of bagasse/coal, the total mass concentrations of PM comprised between 1.4-12.6 mg/m3 by TF, and 1.5-11.2 mg/m3 by ELPI. Concerning the range of PM emission factors (EFs) during mono and co-firing of coal/rice husks, the measurement based on TF indicates values 1.1-11.6 mg/kgfueh and 0.72-7 .85 mg/k~e), Emission factors, expressed 011 the basis of number of particles released, per kilogram of fuel burned in all experimental runs. are between 4.34*109-1.47*10" particlelkg1ud. For Particle Size Distribution (PSD), obtained results showed that it is bimodal, monomodal and semi-bimodal for mono-combustion of rice husks, bagasse and lignite, respectively. The most dominant size of particles emitted during mono-combustion was identical, and equal to 0.07pm. When co-firing rice husks with coal (at 70% rice husk fraction), it was noticed that a bimodal distribution is obtained, but the most dominant size of particle diameter changed 0.04 !J.m to 0.31 !J.m, suggesting that co-firing may favor thenno-chemical reactions, which would favor the increase of particle size. Based on gravimetric or mass considerations, the prevailing size are the following: 3.07, 5.13, and 8.09 J.tm. The main factor on PM emissions can be documented as follows: The optimum T A for each residue, are 0.003 and 0.005 m3/sec for bagasse and rice husks, respectively. During rice husk combustion, PM emissions may be reduced, by increasing SA:T A. An increase in the burning rate can also reduce PM emissions. Real-time measurement data indicate that PM emissions relied very much on burning rates and temperatures, which led to the fonnation of nucleus-sized particles (PMoo1), along with coagulated particles (PM0.01-1). Regarding the particulate morphology and its associated trace elements, the results indicated particle shapes, derived from mono and co-firing of coal/rice husks were mainly of two structures: spherical and irregular (rod, flake-like, fireball). The major elements found in submicron-sized particles are silicon, aluminum and iron. In contrast, calcium is found mainly in fine to coarse particle (PM 1 -10).
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): http://dcms.thailis.or.th/dcms/dccheck.php?Int_code=54&RecId=12243&obj_id=35315
เผยแพร่โดย (EN): มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี
คำสำคัญ (EN): Particulate matter
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี
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Nattasut Mantananont. "The characterization of particulate matter emitted from co- combustion of Thai lignite and agricultural residues". ไม่ระบุหน่วยงาน. ม.ป.ป.

Nattasut Mantananont. "The characterization of particulate matter emitted from co- combustion of Thai lignite and agricultural residues". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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The characterization of particulate matter emitted from co- combustion of Thai lignite and agricultural residues
Nattasut Mantananont
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี
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