Sökning: "thermochemical data"

Visar resultat 1 - 5 av 36 avhandlingar innehållade orden thermochemical data.

1. 1. Black liquor gasification : experimental stability studies of smelt components and refractory lining

   Författare :Mathias Råberg; Dan Boström; Anders Nordin; Honghi Tran; Umeå universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; black liquor gasification; DTA; stability; thermal analysis; thermochemical data; HTM; HT-XRD; metastable; phase diagram; refractory lining; SEM; Chemical energy engineering; Kemisk energiteknik;

   Sammanfattning : Black liquors are presently combusted in recovery boilers where the inorganic cooking chemicals are recovered and the energy in the organic material is converted to steam and electricity. A new technology, developed by Chemrec AB, is black liquor gasification (BLG). LÄS MER

3. 2. Fuel conversion and ash formation interactions : a thermochemical study on lignocellulosic biomass

   Författare :Anna Strandberg; Markus Broström; Rainer Backman; Christoffer Boman; Maria Zevenhoven; Umeå universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Char conversion; pyrolysis; devolatilization; ash transformation; biomass; fuel characterization; fuel composition; ash composition; silicate formation; carbonate formation; thermogravimetric analysis; micro-tomography;

   Sammanfattning : Biomass is considered to be CO2 neutral, and to be able to reduce the dependency on fossil fuels the need for expanded and sustainable biomass feedstock is increasing. Ash-related problems are some of the most important aspects of this increasing use of new biomass assortments in thermal energy conversion systems. LÄS MER

4. 3. System identification of nonlinear thermochemical systems with dynamical instabilities

   Författare :Gunnar Cedersund; Linköpings universitet; []
   Nyckelord :;

   Sammanfattning : Thermochemical systems appear in applications as widespread as in combustion engines, in industrial chemical plants and inside biological cells. Science in all these areas is going towards a more model based thinking, and it is therefore important to develop good methods for system identification, especially fit for these kind of systems. LÄS MER

5. 4. Quantitative laser diagnostics of gas-phase potassium species in biomass combustion and gasification

   Författare :Emil Thorin; Florian Schmidt; Markus Broström; Zhongshan Li; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermochemical conversion; pyrolysis; phosphorus; single pellet; entrained-flow; in situ; spectroscopy; photofragmentation; imaging; numerical modelling; fysik; Physics;

   Sammanfattning : Thermochemical energy conversion processes, such as combustion and gasification, are applied worldwide for generation of electricity, heat and synthesis of chemicals. Today, these processes are mostly run on non-renewable, fossil fuels and constitute a major source of carbon dioxide emissions. LÄS MER

7. 5. Fate of Cu, Cr, As and some other trace elements during combustion of recovered waste fuels

   Författare :Karin Lundholm; Anders Nordin; Britt-Marie Steenari; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; combustion; chemical equilibrium model calculations; trace elements; impregnated wood; waste; thermodynamic data; Cu; Cr; As; Other chemistry; Övrig kemi;

   Sammanfattning : The increased use of biomass and recovered waste fuels in favor of fossil fuels for heat and power production is an important step towards a sustainable future. Combustion of waste fuels also offers several advantages over traditional landfilling, such as substantial volume reduction, detoxification of pathological wastes, and reduction of toxic leaches and greenhouse gas (methane) formation from landfills. LÄS MER