مورد إلكتروني
Co-firing complex biomass in a CFB boiler : ash transformation, corrosion control and materials selection
| العنوان: | Co-firing complex biomass in a CFB boiler : ash transformation, corrosion control and materials selection |
|---|---|
| عناروين إضافية: | Samförbränning av komplex biomassa i en CFB-panna : askomvandling, korrosion och materialval |
| بيانات النشر: | Umeå universitet, Institutionen för tillämpad fysik och elektronik Umeå : Umeå University 2018 |
| تفاصيل مُضافة: | Hagman, Henrik |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | The effects of greenhouse gas net emissions on global warming, stricter legislation on waste handling, and the pursuit of ever cheaper heat- and power production are all important factors driving the introduction of complex fuels in incineration plants. However - without fundamental knowledge regarding ash transformation, corrosion control, and materials selection – this introduction of potentially economically and environmentally beneficial fuels, might instead cause economic loss and environmentally adverse effects. The present work is a contribution to the transition from today's CO2 net generating energy conversion system, to a more environmentally friendly and cost-efficient one. This is done using scientific methods to generate knowledge concerning mechanisms of ash transformation, corrosion control, and materials selection, in a co-fired industrial scale circulating fluidized bed (CFB) boiler, using a novel and biomass-based fuel mix, rich in Na, K, Cl, N, S, P, Ca and Si. Fuel fractions, ashes, flue gas, deposits, and construction material samples have been collected and analyzed using various techniques, including scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), and X-ray Diffraction (XRD). The experimental results have been evaluated and interpreted using chemical equilibrium calculations. The results of this work include: 1) An analysis of; the failure and preventive maintenance statistics of the industrial scale CFB boiler at hand; the elemental composition of boiler ashes and deposits, the flue gas composition and elemental composition of a multitude of fuel fractions; correlations between boiler design, operational parameters, elemental composition of deposits and boiler availability; a boiler elemental mass balance revealing details regarding deposit buildup mechanisms; properties of the fly ash relevant to flue gas filter design; and findings regarding the nitrogen chemistry of the novel and nitrogen-rich fuel mix. 2) Speciat |
| مصطلحات الفهرس: | ash transformation, process control, equilibrium calculations, boiler availability, failures, alloy selection, alloy degradation, vortex finder (VF), service life estimation, sulfation, chloridation, high temperature corrosion, biomass, waste derived fuels, forest residues, RDF, Biomal, slaughterhouse waste, peat, waste wood, industrial waste water treatment sludge, HAD, RSMT, Alloy 253MA, Alloy 310S, Alloy 800H/HT, Alloy DS, Alloy 600, Corrosion Engineering, Korrosionsteknik, Chemical Process Engineering, Kemiska processer, Reliability and Maintenance, Tillförlitlighets- och kvalitetsteknik, Energy Engineering, Energiteknik, Doctoral thesis, comprehensive summary, info:eu-repo/semantics/doctoralThesis, text |
| URL: | |
| الإتاحة: | Open access content. Open access content info:eu-repo/semantics/openAccess |
| ملاحظة: | application/pdf English |
| أرقام أخرى: | UPE oai:DiVA.org:umu-145106 urn:isbn:978-91-7601-855-2 1234346567 |
| المصدر المساهم: | UPPSALA UNIV LIBR From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1234346567 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |